./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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 0cfed53fd6b4f79a916e28ee79b804b829089e910b2920e7660f6197a58c3e45 --- 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 03:59:37,373 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 03:59:37,375 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 03:59:37,424 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 03:59:37,425 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 03:59:37,429 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 03:59:37,432 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 03:59:37,439 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 03:59:37,445 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 03:59:37,449 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 03:59:37,451 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 03:59:37,454 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 03:59:37,455 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 03:59:37,459 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 03:59:37,467 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 03:59:37,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 03:59:37,470 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 03:59:37,471 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 03:59:37,472 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 03:59:37,474 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 03:59:37,476 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 03:59:37,481 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 03:59:37,483 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 03:59:37,484 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 03:59:37,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 03:59:37,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 03:59:37,489 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 03:59:37,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 03:59:37,491 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 03:59:37,492 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 03:59:37,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 03:59:37,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 03:59:37,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 03:59:37,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 03:59:37,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 03:59:37,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 03:59:37,498 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 03:59:37,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 03:59:37,499 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 03:59:37,500 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 03:59:37,501 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 03:59:37,502 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Default.epf [2022-11-03 03:59:37,531 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 03:59:37,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 03:59:37,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 03:59:37,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 03:59:37,533 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 03:59:37,534 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 03:59:37,534 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 03:59:37,534 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 03:59:37,535 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 03:59:37,535 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 03:59:37,535 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 03:59:37,536 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 03:59:37,536 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 03:59:37,537 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 03:59:37,537 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 03:59:37,537 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 03:59:37,538 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 03:59:37,538 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 03:59:37,539 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 03:59:37,539 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 03:59:37,540 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 03:59:37,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 03:59:37,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 03:59:37,541 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 03:59:37,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 03:59:37,541 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 03:59:37,542 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 03:59:37,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 03:59:37,543 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 03:59:37,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:37,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 03:59:37,543 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 03:59:37,544 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 03:59:37,544 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 03:59:37,544 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 03:59:37,545 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 03:59:37,545 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 03:59:37,545 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 03:59:37,546 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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cfed53fd6b4f79a916e28ee79b804b829089e910b2920e7660f6197a58c3e45 [2022-11-03 03:59:37,862 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 03:59:37,898 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 03:59:37,901 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 03:59:37,903 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 03:59:37,904 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 03:59:37,906 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2022-11-03 03:59:38,028 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/91bd6b835/144244a4ddbe47e2a6374d39a578e8d9/FLAG38655edce [2022-11-03 03:59:38,621 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 03:59:38,621 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2022-11-03 03:59:38,634 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/91bd6b835/144244a4ddbe47e2a6374d39a578e8d9/FLAG38655edce [2022-11-03 03:59:38,895 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/91bd6b835/144244a4ddbe47e2a6374d39a578e8d9 [2022-11-03 03:59:38,898 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 03:59:38,899 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 03:59:38,901 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:38,902 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 03:59:38,907 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 03:59:38,908 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:38" (1/1) ... [2022-11-03 03:59:38,909 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72f1929d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:38, skipping insertion in model container [2022-11-03 03:59:38,910 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:59:38" (1/1) ... [2022-11-03 03:59:38,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 03:59:38,967 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 03:59:39,190 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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1116,1129] [2022-11-03 03:59:39,428 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:39,432 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 03:59:39,445 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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1116,1129] [2022-11-03 03:59:39,529 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 03:59:39,544 INFO L208 MainTranslator]: Completed translation [2022-11-03 03:59:39,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39 WrapperNode [2022-11-03 03:59:39,545 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 03:59:39,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:39,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 03:59:39,547 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 03:59:39,556 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,579 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,713 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 780 [2022-11-03 03:59:39,713 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 03:59:39,714 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 03:59:39,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 03:59:39,715 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 03:59:39,727 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,740 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,775 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,790 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,796 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 03:59:39,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 03:59:39,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 03:59:39,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 03:59:39,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (1/1) ... [2022-11-03 03:59:39,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 03:59:39,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 03:59:39,915 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 03:59:39,926 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 03:59:39,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 03:59:39,982 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 03:59:39,982 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 03:59:39,983 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 03:59:40,217 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 03:59:40,220 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 03:59:41,618 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 03:59:43,087 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 03:59:43,087 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 03:59:43,092 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:43 BoogieIcfgContainer [2022-11-03 03:59:43,093 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 03:59:43,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 03:59:43,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 03:59:43,103 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 03:59:43,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:59:38" (1/3) ... [2022-11-03 03:59:43,106 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686d66ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:43, skipping insertion in model container [2022-11-03 03:59:43,106 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:59:39" (2/3) ... [2022-11-03 03:59:43,107 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@686d66ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:59:43, skipping insertion in model container [2022-11-03 03:59:43,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:43" (3/3) ... [2022-11-03 03:59:43,109 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2022-11-03 03:59:43,136 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 03:59:43,136 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 03:59:43,219 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 03:59:43,239 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;@65a45472, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 03:59:43,239 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 03:59:43,253 INFO L276 IsEmpty]: Start isEmpty. Operand has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 03:59:43,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-11-03 03:59:43,266 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:43,267 INFO L195 NwaCegarLoop]: trace histogram [3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 03:59:43,268 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:43,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:43,281 INFO L85 PathProgramCache]: Analyzing trace with hash -1445781829, now seen corresponding path program 1 times [2022-11-03 03:59:43,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:43,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412507180] [2022-11-03 03:59:43,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:43,294 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 03:59:44,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 03:59:48,556 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 03:59:48,557 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 03:59:48,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412507180] [2022-11-03 03:59:48,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412507180] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 03:59:48,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 03:59:48,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 03:59:48,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256164008] [2022-11-03 03:59:48,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 03:59:48,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 03:59:48,569 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 03:59:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 03:59:48,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 03:59:48,618 INFO L87 Difference]: Start difference. First operand has 15 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:59:49,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 03:59:49,843 INFO L93 Difference]: Finished difference Result 37 states and 49 transitions. [2022-11-03 03:59:49,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 03:59:49,847 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 16 [2022-11-03 03:59:49,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 03:59:49,862 INFO L225 Difference]: With dead ends: 37 [2022-11-03 03:59:49,862 INFO L226 Difference]: Without dead ends: 23 [2022-11-03 03:59:49,866 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-03 03:59:49,872 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 7 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 39 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 03:59:49,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 39 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-03 03:59:49,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-11-03 03:59:49,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 22. [2022-11-03 03:59:49,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 14 states have (on average 1.0714285714285714) internal successors, (15), 14 states have internal predecessors, (15), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 03:59:49,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 27 transitions. [2022-11-03 03:59:49,919 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 27 transitions. Word has length 16 [2022-11-03 03:59:49,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 03:59:49,921 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 27 transitions. [2022-11-03 03:59:49,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 03:59:49,921 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 27 transitions. [2022-11-03 03:59:49,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2022-11-03 03:59:49,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 03:59:49,924 INFO L195 NwaCegarLoop]: trace histogram [6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1] [2022-11-03 03:59:49,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 03:59:49,924 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 03:59:49,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 03:59:49,925 INFO L85 PathProgramCache]: Analyzing trace with hash 1324141254, now seen corresponding path program 1 times [2022-11-03 03:59:49,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 03:59:49,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042344183] [2022-11-03 03:59:49,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 03:59:49,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 04:00:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:03,290 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-03 04:00:13,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-03 04:00:13,264 INFO L130 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2022-11-03 04:00:13,265 INFO L359 BasicCegarLoop]: Counterexample is feasible [2022-11-03 04:00:13,267 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-11-03 04:00:13,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 04:00:13,275 INFO L444 BasicCegarLoop]: Path program histogram: [1, 1] [2022-11-03 04:00:13,279 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-03 04:00:13,459 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 04:00:13,464 WARN L320 BoogieBacktranslator]: Removing null node from list of ATEs: ATE program state null [2022-11-03 04:00:13,529 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.11 04:00:13 BoogieIcfgContainer [2022-11-03 04:00:13,529 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-03 04:00:13,530 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-03 04:00:13,531 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-03 04:00:13,531 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-03 04:00:13,532 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:59:43" (3/4) ... [2022-11-03 04:00:13,535 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-11-03 04:00:13,536 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-03 04:00:13,538 INFO L158 Benchmark]: Toolchain (without parser) took 34637.26ms. Allocated memory was 104.9MB in the beginning and 826.3MB in the end (delta: 721.4MB). Free memory was 70.8MB in the beginning and 309.1MB in the end (delta: -238.2MB). Peak memory consumption was 481.5MB. Max. memory is 16.1GB. [2022-11-03 04:00:13,538 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:00:13,543 INFO L158 Benchmark]: CACSL2BoogieTranslator took 644.08ms. Allocated memory is still 104.9MB. Free memory was 70.6MB in the beginning and 65.4MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-03 04:00:13,544 INFO L158 Benchmark]: Boogie Procedure Inliner took 167.61ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 54.6MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-03 04:00:13,548 INFO L158 Benchmark]: Boogie Preprocessor took 96.43ms. Allocated memory is still 104.9MB. Free memory was 54.6MB in the beginning and 48.9MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-03 04:00:13,549 INFO L158 Benchmark]: RCFGBuilder took 3281.35ms. Allocated memory was 104.9MB in the beginning and 228.6MB in the end (delta: 123.7MB). Free memory was 48.7MB in the beginning and 168.2MB in the end (delta: -119.5MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. [2022-11-03 04:00:13,551 INFO L158 Benchmark]: TraceAbstraction took 30431.05ms. Allocated memory was 228.6MB in the beginning and 826.3MB in the end (delta: 597.7MB). Free memory was 167.1MB in the beginning and 310.1MB in the end (delta: -143.0MB). Peak memory consumption was 455.0MB. Max. memory is 16.1GB. [2022-11-03 04:00:13,551 INFO L158 Benchmark]: Witness Printer took 5.52ms. Allocated memory is still 826.3MB. Free memory was 310.1MB in the beginning and 309.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-03 04:00:13,558 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 104.9MB. Free memory was 55.2MB in the beginning and 55.1MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 644.08ms. Allocated memory is still 104.9MB. Free memory was 70.6MB in the beginning and 65.4MB in the end (delta: 5.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 167.61ms. Allocated memory is still 104.9MB. Free memory was 65.4MB in the beginning and 54.6MB in the end (delta: 10.9MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Preprocessor took 96.43ms. Allocated memory is still 104.9MB. Free memory was 54.6MB in the beginning and 48.9MB in the end (delta: 5.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 3281.35ms. Allocated memory was 104.9MB in the beginning and 228.6MB in the end (delta: 123.7MB). Free memory was 48.7MB in the beginning and 168.2MB in the end (delta: -119.5MB). Peak memory consumption was 65.1MB. Max. memory is 16.1GB. * TraceAbstraction took 30431.05ms. Allocated memory was 228.6MB in the beginning and 826.3MB in the end (delta: 597.7MB). Free memory was 167.1MB in the beginning and 310.1MB in the end (delta: -143.0MB). Peak memory consumption was 455.0MB. Max. memory is 16.1GB. * Witness Printer took 5.52ms. Allocated memory is still 826.3MB. Free memory was 310.1MB in the beginning and 309.1MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 20]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: overapproximation of bitwiseOr at line 289, overapproximation of bitwiseComplement at line 154, overapproximation of bitwiseAnd at line 157. Possible FailurePath: [L25] const SORT_1 mask_SORT_1 = (SORT_1)-1 >> (sizeof(SORT_1) * 8 - 1); [L26] const SORT_1 msb_SORT_1 = (SORT_1)1 << (1 - 1); [L28] const SORT_3 mask_SORT_3 = (SORT_3)-1 >> (sizeof(SORT_3) * 8 - 32); [L29] const SORT_3 msb_SORT_3 = (SORT_3)1 << (32 - 1); [L31] const SORT_11 mask_SORT_11 = (SORT_11)-1 >> (sizeof(SORT_11) * 8 - 5); [L32] const SORT_11 msb_SORT_11 = (SORT_11)1 << (5 - 1); [L34] const SORT_13 mask_SORT_13 = (SORT_13)-1 >> (sizeof(SORT_13) * 8 - 4); [L35] const SORT_13 msb_SORT_13 = (SORT_13)1 << (4 - 1); [L37] const SORT_19 mask_SORT_19 = (SORT_19)-1 >> (sizeof(SORT_19) * 8 - 3); [L38] const SORT_19 msb_SORT_19 = (SORT_19)1 << (3 - 1); [L40] const SORT_40 mask_SORT_40 = (SORT_40)-1 >> (sizeof(SORT_40) * 8 - 2); [L41] const SORT_40 msb_SORT_40 = (SORT_40)1 << (2 - 1); [L43] const SORT_13 var_15 = 8; [L44] const SORT_19 var_20 = 7; [L45] const SORT_19 var_25 = 6; [L46] const SORT_19 var_30 = 5; [L47] const SORT_19 var_35 = 4; [L48] const SORT_40 var_41 = 3; [L49] const SORT_40 var_46 = 2; [L50] const SORT_1 var_51 = 1; [L51] const SORT_13 var_64 = 9; [L52] const SORT_11 var_81 = 0; [L53] const SORT_1 var_111 = 0; [L54] const SORT_3 var_268 = 0; [L56] SORT_1 input_2; [L57] SORT_3 input_4; [L58] SORT_1 input_5; [L59] SORT_1 input_6; [L60] SORT_1 input_7; [L61] SORT_1 input_8; [L62] SORT_3 input_9; [L63] SORT_1 input_109; [L65] SORT_3 state_10 = __VERIFIER_nondet_uint() & mask_SORT_3; [L66] SORT_11 state_12 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L67] SORT_3 state_18 = __VERIFIER_nondet_uint() & mask_SORT_3; [L68] SORT_3 state_24 = __VERIFIER_nondet_uint() & mask_SORT_3; [L69] SORT_3 state_29 = __VERIFIER_nondet_uint() & mask_SORT_3; [L70] SORT_3 state_34 = __VERIFIER_nondet_uint() & mask_SORT_3; [L71] SORT_3 state_39 = __VERIFIER_nondet_uint() & mask_SORT_3; [L72] SORT_3 state_45 = __VERIFIER_nondet_uint() & mask_SORT_3; [L73] SORT_3 state_50 = __VERIFIER_nondet_uint() & mask_SORT_3; [L74] SORT_3 state_55 = __VERIFIER_nondet_uint() & mask_SORT_3; [L75] SORT_11 state_60 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L76] SORT_1 state_68 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L77] SORT_1 state_69 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L78] SORT_11 state_72 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L79] SORT_3 state_87 = __VERIFIER_nondet_uint() & mask_SORT_3; [L80] SORT_1 state_91 = __VERIFIER_nondet_uchar() & mask_SORT_1; [L81] SORT_11 state_136 = __VERIFIER_nondet_uchar() & mask_SORT_11; [L83] SORT_1 init_92_arg_1 = var_51; [L84] state_91 = init_92_arg_1 VAL [init_92_arg_1=1, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, state_10=16, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=1, state_50=1, state_55=14, state_60=255, state_68=1, state_69=1, state_72=0, state_87=1, state_91=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_81=0] [L87] input_2 = __VERIFIER_nondet_uchar() [L88] input_4 = __VERIFIER_nondet_uint() [L89] input_5 = __VERIFIER_nondet_uchar() [L90] input_6 = __VERIFIER_nondet_uchar() [L91] input_7 = __VERIFIER_nondet_uchar() [L92] input_7 = input_7 & mask_SORT_1 [L93] input_8 = __VERIFIER_nondet_uchar() [L94] input_9 = __VERIFIER_nondet_uint() [L95] input_109 = __VERIFIER_nondet_uchar() [L97] SORT_1 var_93_arg_0 = input_7; [L98] SORT_1 var_93_arg_1 = state_91; [L99] SORT_1 var_93 = var_93_arg_0 == var_93_arg_1; [L100] SORT_1 var_94_arg_0 = var_51; [L101] SORT_1 var_94 = ~var_94_arg_0; [L102] SORT_1 var_95_arg_0 = var_93; [L103] SORT_1 var_95_arg_1 = var_94; [L104] SORT_1 var_95 = var_95_arg_0 | var_95_arg_1; [L105] var_95 = var_95 & mask_SORT_1 [L106] SORT_1 constr_96_arg_0 = var_95; VAL [constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=30, input_4=14, input_5=29, input_6=27, input_7=0, input_8=0, input_9=16, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, state_10=16, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=1, state_50=1, state_55=14, state_60=255, state_68=1, state_69=1, state_72=0, state_87=1, state_91=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255] [L107] CALL assume_abort_if_not(constr_96_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L107] RET assume_abort_if_not(constr_96_arg_0) VAL [constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=30, input_4=14, input_5=29, input_6=27, input_7=0, input_8=0, input_9=16, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, state_10=16, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=1, state_50=1, state_55=14, state_60=255, state_68=1, state_69=1, state_72=0, state_87=1, state_91=1, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255] [L108] SORT_13 var_65_arg_0 = var_64; [L109] var_65_arg_0 = var_65_arg_0 & mask_SORT_13 [L110] SORT_11 var_65 = var_65_arg_0; [L111] SORT_11 var_66_arg_0 = state_60; [L112] SORT_11 var_66_arg_1 = var_65; [L113] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L114] SORT_1 var_97_arg_0 = var_66; [L115] SORT_1 var_97 = ~var_97_arg_0; [L116] SORT_1 var_98_arg_0 = input_6; [L117] SORT_1 var_98 = ~var_98_arg_0; [L118] SORT_1 var_99_arg_0 = var_97; [L119] SORT_1 var_99_arg_1 = var_98; [L120] SORT_1 var_99 = var_99_arg_0 | var_99_arg_1; [L121] SORT_1 var_100_arg_0 = var_51; [L122] SORT_1 var_100 = ~var_100_arg_0; [L123] SORT_1 var_101_arg_0 = var_99; [L124] SORT_1 var_101_arg_1 = var_100; [L125] SORT_1 var_101 = var_101_arg_0 | var_101_arg_1; [L126] var_101 = var_101 & mask_SORT_1 [L127] SORT_1 constr_102_arg_0 = var_101; VAL [constr_102_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=30, input_4=14, input_5=29, input_6=27, input_7=0, input_8=0, input_9=16, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, state_10=16, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=1, state_50=1, state_55=14, state_60=255, state_68=1, state_69=1, state_72=0, state_87=1, state_91=1, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_65=1, var_65_arg_0=1, var_66=0, var_66_arg_0=255, var_66_arg_1=1, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=1, var_98_arg_0=27, var_99=1, var_99_arg_0=0, var_99_arg_1=1] [L128] CALL assume_abort_if_not(constr_102_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L128] RET assume_abort_if_not(constr_102_arg_0) VAL [constr_102_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=30, input_4=14, input_5=29, input_6=27, input_7=0, input_8=0, input_9=16, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, state_10=16, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=1, state_50=1, state_55=14, state_60=255, state_68=1, state_69=1, state_72=0, state_87=1, state_91=1, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_64=9, var_65=1, var_65_arg_0=1, var_66=0, var_66_arg_0=255, var_66_arg_1=1, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=1, var_98_arg_0=27, var_99=1, var_99_arg_0=0, var_99_arg_1=1] [L129] SORT_11 var_61_arg_0 = state_60; [L130] SORT_1 var_61 = var_61_arg_0 != 0; [L131] SORT_1 var_62_arg_0 = var_61; [L132] SORT_1 var_62 = ~var_62_arg_0; [L133] SORT_1 var_103_arg_0 = var_62; [L134] SORT_1 var_103 = ~var_103_arg_0; [L135] SORT_1 var_104_arg_0 = input_5; [L136] SORT_1 var_104 = ~var_104_arg_0; [L137] SORT_1 var_105_arg_0 = var_103; [L138] SORT_1 var_105_arg_1 = var_104; [L139] SORT_1 var_105 = var_105_arg_0 | var_105_arg_1; [L140] SORT_1 var_106_arg_0 = var_51; [L141] SORT_1 var_106 = ~var_106_arg_0; [L142] SORT_1 var_107_arg_0 = var_105; [L143] SORT_1 var_107_arg_1 = var_106; [L144] SORT_1 var_107 = var_107_arg_0 | var_107_arg_1; [L145] var_107 = var_107 & mask_SORT_1 [L146] SORT_1 constr_108_arg_0 = var_107; VAL [constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=30, input_4=14, input_5=29, input_6=27, input_7=0, input_8=0, input_9=16, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, state_10=16, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=1, state_50=1, state_55=14, state_60=255, state_68=1, state_69=1, state_72=0, state_87=1, state_91=1, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=0, var_103_arg_0=19, var_104=1, var_104_arg_0=29, var_105=1, var_105_arg_0=0, var_105_arg_1=1, var_106=2, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=2, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_61=1, var_61_arg_0=255, var_62=19, var_62_arg_0=1, var_64=9, var_65=1, var_65_arg_0=1, var_66=0, var_66_arg_0=255, var_66_arg_1=1, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=1, var_98_arg_0=27, var_99=1, var_99_arg_0=0, var_99_arg_1=1] [L147] CALL assume_abort_if_not(constr_108_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L147] RET assume_abort_if_not(constr_108_arg_0) VAL [constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=30, input_4=14, input_5=29, input_6=27, input_7=0, input_8=0, input_9=16, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, state_10=16, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=1, state_50=1, state_55=14, state_60=255, state_68=1, state_69=1, state_72=0, state_87=1, state_91=1, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=0, var_103_arg_0=19, var_104=1, var_104_arg_0=29, var_105=1, var_105_arg_0=0, var_105_arg_1=1, var_106=2, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=2, var_111=0, var_15=8, var_20=7, var_25=6, var_268=0, var_30=5, var_35=4, var_41=3, var_46=2, var_51=1, var_61=1, var_61_arg_0=255, var_62=19, var_62_arg_0=1, var_64=9, var_65=1, var_65_arg_0=1, var_66=0, var_66_arg_0=255, var_66_arg_1=1, var_81=0, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=1, var_98_arg_0=27, var_99=1, var_99_arg_0=0, var_99_arg_1=1] [L149] SORT_1 var_112_arg_0 = state_91; [L150] SORT_1 var_112_arg_1 = var_111; [L151] SORT_1 var_112_arg_2 = var_51; [L152] EXPR var_112_arg_0 ? var_112_arg_1 : var_112_arg_2 [L152] SORT_1 var_112 = var_112_arg_0 ? var_112_arg_1 : var_112_arg_2; [L153] SORT_1 var_70_arg_0 = state_69; [L154] SORT_1 var_70 = ~var_70_arg_0; [L155] SORT_1 var_71_arg_0 = state_68; [L156] SORT_1 var_71_arg_1 = var_70; [L157] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L158] SORT_11 var_73_arg_0 = state_72; [L159] SORT_1 var_73 = var_73_arg_0 != 0; [L160] SORT_1 var_74_arg_0 = var_71; [L161] SORT_1 var_74_arg_1 = var_73; [L162] SORT_1 var_74 = var_74_arg_0 & var_74_arg_1; [L163] SORT_1 var_75_arg_0 = state_68; [L164] SORT_1 var_75 = ~var_75_arg_0; [L165] SORT_1 var_76_arg_0 = input_6; [L166] SORT_1 var_76_arg_1 = var_75; [L167] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L168] SORT_1 var_77_arg_0 = var_76; [L169] var_77_arg_0 = var_77_arg_0 & mask_SORT_1 [L170] SORT_11 var_77 = var_77_arg_0; [L171] SORT_11 var_78_arg_0 = state_72; [L172] SORT_11 var_78_arg_1 = var_77; [L173] SORT_11 var_78 = var_78_arg_0 + var_78_arg_1; [L174] SORT_1 var_79_arg_0 = input_5; [L175] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L176] SORT_11 var_79 = var_79_arg_0; [L177] SORT_11 var_80_arg_0 = var_78; [L178] SORT_11 var_80_arg_1 = var_79; [L179] SORT_11 var_80 = var_80_arg_0 - var_80_arg_1; [L180] SORT_1 var_82_arg_0 = input_7; [L181] SORT_11 var_82_arg_1 = var_81; [L182] SORT_11 var_82_arg_2 = var_80; [L183] EXPR var_82_arg_0 ? var_82_arg_1 : var_82_arg_2 [L183] SORT_11 var_82 = var_82_arg_0 ? var_82_arg_1 : var_82_arg_2; [L184] var_82 = var_82 & mask_SORT_11 [L185] SORT_11 var_83_arg_0 = var_82; [L186] SORT_1 var_83 = var_83_arg_0 != 0; [L187] SORT_1 var_84_arg_0 = var_83; [L188] SORT_1 var_84 = ~var_84_arg_0; [L189] SORT_1 var_85_arg_0 = var_74; [L190] SORT_1 var_85_arg_1 = var_84; [L191] SORT_1 var_85 = var_85_arg_0 & var_85_arg_1; [L192] SORT_1 var_86_arg_0 = var_85; [L193] SORT_1 var_86 = ~var_86_arg_0; [L194] SORT_11 var_14_arg_0 = state_12; [L195] SORT_13 var_14 = var_14_arg_0 >> 0; [L196] var_14 = var_14 & mask_SORT_13 [L197] SORT_13 var_56_arg_0 = var_14; [L198] SORT_1 var_56 = var_56_arg_0 != 0; [L199] SORT_1 var_57_arg_0 = var_56; [L200] SORT_1 var_57 = ~var_57_arg_0; [L201] var_57 = var_57 & mask_SORT_1 [L202] SORT_1 var_52_arg_0 = var_51; [L203] var_52_arg_0 = var_52_arg_0 & mask_SORT_1 [L204] SORT_13 var_52 = var_52_arg_0; [L205] SORT_13 var_53_arg_0 = var_14; [L206] SORT_13 var_53_arg_1 = var_52; [L207] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L208] SORT_40 var_47_arg_0 = var_46; [L209] var_47_arg_0 = var_47_arg_0 & mask_SORT_40 [L210] SORT_13 var_47 = var_47_arg_0; [L211] SORT_13 var_48_arg_0 = var_14; [L212] SORT_13 var_48_arg_1 = var_47; [L213] SORT_1 var_48 = var_48_arg_0 == var_48_arg_1; [L214] SORT_40 var_42_arg_0 = var_41; [L215] var_42_arg_0 = var_42_arg_0 & mask_SORT_40 [L216] SORT_13 var_42 = var_42_arg_0; [L217] SORT_13 var_43_arg_0 = var_14; [L218] SORT_13 var_43_arg_1 = var_42; [L219] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L220] SORT_19 var_36_arg_0 = var_35; [L221] var_36_arg_0 = var_36_arg_0 & mask_SORT_19 [L222] SORT_13 var_36 = var_36_arg_0; [L223] SORT_13 var_37_arg_0 = var_14; [L224] SORT_13 var_37_arg_1 = var_36; [L225] SORT_1 var_37 = var_37_arg_0 == var_37_arg_1; [L226] SORT_19 var_31_arg_0 = var_30; [L227] var_31_arg_0 = var_31_arg_0 & mask_SORT_19 [L228] SORT_13 var_31 = var_31_arg_0; [L229] SORT_13 var_32_arg_0 = var_14; [L230] SORT_13 var_32_arg_1 = var_31; [L231] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L232] SORT_19 var_26_arg_0 = var_25; [L233] var_26_arg_0 = var_26_arg_0 & mask_SORT_19 [L234] SORT_13 var_26 = var_26_arg_0; [L235] SORT_13 var_27_arg_0 = var_14; [L236] SORT_13 var_27_arg_1 = var_26; [L237] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L238] SORT_19 var_21_arg_0 = var_20; [L239] var_21_arg_0 = var_21_arg_0 & mask_SORT_19 [L240] SORT_13 var_21 = var_21_arg_0; [L241] SORT_13 var_22_arg_0 = var_14; [L242] SORT_13 var_22_arg_1 = var_21; [L243] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L244] SORT_13 var_16_arg_0 = var_14; [L245] SORT_13 var_16_arg_1 = var_15; [L246] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L247] SORT_1 var_17_arg_0 = var_16; [L248] SORT_3 var_17_arg_1 = state_10; [L249] SORT_3 var_17_arg_2 = input_9; [L250] EXPR var_17_arg_0 ? var_17_arg_1 : var_17_arg_2 [L250] SORT_3 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L251] SORT_1 var_23_arg_0 = var_22; [L252] SORT_3 var_23_arg_1 = state_18; [L253] SORT_3 var_23_arg_2 = var_17; [L254] EXPR var_23_arg_0 ? var_23_arg_1 : var_23_arg_2 [L254] SORT_3 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L255] SORT_1 var_28_arg_0 = var_27; [L256] SORT_3 var_28_arg_1 = state_24; [L257] SORT_3 var_28_arg_2 = var_23; [L258] EXPR var_28_arg_0 ? var_28_arg_1 : var_28_arg_2 [L258] SORT_3 var_28 = var_28_arg_0 ? var_28_arg_1 : var_28_arg_2; [L259] SORT_1 var_33_arg_0 = var_32; [L260] SORT_3 var_33_arg_1 = state_29; [L261] SORT_3 var_33_arg_2 = var_28; [L262] EXPR var_33_arg_0 ? var_33_arg_1 : var_33_arg_2 [L262] SORT_3 var_33 = var_33_arg_0 ? var_33_arg_1 : var_33_arg_2; [L263] SORT_1 var_38_arg_0 = var_37; [L264] SORT_3 var_38_arg_1 = state_34; [L265] SORT_3 var_38_arg_2 = var_33; [L266] EXPR var_38_arg_0 ? var_38_arg_1 : var_38_arg_2 [L266] SORT_3 var_38 = var_38_arg_0 ? var_38_arg_1 : var_38_arg_2; [L267] SORT_1 var_44_arg_0 = var_43; [L268] SORT_3 var_44_arg_1 = state_39; [L269] SORT_3 var_44_arg_2 = var_38; [L270] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L270] SORT_3 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L271] SORT_1 var_49_arg_0 = var_48; [L272] SORT_3 var_49_arg_1 = state_45; [L273] SORT_3 var_49_arg_2 = var_44; [L274] EXPR var_49_arg_0 ? var_49_arg_1 : var_49_arg_2 [L274] SORT_3 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L275] SORT_1 var_54_arg_0 = var_53; [L276] SORT_3 var_54_arg_1 = state_50; [L277] SORT_3 var_54_arg_2 = var_49; [L278] EXPR var_54_arg_0 ? var_54_arg_1 : var_54_arg_2 [L278] SORT_3 var_54 = var_54_arg_0 ? var_54_arg_1 : var_54_arg_2; [L279] SORT_1 var_58_arg_0 = var_57; [L280] SORT_3 var_58_arg_1 = state_55; [L281] SORT_3 var_58_arg_2 = var_54; [L282] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L282] SORT_3 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L283] var_58 = var_58 & mask_SORT_3 [L284] SORT_3 var_88_arg_0 = state_87; [L285] SORT_3 var_88_arg_1 = var_58; [L286] SORT_1 var_88 = var_88_arg_0 == var_88_arg_1; [L287] SORT_1 var_89_arg_0 = var_86; [L288] SORT_1 var_89_arg_1 = var_88; [L289] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L290] SORT_1 var_110_arg_0 = state_91; [L291] SORT_1 var_110_arg_1 = input_109; [L292] SORT_1 var_110_arg_2 = var_89; [L293] EXPR var_110_arg_0 ? var_110_arg_1 : var_110_arg_2 [L293] SORT_1 var_110 = var_110_arg_0 ? var_110_arg_1 : var_110_arg_2; [L294] SORT_1 var_113_arg_0 = var_110; [L295] SORT_1 var_113 = ~var_113_arg_0; [L296] SORT_1 var_114_arg_0 = var_112; [L297] SORT_1 var_114_arg_1 = var_113; [L298] SORT_1 var_114 = var_114_arg_0 & var_114_arg_1; [L299] var_114 = var_114 & mask_SORT_1 [L300] SORT_1 bad_115_arg_0 = var_114; [L301] CALL __VERIFIER_assert(!(bad_115_arg_0)) [L20] COND FALSE !(!(cond)) VAL [\old(cond)=1, cond=1] [L301] RET __VERIFIER_assert(!(bad_115_arg_0)) [L303] SORT_11 var_137_arg_0 = state_136; [L304] SORT_13 var_137 = var_137_arg_0 >> 0; [L305] var_137 = var_137 & mask_SORT_13 [L306] SORT_13 var_194_arg_0 = var_137; [L307] SORT_13 var_194_arg_1 = var_15; [L308] SORT_1 var_194 = var_194_arg_0 == var_194_arg_1; [L309] SORT_1 var_195_arg_0 = input_6; [L310] SORT_1 var_195_arg_1 = var_194; [L311] SORT_1 var_195 = var_195_arg_0 & var_195_arg_1; [L312] var_195 = var_195 & mask_SORT_1 [L313] SORT_1 var_267_arg_0 = var_195; [L314] SORT_3 var_267_arg_1 = input_4; [L315] SORT_3 var_267_arg_2 = state_10; [L316] EXPR var_267_arg_0 ? var_267_arg_1 : var_267_arg_2 [L316] SORT_3 var_267 = var_267_arg_0 ? var_267_arg_1 : var_267_arg_2; [L317] SORT_1 var_269_arg_0 = input_7; [L318] SORT_3 var_269_arg_1 = var_268; [L319] SORT_3 var_269_arg_2 = var_267; [L320] EXPR var_269_arg_0 ? var_269_arg_1 : var_269_arg_2 [L320] SORT_3 var_269 = var_269_arg_0 ? var_269_arg_1 : var_269_arg_2; [L321] SORT_3 next_270_arg_1 = var_269; [L322] SORT_1 var_119_arg_0 = input_6; [L323] SORT_1 var_119_arg_1 = input_5; [L324] SORT_1 var_119 = var_119_arg_0 | var_119_arg_1; [L325] SORT_1 var_120_arg_0 = var_119; [L326] SORT_1 var_120_arg_1 = input_7; [L327] SORT_1 var_120 = var_120_arg_0 | var_120_arg_1; [L328] var_120 = var_120 & mask_SORT_1 [L329] SORT_1 var_198_arg_0 = input_5; [L330] var_198_arg_0 = var_198_arg_0 & mask_SORT_1 [L331] SORT_11 var_198 = var_198_arg_0; [L332] SORT_11 var_199_arg_0 = state_12; [L333] SORT_11 var_199_arg_1 = var_198; [L334] SORT_11 var_199 = var_199_arg_0 + var_199_arg_1; [L335] SORT_1 var_271_arg_0 = var_120; [L336] SORT_11 var_271_arg_1 = var_199; [L337] SORT_11 var_271_arg_2 = state_12; [L338] EXPR var_271_arg_0 ? var_271_arg_1 : var_271_arg_2 [L338] SORT_11 var_271 = var_271_arg_0 ? var_271_arg_1 : var_271_arg_2; [L339] SORT_1 var_272_arg_0 = input_7; [L340] SORT_11 var_272_arg_1 = var_81; [L341] SORT_11 var_272_arg_2 = var_271; [L342] EXPR var_272_arg_0 ? var_272_arg_1 : var_272_arg_2 [L342] SORT_11 var_272 = var_272_arg_0 ? var_272_arg_1 : var_272_arg_2; [L343] SORT_11 next_273_arg_1 = var_272; [L344] SORT_19 var_187_arg_0 = var_20; [L345] var_187_arg_0 = var_187_arg_0 & mask_SORT_19 [L346] SORT_13 var_187 = var_187_arg_0; [L347] SORT_13 var_188_arg_0 = var_137; [L348] SORT_13 var_188_arg_1 = var_187; [L349] SORT_1 var_188 = var_188_arg_0 == var_188_arg_1; [L350] SORT_1 var_189_arg_0 = input_6; [L351] SORT_1 var_189_arg_1 = var_188; [L352] SORT_1 var_189 = var_189_arg_0 & var_189_arg_1; [L353] var_189 = var_189 & mask_SORT_1 [L354] SORT_1 var_274_arg_0 = var_189; [L355] SORT_3 var_274_arg_1 = input_4; [L356] SORT_3 var_274_arg_2 = state_18; [L357] EXPR var_274_arg_0 ? var_274_arg_1 : var_274_arg_2 [L357] SORT_3 var_274 = var_274_arg_0 ? var_274_arg_1 : var_274_arg_2; [L358] SORT_1 var_275_arg_0 = input_7; [L359] SORT_3 var_275_arg_1 = var_268; [L360] SORT_3 var_275_arg_2 = var_274; [L361] EXPR var_275_arg_0 ? var_275_arg_1 : var_275_arg_2 [L361] SORT_3 var_275 = var_275_arg_0 ? var_275_arg_1 : var_275_arg_2; [L362] SORT_3 next_276_arg_1 = var_275; [L363] SORT_19 var_180_arg_0 = var_25; [L364] var_180_arg_0 = var_180_arg_0 & mask_SORT_19 [L365] SORT_13 var_180 = var_180_arg_0; [L366] SORT_13 var_181_arg_0 = var_137; [L367] SORT_13 var_181_arg_1 = var_180; [L368] SORT_1 var_181 = var_181_arg_0 == var_181_arg_1; [L369] SORT_1 var_182_arg_0 = input_6; [L370] SORT_1 var_182_arg_1 = var_181; [L371] SORT_1 var_182 = var_182_arg_0 & var_182_arg_1; [L372] var_182 = var_182 & mask_SORT_1 [L373] SORT_1 var_277_arg_0 = var_182; [L374] SORT_3 var_277_arg_1 = input_4; [L375] SORT_3 var_277_arg_2 = state_24; [L376] EXPR var_277_arg_0 ? var_277_arg_1 : var_277_arg_2 [L376] SORT_3 var_277 = var_277_arg_0 ? var_277_arg_1 : var_277_arg_2; [L377] SORT_1 var_278_arg_0 = input_7; [L378] SORT_3 var_278_arg_1 = var_268; [L379] SORT_3 var_278_arg_2 = var_277; [L380] EXPR var_278_arg_0 ? var_278_arg_1 : var_278_arg_2 [L380] SORT_3 var_278 = var_278_arg_0 ? var_278_arg_1 : var_278_arg_2; [L381] SORT_3 next_279_arg_1 = var_278; [L382] SORT_19 var_173_arg_0 = var_30; [L383] var_173_arg_0 = var_173_arg_0 & mask_SORT_19 [L384] SORT_13 var_173 = var_173_arg_0; [L385] SORT_13 var_174_arg_0 = var_137; [L386] SORT_13 var_174_arg_1 = var_173; [L387] SORT_1 var_174 = var_174_arg_0 == var_174_arg_1; [L388] SORT_1 var_175_arg_0 = input_6; [L389] SORT_1 var_175_arg_1 = var_174; [L390] SORT_1 var_175 = var_175_arg_0 & var_175_arg_1; [L391] var_175 = var_175 & mask_SORT_1 [L392] SORT_1 var_280_arg_0 = var_175; [L393] SORT_3 var_280_arg_1 = input_4; [L394] SORT_3 var_280_arg_2 = state_29; [L395] EXPR var_280_arg_0 ? var_280_arg_1 : var_280_arg_2 [L395] SORT_3 var_280 = var_280_arg_0 ? var_280_arg_1 : var_280_arg_2; [L396] SORT_1 var_281_arg_0 = input_7; [L397] SORT_3 var_281_arg_1 = var_268; [L398] SORT_3 var_281_arg_2 = var_280; [L399] EXPR var_281_arg_0 ? var_281_arg_1 : var_281_arg_2 [L399] SORT_3 var_281 = var_281_arg_0 ? var_281_arg_1 : var_281_arg_2; [L400] SORT_3 next_282_arg_1 = var_281; [L401] SORT_19 var_166_arg_0 = var_35; [L402] var_166_arg_0 = var_166_arg_0 & mask_SORT_19 [L403] SORT_13 var_166 = var_166_arg_0; [L404] SORT_13 var_167_arg_0 = var_137; [L405] SORT_13 var_167_arg_1 = var_166; [L406] SORT_1 var_167 = var_167_arg_0 == var_167_arg_1; [L407] SORT_1 var_168_arg_0 = input_6; [L408] SORT_1 var_168_arg_1 = var_167; [L409] SORT_1 var_168 = var_168_arg_0 & var_168_arg_1; [L410] var_168 = var_168 & mask_SORT_1 [L411] SORT_1 var_283_arg_0 = var_168; [L412] SORT_3 var_283_arg_1 = input_4; [L413] SORT_3 var_283_arg_2 = state_34; [L414] EXPR var_283_arg_0 ? var_283_arg_1 : var_283_arg_2 [L414] SORT_3 var_283 = var_283_arg_0 ? var_283_arg_1 : var_283_arg_2; [L415] SORT_1 var_284_arg_0 = input_7; [L416] SORT_3 var_284_arg_1 = var_268; [L417] SORT_3 var_284_arg_2 = var_283; [L418] EXPR var_284_arg_0 ? var_284_arg_1 : var_284_arg_2 [L418] SORT_3 var_284 = var_284_arg_0 ? var_284_arg_1 : var_284_arg_2; [L419] SORT_3 next_285_arg_1 = var_284; [L420] SORT_40 var_159_arg_0 = var_41; [L421] var_159_arg_0 = var_159_arg_0 & mask_SORT_40 [L422] SORT_13 var_159 = var_159_arg_0; [L423] SORT_13 var_160_arg_0 = var_137; [L424] SORT_13 var_160_arg_1 = var_159; [L425] SORT_1 var_160 = var_160_arg_0 == var_160_arg_1; [L426] SORT_1 var_161_arg_0 = input_6; [L427] SORT_1 var_161_arg_1 = var_160; [L428] SORT_1 var_161 = var_161_arg_0 & var_161_arg_1; [L429] var_161 = var_161 & mask_SORT_1 [L430] SORT_1 var_286_arg_0 = var_161; [L431] SORT_3 var_286_arg_1 = input_4; [L432] SORT_3 var_286_arg_2 = state_39; [L433] EXPR var_286_arg_0 ? var_286_arg_1 : var_286_arg_2 [L433] SORT_3 var_286 = var_286_arg_0 ? var_286_arg_1 : var_286_arg_2; [L434] SORT_1 var_287_arg_0 = input_7; [L435] SORT_3 var_287_arg_1 = var_268; [L436] SORT_3 var_287_arg_2 = var_286; [L437] EXPR var_287_arg_0 ? var_287_arg_1 : var_287_arg_2 [L437] SORT_3 var_287 = var_287_arg_0 ? var_287_arg_1 : var_287_arg_2; [L438] SORT_3 next_288_arg_1 = var_287; [L439] SORT_40 var_152_arg_0 = var_46; [L440] var_152_arg_0 = var_152_arg_0 & mask_SORT_40 [L441] SORT_13 var_152 = var_152_arg_0; [L442] SORT_13 var_153_arg_0 = var_137; [L443] SORT_13 var_153_arg_1 = var_152; [L444] SORT_1 var_153 = var_153_arg_0 == var_153_arg_1; [L445] SORT_1 var_154_arg_0 = input_6; [L446] SORT_1 var_154_arg_1 = var_153; [L447] SORT_1 var_154 = var_154_arg_0 & var_154_arg_1; [L448] var_154 = var_154 & mask_SORT_1 [L449] SORT_1 var_289_arg_0 = var_154; [L450] SORT_3 var_289_arg_1 = input_4; [L451] SORT_3 var_289_arg_2 = state_45; [L452] EXPR var_289_arg_0 ? var_289_arg_1 : var_289_arg_2 [L452] SORT_3 var_289 = var_289_arg_0 ? var_289_arg_1 : var_289_arg_2; [L453] SORT_1 var_290_arg_0 = input_7; [L454] SORT_3 var_290_arg_1 = var_268; [L455] SORT_3 var_290_arg_2 = var_289; [L456] EXPR var_290_arg_0 ? var_290_arg_1 : var_290_arg_2 [L456] SORT_3 var_290 = var_290_arg_0 ? var_290_arg_1 : var_290_arg_2; [L457] SORT_3 next_291_arg_1 = var_290; [L458] SORT_1 var_145_arg_0 = var_51; [L459] var_145_arg_0 = var_145_arg_0 & mask_SORT_1 [L460] SORT_13 var_145 = var_145_arg_0; [L461] SORT_13 var_146_arg_0 = var_137; [L462] SORT_13 var_146_arg_1 = var_145; [L463] SORT_1 var_146 = var_146_arg_0 == var_146_arg_1; [L464] SORT_1 var_147_arg_0 = input_6; [L465] SORT_1 var_147_arg_1 = var_146; [L466] SORT_1 var_147 = var_147_arg_0 & var_147_arg_1; [L467] var_147 = var_147 & mask_SORT_1 [L468] SORT_1 var_292_arg_0 = var_147; [L469] SORT_3 var_292_arg_1 = input_4; [L470] SORT_3 var_292_arg_2 = state_50; [L471] EXPR var_292_arg_0 ? var_292_arg_1 : var_292_arg_2 [L471] SORT_3 var_292 = var_292_arg_0 ? var_292_arg_1 : var_292_arg_2; [L472] SORT_1 var_293_arg_0 = input_7; [L473] SORT_3 var_293_arg_1 = var_268; [L474] SORT_3 var_293_arg_2 = var_292; [L475] EXPR var_293_arg_0 ? var_293_arg_1 : var_293_arg_2 [L475] SORT_3 var_293 = var_293_arg_0 ? var_293_arg_1 : var_293_arg_2; [L476] SORT_3 next_294_arg_1 = var_293; [L477] SORT_13 var_138_arg_0 = var_137; [L478] SORT_1 var_138 = var_138_arg_0 != 0; [L479] SORT_1 var_139_arg_0 = var_138; [L480] SORT_1 var_139 = ~var_139_arg_0; [L481] SORT_1 var_140_arg_0 = input_6; [L482] SORT_1 var_140_arg_1 = var_139; [L483] SORT_1 var_140 = var_140_arg_0 & var_140_arg_1; [L484] var_140 = var_140 & mask_SORT_1 [L485] SORT_1 var_295_arg_0 = var_140; [L486] SORT_3 var_295_arg_1 = input_4; [L487] SORT_3 var_295_arg_2 = state_55; [L488] EXPR var_295_arg_0 ? var_295_arg_1 : var_295_arg_2 [L488] SORT_3 var_295 = var_295_arg_0 ? var_295_arg_1 : var_295_arg_2; [L489] SORT_1 var_296_arg_0 = input_7; [L490] SORT_3 var_296_arg_1 = var_268; [L491] SORT_3 var_296_arg_2 = var_295; [L492] EXPR var_296_arg_0 ? var_296_arg_1 : var_296_arg_2 [L492] SORT_3 var_296 = var_296_arg_0 ? var_296_arg_1 : var_296_arg_2; [L493] SORT_3 next_297_arg_1 = var_296; [L494] SORT_1 var_298_arg_0 = input_6; [L495] var_298_arg_0 = var_298_arg_0 & mask_SORT_1 [L496] SORT_11 var_298 = var_298_arg_0; [L497] SORT_11 var_299_arg_0 = state_60; [L498] SORT_11 var_299_arg_1 = var_298; [L499] SORT_11 var_299 = var_299_arg_0 + var_299_arg_1; [L500] SORT_1 var_300_arg_0 = input_5; [L501] var_300_arg_0 = var_300_arg_0 & mask_SORT_1 [L502] SORT_11 var_300 = var_300_arg_0; [L503] SORT_11 var_301_arg_0 = var_299; [L504] SORT_11 var_301_arg_1 = var_300; [L505] SORT_11 var_301 = var_301_arg_0 - var_301_arg_1; [L506] SORT_1 var_302_arg_0 = input_7; [L507] SORT_11 var_302_arg_1 = var_81; [L508] SORT_11 var_302_arg_2 = var_301; [L509] EXPR var_302_arg_0 ? var_302_arg_1 : var_302_arg_2 [L509] SORT_11 var_302 = var_302_arg_0 ? var_302_arg_1 : var_302_arg_2; [L510] var_302 = var_302 & mask_SORT_11 [L511] SORT_11 next_303_arg_1 = var_302; [L512] SORT_1 var_228_arg_0 = state_68; [L513] SORT_1 var_228 = ~var_228_arg_0; [L514] var_228 = var_228 & mask_SORT_1 [L515] SORT_1 var_224_arg_0 = input_8; [L516] SORT_1 var_224_arg_1 = input_6; [L517] SORT_1 var_224 = var_224_arg_0 & var_224_arg_1; [L518] SORT_1 var_225_arg_0 = state_68; [L519] SORT_1 var_225_arg_1 = var_224; [L520] SORT_1 var_225 = var_225_arg_0 | var_225_arg_1; [L521] SORT_1 var_304_arg_0 = var_228; [L522] SORT_1 var_304_arg_1 = var_225; [L523] SORT_1 var_304_arg_2 = state_68; [L524] EXPR var_304_arg_0 ? var_304_arg_1 : var_304_arg_2 [L524] SORT_1 var_304 = var_304_arg_0 ? var_304_arg_1 : var_304_arg_2; [L525] SORT_1 var_305_arg_0 = input_7; [L526] SORT_1 var_305_arg_1 = var_111; [L527] SORT_1 var_305_arg_2 = var_304; [L528] EXPR var_305_arg_0 ? var_305_arg_1 : var_305_arg_2 [L528] SORT_1 var_305 = var_305_arg_0 ? var_305_arg_1 : var_305_arg_2; [L529] SORT_1 next_306_arg_1 = var_305; [L530] SORT_1 var_236_arg_0 = var_85; [L531] SORT_1 var_236_arg_1 = state_69; [L532] SORT_1 var_236 = var_236_arg_0 | var_236_arg_1; [L533] SORT_1 var_307_arg_0 = var_51; [L534] SORT_1 var_307_arg_1 = var_236; [L535] SORT_1 var_307_arg_2 = state_69; [L536] EXPR var_307_arg_0 ? var_307_arg_1 : var_307_arg_2 [L536] SORT_1 var_307 = var_307_arg_0 ? var_307_arg_1 : var_307_arg_2; [L537] SORT_1 var_308_arg_0 = input_7; [L538] SORT_1 var_308_arg_1 = var_111; [L539] SORT_1 var_308_arg_2 = var_307; [L540] EXPR var_308_arg_0 ? var_308_arg_1 : var_308_arg_2 [L540] SORT_1 var_308 = var_308_arg_0 ? var_308_arg_1 : var_308_arg_2; [L541] SORT_1 next_309_arg_1 = var_308; [L542] SORT_1 var_248_arg_0 = input_6; [L543] SORT_1 var_248_arg_1 = input_5; [L544] SORT_1 var_248 = var_248_arg_0 | var_248_arg_1; [L545] SORT_1 var_249_arg_0 = var_248; [L546] SORT_1 var_249_arg_1 = input_7; [L547] SORT_1 var_249 = var_249_arg_0 | var_249_arg_1; [L548] SORT_1 var_250_arg_0 = var_249; [L549] SORT_1 var_250_arg_1 = state_68; [L550] SORT_1 var_250 = var_250_arg_0 | var_250_arg_1; [L551] var_250 = var_250 & mask_SORT_1 [L552] SORT_1 var_310_arg_0 = var_250; [L553] SORT_11 var_310_arg_1 = var_82; [L554] SORT_11 var_310_arg_2 = state_72; [L555] EXPR var_310_arg_0 ? var_310_arg_1 : var_310_arg_2 [L555] SORT_11 var_310 = var_310_arg_0 ? var_310_arg_1 : var_310_arg_2; [L556] SORT_1 var_311_arg_0 = input_7; [L557] SORT_11 var_311_arg_1 = var_81; [L558] SORT_11 var_311_arg_2 = var_310; [L559] EXPR var_311_arg_0 ? var_311_arg_1 : var_311_arg_2 [L559] SORT_11 var_311 = var_311_arg_0 ? var_311_arg_1 : var_311_arg_2; [L560] var_311 = var_311 & mask_SORT_11 [L561] SORT_11 next_312_arg_1 = var_311; [L562] SORT_1 var_233_arg_0 = var_224; [L563] SORT_1 var_233_arg_1 = var_228; [L564] SORT_1 var_233 = var_233_arg_0 & var_233_arg_1; [L565] var_233 = var_233 & mask_SORT_1 [L566] SORT_1 var_313_arg_0 = var_233; [L567] SORT_3 var_313_arg_1 = input_4; [L568] SORT_3 var_313_arg_2 = state_87; [L569] EXPR var_313_arg_0 ? var_313_arg_1 : var_313_arg_2 [L569] SORT_3 var_313 = var_313_arg_0 ? var_313_arg_1 : var_313_arg_2; [L570] SORT_1 var_314_arg_0 = input_7; [L571] SORT_3 var_314_arg_1 = var_268; [L572] SORT_3 var_314_arg_2 = var_313; [L573] EXPR var_314_arg_0 ? var_314_arg_1 : var_314_arg_2 [L573] SORT_3 var_314 = var_314_arg_0 ? var_314_arg_1 : var_314_arg_2; [L574] var_314 = var_314 & mask_SORT_3 [L575] SORT_3 next_315_arg_1 = var_314; [L576] SORT_1 next_316_arg_1 = var_111; [L577] SORT_1 var_204_arg_0 = input_6; [L578] var_204_arg_0 = var_204_arg_0 & mask_SORT_1 [L579] SORT_11 var_204 = var_204_arg_0; [L580] SORT_11 var_205_arg_0 = state_136; [L581] SORT_11 var_205_arg_1 = var_204; [L582] SORT_11 var_205 = var_205_arg_0 + var_205_arg_1; [L583] SORT_1 var_317_arg_0 = var_120; [L584] SORT_11 var_317_arg_1 = var_205; [L585] SORT_11 var_317_arg_2 = state_136; [L586] EXPR var_317_arg_0 ? var_317_arg_1 : var_317_arg_2 [L586] SORT_11 var_317 = var_317_arg_0 ? var_317_arg_1 : var_317_arg_2; [L587] SORT_1 var_318_arg_0 = input_7; [L588] SORT_11 var_318_arg_1 = var_81; [L589] SORT_11 var_318_arg_2 = var_317; [L590] EXPR var_318_arg_0 ? var_318_arg_1 : var_318_arg_2 [L590] SORT_11 var_318 = var_318_arg_0 ? var_318_arg_1 : var_318_arg_2; [L591] SORT_11 next_319_arg_1 = var_318; [L593] state_10 = next_270_arg_1 [L594] state_12 = next_273_arg_1 [L595] state_18 = next_276_arg_1 [L596] state_24 = next_279_arg_1 [L597] state_29 = next_282_arg_1 [L598] state_34 = next_285_arg_1 [L599] state_39 = next_288_arg_1 [L600] state_45 = next_291_arg_1 [L601] state_50 = next_294_arg_1 [L602] state_55 = next_297_arg_1 [L603] state_60 = next_303_arg_1 [L604] state_68 = next_306_arg_1 [L605] state_69 = next_309_arg_1 [L606] state_72 = next_312_arg_1 [L607] state_87 = next_315_arg_1 [L608] state_91 = next_316_arg_1 [L609] state_136 = next_319_arg_1 VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=30, input_4=14, input_5=29, input_6=27, input_7=0, input_8=0, input_9=16, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, next_270_arg_1=14, next_273_arg_1=1, next_276_arg_1=23, next_279_arg_1=0, next_282_arg_1=16, next_285_arg_1=16, next_288_arg_1=14, next_291_arg_1=14, next_294_arg_1=1, next_297_arg_1=14, next_303_arg_1=0, next_306_arg_1=1, next_309_arg_1=1, next_312_arg_1=1, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=255, state_10=14, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=14, state_50=1, state_55=14, state_60=0, state_68=1, state_69=1, state_72=1, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=0, var_103_arg_0=19, var_104=1, var_104_arg_0=29, var_105=1, var_105_arg_0=0, var_105_arg_1=1, var_106=2, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=2, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=255, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=255, var_119=2, var_119_arg_0=27, var_119_arg_1=29, var_120=0, var_120_arg_0=2, var_120_arg_1=0, var_137=8, var_137_arg_0=255, var_138=1, var_138_arg_0=8, var_139=255, var_139_arg_0=1, var_14=1, var_140=1, var_140_arg_0=27, var_140_arg_1=255, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=8, var_146_arg_1=1, var_147=0, var_147_arg_0=27, var_147_arg_1=0, var_14_arg_0=1, var_15=8, var_152=8, var_152_arg_0=8, var_153=1, var_153_arg_0=8, var_153_arg_1=8, var_154=1, var_154_arg_0=27, var_154_arg_1=1, var_159=0, var_159_arg_0=0, var_16=0, var_160=0, var_160_arg_0=8, var_160_arg_1=0, var_161=0, var_161_arg_0=27, var_161_arg_1=0, var_166=0, var_166_arg_0=0, var_167=0, var_167_arg_0=8, var_167_arg_1=0, var_168=0, var_168_arg_0=27, var_168_arg_1=0, var_16_arg_0=1, var_16_arg_1=8, var_17=16, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=8, var_174_arg_1=0, var_175=0, var_175_arg_0=27, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=16, var_17_arg_2=16, var_180=0, var_180_arg_0=0, var_181=0, var_181_arg_0=8, var_181_arg_1=0, var_182=0, var_182_arg_0=27, var_182_arg_1=0, var_187=0, var_187_arg_0=0, var_188=0, var_188_arg_0=8, var_188_arg_1=0, var_189=0, var_189_arg_0=27, var_189_arg_1=0, var_194=1, var_194_arg_0=8, var_194_arg_1=8, var_195=1, var_195_arg_0=27, var_195_arg_1=1, var_198=1, var_198_arg_0=1, var_199=2, var_199_arg_0=1, var_199_arg_1=1, var_20=7, var_204=1, var_204_arg_0=1, var_205=0, var_205_arg_0=255, var_205_arg_1=1, var_21=7, var_21_arg_0=7, var_22=0, var_224=0, var_224_arg_0=0, var_224_arg_1=27, var_225=1, var_225_arg_0=1, var_225_arg_1=0, var_228=1, var_228_arg_0=1, var_22_arg_0=1, var_22_arg_1=7, var_23=16, var_233=0, var_233_arg_0=0, var_233_arg_1=1, var_236=1, var_236_arg_0=0, var_236_arg_1=1, var_23_arg_0=0, var_23_arg_1=23, var_23_arg_2=16, var_248=29, var_248_arg_0=27, var_248_arg_1=29, var_249=1, var_249_arg_0=29, var_249_arg_1=0, var_25=6, var_250=1, var_250_arg_0=1, var_250_arg_1=1, var_26=252, var_267=14, var_267_arg_0=1, var_267_arg_1=14, var_267_arg_2=16, var_268=0, var_269=14, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=14, var_26_arg_0=252, var_27=0, var_271=1, var_271_arg_0=0, var_271_arg_1=2, var_271_arg_2=1, var_272=1, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=1, var_274=23, var_274_arg_0=0, var_274_arg_1=14, var_274_arg_2=23, var_275=23, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=23, var_277=0, var_277_arg_0=0, var_277_arg_1=14, var_277_arg_2=0, var_278=0, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=0, var_27_arg_0=1, var_27_arg_1=252, var_28=16, var_280=16, var_280_arg_0=0, var_280_arg_1=14, var_280_arg_2=16, var_281=16, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=16, var_283=16, var_283_arg_0=0, var_283_arg_1=14, var_283_arg_2=16, var_284=16, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=16, var_286=14, var_286_arg_0=0, var_286_arg_1=14, var_286_arg_2=14, var_287=14, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=14, var_289=14, var_289_arg_0=1, var_289_arg_1=14, var_289_arg_2=1, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=16, var_290=14, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=14, var_292=1, var_292_arg_0=0, var_292_arg_1=14, var_292_arg_2=1, var_293=1, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=1, var_295=14, var_295_arg_0=1, var_295_arg_1=14, var_295_arg_2=14, var_296=14, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=14, var_298=1, var_298_arg_0=1, var_299=0, var_299_arg_0=255, var_299_arg_1=1, var_30=5, var_300=1, var_300_arg_0=1, var_301=255, var_301_arg_0=0, var_301_arg_1=1, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=255, var_304=1, var_304_arg_0=1, var_304_arg_1=1, var_304_arg_2=1, var_305=1, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=1, var_307=1, var_307_arg_0=1, var_307_arg_1=1, var_307_arg_2=1, var_308=1, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=1, var_31=1, var_310=1, var_310_arg_0=1, var_310_arg_1=1, var_310_arg_2=0, var_311=1, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=1, var_313=1, var_313_arg_0=0, var_313_arg_1=14, var_313_arg_2=1, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=1, var_317=255, var_317_arg_0=0, var_317_arg_1=0, var_317_arg_2=255, var_318=255, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=255, var_31_arg_0=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_33=16, var_33_arg_0=1, var_33_arg_1=16, var_33_arg_2=16, var_35=4, var_36=253, var_36_arg_0=253, var_37=0, var_37_arg_0=1, var_37_arg_1=253, var_38=16, var_38_arg_0=0, var_38_arg_1=16, var_38_arg_2=16, var_41=3, var_42=23, var_42_arg_0=23, var_43=0, var_43_arg_0=1, var_43_arg_1=23, var_44=16, var_44_arg_0=0, var_44_arg_1=14, var_44_arg_2=16, var_46=2, var_47=1, var_47_arg_0=1, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=1, var_49_arg_0=1, var_49_arg_1=1, var_49_arg_2=16, var_51=1, var_52=1, var_52_arg_0=1, var_53=1, var_53_arg_0=1, var_53_arg_1=1, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=1, var_56=1, var_56_arg_0=1, var_57=0, var_57_arg_0=1, var_58=1, var_58_arg_0=0, var_58_arg_1=14, var_58_arg_2=1, var_61=1, var_61_arg_0=255, var_62=19, var_62_arg_0=1, var_64=9, var_65=1, var_65_arg_0=1, var_66=0, var_66_arg_0=255, var_66_arg_1=1, var_70=0, var_70_arg_0=1, var_71=0, var_71_arg_0=1, var_71_arg_1=0, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=254, var_75_arg_0=1, var_76=0, var_76_arg_0=27, var_76_arg_1=254, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=1, var_79_arg_0=1, var_80=255, var_80_arg_0=0, var_80_arg_1=1, var_81=0, var_82=1, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=255, var_83=1, var_83_arg_0=1, var_84=0, var_84_arg_0=1, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=1, var_88_arg_1=1, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=0, var_93_arg_1=1, var_94=255, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=255, var_97=0, var_97_arg_0=0, var_98=1, var_98_arg_0=27, var_99=1, var_99_arg_0=0, var_99_arg_1=1] [L87] input_2 = __VERIFIER_nondet_uchar() [L88] input_4 = __VERIFIER_nondet_uint() [L89] input_5 = __VERIFIER_nondet_uchar() [L90] input_6 = __VERIFIER_nondet_uchar() [L91] input_7 = __VERIFIER_nondet_uchar() [L92] input_7 = input_7 & mask_SORT_1 [L93] input_8 = __VERIFIER_nondet_uchar() [L94] input_9 = __VERIFIER_nondet_uint() [L95] input_109 = __VERIFIER_nondet_uchar() [L97] SORT_1 var_93_arg_0 = input_7; [L98] SORT_1 var_93_arg_1 = state_91; [L99] SORT_1 var_93 = var_93_arg_0 == var_93_arg_1; [L100] SORT_1 var_94_arg_0 = var_51; [L101] SORT_1 var_94 = ~var_94_arg_0; [L102] SORT_1 var_95_arg_0 = var_93; [L103] SORT_1 var_95_arg_1 = var_94; [L104] SORT_1 var_95 = var_95_arg_0 | var_95_arg_1; [L105] var_95 = var_95 & mask_SORT_1 [L106] SORT_1 constr_96_arg_0 = var_95; VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=20, input_4=26, input_5=0, input_6=0, input_7=1, input_8=21, input_9=14, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, next_270_arg_1=14, next_273_arg_1=1, next_276_arg_1=23, next_279_arg_1=0, next_282_arg_1=16, next_285_arg_1=16, next_288_arg_1=14, next_291_arg_1=14, next_294_arg_1=1, next_297_arg_1=14, next_303_arg_1=0, next_306_arg_1=1, next_309_arg_1=1, next_312_arg_1=1, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=255, state_10=14, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=14, state_50=1, state_55=14, state_60=0, state_68=1, state_69=1, state_72=1, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=0, var_103_arg_0=19, var_104=1, var_104_arg_0=29, var_105=1, var_105_arg_0=0, var_105_arg_1=1, var_106=2, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=2, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=255, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=255, var_119=2, var_119_arg_0=27, var_119_arg_1=29, var_120=0, var_120_arg_0=2, var_120_arg_1=0, var_137=8, var_137_arg_0=255, var_138=1, var_138_arg_0=8, var_139=255, var_139_arg_0=1, var_14=1, var_140=1, var_140_arg_0=27, var_140_arg_1=255, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=8, var_146_arg_1=1, var_147=0, var_147_arg_0=27, var_147_arg_1=0, var_14_arg_0=1, var_15=8, var_152=8, var_152_arg_0=8, var_153=1, var_153_arg_0=8, var_153_arg_1=8, var_154=1, var_154_arg_0=27, var_154_arg_1=1, var_159=0, var_159_arg_0=0, var_16=0, var_160=0, var_160_arg_0=8, var_160_arg_1=0, var_161=0, var_161_arg_0=27, var_161_arg_1=0, var_166=0, var_166_arg_0=0, var_167=0, var_167_arg_0=8, var_167_arg_1=0, var_168=0, var_168_arg_0=27, var_168_arg_1=0, var_16_arg_0=1, var_16_arg_1=8, var_17=16, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=8, var_174_arg_1=0, var_175=0, var_175_arg_0=27, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=16, var_17_arg_2=16, var_180=0, var_180_arg_0=0, var_181=0, var_181_arg_0=8, var_181_arg_1=0, var_182=0, var_182_arg_0=27, var_182_arg_1=0, var_187=0, var_187_arg_0=0, var_188=0, var_188_arg_0=8, var_188_arg_1=0, var_189=0, var_189_arg_0=27, var_189_arg_1=0, var_194=1, var_194_arg_0=8, var_194_arg_1=8, var_195=1, var_195_arg_0=27, var_195_arg_1=1, var_198=1, var_198_arg_0=1, var_199=2, var_199_arg_0=1, var_199_arg_1=1, var_20=7, var_204=1, var_204_arg_0=1, var_205=0, var_205_arg_0=255, var_205_arg_1=1, var_21=7, var_21_arg_0=7, var_22=0, var_224=0, var_224_arg_0=0, var_224_arg_1=27, var_225=1, var_225_arg_0=1, var_225_arg_1=0, var_228=1, var_228_arg_0=1, var_22_arg_0=1, var_22_arg_1=7, var_23=16, var_233=0, var_233_arg_0=0, var_233_arg_1=1, var_236=1, var_236_arg_0=0, var_236_arg_1=1, var_23_arg_0=0, var_23_arg_1=23, var_23_arg_2=16, var_248=29, var_248_arg_0=27, var_248_arg_1=29, var_249=1, var_249_arg_0=29, var_249_arg_1=0, var_25=6, var_250=1, var_250_arg_0=1, var_250_arg_1=1, var_26=252, var_267=14, var_267_arg_0=1, var_267_arg_1=14, var_267_arg_2=16, var_268=0, var_269=14, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=14, var_26_arg_0=252, var_27=0, var_271=1, var_271_arg_0=0, var_271_arg_1=2, var_271_arg_2=1, var_272=1, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=1, var_274=23, var_274_arg_0=0, var_274_arg_1=14, var_274_arg_2=23, var_275=23, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=23, var_277=0, var_277_arg_0=0, var_277_arg_1=14, var_277_arg_2=0, var_278=0, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=0, var_27_arg_0=1, var_27_arg_1=252, var_28=16, var_280=16, var_280_arg_0=0, var_280_arg_1=14, var_280_arg_2=16, var_281=16, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=16, var_283=16, var_283_arg_0=0, var_283_arg_1=14, var_283_arg_2=16, var_284=16, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=16, var_286=14, var_286_arg_0=0, var_286_arg_1=14, var_286_arg_2=14, var_287=14, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=14, var_289=14, var_289_arg_0=1, var_289_arg_1=14, var_289_arg_2=1, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=16, var_290=14, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=14, var_292=1, var_292_arg_0=0, var_292_arg_1=14, var_292_arg_2=1, var_293=1, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=1, var_295=14, var_295_arg_0=1, var_295_arg_1=14, var_295_arg_2=14, var_296=14, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=14, var_298=1, var_298_arg_0=1, var_299=0, var_299_arg_0=255, var_299_arg_1=1, var_30=5, var_300=1, var_300_arg_0=1, var_301=255, var_301_arg_0=0, var_301_arg_1=1, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=255, var_304=1, var_304_arg_0=1, var_304_arg_1=1, var_304_arg_2=1, var_305=1, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=1, var_307=1, var_307_arg_0=1, var_307_arg_1=1, var_307_arg_2=1, var_308=1, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=1, var_31=1, var_310=1, var_310_arg_0=1, var_310_arg_1=1, var_310_arg_2=0, var_311=1, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=1, var_313=1, var_313_arg_0=0, var_313_arg_1=14, var_313_arg_2=1, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=1, var_317=255, var_317_arg_0=0, var_317_arg_1=0, var_317_arg_2=255, var_318=255, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=255, var_31_arg_0=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_33=16, var_33_arg_0=1, var_33_arg_1=16, var_33_arg_2=16, var_35=4, var_36=253, var_36_arg_0=253, var_37=0, var_37_arg_0=1, var_37_arg_1=253, var_38=16, var_38_arg_0=0, var_38_arg_1=16, var_38_arg_2=16, var_41=3, var_42=23, var_42_arg_0=23, var_43=0, var_43_arg_0=1, var_43_arg_1=23, var_44=16, var_44_arg_0=0, var_44_arg_1=14, var_44_arg_2=16, var_46=2, var_47=1, var_47_arg_0=1, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=1, var_49_arg_0=1, var_49_arg_1=1, var_49_arg_2=16, var_51=1, var_52=1, var_52_arg_0=1, var_53=1, var_53_arg_0=1, var_53_arg_1=1, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=1, var_56=1, var_56_arg_0=1, var_57=0, var_57_arg_0=1, var_58=1, var_58_arg_0=0, var_58_arg_1=14, var_58_arg_2=1, var_61=1, var_61_arg_0=255, var_62=19, var_62_arg_0=1, var_64=9, var_65=1, var_65_arg_0=1, var_66=0, var_66_arg_0=255, var_66_arg_1=1, var_70=0, var_70_arg_0=1, var_71=0, var_71_arg_0=1, var_71_arg_1=0, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=254, var_75_arg_0=1, var_76=0, var_76_arg_0=27, var_76_arg_1=254, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=1, var_79_arg_0=1, var_80=255, var_80_arg_0=0, var_80_arg_1=1, var_81=0, var_82=1, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=255, var_83=1, var_83_arg_0=1, var_84=0, var_84_arg_0=1, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=1, var_88_arg_1=1, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=1, var_93_arg_1=0, var_94=251, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=251, var_97=0, var_97_arg_0=0, var_98=1, var_98_arg_0=27, var_99=1, var_99_arg_0=0, var_99_arg_1=1] [L107] CALL assume_abort_if_not(constr_96_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L107] RET assume_abort_if_not(constr_96_arg_0) VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=20, input_4=26, input_5=0, input_6=0, input_7=1, input_8=21, input_9=14, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, next_270_arg_1=14, next_273_arg_1=1, next_276_arg_1=23, next_279_arg_1=0, next_282_arg_1=16, next_285_arg_1=16, next_288_arg_1=14, next_291_arg_1=14, next_294_arg_1=1, next_297_arg_1=14, next_303_arg_1=0, next_306_arg_1=1, next_309_arg_1=1, next_312_arg_1=1, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=255, state_10=14, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=14, state_50=1, state_55=14, state_60=0, state_68=1, state_69=1, state_72=1, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=1, var_101_arg_1=2, var_103=0, var_103_arg_0=19, var_104=1, var_104_arg_0=29, var_105=1, var_105_arg_0=0, var_105_arg_1=1, var_106=2, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=2, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=255, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=255, var_119=2, var_119_arg_0=27, var_119_arg_1=29, var_120=0, var_120_arg_0=2, var_120_arg_1=0, var_137=8, var_137_arg_0=255, var_138=1, var_138_arg_0=8, var_139=255, var_139_arg_0=1, var_14=1, var_140=1, var_140_arg_0=27, var_140_arg_1=255, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=8, var_146_arg_1=1, var_147=0, var_147_arg_0=27, var_147_arg_1=0, var_14_arg_0=1, var_15=8, var_152=8, var_152_arg_0=8, var_153=1, var_153_arg_0=8, var_153_arg_1=8, var_154=1, var_154_arg_0=27, var_154_arg_1=1, var_159=0, var_159_arg_0=0, var_16=0, var_160=0, var_160_arg_0=8, var_160_arg_1=0, var_161=0, var_161_arg_0=27, var_161_arg_1=0, var_166=0, var_166_arg_0=0, var_167=0, var_167_arg_0=8, var_167_arg_1=0, var_168=0, var_168_arg_0=27, var_168_arg_1=0, var_16_arg_0=1, var_16_arg_1=8, var_17=16, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=8, var_174_arg_1=0, var_175=0, var_175_arg_0=27, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=16, var_17_arg_2=16, var_180=0, var_180_arg_0=0, var_181=0, var_181_arg_0=8, var_181_arg_1=0, var_182=0, var_182_arg_0=27, var_182_arg_1=0, var_187=0, var_187_arg_0=0, var_188=0, var_188_arg_0=8, var_188_arg_1=0, var_189=0, var_189_arg_0=27, var_189_arg_1=0, var_194=1, var_194_arg_0=8, var_194_arg_1=8, var_195=1, var_195_arg_0=27, var_195_arg_1=1, var_198=1, var_198_arg_0=1, var_199=2, var_199_arg_0=1, var_199_arg_1=1, var_20=7, var_204=1, var_204_arg_0=1, var_205=0, var_205_arg_0=255, var_205_arg_1=1, var_21=7, var_21_arg_0=7, var_22=0, var_224=0, var_224_arg_0=0, var_224_arg_1=27, var_225=1, var_225_arg_0=1, var_225_arg_1=0, var_228=1, var_228_arg_0=1, var_22_arg_0=1, var_22_arg_1=7, var_23=16, var_233=0, var_233_arg_0=0, var_233_arg_1=1, var_236=1, var_236_arg_0=0, var_236_arg_1=1, var_23_arg_0=0, var_23_arg_1=23, var_23_arg_2=16, var_248=29, var_248_arg_0=27, var_248_arg_1=29, var_249=1, var_249_arg_0=29, var_249_arg_1=0, var_25=6, var_250=1, var_250_arg_0=1, var_250_arg_1=1, var_26=252, var_267=14, var_267_arg_0=1, var_267_arg_1=14, var_267_arg_2=16, var_268=0, var_269=14, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=14, var_26_arg_0=252, var_27=0, var_271=1, var_271_arg_0=0, var_271_arg_1=2, var_271_arg_2=1, var_272=1, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=1, var_274=23, var_274_arg_0=0, var_274_arg_1=14, var_274_arg_2=23, var_275=23, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=23, var_277=0, var_277_arg_0=0, var_277_arg_1=14, var_277_arg_2=0, var_278=0, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=0, var_27_arg_0=1, var_27_arg_1=252, var_28=16, var_280=16, var_280_arg_0=0, var_280_arg_1=14, var_280_arg_2=16, var_281=16, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=16, var_283=16, var_283_arg_0=0, var_283_arg_1=14, var_283_arg_2=16, var_284=16, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=16, var_286=14, var_286_arg_0=0, var_286_arg_1=14, var_286_arg_2=14, var_287=14, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=14, var_289=14, var_289_arg_0=1, var_289_arg_1=14, var_289_arg_2=1, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=16, var_290=14, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=14, var_292=1, var_292_arg_0=0, var_292_arg_1=14, var_292_arg_2=1, var_293=1, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=1, var_295=14, var_295_arg_0=1, var_295_arg_1=14, var_295_arg_2=14, var_296=14, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=14, var_298=1, var_298_arg_0=1, var_299=0, var_299_arg_0=255, var_299_arg_1=1, var_30=5, var_300=1, var_300_arg_0=1, var_301=255, var_301_arg_0=0, var_301_arg_1=1, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=255, var_304=1, var_304_arg_0=1, var_304_arg_1=1, var_304_arg_2=1, var_305=1, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=1, var_307=1, var_307_arg_0=1, var_307_arg_1=1, var_307_arg_2=1, var_308=1, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=1, var_31=1, var_310=1, var_310_arg_0=1, var_310_arg_1=1, var_310_arg_2=0, var_311=1, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=1, var_313=1, var_313_arg_0=0, var_313_arg_1=14, var_313_arg_2=1, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=1, var_317=255, var_317_arg_0=0, var_317_arg_1=0, var_317_arg_2=255, var_318=255, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=255, var_31_arg_0=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_33=16, var_33_arg_0=1, var_33_arg_1=16, var_33_arg_2=16, var_35=4, var_36=253, var_36_arg_0=253, var_37=0, var_37_arg_0=1, var_37_arg_1=253, var_38=16, var_38_arg_0=0, var_38_arg_1=16, var_38_arg_2=16, var_41=3, var_42=23, var_42_arg_0=23, var_43=0, var_43_arg_0=1, var_43_arg_1=23, var_44=16, var_44_arg_0=0, var_44_arg_1=14, var_44_arg_2=16, var_46=2, var_47=1, var_47_arg_0=1, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=1, var_49_arg_0=1, var_49_arg_1=1, var_49_arg_2=16, var_51=1, var_52=1, var_52_arg_0=1, var_53=1, var_53_arg_0=1, var_53_arg_1=1, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=1, var_56=1, var_56_arg_0=1, var_57=0, var_57_arg_0=1, var_58=1, var_58_arg_0=0, var_58_arg_1=14, var_58_arg_2=1, var_61=1, var_61_arg_0=255, var_62=19, var_62_arg_0=1, var_64=9, var_65=1, var_65_arg_0=1, var_66=0, var_66_arg_0=255, var_66_arg_1=1, var_70=0, var_70_arg_0=1, var_71=0, var_71_arg_0=1, var_71_arg_1=0, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=254, var_75_arg_0=1, var_76=0, var_76_arg_0=27, var_76_arg_1=254, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=1, var_79_arg_0=1, var_80=255, var_80_arg_0=0, var_80_arg_1=1, var_81=0, var_82=1, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=255, var_83=1, var_83_arg_0=1, var_84=0, var_84_arg_0=1, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=1, var_88_arg_1=1, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=1, var_93_arg_1=0, var_94=251, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=251, var_97=0, var_97_arg_0=0, var_98=1, var_98_arg_0=27, var_99=1, var_99_arg_0=0, var_99_arg_1=1] [L108] SORT_13 var_65_arg_0 = var_64; [L109] var_65_arg_0 = var_65_arg_0 & mask_SORT_13 [L110] SORT_11 var_65 = var_65_arg_0; [L111] SORT_11 var_66_arg_0 = state_60; [L112] SORT_11 var_66_arg_1 = var_65; [L113] SORT_1 var_66 = var_66_arg_0 == var_66_arg_1; [L114] SORT_1 var_97_arg_0 = var_66; [L115] SORT_1 var_97 = ~var_97_arg_0; [L116] SORT_1 var_98_arg_0 = input_6; [L117] SORT_1 var_98 = ~var_98_arg_0; [L118] SORT_1 var_99_arg_0 = var_97; [L119] SORT_1 var_99_arg_1 = var_98; [L120] SORT_1 var_99 = var_99_arg_0 | var_99_arg_1; [L121] SORT_1 var_100_arg_0 = var_51; [L122] SORT_1 var_100 = ~var_100_arg_0; [L123] SORT_1 var_101_arg_0 = var_99; [L124] SORT_1 var_101_arg_1 = var_100; [L125] SORT_1 var_101 = var_101_arg_0 | var_101_arg_1; [L126] var_101 = var_101 & mask_SORT_1 [L127] SORT_1 constr_102_arg_0 = var_101; VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=20, input_4=26, input_5=0, input_6=0, input_7=1, input_8=21, input_9=14, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, next_270_arg_1=14, next_273_arg_1=1, next_276_arg_1=23, next_279_arg_1=0, next_282_arg_1=16, next_285_arg_1=16, next_288_arg_1=14, next_291_arg_1=14, next_294_arg_1=1, next_297_arg_1=14, next_303_arg_1=0, next_306_arg_1=1, next_309_arg_1=1, next_312_arg_1=1, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=255, state_10=14, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=14, state_50=1, state_55=14, state_60=0, state_68=1, state_69=1, state_72=1, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=0, var_101_arg_1=2, var_103=0, var_103_arg_0=19, var_104=1, var_104_arg_0=29, var_105=1, var_105_arg_0=0, var_105_arg_1=1, var_106=2, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=2, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=255, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=255, var_119=2, var_119_arg_0=27, var_119_arg_1=29, var_120=0, var_120_arg_0=2, var_120_arg_1=0, var_137=8, var_137_arg_0=255, var_138=1, var_138_arg_0=8, var_139=255, var_139_arg_0=1, var_14=1, var_140=1, var_140_arg_0=27, var_140_arg_1=255, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=8, var_146_arg_1=1, var_147=0, var_147_arg_0=27, var_147_arg_1=0, var_14_arg_0=1, var_15=8, var_152=8, var_152_arg_0=8, var_153=1, var_153_arg_0=8, var_153_arg_1=8, var_154=1, var_154_arg_0=27, var_154_arg_1=1, var_159=0, var_159_arg_0=0, var_16=0, var_160=0, var_160_arg_0=8, var_160_arg_1=0, var_161=0, var_161_arg_0=27, var_161_arg_1=0, var_166=0, var_166_arg_0=0, var_167=0, var_167_arg_0=8, var_167_arg_1=0, var_168=0, var_168_arg_0=27, var_168_arg_1=0, var_16_arg_0=1, var_16_arg_1=8, var_17=16, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=8, var_174_arg_1=0, var_175=0, var_175_arg_0=27, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=16, var_17_arg_2=16, var_180=0, var_180_arg_0=0, var_181=0, var_181_arg_0=8, var_181_arg_1=0, var_182=0, var_182_arg_0=27, var_182_arg_1=0, var_187=0, var_187_arg_0=0, var_188=0, var_188_arg_0=8, var_188_arg_1=0, var_189=0, var_189_arg_0=27, var_189_arg_1=0, var_194=1, var_194_arg_0=8, var_194_arg_1=8, var_195=1, var_195_arg_0=27, var_195_arg_1=1, var_198=1, var_198_arg_0=1, var_199=2, var_199_arg_0=1, var_199_arg_1=1, var_20=7, var_204=1, var_204_arg_0=1, var_205=0, var_205_arg_0=255, var_205_arg_1=1, var_21=7, var_21_arg_0=7, var_22=0, var_224=0, var_224_arg_0=0, var_224_arg_1=27, var_225=1, var_225_arg_0=1, var_225_arg_1=0, var_228=1, var_228_arg_0=1, var_22_arg_0=1, var_22_arg_1=7, var_23=16, var_233=0, var_233_arg_0=0, var_233_arg_1=1, var_236=1, var_236_arg_0=0, var_236_arg_1=1, var_23_arg_0=0, var_23_arg_1=23, var_23_arg_2=16, var_248=29, var_248_arg_0=27, var_248_arg_1=29, var_249=1, var_249_arg_0=29, var_249_arg_1=0, var_25=6, var_250=1, var_250_arg_0=1, var_250_arg_1=1, var_26=252, var_267=14, var_267_arg_0=1, var_267_arg_1=14, var_267_arg_2=16, var_268=0, var_269=14, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=14, var_26_arg_0=252, var_27=0, var_271=1, var_271_arg_0=0, var_271_arg_1=2, var_271_arg_2=1, var_272=1, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=1, var_274=23, var_274_arg_0=0, var_274_arg_1=14, var_274_arg_2=23, var_275=23, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=23, var_277=0, var_277_arg_0=0, var_277_arg_1=14, var_277_arg_2=0, var_278=0, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=0, var_27_arg_0=1, var_27_arg_1=252, var_28=16, var_280=16, var_280_arg_0=0, var_280_arg_1=14, var_280_arg_2=16, var_281=16, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=16, var_283=16, var_283_arg_0=0, var_283_arg_1=14, var_283_arg_2=16, var_284=16, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=16, var_286=14, var_286_arg_0=0, var_286_arg_1=14, var_286_arg_2=14, var_287=14, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=14, var_289=14, var_289_arg_0=1, var_289_arg_1=14, var_289_arg_2=1, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=16, var_290=14, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=14, var_292=1, var_292_arg_0=0, var_292_arg_1=14, var_292_arg_2=1, var_293=1, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=1, var_295=14, var_295_arg_0=1, var_295_arg_1=14, var_295_arg_2=14, var_296=14, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=14, var_298=1, var_298_arg_0=1, var_299=0, var_299_arg_0=255, var_299_arg_1=1, var_30=5, var_300=1, var_300_arg_0=1, var_301=255, var_301_arg_0=0, var_301_arg_1=1, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=255, var_304=1, var_304_arg_0=1, var_304_arg_1=1, var_304_arg_2=1, var_305=1, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=1, var_307=1, var_307_arg_0=1, var_307_arg_1=1, var_307_arg_2=1, var_308=1, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=1, var_31=1, var_310=1, var_310_arg_0=1, var_310_arg_1=1, var_310_arg_2=0, var_311=1, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=1, var_313=1, var_313_arg_0=0, var_313_arg_1=14, var_313_arg_2=1, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=1, var_317=255, var_317_arg_0=0, var_317_arg_1=0, var_317_arg_2=255, var_318=255, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=255, var_31_arg_0=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_33=16, var_33_arg_0=1, var_33_arg_1=16, var_33_arg_2=16, var_35=4, var_36=253, var_36_arg_0=253, var_37=0, var_37_arg_0=1, var_37_arg_1=253, var_38=16, var_38_arg_0=0, var_38_arg_1=16, var_38_arg_2=16, var_41=3, var_42=23, var_42_arg_0=23, var_43=0, var_43_arg_0=1, var_43_arg_1=23, var_44=16, var_44_arg_0=0, var_44_arg_1=14, var_44_arg_2=16, var_46=2, var_47=1, var_47_arg_0=1, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=1, var_49_arg_0=1, var_49_arg_1=1, var_49_arg_2=16, var_51=1, var_52=1, var_52_arg_0=1, var_53=1, var_53_arg_0=1, var_53_arg_1=1, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=1, var_56=1, var_56_arg_0=1, var_57=0, var_57_arg_0=1, var_58=1, var_58_arg_0=0, var_58_arg_1=14, var_58_arg_2=1, var_61=1, var_61_arg_0=255, var_62=19, var_62_arg_0=1, var_64=9, var_65=0, var_65_arg_0=0, var_66=1, var_66_arg_0=0, var_66_arg_1=0, var_70=0, var_70_arg_0=1, var_71=0, var_71_arg_0=1, var_71_arg_1=0, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=254, var_75_arg_0=1, var_76=0, var_76_arg_0=27, var_76_arg_1=254, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=1, var_79_arg_0=1, var_80=255, var_80_arg_0=0, var_80_arg_1=1, var_81=0, var_82=1, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=255, var_83=1, var_83_arg_0=1, var_84=0, var_84_arg_0=1, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=1, var_88_arg_1=1, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=1, var_93_arg_1=0, var_94=251, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=251, var_97=0, var_97_arg_0=1, var_98=10, var_98_arg_0=0, var_99=0, var_99_arg_0=0, var_99_arg_1=10] [L128] CALL assume_abort_if_not(constr_102_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L128] RET assume_abort_if_not(constr_102_arg_0) VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=20, input_4=26, input_5=0, input_6=0, input_7=1, input_8=21, input_9=14, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, next_270_arg_1=14, next_273_arg_1=1, next_276_arg_1=23, next_279_arg_1=0, next_282_arg_1=16, next_285_arg_1=16, next_288_arg_1=14, next_291_arg_1=14, next_294_arg_1=1, next_297_arg_1=14, next_303_arg_1=0, next_306_arg_1=1, next_309_arg_1=1, next_312_arg_1=1, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=255, state_10=14, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=14, state_50=1, state_55=14, state_60=0, state_68=1, state_69=1, state_72=1, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=0, var_101_arg_1=2, var_103=0, var_103_arg_0=19, var_104=1, var_104_arg_0=29, var_105=1, var_105_arg_0=0, var_105_arg_1=1, var_106=2, var_106_arg_0=1, var_107=1, var_107_arg_0=1, var_107_arg_1=2, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=255, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=255, var_119=2, var_119_arg_0=27, var_119_arg_1=29, var_120=0, var_120_arg_0=2, var_120_arg_1=0, var_137=8, var_137_arg_0=255, var_138=1, var_138_arg_0=8, var_139=255, var_139_arg_0=1, var_14=1, var_140=1, var_140_arg_0=27, var_140_arg_1=255, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=8, var_146_arg_1=1, var_147=0, var_147_arg_0=27, var_147_arg_1=0, var_14_arg_0=1, var_15=8, var_152=8, var_152_arg_0=8, var_153=1, var_153_arg_0=8, var_153_arg_1=8, var_154=1, var_154_arg_0=27, var_154_arg_1=1, var_159=0, var_159_arg_0=0, var_16=0, var_160=0, var_160_arg_0=8, var_160_arg_1=0, var_161=0, var_161_arg_0=27, var_161_arg_1=0, var_166=0, var_166_arg_0=0, var_167=0, var_167_arg_0=8, var_167_arg_1=0, var_168=0, var_168_arg_0=27, var_168_arg_1=0, var_16_arg_0=1, var_16_arg_1=8, var_17=16, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=8, var_174_arg_1=0, var_175=0, var_175_arg_0=27, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=16, var_17_arg_2=16, var_180=0, var_180_arg_0=0, var_181=0, var_181_arg_0=8, var_181_arg_1=0, var_182=0, var_182_arg_0=27, var_182_arg_1=0, var_187=0, var_187_arg_0=0, var_188=0, var_188_arg_0=8, var_188_arg_1=0, var_189=0, var_189_arg_0=27, var_189_arg_1=0, var_194=1, var_194_arg_0=8, var_194_arg_1=8, var_195=1, var_195_arg_0=27, var_195_arg_1=1, var_198=1, var_198_arg_0=1, var_199=2, var_199_arg_0=1, var_199_arg_1=1, var_20=7, var_204=1, var_204_arg_0=1, var_205=0, var_205_arg_0=255, var_205_arg_1=1, var_21=7, var_21_arg_0=7, var_22=0, var_224=0, var_224_arg_0=0, var_224_arg_1=27, var_225=1, var_225_arg_0=1, var_225_arg_1=0, var_228=1, var_228_arg_0=1, var_22_arg_0=1, var_22_arg_1=7, var_23=16, var_233=0, var_233_arg_0=0, var_233_arg_1=1, var_236=1, var_236_arg_0=0, var_236_arg_1=1, var_23_arg_0=0, var_23_arg_1=23, var_23_arg_2=16, var_248=29, var_248_arg_0=27, var_248_arg_1=29, var_249=1, var_249_arg_0=29, var_249_arg_1=0, var_25=6, var_250=1, var_250_arg_0=1, var_250_arg_1=1, var_26=252, var_267=14, var_267_arg_0=1, var_267_arg_1=14, var_267_arg_2=16, var_268=0, var_269=14, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=14, var_26_arg_0=252, var_27=0, var_271=1, var_271_arg_0=0, var_271_arg_1=2, var_271_arg_2=1, var_272=1, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=1, var_274=23, var_274_arg_0=0, var_274_arg_1=14, var_274_arg_2=23, var_275=23, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=23, var_277=0, var_277_arg_0=0, var_277_arg_1=14, var_277_arg_2=0, var_278=0, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=0, var_27_arg_0=1, var_27_arg_1=252, var_28=16, var_280=16, var_280_arg_0=0, var_280_arg_1=14, var_280_arg_2=16, var_281=16, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=16, var_283=16, var_283_arg_0=0, var_283_arg_1=14, var_283_arg_2=16, var_284=16, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=16, var_286=14, var_286_arg_0=0, var_286_arg_1=14, var_286_arg_2=14, var_287=14, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=14, var_289=14, var_289_arg_0=1, var_289_arg_1=14, var_289_arg_2=1, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=16, var_290=14, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=14, var_292=1, var_292_arg_0=0, var_292_arg_1=14, var_292_arg_2=1, var_293=1, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=1, var_295=14, var_295_arg_0=1, var_295_arg_1=14, var_295_arg_2=14, var_296=14, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=14, var_298=1, var_298_arg_0=1, var_299=0, var_299_arg_0=255, var_299_arg_1=1, var_30=5, var_300=1, var_300_arg_0=1, var_301=255, var_301_arg_0=0, var_301_arg_1=1, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=255, var_304=1, var_304_arg_0=1, var_304_arg_1=1, var_304_arg_2=1, var_305=1, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=1, var_307=1, var_307_arg_0=1, var_307_arg_1=1, var_307_arg_2=1, var_308=1, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=1, var_31=1, var_310=1, var_310_arg_0=1, var_310_arg_1=1, var_310_arg_2=0, var_311=1, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=1, var_313=1, var_313_arg_0=0, var_313_arg_1=14, var_313_arg_2=1, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=1, var_317=255, var_317_arg_0=0, var_317_arg_1=0, var_317_arg_2=255, var_318=255, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=255, var_31_arg_0=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_33=16, var_33_arg_0=1, var_33_arg_1=16, var_33_arg_2=16, var_35=4, var_36=253, var_36_arg_0=253, var_37=0, var_37_arg_0=1, var_37_arg_1=253, var_38=16, var_38_arg_0=0, var_38_arg_1=16, var_38_arg_2=16, var_41=3, var_42=23, var_42_arg_0=23, var_43=0, var_43_arg_0=1, var_43_arg_1=23, var_44=16, var_44_arg_0=0, var_44_arg_1=14, var_44_arg_2=16, var_46=2, var_47=1, var_47_arg_0=1, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=1, var_49_arg_0=1, var_49_arg_1=1, var_49_arg_2=16, var_51=1, var_52=1, var_52_arg_0=1, var_53=1, var_53_arg_0=1, var_53_arg_1=1, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=1, var_56=1, var_56_arg_0=1, var_57=0, var_57_arg_0=1, var_58=1, var_58_arg_0=0, var_58_arg_1=14, var_58_arg_2=1, var_61=1, var_61_arg_0=255, var_62=19, var_62_arg_0=1, var_64=9, var_65=0, var_65_arg_0=0, var_66=1, var_66_arg_0=0, var_66_arg_1=0, var_70=0, var_70_arg_0=1, var_71=0, var_71_arg_0=1, var_71_arg_1=0, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=254, var_75_arg_0=1, var_76=0, var_76_arg_0=27, var_76_arg_1=254, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=1, var_79_arg_0=1, var_80=255, var_80_arg_0=0, var_80_arg_1=1, var_81=0, var_82=1, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=255, var_83=1, var_83_arg_0=1, var_84=0, var_84_arg_0=1, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=1, var_88_arg_1=1, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=1, var_93_arg_1=0, var_94=251, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=251, var_97=0, var_97_arg_0=1, var_98=10, var_98_arg_0=0, var_99=0, var_99_arg_0=0, var_99_arg_1=10] [L129] SORT_11 var_61_arg_0 = state_60; [L130] SORT_1 var_61 = var_61_arg_0 != 0; [L131] SORT_1 var_62_arg_0 = var_61; [L132] SORT_1 var_62 = ~var_62_arg_0; [L133] SORT_1 var_103_arg_0 = var_62; [L134] SORT_1 var_103 = ~var_103_arg_0; [L135] SORT_1 var_104_arg_0 = input_5; [L136] SORT_1 var_104 = ~var_104_arg_0; [L137] SORT_1 var_105_arg_0 = var_103; [L138] SORT_1 var_105_arg_1 = var_104; [L139] SORT_1 var_105 = var_105_arg_0 | var_105_arg_1; [L140] SORT_1 var_106_arg_0 = var_51; [L141] SORT_1 var_106 = ~var_106_arg_0; [L142] SORT_1 var_107_arg_0 = var_105; [L143] SORT_1 var_107_arg_1 = var_106; [L144] SORT_1 var_107 = var_107_arg_0 | var_107_arg_1; [L145] var_107 = var_107 & mask_SORT_1 [L146] SORT_1 constr_108_arg_0 = var_107; VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=20, input_4=26, input_5=0, input_6=0, input_7=1, input_8=21, input_9=14, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, next_270_arg_1=14, next_273_arg_1=1, next_276_arg_1=23, next_279_arg_1=0, next_282_arg_1=16, next_285_arg_1=16, next_288_arg_1=14, next_291_arg_1=14, next_294_arg_1=1, next_297_arg_1=14, next_303_arg_1=0, next_306_arg_1=1, next_309_arg_1=1, next_312_arg_1=1, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=255, state_10=14, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=14, state_50=1, state_55=14, state_60=0, state_68=1, state_69=1, state_72=1, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=0, var_101_arg_1=2, var_103=12, var_103_arg_0=25, var_104=1, var_104_arg_0=0, var_105=0, var_105_arg_0=12, var_105_arg_1=1, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=255, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=255, var_119=2, var_119_arg_0=27, var_119_arg_1=29, var_120=0, var_120_arg_0=2, var_120_arg_1=0, var_137=8, var_137_arg_0=255, var_138=1, var_138_arg_0=8, var_139=255, var_139_arg_0=1, var_14=1, var_140=1, var_140_arg_0=27, var_140_arg_1=255, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=8, var_146_arg_1=1, var_147=0, var_147_arg_0=27, var_147_arg_1=0, var_14_arg_0=1, var_15=8, var_152=8, var_152_arg_0=8, var_153=1, var_153_arg_0=8, var_153_arg_1=8, var_154=1, var_154_arg_0=27, var_154_arg_1=1, var_159=0, var_159_arg_0=0, var_16=0, var_160=0, var_160_arg_0=8, var_160_arg_1=0, var_161=0, var_161_arg_0=27, var_161_arg_1=0, var_166=0, var_166_arg_0=0, var_167=0, var_167_arg_0=8, var_167_arg_1=0, var_168=0, var_168_arg_0=27, var_168_arg_1=0, var_16_arg_0=1, var_16_arg_1=8, var_17=16, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=8, var_174_arg_1=0, var_175=0, var_175_arg_0=27, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=16, var_17_arg_2=16, var_180=0, var_180_arg_0=0, var_181=0, var_181_arg_0=8, var_181_arg_1=0, var_182=0, var_182_arg_0=27, var_182_arg_1=0, var_187=0, var_187_arg_0=0, var_188=0, var_188_arg_0=8, var_188_arg_1=0, var_189=0, var_189_arg_0=27, var_189_arg_1=0, var_194=1, var_194_arg_0=8, var_194_arg_1=8, var_195=1, var_195_arg_0=27, var_195_arg_1=1, var_198=1, var_198_arg_0=1, var_199=2, var_199_arg_0=1, var_199_arg_1=1, var_20=7, var_204=1, var_204_arg_0=1, var_205=0, var_205_arg_0=255, var_205_arg_1=1, var_21=7, var_21_arg_0=7, var_22=0, var_224=0, var_224_arg_0=0, var_224_arg_1=27, var_225=1, var_225_arg_0=1, var_225_arg_1=0, var_228=1, var_228_arg_0=1, var_22_arg_0=1, var_22_arg_1=7, var_23=16, var_233=0, var_233_arg_0=0, var_233_arg_1=1, var_236=1, var_236_arg_0=0, var_236_arg_1=1, var_23_arg_0=0, var_23_arg_1=23, var_23_arg_2=16, var_248=29, var_248_arg_0=27, var_248_arg_1=29, var_249=1, var_249_arg_0=29, var_249_arg_1=0, var_25=6, var_250=1, var_250_arg_0=1, var_250_arg_1=1, var_26=252, var_267=14, var_267_arg_0=1, var_267_arg_1=14, var_267_arg_2=16, var_268=0, var_269=14, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=14, var_26_arg_0=252, var_27=0, var_271=1, var_271_arg_0=0, var_271_arg_1=2, var_271_arg_2=1, var_272=1, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=1, var_274=23, var_274_arg_0=0, var_274_arg_1=14, var_274_arg_2=23, var_275=23, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=23, var_277=0, var_277_arg_0=0, var_277_arg_1=14, var_277_arg_2=0, var_278=0, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=0, var_27_arg_0=1, var_27_arg_1=252, var_28=16, var_280=16, var_280_arg_0=0, var_280_arg_1=14, var_280_arg_2=16, var_281=16, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=16, var_283=16, var_283_arg_0=0, var_283_arg_1=14, var_283_arg_2=16, var_284=16, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=16, var_286=14, var_286_arg_0=0, var_286_arg_1=14, var_286_arg_2=14, var_287=14, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=14, var_289=14, var_289_arg_0=1, var_289_arg_1=14, var_289_arg_2=1, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=16, var_290=14, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=14, var_292=1, var_292_arg_0=0, var_292_arg_1=14, var_292_arg_2=1, var_293=1, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=1, var_295=14, var_295_arg_0=1, var_295_arg_1=14, var_295_arg_2=14, var_296=14, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=14, var_298=1, var_298_arg_0=1, var_299=0, var_299_arg_0=255, var_299_arg_1=1, var_30=5, var_300=1, var_300_arg_0=1, var_301=255, var_301_arg_0=0, var_301_arg_1=1, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=255, var_304=1, var_304_arg_0=1, var_304_arg_1=1, var_304_arg_2=1, var_305=1, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=1, var_307=1, var_307_arg_0=1, var_307_arg_1=1, var_307_arg_2=1, var_308=1, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=1, var_31=1, var_310=1, var_310_arg_0=1, var_310_arg_1=1, var_310_arg_2=0, var_311=1, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=1, var_313=1, var_313_arg_0=0, var_313_arg_1=14, var_313_arg_2=1, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=1, var_317=255, var_317_arg_0=0, var_317_arg_1=0, var_317_arg_2=255, var_318=255, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=255, var_31_arg_0=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_33=16, var_33_arg_0=1, var_33_arg_1=16, var_33_arg_2=16, var_35=4, var_36=253, var_36_arg_0=253, var_37=0, var_37_arg_0=1, var_37_arg_1=253, var_38=16, var_38_arg_0=0, var_38_arg_1=16, var_38_arg_2=16, var_41=3, var_42=23, var_42_arg_0=23, var_43=0, var_43_arg_0=1, var_43_arg_1=23, var_44=16, var_44_arg_0=0, var_44_arg_1=14, var_44_arg_2=16, var_46=2, var_47=1, var_47_arg_0=1, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=1, var_49_arg_0=1, var_49_arg_1=1, var_49_arg_2=16, var_51=1, var_52=1, var_52_arg_0=1, var_53=1, var_53_arg_0=1, var_53_arg_1=1, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=1, var_56=1, var_56_arg_0=1, var_57=0, var_57_arg_0=1, var_58=1, var_58_arg_0=0, var_58_arg_1=14, var_58_arg_2=1, var_61=0, var_61_arg_0=0, var_62=25, var_62_arg_0=0, var_64=9, var_65=0, var_65_arg_0=0, var_66=1, var_66_arg_0=0, var_66_arg_1=0, var_70=0, var_70_arg_0=1, var_71=0, var_71_arg_0=1, var_71_arg_1=0, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=254, var_75_arg_0=1, var_76=0, var_76_arg_0=27, var_76_arg_1=254, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=1, var_79_arg_0=1, var_80=255, var_80_arg_0=0, var_80_arg_1=1, var_81=0, var_82=1, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=255, var_83=1, var_83_arg_0=1, var_84=0, var_84_arg_0=1, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=1, var_88_arg_1=1, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=1, var_93_arg_1=0, var_94=251, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=251, var_97=0, var_97_arg_0=1, var_98=10, var_98_arg_0=0, var_99=0, var_99_arg_0=0, var_99_arg_1=10] [L147] CALL assume_abort_if_not(constr_108_arg_0) VAL [\old(cond)=1] [L21] COND FALSE !(!cond) [L147] RET assume_abort_if_not(constr_108_arg_0) VAL [bad_115_arg_0=0, constr_102_arg_0=1, constr_108_arg_0=1, constr_96_arg_0=1, init_92_arg_1=1, input_109=1, input_2=20, input_4=26, input_5=0, input_6=0, input_7=1, input_8=21, input_9=14, mask_SORT_1=1, mask_SORT_11=31, mask_SORT_13=15, mask_SORT_19=7, mask_SORT_3=4294967295, mask_SORT_40=3, msb_SORT_1=1, msb_SORT_11=16, msb_SORT_13=8, msb_SORT_19=4, msb_SORT_3=2147483648, msb_SORT_40=2, next_270_arg_1=14, next_273_arg_1=1, next_276_arg_1=23, next_279_arg_1=0, next_282_arg_1=16, next_285_arg_1=16, next_288_arg_1=14, next_291_arg_1=14, next_294_arg_1=1, next_297_arg_1=14, next_303_arg_1=0, next_306_arg_1=1, next_309_arg_1=1, next_312_arg_1=1, next_315_arg_1=0, next_316_arg_1=0, next_319_arg_1=255, state_10=14, state_12=1, state_136=255, state_18=23, state_24=0, state_29=16, state_34=16, state_39=14, state_45=14, state_50=1, state_55=14, state_60=0, state_68=1, state_69=1, state_72=1, state_87=0, state_91=0, var_100=2, var_100_arg_0=1, var_101=1, var_101_arg_0=0, var_101_arg_1=2, var_103=12, var_103_arg_0=25, var_104=1, var_104_arg_0=0, var_105=0, var_105_arg_0=12, var_105_arg_1=1, var_106=1, var_106_arg_0=1, var_107=1, var_107_arg_0=0, var_107_arg_1=1, var_110=1, var_110_arg_0=1, var_110_arg_1=1, var_110_arg_2=1, var_111=0, var_112=0, var_112_arg_0=1, var_112_arg_1=0, var_112_arg_2=1, var_113=255, var_113_arg_0=1, var_114=0, var_114_arg_0=0, var_114_arg_1=255, var_119=2, var_119_arg_0=27, var_119_arg_1=29, var_120=0, var_120_arg_0=2, var_120_arg_1=0, var_137=8, var_137_arg_0=255, var_138=1, var_138_arg_0=8, var_139=255, var_139_arg_0=1, var_14=1, var_140=1, var_140_arg_0=27, var_140_arg_1=255, var_145=1, var_145_arg_0=1, var_146=0, var_146_arg_0=8, var_146_arg_1=1, var_147=0, var_147_arg_0=27, var_147_arg_1=0, var_14_arg_0=1, var_15=8, var_152=8, var_152_arg_0=8, var_153=1, var_153_arg_0=8, var_153_arg_1=8, var_154=1, var_154_arg_0=27, var_154_arg_1=1, var_159=0, var_159_arg_0=0, var_16=0, var_160=0, var_160_arg_0=8, var_160_arg_1=0, var_161=0, var_161_arg_0=27, var_161_arg_1=0, var_166=0, var_166_arg_0=0, var_167=0, var_167_arg_0=8, var_167_arg_1=0, var_168=0, var_168_arg_0=27, var_168_arg_1=0, var_16_arg_0=1, var_16_arg_1=8, var_17=16, var_173=0, var_173_arg_0=0, var_174=0, var_174_arg_0=8, var_174_arg_1=0, var_175=0, var_175_arg_0=27, var_175_arg_1=0, var_17_arg_0=0, var_17_arg_1=16, var_17_arg_2=16, var_180=0, var_180_arg_0=0, var_181=0, var_181_arg_0=8, var_181_arg_1=0, var_182=0, var_182_arg_0=27, var_182_arg_1=0, var_187=0, var_187_arg_0=0, var_188=0, var_188_arg_0=8, var_188_arg_1=0, var_189=0, var_189_arg_0=27, var_189_arg_1=0, var_194=1, var_194_arg_0=8, var_194_arg_1=8, var_195=1, var_195_arg_0=27, var_195_arg_1=1, var_198=1, var_198_arg_0=1, var_199=2, var_199_arg_0=1, var_199_arg_1=1, var_20=7, var_204=1, var_204_arg_0=1, var_205=0, var_205_arg_0=255, var_205_arg_1=1, var_21=7, var_21_arg_0=7, var_22=0, var_224=0, var_224_arg_0=0, var_224_arg_1=27, var_225=1, var_225_arg_0=1, var_225_arg_1=0, var_228=1, var_228_arg_0=1, var_22_arg_0=1, var_22_arg_1=7, var_23=16, var_233=0, var_233_arg_0=0, var_233_arg_1=1, var_236=1, var_236_arg_0=0, var_236_arg_1=1, var_23_arg_0=0, var_23_arg_1=23, var_23_arg_2=16, var_248=29, var_248_arg_0=27, var_248_arg_1=29, var_249=1, var_249_arg_0=29, var_249_arg_1=0, var_25=6, var_250=1, var_250_arg_0=1, var_250_arg_1=1, var_26=252, var_267=14, var_267_arg_0=1, var_267_arg_1=14, var_267_arg_2=16, var_268=0, var_269=14, var_269_arg_0=0, var_269_arg_1=0, var_269_arg_2=14, var_26_arg_0=252, var_27=0, var_271=1, var_271_arg_0=0, var_271_arg_1=2, var_271_arg_2=1, var_272=1, var_272_arg_0=0, var_272_arg_1=0, var_272_arg_2=1, var_274=23, var_274_arg_0=0, var_274_arg_1=14, var_274_arg_2=23, var_275=23, var_275_arg_0=0, var_275_arg_1=0, var_275_arg_2=23, var_277=0, var_277_arg_0=0, var_277_arg_1=14, var_277_arg_2=0, var_278=0, var_278_arg_0=0, var_278_arg_1=0, var_278_arg_2=0, var_27_arg_0=1, var_27_arg_1=252, var_28=16, var_280=16, var_280_arg_0=0, var_280_arg_1=14, var_280_arg_2=16, var_281=16, var_281_arg_0=0, var_281_arg_1=0, var_281_arg_2=16, var_283=16, var_283_arg_0=0, var_283_arg_1=14, var_283_arg_2=16, var_284=16, var_284_arg_0=0, var_284_arg_1=0, var_284_arg_2=16, var_286=14, var_286_arg_0=0, var_286_arg_1=14, var_286_arg_2=14, var_287=14, var_287_arg_0=0, var_287_arg_1=0, var_287_arg_2=14, var_289=14, var_289_arg_0=1, var_289_arg_1=14, var_289_arg_2=1, var_28_arg_0=0, var_28_arg_1=0, var_28_arg_2=16, var_290=14, var_290_arg_0=0, var_290_arg_1=0, var_290_arg_2=14, var_292=1, var_292_arg_0=0, var_292_arg_1=14, var_292_arg_2=1, var_293=1, var_293_arg_0=0, var_293_arg_1=0, var_293_arg_2=1, var_295=14, var_295_arg_0=1, var_295_arg_1=14, var_295_arg_2=14, var_296=14, var_296_arg_0=0, var_296_arg_1=0, var_296_arg_2=14, var_298=1, var_298_arg_0=1, var_299=0, var_299_arg_0=255, var_299_arg_1=1, var_30=5, var_300=1, var_300_arg_0=1, var_301=255, var_301_arg_0=0, var_301_arg_1=1, var_302=0, var_302_arg_0=0, var_302_arg_1=0, var_302_arg_2=255, var_304=1, var_304_arg_0=1, var_304_arg_1=1, var_304_arg_2=1, var_305=1, var_305_arg_0=0, var_305_arg_1=0, var_305_arg_2=1, var_307=1, var_307_arg_0=1, var_307_arg_1=1, var_307_arg_2=1, var_308=1, var_308_arg_0=0, var_308_arg_1=0, var_308_arg_2=1, var_31=1, var_310=1, var_310_arg_0=1, var_310_arg_1=1, var_310_arg_2=0, var_311=1, var_311_arg_0=0, var_311_arg_1=0, var_311_arg_2=1, var_313=1, var_313_arg_0=0, var_313_arg_1=14, var_313_arg_2=1, var_314=0, var_314_arg_0=0, var_314_arg_1=0, var_314_arg_2=1, var_317=255, var_317_arg_0=0, var_317_arg_1=0, var_317_arg_2=255, var_318=255, var_318_arg_0=0, var_318_arg_1=0, var_318_arg_2=255, var_31_arg_0=1, var_32=1, var_32_arg_0=1, var_32_arg_1=1, var_33=16, var_33_arg_0=1, var_33_arg_1=16, var_33_arg_2=16, var_35=4, var_36=253, var_36_arg_0=253, var_37=0, var_37_arg_0=1, var_37_arg_1=253, var_38=16, var_38_arg_0=0, var_38_arg_1=16, var_38_arg_2=16, var_41=3, var_42=23, var_42_arg_0=23, var_43=0, var_43_arg_0=1, var_43_arg_1=23, var_44=16, var_44_arg_0=0, var_44_arg_1=14, var_44_arg_2=16, var_46=2, var_47=1, var_47_arg_0=1, var_48=1, var_48_arg_0=1, var_48_arg_1=1, var_49=1, var_49_arg_0=1, var_49_arg_1=1, var_49_arg_2=16, var_51=1, var_52=1, var_52_arg_0=1, var_53=1, var_53_arg_0=1, var_53_arg_1=1, var_54=1, var_54_arg_0=1, var_54_arg_1=1, var_54_arg_2=1, var_56=1, var_56_arg_0=1, var_57=0, var_57_arg_0=1, var_58=1, var_58_arg_0=0, var_58_arg_1=14, var_58_arg_2=1, var_61=0, var_61_arg_0=0, var_62=25, var_62_arg_0=0, var_64=9, var_65=0, var_65_arg_0=0, var_66=1, var_66_arg_0=0, var_66_arg_1=0, var_70=0, var_70_arg_0=1, var_71=0, var_71_arg_0=1, var_71_arg_1=0, var_73=0, var_73_arg_0=0, var_74=0, var_74_arg_0=0, var_74_arg_1=0, var_75=254, var_75_arg_0=1, var_76=0, var_76_arg_0=27, var_76_arg_1=254, var_77=0, var_77_arg_0=0, var_78=0, var_78_arg_0=0, var_78_arg_1=0, var_79=1, var_79_arg_0=1, var_80=255, var_80_arg_0=0, var_80_arg_1=1, var_81=0, var_82=1, var_82_arg_0=0, var_82_arg_1=0, var_82_arg_2=255, var_83=1, var_83_arg_0=1, var_84=0, var_84_arg_0=1, var_85=0, var_85_arg_0=0, var_85_arg_1=0, var_86=1, var_86_arg_0=0, var_88=1, var_88_arg_0=1, var_88_arg_1=1, var_89=1, var_89_arg_0=1, var_89_arg_1=1, var_93=0, var_93_arg_0=1, var_93_arg_1=0, var_94=251, var_94_arg_0=1, var_95=1, var_95_arg_0=0, var_95_arg_1=251, var_97=0, var_97_arg_0=1, var_98=10, var_98_arg_0=0, var_99=0, var_99_arg_0=0, var_99_arg_1=10] [L149] SORT_1 var_112_arg_0 = state_91; [L150] SORT_1 var_112_arg_1 = var_111; [L151] SORT_1 var_112_arg_2 = var_51; [L152] EXPR var_112_arg_0 ? var_112_arg_1 : var_112_arg_2 [L152] SORT_1 var_112 = var_112_arg_0 ? var_112_arg_1 : var_112_arg_2; [L153] SORT_1 var_70_arg_0 = state_69; [L154] SORT_1 var_70 = ~var_70_arg_0; [L155] SORT_1 var_71_arg_0 = state_68; [L156] SORT_1 var_71_arg_1 = var_70; [L157] SORT_1 var_71 = var_71_arg_0 & var_71_arg_1; [L158] SORT_11 var_73_arg_0 = state_72; [L159] SORT_1 var_73 = var_73_arg_0 != 0; [L160] SORT_1 var_74_arg_0 = var_71; [L161] SORT_1 var_74_arg_1 = var_73; [L162] SORT_1 var_74 = var_74_arg_0 & var_74_arg_1; [L163] SORT_1 var_75_arg_0 = state_68; [L164] SORT_1 var_75 = ~var_75_arg_0; [L165] SORT_1 var_76_arg_0 = input_6; [L166] SORT_1 var_76_arg_1 = var_75; [L167] SORT_1 var_76 = var_76_arg_0 & var_76_arg_1; [L168] SORT_1 var_77_arg_0 = var_76; [L169] var_77_arg_0 = var_77_arg_0 & mask_SORT_1 [L170] SORT_11 var_77 = var_77_arg_0; [L171] SORT_11 var_78_arg_0 = state_72; [L172] SORT_11 var_78_arg_1 = var_77; [L173] SORT_11 var_78 = var_78_arg_0 + var_78_arg_1; [L174] SORT_1 var_79_arg_0 = input_5; [L175] var_79_arg_0 = var_79_arg_0 & mask_SORT_1 [L176] SORT_11 var_79 = var_79_arg_0; [L177] SORT_11 var_80_arg_0 = var_78; [L178] SORT_11 var_80_arg_1 = var_79; [L179] SORT_11 var_80 = var_80_arg_0 - var_80_arg_1; [L180] SORT_1 var_82_arg_0 = input_7; [L181] SORT_11 var_82_arg_1 = var_81; [L182] SORT_11 var_82_arg_2 = var_80; [L183] EXPR var_82_arg_0 ? var_82_arg_1 : var_82_arg_2 [L183] SORT_11 var_82 = var_82_arg_0 ? var_82_arg_1 : var_82_arg_2; [L184] var_82 = var_82 & mask_SORT_11 [L185] SORT_11 var_83_arg_0 = var_82; [L186] SORT_1 var_83 = var_83_arg_0 != 0; [L187] SORT_1 var_84_arg_0 = var_83; [L188] SORT_1 var_84 = ~var_84_arg_0; [L189] SORT_1 var_85_arg_0 = var_74; [L190] SORT_1 var_85_arg_1 = var_84; [L191] SORT_1 var_85 = var_85_arg_0 & var_85_arg_1; [L192] SORT_1 var_86_arg_0 = var_85; [L193] SORT_1 var_86 = ~var_86_arg_0; [L194] SORT_11 var_14_arg_0 = state_12; [L195] SORT_13 var_14 = var_14_arg_0 >> 0; [L196] var_14 = var_14 & mask_SORT_13 [L197] SORT_13 var_56_arg_0 = var_14; [L198] SORT_1 var_56 = var_56_arg_0 != 0; [L199] SORT_1 var_57_arg_0 = var_56; [L200] SORT_1 var_57 = ~var_57_arg_0; [L201] var_57 = var_57 & mask_SORT_1 [L202] SORT_1 var_52_arg_0 = var_51; [L203] var_52_arg_0 = var_52_arg_0 & mask_SORT_1 [L204] SORT_13 var_52 = var_52_arg_0; [L205] SORT_13 var_53_arg_0 = var_14; [L206] SORT_13 var_53_arg_1 = var_52; [L207] SORT_1 var_53 = var_53_arg_0 == var_53_arg_1; [L208] SORT_40 var_47_arg_0 = var_46; [L209] var_47_arg_0 = var_47_arg_0 & mask_SORT_40 [L210] SORT_13 var_47 = var_47_arg_0; [L211] SORT_13 var_48_arg_0 = var_14; [L212] SORT_13 var_48_arg_1 = var_47; [L213] SORT_1 var_48 = var_48_arg_0 == var_48_arg_1; [L214] SORT_40 var_42_arg_0 = var_41; [L215] var_42_arg_0 = var_42_arg_0 & mask_SORT_40 [L216] SORT_13 var_42 = var_42_arg_0; [L217] SORT_13 var_43_arg_0 = var_14; [L218] SORT_13 var_43_arg_1 = var_42; [L219] SORT_1 var_43 = var_43_arg_0 == var_43_arg_1; [L220] SORT_19 var_36_arg_0 = var_35; [L221] var_36_arg_0 = var_36_arg_0 & mask_SORT_19 [L222] SORT_13 var_36 = var_36_arg_0; [L223] SORT_13 var_37_arg_0 = var_14; [L224] SORT_13 var_37_arg_1 = var_36; [L225] SORT_1 var_37 = var_37_arg_0 == var_37_arg_1; [L226] SORT_19 var_31_arg_0 = var_30; [L227] var_31_arg_0 = var_31_arg_0 & mask_SORT_19 [L228] SORT_13 var_31 = var_31_arg_0; [L229] SORT_13 var_32_arg_0 = var_14; [L230] SORT_13 var_32_arg_1 = var_31; [L231] SORT_1 var_32 = var_32_arg_0 == var_32_arg_1; [L232] SORT_19 var_26_arg_0 = var_25; [L233] var_26_arg_0 = var_26_arg_0 & mask_SORT_19 [L234] SORT_13 var_26 = var_26_arg_0; [L235] SORT_13 var_27_arg_0 = var_14; [L236] SORT_13 var_27_arg_1 = var_26; [L237] SORT_1 var_27 = var_27_arg_0 == var_27_arg_1; [L238] SORT_19 var_21_arg_0 = var_20; [L239] var_21_arg_0 = var_21_arg_0 & mask_SORT_19 [L240] SORT_13 var_21 = var_21_arg_0; [L241] SORT_13 var_22_arg_0 = var_14; [L242] SORT_13 var_22_arg_1 = var_21; [L243] SORT_1 var_22 = var_22_arg_0 == var_22_arg_1; [L244] SORT_13 var_16_arg_0 = var_14; [L245] SORT_13 var_16_arg_1 = var_15; [L246] SORT_1 var_16 = var_16_arg_0 == var_16_arg_1; [L247] SORT_1 var_17_arg_0 = var_16; [L248] SORT_3 var_17_arg_1 = state_10; [L249] SORT_3 var_17_arg_2 = input_9; [L250] EXPR var_17_arg_0 ? var_17_arg_1 : var_17_arg_2 [L250] SORT_3 var_17 = var_17_arg_0 ? var_17_arg_1 : var_17_arg_2; [L251] SORT_1 var_23_arg_0 = var_22; [L252] SORT_3 var_23_arg_1 = state_18; [L253] SORT_3 var_23_arg_2 = var_17; [L254] EXPR var_23_arg_0 ? var_23_arg_1 : var_23_arg_2 [L254] SORT_3 var_23 = var_23_arg_0 ? var_23_arg_1 : var_23_arg_2; [L255] SORT_1 var_28_arg_0 = var_27; [L256] SORT_3 var_28_arg_1 = state_24; [L257] SORT_3 var_28_arg_2 = var_23; [L258] EXPR var_28_arg_0 ? var_28_arg_1 : var_28_arg_2 [L258] SORT_3 var_28 = var_28_arg_0 ? var_28_arg_1 : var_28_arg_2; [L259] SORT_1 var_33_arg_0 = var_32; [L260] SORT_3 var_33_arg_1 = state_29; [L261] SORT_3 var_33_arg_2 = var_28; [L262] EXPR var_33_arg_0 ? var_33_arg_1 : var_33_arg_2 [L262] SORT_3 var_33 = var_33_arg_0 ? var_33_arg_1 : var_33_arg_2; [L263] SORT_1 var_38_arg_0 = var_37; [L264] SORT_3 var_38_arg_1 = state_34; [L265] SORT_3 var_38_arg_2 = var_33; [L266] EXPR var_38_arg_0 ? var_38_arg_1 : var_38_arg_2 [L266] SORT_3 var_38 = var_38_arg_0 ? var_38_arg_1 : var_38_arg_2; [L267] SORT_1 var_44_arg_0 = var_43; [L268] SORT_3 var_44_arg_1 = state_39; [L269] SORT_3 var_44_arg_2 = var_38; [L270] EXPR var_44_arg_0 ? var_44_arg_1 : var_44_arg_2 [L270] SORT_3 var_44 = var_44_arg_0 ? var_44_arg_1 : var_44_arg_2; [L271] SORT_1 var_49_arg_0 = var_48; [L272] SORT_3 var_49_arg_1 = state_45; [L273] SORT_3 var_49_arg_2 = var_44; [L274] EXPR var_49_arg_0 ? var_49_arg_1 : var_49_arg_2 [L274] SORT_3 var_49 = var_49_arg_0 ? var_49_arg_1 : var_49_arg_2; [L275] SORT_1 var_54_arg_0 = var_53; [L276] SORT_3 var_54_arg_1 = state_50; [L277] SORT_3 var_54_arg_2 = var_49; [L278] EXPR var_54_arg_0 ? var_54_arg_1 : var_54_arg_2 [L278] SORT_3 var_54 = var_54_arg_0 ? var_54_arg_1 : var_54_arg_2; [L279] SORT_1 var_58_arg_0 = var_57; [L280] SORT_3 var_58_arg_1 = state_55; [L281] SORT_3 var_58_arg_2 = var_54; [L282] EXPR var_58_arg_0 ? var_58_arg_1 : var_58_arg_2 [L282] SORT_3 var_58 = var_58_arg_0 ? var_58_arg_1 : var_58_arg_2; [L283] var_58 = var_58 & mask_SORT_3 [L284] SORT_3 var_88_arg_0 = state_87; [L285] SORT_3 var_88_arg_1 = var_58; [L286] SORT_1 var_88 = var_88_arg_0 == var_88_arg_1; [L287] SORT_1 var_89_arg_0 = var_86; [L288] SORT_1 var_89_arg_1 = var_88; [L289] SORT_1 var_89 = var_89_arg_0 | var_89_arg_1; [L290] SORT_1 var_110_arg_0 = state_91; [L291] SORT_1 var_110_arg_1 = input_109; [L292] SORT_1 var_110_arg_2 = var_89; [L293] EXPR var_110_arg_0 ? var_110_arg_1 : var_110_arg_2 [L293] SORT_1 var_110 = var_110_arg_0 ? var_110_arg_1 : var_110_arg_2; [L294] SORT_1 var_113_arg_0 = var_110; [L295] SORT_1 var_113 = ~var_113_arg_0; [L296] SORT_1 var_114_arg_0 = var_112; [L297] SORT_1 var_114_arg_1 = var_113; [L298] SORT_1 var_114 = var_114_arg_0 & var_114_arg_1; [L299] var_114 = var_114 & mask_SORT_1 [L300] SORT_1 bad_115_arg_0 = var_114; [L301] CALL __VERIFIER_assert(!(bad_115_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 2 procedures, 15 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 30.1s, OverallIterations: 2, TraceHistogramMax: 6, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 10 SdHoareTripleChecker+Valid, 1.2s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 7 mSDsluCounter, 39 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 25 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 22 IncrementalHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 17 mSDtfsCounter, 22 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred in iteration=1, InterpolantAutomatonStates: 5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 14.6s SatisfiabilityAnalysisTime, 3.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 15 ConstructedInterpolants, 0 QuantifiedInterpolants, 102 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 6/6 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 04:00:13,610 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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 0cfed53fd6b4f79a916e28ee79b804b829089e910b2920e7660f6197a58c3e45 --- 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 04:00:16,405 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 04:00:16,409 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 04:00:16,471 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 04:00:16,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 04:00:16,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 04:00:16,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 04:00:16,485 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 04:00:16,492 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 04:00:16,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 04:00:16,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 04:00:16,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 04:00:16,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 04:00:16,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 04:00:16,504 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 04:00:16,505 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 04:00:16,506 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 04:00:16,507 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 04:00:16,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 04:00:16,526 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 04:00:16,528 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 04:00:16,531 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 04:00:16,532 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 04:00:16,533 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 04:00:16,537 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 04:00:16,538 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 04:00:16,538 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 04:00:16,539 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 04:00:16,540 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 04:00:16,546 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 04:00:16,547 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 04:00:16,548 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 04:00:16,550 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 04:00:16,551 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 04:00:16,552 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 04:00:16,553 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 04:00:16,554 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 04:00:16,554 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 04:00:16,554 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 04:00:16,557 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 04:00:16,558 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 04:00:16,559 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-64bit-Taipan_Bitvector.epf [2022-11-03 04:00:16,616 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 04:00:16,616 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 04:00:16,618 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 04:00:16,618 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 04:00:16,619 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 04:00:16,619 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 04:00:16,620 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 04:00:16,620 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 04:00:16,620 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 04:00:16,620 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 04:00:16,622 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 04:00:16,622 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 04:00:16,624 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 04:00:16,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 04:00:16,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 04:00:16,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 04:00:16,625 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 04:00:16,625 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-11-03 04:00:16,625 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-11-03 04:00:16,625 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-11-03 04:00:16,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 04:00:16,626 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 04:00:16,626 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 04:00:16,626 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 04:00:16,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-03 04:00:16,627 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 04:00:16,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:16,627 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 04:00:16,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 04:00:16,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 04:00:16,628 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2022-11-03 04:00:16,628 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-11-03 04:00:16,628 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 04:00:16,629 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 04:00:16,629 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-11-03 04:00:16,629 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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0cfed53fd6b4f79a916e28ee79b804b829089e910b2920e7660f6197a58c3e45 [2022-11-03 04:00:17,059 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 04:00:17,102 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 04:00:17,105 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 04:00:17,106 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 04:00:17,107 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 04:00:17,109 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2022-11-03 04:00:17,183 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/f169435e8/0e037e2faa5f4fc7983f0dc1b612d5da/FLAG76062330c [2022-11-03 04:00:18,038 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 04:00:18,039 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2022-11-03 04:00:18,051 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/f169435e8/0e037e2faa5f4fc7983f0dc1b612d5da/FLAG76062330c [2022-11-03 04:00:18,287 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/data/f169435e8/0e037e2faa5f4fc7983f0dc1b612d5da [2022-11-03 04:00:18,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 04:00:18,292 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 04:00:18,296 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:18,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 04:00:18,305 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 04:00:18,306 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:18" (1/1) ... [2022-11-03 04:00:18,307 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f5d8b8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:18, skipping insertion in model container [2022-11-03 04:00:18,308 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 04:00:18" (1/1) ... [2022-11-03 04:00:18,319 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 04:00:18,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 04:00:18,562 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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1116,1129] [2022-11-03 04:00:18,786 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:18,790 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 04:00:18,821 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_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/sv-benchmarks/c/hardware-verification-bv/btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c[1116,1129] [2022-11-03 04:00:19,024 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 04:00:19,040 INFO L208 MainTranslator]: Completed translation [2022-11-03 04:00:19,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19 WrapperNode [2022-11-03 04:00:19,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 04:00:19,049 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:19,051 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 04:00:19,052 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 04:00:19,061 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,083 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,150 INFO L138 Inliner]: procedures = 11, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 780 [2022-11-03 04:00:19,151 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 04:00:19,152 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 04:00:19,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 04:00:19,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 04:00:19,190 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,256 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,273 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,284 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,294 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 04:00:19,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 04:00:19,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 04:00:19,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 04:00:19,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (1/1) ... [2022-11-03 04:00:19,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 04:00:19,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:19,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 04:00:19,355 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 04:00:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 04:00:19,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 04:00:19,397 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-03 04:00:19,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-03 04:00:19,767 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 04:00:19,770 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 04:00:20,785 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 04:00:20,797 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 04:00:20,797 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 04:00:20,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:20 BoogieIcfgContainer [2022-11-03 04:00:20,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 04:00:20,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 04:00:20,805 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 04:00:20,809 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 04:00:20,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 04:00:18" (1/3) ... [2022-11-03 04:00:20,810 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0708df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:20, skipping insertion in model container [2022-11-03 04:00:20,811 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 04:00:19" (2/3) ... [2022-11-03 04:00:20,811 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a0708df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 04:00:20, skipping insertion in model container [2022-11-03 04:00:20,812 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 04:00:20" (3/3) ... [2022-11-03 04:00:20,813 INFO L112 eAbstractionObserver]: Analyzing ICFG btor2c-lazyMod.circular_pointer_top_w32_d8_e0.c [2022-11-03 04:00:20,835 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 04:00:20,836 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 04:00:20,944 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 04:00:20,952 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;@746dafd5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 04:00:20,952 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 04:00:20,958 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 101 states have (on average 1.4752475247524752) internal successors, (149), 102 states have internal predecessors, (149), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:20,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:20,971 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:20,972 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:20,973 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:20,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:20,981 INFO L85 PathProgramCache]: Analyzing trace with hash 13956030, now seen corresponding path program 1 times [2022-11-03 04:00:20,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:21,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [221320555] [2022-11-03 04:00:21,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:21,005 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:21,006 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:21,013 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:21,020 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-11-03 04:00:21,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:21,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 1 conjunts are in the unsatisfiable core [2022-11-03 04:00:21,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:21,519 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 04:00:21,520 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:21,521 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:21,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [221320555] [2022-11-03 04:00:21,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [221320555] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:21,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:21,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-03 04:00:21,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901885106] [2022-11-03 04:00:21,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:21,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-03 04:00:21,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:21,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-03 04:00:21,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:00:21,584 INFO L87 Difference]: Start difference. First operand has 107 states, 101 states have (on average 1.4752475247524752) internal successors, (149), 102 states have internal predecessors, (149), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 04:00:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:21,648 INFO L93 Difference]: Finished difference Result 208 states and 308 transitions. [2022-11-03 04:00:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-03 04:00:21,652 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) Word has length 47 [2022-11-03 04:00:21,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:21,669 INFO L225 Difference]: With dead ends: 208 [2022-11-03 04:00:21,670 INFO L226 Difference]: Without dead ends: 103 [2022-11-03 04:00:21,675 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-03 04:00:21,681 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:21,683 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:00:21,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-11-03 04:00:21,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 103. [2022-11-03 04:00:21,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 98 states have (on average 1.4489795918367347) internal successors, (142), 98 states have internal predecessors, (142), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:21,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 148 transitions. [2022-11-03 04:00:21,772 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 148 transitions. Word has length 47 [2022-11-03 04:00:21,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:21,773 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 148 transitions. [2022-11-03 04:00:21,774 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 18.5) internal successors, (37), 2 states have internal predecessors, (37), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-03 04:00:21,774 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 148 transitions. [2022-11-03 04:00:21,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:21,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:21,780 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:21,805 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:21,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:21,996 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:21,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:21,997 INFO L85 PathProgramCache]: Analyzing trace with hash -109632008, now seen corresponding path program 1 times [2022-11-03 04:00:21,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:21,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [593442830] [2022-11-03 04:00:21,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:21,998 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:21,999 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:22,000 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:22,012 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-11-03 04:00:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:22,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:00:22,332 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:22,718 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:22,718 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:22,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [593442830] [2022-11-03 04:00:22,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [593442830] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:22,719 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:22,719 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:22,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101930487] [2022-11-03 04:00:22,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:22,734 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:22,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:22,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:22,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:22,736 INFO L87 Difference]: Start difference. First operand 103 states and 148 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:23,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:23,146 INFO L93 Difference]: Finished difference Result 408 states and 593 transitions. [2022-11-03 04:00:23,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:23,147 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:23,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:23,160 INFO L225 Difference]: With dead ends: 408 [2022-11-03 04:00:23,160 INFO L226 Difference]: Without dead ends: 307 [2022-11-03 04:00:23,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:23,167 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 922 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 922 SdHoareTripleChecker+Valid, 617 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:23,169 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [922 Valid, 617 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:23,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2022-11-03 04:00:23,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 105. [2022-11-03 04:00:23,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 100 states have (on average 1.44) internal successors, (144), 100 states have internal predecessors, (144), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:23,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 150 transitions. [2022-11-03 04:00:23,198 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 150 transitions. Word has length 47 [2022-11-03 04:00:23,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:23,199 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 150 transitions. [2022-11-03 04:00:23,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:23,199 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 150 transitions. [2022-11-03 04:00:23,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:23,201 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:23,201 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:23,228 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-11-03 04:00:23,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:23,429 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:23,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:23,430 INFO L85 PathProgramCache]: Analyzing trace with hash -927280458, now seen corresponding path program 1 times [2022-11-03 04:00:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:23,431 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [870250915] [2022-11-03 04:00:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:23,432 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:23,432 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:23,433 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:23,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-11-03 04:00:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:23,855 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:00:23,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:24,079 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:24,080 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:24,080 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:24,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [870250915] [2022-11-03 04:00:24,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [870250915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:24,081 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:24,081 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:24,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349192192] [2022-11-03 04:00:24,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:24,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:24,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:24,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:24,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:24,084 INFO L87 Difference]: Start difference. First operand 105 states and 150 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:24,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:24,504 INFO L93 Difference]: Finished difference Result 414 states and 599 transitions. [2022-11-03 04:00:24,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:24,505 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:24,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:24,507 INFO L225 Difference]: With dead ends: 414 [2022-11-03 04:00:24,507 INFO L226 Difference]: Without dead ends: 311 [2022-11-03 04:00:24,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:24,517 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 911 mSDsluCounter, 466 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 635 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:24,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 635 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:24,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-11-03 04:00:24,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 109. [2022-11-03 04:00:24,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 104 states have (on average 1.4326923076923077) internal successors, (149), 104 states have internal predecessors, (149), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:24,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 155 transitions. [2022-11-03 04:00:24,556 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 155 transitions. Word has length 47 [2022-11-03 04:00:24,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:24,557 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 155 transitions. [2022-11-03 04:00:24,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:24,558 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 155 transitions. [2022-11-03 04:00:24,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:24,561 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:24,562 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:24,582 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:24,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:24,782 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:24,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:24,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1948348812, now seen corresponding path program 1 times [2022-11-03 04:00:24,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:24,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1775541196] [2022-11-03 04:00:24,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:24,785 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:24,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:24,787 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:24,793 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-11-03 04:00:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:25,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:00:25,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:25,404 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:25,404 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:25,405 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:25,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1775541196] [2022-11-03 04:00:25,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1775541196] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:25,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:25,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:25,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2115681799] [2022-11-03 04:00:25,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:25,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:25,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:25,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:25,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:25,415 INFO L87 Difference]: Start difference. First operand 109 states and 155 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:25,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:25,772 INFO L93 Difference]: Finished difference Result 420 states and 605 transitions. [2022-11-03 04:00:25,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:25,773 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:25,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:25,775 INFO L225 Difference]: With dead ends: 420 [2022-11-03 04:00:25,775 INFO L226 Difference]: Without dead ends: 313 [2022-11-03 04:00:25,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:25,787 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 907 mSDsluCounter, 459 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 907 SdHoareTripleChecker+Valid, 627 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:25,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [907 Valid, 627 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:25,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2022-11-03 04:00:25,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 111. [2022-11-03 04:00:25,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 106 states have (on average 1.4245283018867925) internal successors, (151), 106 states have internal predecessors, (151), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:25,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 157 transitions. [2022-11-03 04:00:25,819 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 157 transitions. Word has length 47 [2022-11-03 04:00:25,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:25,821 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 157 transitions. [2022-11-03 04:00:25,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:25,822 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 157 transitions. [2022-11-03 04:00:25,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:25,828 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:25,828 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:25,854 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:26,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:26,044 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:26,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:26,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1335501234, now seen corresponding path program 1 times [2022-11-03 04:00:26,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:26,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71802697] [2022-11-03 04:00:26,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:26,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:26,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:26,048 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:26,054 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-11-03 04:00:26,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:26,342 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:00:26,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:26,568 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:26,568 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:26,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71802697] [2022-11-03 04:00:26,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71802697] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:26,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:26,569 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:26,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032737317] [2022-11-03 04:00:26,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:26,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:26,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:26,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:26,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:26,571 INFO L87 Difference]: Start difference. First operand 111 states and 157 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:26,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:26,892 INFO L93 Difference]: Finished difference Result 424 states and 608 transitions. [2022-11-03 04:00:26,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:26,893 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:26,895 INFO L225 Difference]: With dead ends: 424 [2022-11-03 04:00:26,896 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 04:00:26,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:26,897 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 893 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 648 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:26,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 648 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:26,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 04:00:26,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 113. [2022-11-03 04:00:26,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 108 states have (on average 1.4166666666666667) internal successors, (153), 108 states have internal predecessors, (153), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:26,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 159 transitions. [2022-11-03 04:00:26,914 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 159 transitions. Word has length 47 [2022-11-03 04:00:26,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:26,914 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 159 transitions. [2022-11-03 04:00:26,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 159 transitions. [2022-11-03 04:00:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:26,916 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:26,916 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:26,938 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:27,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:27,133 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:27,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:27,133 INFO L85 PathProgramCache]: Analyzing trace with hash 1593666672, now seen corresponding path program 1 times [2022-11-03 04:00:27,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:27,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [689376999] [2022-11-03 04:00:27,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:27,134 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:27,135 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:27,136 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:27,140 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-11-03 04:00:27,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:27,427 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:00:27,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:27,679 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:27,679 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:27,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [689376999] [2022-11-03 04:00:27,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [689376999] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:27,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:27,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647312566] [2022-11-03 04:00:27,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:27,682 INFO L87 Difference]: Start difference. First operand 113 states and 159 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:27,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:27,988 INFO L93 Difference]: Finished difference Result 428 states and 611 transitions. [2022-11-03 04:00:27,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:27,989 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:27,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:27,992 INFO L225 Difference]: With dead ends: 428 [2022-11-03 04:00:27,992 INFO L226 Difference]: Without dead ends: 317 [2022-11-03 04:00:27,993 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:27,994 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 881 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 881 SdHoareTripleChecker+Valid, 663 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:27,994 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [881 Valid, 663 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:27,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2022-11-03 04:00:28,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 115. [2022-11-03 04:00:28,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 110 states have (on average 1.4090909090909092) internal successors, (155), 110 states have internal predecessors, (155), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:28,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 161 transitions. [2022-11-03 04:00:28,009 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 161 transitions. Word has length 47 [2022-11-03 04:00:28,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:28,010 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 161 transitions. [2022-11-03 04:00:28,010 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:28,011 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 161 transitions. [2022-11-03 04:00:28,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:28,011 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:28,012 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:28,033 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:28,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:28,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:28,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:28,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1200639662, now seen corresponding path program 1 times [2022-11-03 04:00:28,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:28,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26902150] [2022-11-03 04:00:28,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:28,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:28,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:28,228 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:28,230 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-11-03 04:00:28,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:28,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:00:28,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:28,734 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:28,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:28,735 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:28,735 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26902150] [2022-11-03 04:00:28,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26902150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:28,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:28,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:28,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616742420] [2022-11-03 04:00:28,736 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:28,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:28,737 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:28,738 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:28,738 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:28,738 INFO L87 Difference]: Start difference. First operand 115 states and 161 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:29,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:29,290 INFO L93 Difference]: Finished difference Result 432 states and 614 transitions. [2022-11-03 04:00:29,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:29,291 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:29,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:29,293 INFO L225 Difference]: With dead ends: 432 [2022-11-03 04:00:29,294 INFO L226 Difference]: Without dead ends: 319 [2022-11-03 04:00:29,294 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:29,296 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 895 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 895 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:29,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [895 Valid, 560 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:00:29,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-11-03 04:00:29,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 117. [2022-11-03 04:00:29,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 112 states have (on average 1.4017857142857142) internal successors, (157), 112 states have internal predecessors, (157), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:29,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 163 transitions. [2022-11-03 04:00:29,312 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 163 transitions. Word has length 47 [2022-11-03 04:00:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:29,313 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 163 transitions. [2022-11-03 04:00:29,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:29,322 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 163 transitions. [2022-11-03 04:00:29,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:29,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:29,326 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:29,348 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:29,541 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:29,542 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:29,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:29,542 INFO L85 PathProgramCache]: Analyzing trace with hash 391293036, now seen corresponding path program 1 times [2022-11-03 04:00:29,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:29,543 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [6396897] [2022-11-03 04:00:29,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:29,543 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:29,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:29,548 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:29,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-11-03 04:00:29,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:29,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:00:29,829 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:30,066 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:30,066 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:30,067 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:30,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [6396897] [2022-11-03 04:00:30,067 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [6396897] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:30,067 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:30,067 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:30,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732275572] [2022-11-03 04:00:30,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:30,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:30,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:30,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:30,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:30,070 INFO L87 Difference]: Start difference. First operand 117 states and 163 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:30,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:30,582 INFO L93 Difference]: Finished difference Result 436 states and 617 transitions. [2022-11-03 04:00:30,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:30,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:30,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:30,585 INFO L225 Difference]: With dead ends: 436 [2022-11-03 04:00:30,585 INFO L226 Difference]: Without dead ends: 321 [2022-11-03 04:00:30,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-03 04:00:30,587 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 874 mSDsluCounter, 414 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 583 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:30,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 583 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:00:30,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 321 states. [2022-11-03 04:00:30,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 321 to 119. [2022-11-03 04:00:30,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 114 states have (on average 1.394736842105263) internal successors, (159), 114 states have internal predecessors, (159), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:30,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 165 transitions. [2022-11-03 04:00:30,604 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 165 transitions. Word has length 47 [2022-11-03 04:00:30,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:30,605 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 165 transitions. [2022-11-03 04:00:30,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:30,605 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 165 transitions. [2022-11-03 04:00:30,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:30,606 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:30,606 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:30,625 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:30,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:30,822 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:30,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash 448551338, now seen corresponding path program 1 times [2022-11-03 04:00:30,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:30,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710797136] [2022-11-03 04:00:30,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:30,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:30,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:30,824 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:30,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-11-03 04:00:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:31,119 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:00:31,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:31,358 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:31,358 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:31,359 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:31,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710797136] [2022-11-03 04:00:31,359 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710797136] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:31,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:31,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 04:00:31,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [275800066] [2022-11-03 04:00:31,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:31,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 04:00:31,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:31,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 04:00:31,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 04:00:31,362 INFO L87 Difference]: Start difference. First operand 119 states and 165 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:31,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:31,826 INFO L93 Difference]: Finished difference Result 317 states and 437 transitions. [2022-11-03 04:00:31,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 04:00:31,827 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:31,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:31,829 INFO L225 Difference]: With dead ends: 317 [2022-11-03 04:00:31,829 INFO L226 Difference]: Without dead ends: 315 [2022-11-03 04:00:31,829 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:00:31,832 INFO L413 NwaCegarLoop]: 163 mSDtfsCounter, 805 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 805 SdHoareTripleChecker+Valid, 614 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:31,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [805 Valid, 614 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-03 04:00:31,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2022-11-03 04:00:31,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 159. [2022-11-03 04:00:31,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 154 states have (on average 1.37012987012987) internal successors, (211), 154 states have internal predecessors, (211), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-03 04:00:31,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 217 transitions. [2022-11-03 04:00:31,853 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 217 transitions. Word has length 47 [2022-11-03 04:00:31,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:31,854 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 217 transitions. [2022-11-03 04:00:31,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:31,854 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 217 transitions. [2022-11-03 04:00:31,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-03 04:00:31,856 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:31,856 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 04:00:31,872 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:32,072 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:32,072 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:32,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:32,072 INFO L85 PathProgramCache]: Analyzing trace with hash 510590952, now seen corresponding path program 1 times [2022-11-03 04:00:32,073 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:32,073 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234605629] [2022-11-03 04:00:32,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:32,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:32,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:32,075 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:32,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-11-03 04:00:32,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:32,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:00:32,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:32,366 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-03 04:00:32,366 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:32,366 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:32,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234605629] [2022-11-03 04:00:32,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234605629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:32,367 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:32,367 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-03 04:00:32,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422411066] [2022-11-03 04:00:32,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:32,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-03 04:00:32,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:32,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-03 04:00:32,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-03 04:00:32,369 INFO L87 Difference]: Start difference. First operand 159 states and 217 transitions. Second operand has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:32,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:32,449 INFO L93 Difference]: Finished difference Result 434 states and 600 transitions. [2022-11-03 04:00:32,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 04:00:32,450 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 47 [2022-11-03 04:00:32,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:32,452 INFO L225 Difference]: With dead ends: 434 [2022-11-03 04:00:32,461 INFO L226 Difference]: Without dead ends: 277 [2022-11-03 04:00:32,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 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 04:00:32,463 INFO L413 NwaCegarLoop]: 157 mSDtfsCounter, 263 mSDsluCounter, 298 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:32,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 455 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-03 04:00:32,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 277 states. [2022-11-03 04:00:32,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 277 to 167. [2022-11-03 04:00:32,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 159 states have (on average 1.3584905660377358) internal successors, (216), 159 states have internal predecessors, (216), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:32,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 228 transitions. [2022-11-03 04:00:32,490 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 228 transitions. Word has length 47 [2022-11-03 04:00:32,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:32,490 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 228 transitions. [2022-11-03 04:00:32,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.75) internal successors, (35), 4 states have internal predecessors, (35), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-11-03 04:00:32,491 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 228 transitions. [2022-11-03 04:00:32,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:32,492 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:32,493 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:32,509 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:32,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:32,709 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:32,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:32,709 INFO L85 PathProgramCache]: Analyzing trace with hash -340023667, now seen corresponding path program 1 times [2022-11-03 04:00:32,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:32,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1727907571] [2022-11-03 04:00:32,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:32,711 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:32,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:32,712 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:32,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-11-03 04:00:33,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:33,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:00:33,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:33,668 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 04:00:33,669 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:33,934 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:33,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1727907571] [2022-11-03 04:00:33,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1727907571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:33,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1638096278] [2022-11-03 04:00:33,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:33,936 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:00:33,936 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:00:33,939 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:00:33,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Waiting until timeout for monitored process [2022-11-03 04:00:34,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:34,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:00:34,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:34,799 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:34,800 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:34,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1638096278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:34,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:00:34,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 04:00:34,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253174064] [2022-11-03 04:00:34,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:34,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:34,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:34,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:34,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:00:34,803 INFO L87 Difference]: Start difference. First operand 167 states and 228 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:35,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:35,107 INFO L93 Difference]: Finished difference Result 719 states and 982 transitions. [2022-11-03 04:00:35,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:35,108 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:35,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:35,112 INFO L225 Difference]: With dead ends: 719 [2022-11-03 04:00:35,112 INFO L226 Difference]: Without dead ends: 562 [2022-11-03 04:00:35,113 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 430 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:00:35,114 INFO L413 NwaCegarLoop]: 201 mSDtfsCounter, 601 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:35,114 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 600 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:00:35,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-11-03 04:00:35,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 267. [2022-11-03 04:00:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 259 states have (on average 1.3513513513513513) internal successors, (350), 259 states have internal predecessors, (350), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 362 transitions. [2022-11-03 04:00:35,155 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 362 transitions. Word has length 154 [2022-11-03 04:00:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:35,156 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 362 transitions. [2022-11-03 04:00:35,156 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:35,157 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 362 transitions. [2022-11-03 04:00:35,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:35,162 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:35,162 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:35,185 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:35,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (13)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:35,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:00:35,582 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:35,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:35,583 INFO L85 PathProgramCache]: Analyzing trace with hash 2078460811, now seen corresponding path program 1 times [2022-11-03 04:00:35,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:35,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [562582836] [2022-11-03 04:00:35,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:35,584 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:35,585 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:35,586 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:35,587 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-11-03 04:00:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:36,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:00:36,079 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:36,472 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 04:00:36,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:36,710 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:36,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [562582836] [2022-11-03 04:00:36,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [562582836] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:36,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [38842845] [2022-11-03 04:00:36,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:36,711 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:00:36,711 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:00:36,712 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:00:36,714 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-11-03 04:00:37,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:37,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:00:37,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:37,485 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:37,486 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:37,486 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [38842845] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:37,486 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:00:37,486 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-11-03 04:00:37,487 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679560119] [2022-11-03 04:00:37,487 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:37,488 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:00:37,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:37,488 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:00:37,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-03 04:00:37,489 INFO L87 Difference]: Start difference. First operand 267 states and 362 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:37,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:37,681 INFO L93 Difference]: Finished difference Result 1186 states and 1617 transitions. [2022-11-03 04:00:37,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:00:37,682 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:37,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:37,687 INFO L225 Difference]: With dead ends: 1186 [2022-11-03 04:00:37,687 INFO L226 Difference]: Without dead ends: 929 [2022-11-03 04:00:37,688 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 446 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:00:37,689 INFO L413 NwaCegarLoop]: 334 mSDtfsCounter, 568 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:37,689 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 919 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:00:37,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 929 states. [2022-11-03 04:00:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 929 to 339. [2022-11-03 04:00:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 331 states have (on average 1.3776435045317221) internal successors, (456), 331 states have internal predecessors, (456), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 468 transitions. [2022-11-03 04:00:37,732 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 468 transitions. Word has length 154 [2022-11-03 04:00:37,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:37,732 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 468 transitions. [2022-11-03 04:00:37,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:37,733 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 468 transitions. [2022-11-03 04:00:37,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:37,736 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:37,736 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:37,757 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:37,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:38,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:00:38,151 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:38,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:38,152 INFO L85 PathProgramCache]: Analyzing trace with hash 2062942093, now seen corresponding path program 1 times [2022-11-03 04:00:38,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:38,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [676380061] [2022-11-03 04:00:38,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:38,153 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:38,153 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:38,154 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:38,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-11-03 04:00:38,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:38,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:00:38,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:38,954 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 04:00:38,954 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:39,124 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:39,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [676380061] [2022-11-03 04:00:39,124 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [676380061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:39,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1044024262] [2022-11-03 04:00:39,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:39,125 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:00:39,125 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:00:39,129 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:00:39,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2022-11-03 04:00:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:39,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:00:39,780 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:40,120 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:00:40,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:40,412 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:00:40,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1044024262] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:40,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031487898] [2022-11-03 04:00:40,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:40,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:40,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:40,416 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:40,423 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-11-03 04:00:40,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:40,831 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:00:40,837 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:00:41,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:41,442 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:00:41,442 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031487898] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:41,442 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-03 04:00:41,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6, 6, 6] total 12 [2022-11-03 04:00:41,443 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618505483] [2022-11-03 04:00:41,443 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-03 04:00:41,444 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 04:00:41,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:41,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 04:00:41,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:00:41,446 INFO L87 Difference]: Start difference. First operand 339 states and 468 transitions. Second operand has 12 states, 11 states have (on average 23.0) internal successors, (253), 12 states have internal predecessors, (253), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 04:00:42,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:42,537 INFO L93 Difference]: Finished difference Result 1023 states and 1401 transitions. [2022-11-03 04:00:42,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-03 04:00:42,538 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 23.0) internal successors, (253), 12 states have internal predecessors, (253), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 154 [2022-11-03 04:00:42,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:42,541 INFO L225 Difference]: With dead ends: 1023 [2022-11-03 04:00:42,542 INFO L226 Difference]: Without dead ends: 694 [2022-11-03 04:00:42,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 907 GetRequests, 888 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2022-11-03 04:00:42,543 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 263 mSDsluCounter, 2327 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 266 SdHoareTripleChecker+Valid, 2591 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:42,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [266 Valid, 2591 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 408 Invalid, 0 Unknown, 30 Unchecked, 0.7s Time] [2022-11-03 04:00:42,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 694 states. [2022-11-03 04:00:42,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 694 to 429. [2022-11-03 04:00:42,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 429 states, 421 states have (on average 1.3610451306413303) internal successors, (573), 421 states have internal predecessors, (573), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:42,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 585 transitions. [2022-11-03 04:00:42,599 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 585 transitions. Word has length 154 [2022-11-03 04:00:42,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:42,600 INFO L495 AbstractCegarLoop]: Abstraction has 429 states and 585 transitions. [2022-11-03 04:00:42,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 23.0) internal successors, (253), 12 states have internal predecessors, (253), 5 states have call successors, (12), 2 states have call predecessors, (12), 3 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 04:00:42,600 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 585 transitions. [2022-11-03 04:00:42,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:42,603 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:42,603 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:42,614 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:42,835 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:43,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:43,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:43,208 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:43,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:43,209 INFO L85 PathProgramCache]: Analyzing trace with hash -183112439, now seen corresponding path program 1 times [2022-11-03 04:00:43,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:43,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1489023917] [2022-11-03 04:00:43,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:43,210 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:43,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:43,211 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:43,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-11-03 04:00:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:43,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:43,692 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:44,191 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:44,191 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:44,191 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:44,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1489023917] [2022-11-03 04:00:44,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1489023917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:44,192 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:44,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:44,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889253460] [2022-11-03 04:00:44,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:44,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:44,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:44,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:44,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:44,198 INFO L87 Difference]: Start difference. First operand 429 states and 585 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:44,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:44,624 INFO L93 Difference]: Finished difference Result 1330 states and 1824 transitions. [2022-11-03 04:00:44,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:44,625 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:44,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:44,629 INFO L225 Difference]: With dead ends: 1330 [2022-11-03 04:00:44,630 INFO L226 Difference]: Without dead ends: 1001 [2022-11-03 04:00:44,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:44,632 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 353 mSDsluCounter, 772 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 356 SdHoareTripleChecker+Valid, 998 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 51 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:44,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [356 Valid, 998 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 123 Invalid, 0 Unknown, 51 Unchecked, 0.3s Time] [2022-11-03 04:00:44,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-11-03 04:00:44,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 445. [2022-11-03 04:00:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 437 states have (on average 1.356979405034325) internal successors, (593), 437 states have internal predecessors, (593), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:44,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 605 transitions. [2022-11-03 04:00:44,680 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 605 transitions. Word has length 154 [2022-11-03 04:00:44,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:44,681 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 605 transitions. [2022-11-03 04:00:44,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 605 transitions. [2022-11-03 04:00:44,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:44,684 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:44,684 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:44,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:44,905 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:44,906 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:44,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:44,906 INFO L85 PathProgramCache]: Analyzing trace with hash 847928459, now seen corresponding path program 1 times [2022-11-03 04:00:44,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:44,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1121432981] [2022-11-03 04:00:44,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:44,907 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:44,907 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:44,908 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:44,912 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-11-03 04:00:45,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:45,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:45,408 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:45,936 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:45,936 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:45,936 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:45,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1121432981] [2022-11-03 04:00:45,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1121432981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:45,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:45,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:45,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42016101] [2022-11-03 04:00:45,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:45,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:45,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:45,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:45,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:45,939 INFO L87 Difference]: Start difference. First operand 445 states and 605 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:46,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:46,320 INFO L93 Difference]: Finished difference Result 1330 states and 1822 transitions. [2022-11-03 04:00:46,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:46,321 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:46,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:46,325 INFO L225 Difference]: With dead ends: 1330 [2022-11-03 04:00:46,325 INFO L226 Difference]: Without dead ends: 1001 [2022-11-03 04:00:46,326 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:46,327 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 384 mSDsluCounter, 698 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 885 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:46,327 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 885 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 116 Invalid, 0 Unknown, 63 Unchecked, 0.3s Time] [2022-11-03 04:00:46,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1001 states. [2022-11-03 04:00:46,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1001 to 453. [2022-11-03 04:00:46,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 453 states, 445 states have (on average 1.355056179775281) internal successors, (603), 445 states have internal predecessors, (603), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:46,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 453 states to 453 states and 615 transitions. [2022-11-03 04:00:46,366 INFO L78 Accepts]: Start accepts. Automaton has 453 states and 615 transitions. Word has length 154 [2022-11-03 04:00:46,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:46,367 INFO L495 AbstractCegarLoop]: Abstraction has 453 states and 615 transitions. [2022-11-03 04:00:46,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:46,368 INFO L276 IsEmpty]: Start isEmpty. Operand 453 states and 615 transitions. [2022-11-03 04:00:46,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:46,370 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:46,371 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:46,392 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:46,592 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:46,592 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:46,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:46,593 INFO L85 PathProgramCache]: Analyzing trace with hash -2095653619, now seen corresponding path program 1 times [2022-11-03 04:00:46,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:46,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [71349743] [2022-11-03 04:00:46,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:46,594 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:46,594 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:46,595 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:46,599 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-11-03 04:00:47,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:47,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:47,621 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:47,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:47,622 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:47,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [71349743] [2022-11-03 04:00:47,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [71349743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:47,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:47,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:47,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96554667] [2022-11-03 04:00:47,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:47,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:47,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:47,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:47,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:47,625 INFO L87 Difference]: Start difference. First operand 453 states and 615 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:48,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:48,018 INFO L93 Difference]: Finished difference Result 1278 states and 1744 transitions. [2022-11-03 04:00:48,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:48,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:48,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:48,023 INFO L225 Difference]: With dead ends: 1278 [2022-11-03 04:00:48,023 INFO L226 Difference]: Without dead ends: 949 [2022-11-03 04:00:48,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:48,025 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 308 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 311 SdHoareTripleChecker+Valid, 995 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 52 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:48,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [311 Valid, 995 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 122 Invalid, 0 Unknown, 52 Unchecked, 0.3s Time] [2022-11-03 04:00:48,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2022-11-03 04:00:48,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 461. [2022-11-03 04:00:48,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 461 states, 453 states have (on average 1.3532008830022075) internal successors, (613), 453 states have internal predecessors, (613), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:48,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 461 states to 461 states and 625 transitions. [2022-11-03 04:00:48,060 INFO L78 Accepts]: Start accepts. Automaton has 461 states and 625 transitions. Word has length 154 [2022-11-03 04:00:48,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:48,060 INFO L495 AbstractCegarLoop]: Abstraction has 461 states and 625 transitions. [2022-11-03 04:00:48,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:48,061 INFO L276 IsEmpty]: Start isEmpty. Operand 461 states and 625 transitions. [2022-11-03 04:00:48,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:48,063 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:48,064 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:48,095 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:48,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:48,286 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:48,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:48,287 INFO L85 PathProgramCache]: Analyzing trace with hash 258731663, now seen corresponding path program 1 times [2022-11-03 04:00:48,287 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:48,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1585628120] [2022-11-03 04:00:48,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:48,288 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:48,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:48,289 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:48,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-11-03 04:00:48,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:48,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:48,819 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:49,353 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:49,354 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:49,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:49,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1585628120] [2022-11-03 04:00:49,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1585628120] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:49,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:49,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:49,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310992260] [2022-11-03 04:00:49,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:49,357 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:49,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:49,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:49,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:49,360 INFO L87 Difference]: Start difference. First operand 461 states and 625 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:49,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:49,725 INFO L93 Difference]: Finished difference Result 1262 states and 1718 transitions. [2022-11-03 04:00:49,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:49,726 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:49,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:49,730 INFO L225 Difference]: With dead ends: 1262 [2022-11-03 04:00:49,730 INFO L226 Difference]: Without dead ends: 933 [2022-11-03 04:00:49,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:49,732 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 331 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 873 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 55 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:49,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 873 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 115 Invalid, 0 Unknown, 55 Unchecked, 0.3s Time] [2022-11-03 04:00:49,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-11-03 04:00:49,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 469. [2022-11-03 04:00:49,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 469 states, 461 states have (on average 1.351409978308026) internal successors, (623), 461 states have internal predecessors, (623), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:49,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 469 states to 469 states and 635 transitions. [2022-11-03 04:00:49,768 INFO L78 Accepts]: Start accepts. Automaton has 469 states and 635 transitions. Word has length 154 [2022-11-03 04:00:49,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:49,768 INFO L495 AbstractCegarLoop]: Abstraction has 469 states and 635 transitions. [2022-11-03 04:00:49,769 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:49,769 INFO L276 IsEmpty]: Start isEmpty. Operand 469 states and 635 transitions. [2022-11-03 04:00:49,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:49,772 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:49,772 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:49,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:49,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:49,994 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:49,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:49,995 INFO L85 PathProgramCache]: Analyzing trace with hash -327544559, now seen corresponding path program 1 times [2022-11-03 04:00:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:49,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2008963765] [2022-11-03 04:00:49,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:49,996 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:49,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:49,997 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:49,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-11-03 04:00:50,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:50,446 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:50,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:51,013 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:51,014 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:51,014 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:51,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2008963765] [2022-11-03 04:00:51,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2008963765] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:51,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:51,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:51,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350926355] [2022-11-03 04:00:51,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:51,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:51,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:51,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:51,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:51,016 INFO L87 Difference]: Start difference. First operand 469 states and 635 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:51,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:51,412 INFO L93 Difference]: Finished difference Result 1332 states and 1820 transitions. [2022-11-03 04:00:51,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:51,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:51,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:51,417 INFO L225 Difference]: With dead ends: 1332 [2022-11-03 04:00:51,417 INFO L226 Difference]: Without dead ends: 1003 [2022-11-03 04:00:51,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:51,422 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 310 mSDsluCounter, 804 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 313 SdHoareTripleChecker+Valid, 1052 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 61 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:51,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [313 Valid, 1052 Invalid, 197 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 61 Unchecked, 0.3s Time] [2022-11-03 04:00:51,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2022-11-03 04:00:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 475. [2022-11-03 04:00:51,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 475 states, 467 states have (on average 1.3490364025695931) internal successors, (630), 467 states have internal predecessors, (630), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:51,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 475 states to 475 states and 642 transitions. [2022-11-03 04:00:51,480 INFO L78 Accepts]: Start accepts. Automaton has 475 states and 642 transitions. Word has length 154 [2022-11-03 04:00:51,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:51,481 INFO L495 AbstractCegarLoop]: Abstraction has 475 states and 642 transitions. [2022-11-03 04:00:51,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:51,482 INFO L276 IsEmpty]: Start isEmpty. Operand 475 states and 642 transitions. [2022-11-03 04:00:51,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:51,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:51,485 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:51,513 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:51,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:51,701 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:51,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:51,702 INFO L85 PathProgramCache]: Analyzing trace with hash 997311635, now seen corresponding path program 1 times [2022-11-03 04:00:51,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:51,703 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [538191007] [2022-11-03 04:00:51,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:51,703 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:51,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:51,704 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:51,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-11-03 04:00:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:52,147 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:00:52,151 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:52,707 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:52,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:52,708 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:52,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [538191007] [2022-11-03 04:00:52,708 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [538191007] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:52,708 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:52,708 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:52,709 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675252176] [2022-11-03 04:00:52,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:52,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:52,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:52,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:52,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:52,711 INFO L87 Difference]: Start difference. First operand 475 states and 642 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:53,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:53,125 INFO L93 Difference]: Finished difference Result 1332 states and 1819 transitions. [2022-11-03 04:00:53,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:53,126 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:53,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:53,130 INFO L225 Difference]: With dead ends: 1332 [2022-11-03 04:00:53,130 INFO L226 Difference]: Without dead ends: 1003 [2022-11-03 04:00:53,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:53,132 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 338 mSDsluCounter, 746 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 341 SdHoareTripleChecker+Valid, 961 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:53,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [341 Valid, 961 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 126 Invalid, 0 Unknown, 66 Unchecked, 0.3s Time] [2022-11-03 04:00:53,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2022-11-03 04:00:53,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 479. [2022-11-03 04:00:53,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 479 states, 471 states have (on average 1.3481953290870488) internal successors, (635), 471 states have internal predecessors, (635), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:53,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 479 states to 479 states and 647 transitions. [2022-11-03 04:00:53,172 INFO L78 Accepts]: Start accepts. Automaton has 479 states and 647 transitions. Word has length 154 [2022-11-03 04:00:53,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:53,173 INFO L495 AbstractCegarLoop]: Abstraction has 479 states and 647 transitions. [2022-11-03 04:00:53,173 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:53,173 INFO L276 IsEmpty]: Start isEmpty. Operand 479 states and 647 transitions. [2022-11-03 04:00:53,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:53,176 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:53,176 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:53,201 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:53,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:53,398 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:53,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:53,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1237551381, now seen corresponding path program 1 times [2022-11-03 04:00:53,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:53,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506556501] [2022-11-03 04:00:53,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:53,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:53,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:53,402 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:53,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-11-03 04:00:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:53,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:00:53,880 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:54,293 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:00:54,293 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:00:54,293 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:54,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506556501] [2022-11-03 04:00:54,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506556501] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:00:54,294 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 04:00:54,294 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 04:00:54,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680389017] [2022-11-03 04:00:54,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:00:54,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:00:54,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:00:54,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:00:54,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:00:54,296 INFO L87 Difference]: Start difference. First operand 479 states and 647 transitions. Second operand has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:54,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:00:54,618 INFO L93 Difference]: Finished difference Result 1234 states and 1674 transitions. [2022-11-03 04:00:54,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:00:54,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:00:54,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:00:54,622 INFO L225 Difference]: With dead ends: 1234 [2022-11-03 04:00:54,623 INFO L226 Difference]: Without dead ends: 905 [2022-11-03 04:00:54,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-03 04:00:54,625 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 241 mSDsluCounter, 749 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 965 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 66 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:00:54,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [244 Valid, 965 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 120 Invalid, 0 Unknown, 66 Unchecked, 0.2s Time] [2022-11-03 04:00:54,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 905 states. [2022-11-03 04:00:54,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 905 to 483. [2022-11-03 04:00:54,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 475 states have (on average 1.3473684210526315) internal successors, (640), 475 states have internal predecessors, (640), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:00:54,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 652 transitions. [2022-11-03 04:00:54,662 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 652 transitions. Word has length 154 [2022-11-03 04:00:54,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:00:54,663 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 652 transitions. [2022-11-03 04:00:54,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 21.666666666666668) internal successors, (130), 6 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:00:54,663 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 652 transitions. [2022-11-03 04:00:54,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:00:54,666 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:00:54,666 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:00:54,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (25)] Forceful destruction successful, exit code 0 [2022-11-03 04:00:54,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:00:54,881 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:00:54,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:00:54,882 INFO L85 PathProgramCache]: Analyzing trace with hash -1323311465, now seen corresponding path program 1 times [2022-11-03 04:00:54,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:00:54,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1273590704] [2022-11-03 04:00:54,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:54,883 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:00:54,883 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:00:54,884 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:00:54,888 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-11-03 04:00:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:55,337 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:00:55,341 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:56,147 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 31 proven. 16 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-03 04:00:56,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:58,177 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:00:58,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1273590704] [2022-11-03 04:00:58,177 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1273590704] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:00:58,177 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1347830140] [2022-11-03 04:00:58,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:58,178 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:00:58,178 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:00:58,179 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:00:58,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Waiting until timeout for monitored process [2022-11-03 04:00:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:58,793 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:00:58,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:00:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:00:59,098 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:00:59,391 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:00:59,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1347830140] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:00:59,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [385024584] [2022-11-03 04:00:59,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:00:59,392 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:00:59,392 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:00:59,398 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:00:59,407 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-11-03 04:00:59,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:00:59,788 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:00:59,793 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:00,026 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:01:00,026 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:00,277 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 2 proven. 30 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:01:00,277 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [385024584] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:00,277 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-03 04:01:00,277 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 6, 6, 6, 6] total 14 [2022-11-03 04:01:00,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000759564] [2022-11-03 04:01:00,278 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:00,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:01:00,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:00,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:01:00,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:00,280 INFO L87 Difference]: Start difference. First operand 483 states and 652 transitions. Second operand has 14 states, 13 states have (on average 19.23076923076923) internal successors, (250), 14 states have internal predecessors, (250), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 04:01:02,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:02,379 INFO L93 Difference]: Finished difference Result 1019 states and 1406 transitions. [2022-11-03 04:01:02,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-03 04:01:02,380 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 19.23076923076923) internal successors, (250), 14 states have internal predecessors, (250), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) Word has length 154 [2022-11-03 04:01:02,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:02,385 INFO L225 Difference]: With dead ends: 1019 [2022-11-03 04:01:02,385 INFO L226 Difference]: Without dead ends: 690 [2022-11-03 04:01:02,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 921 GetRequests, 882 SyntacticMatches, 2 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=337, Invalid=1145, Unknown=0, NotChecked=0, Total=1482 [2022-11-03 04:01:02,388 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 547 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 1130 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 547 SdHoareTripleChecker+Valid, 4141 SdHoareTripleChecker+Invalid, 1374 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 239 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:02,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [547 Valid, 4141 Invalid, 1374 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1130 Invalid, 0 Unknown, 239 Unchecked, 1.4s Time] [2022-11-03 04:01:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2022-11-03 04:01:02,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 383. [2022-11-03 04:01:02,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 375 states have (on average 1.3386666666666667) internal successors, (502), 375 states have internal predecessors, (502), 6 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2022-11-03 04:01:02,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 514 transitions. [2022-11-03 04:01:02,425 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 514 transitions. Word has length 154 [2022-11-03 04:01:02,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:02,426 INFO L495 AbstractCegarLoop]: Abstraction has 383 states and 514 transitions. [2022-11-03 04:01:02,426 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 19.23076923076923) internal successors, (250), 14 states have internal predecessors, (250), 5 states have call successors, (12), 1 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-03 04:01:02,426 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 514 transitions. [2022-11-03 04:01:02,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:02,429 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:02,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:02,451 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:02,655 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (27)] Ended with exit code 0 [2022-11-03 04:01:02,879 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Ended with exit code 0 [2022-11-03 04:01:03,051 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,27 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,28 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:03,052 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:03,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:03,052 INFO L85 PathProgramCache]: Analyzing trace with hash -1457265389, now seen corresponding path program 1 times [2022-11-03 04:01:03,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:03,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1311654201] [2022-11-03 04:01:03,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:03,054 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:03,054 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:03,055 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:03,058 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Waiting until timeout for monitored process [2022-11-03 04:01:03,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:03,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-03 04:01:03,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:04,050 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:01:04,050 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:04,108 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:04,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1311654201] [2022-11-03 04:01:04,108 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1311654201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:04,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [534419011] [2022-11-03 04:01:04,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:04,109 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:04,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:04,114 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:04,141 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Waiting until timeout for monitored process [2022-11-03 04:01:04,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:04,972 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 04:01:04,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:01:05,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:06,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [534419011] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:06,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964215914] [2022-11-03 04:01:06,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:06,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:06,195 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:06,198 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:06,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-11-03 04:01:06,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:06,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-03 04:01:06,597 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:07,614 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:01:07,614 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:08,233 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 20 proven. 12 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:01:08,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964215914] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:08,233 INFO L184 FreeRefinementEngine]: Found 0 perfect and 4 imperfect interpolant sequences. [2022-11-03 04:01:08,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 12, 8, 8] total 28 [2022-11-03 04:01:08,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311292705] [2022-11-03 04:01:08,234 INFO L85 oduleStraightlineAll]: Using 4 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:08,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-11-03 04:01:08,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:08,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-11-03 04:01:08,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=1099, Unknown=0, NotChecked=0, Total=1190 [2022-11-03 04:01:08,237 INFO L87 Difference]: Start difference. First operand 383 states and 514 transitions. Second operand has 28 states, 28 states have (on average 16.107142857142858) internal successors, (451), 28 states have internal predecessors, (451), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2022-11-03 04:01:16,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:16,704 INFO L93 Difference]: Finished difference Result 3173 states and 4477 transitions. [2022-11-03 04:01:16,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 86 states. [2022-11-03 04:01:16,705 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 16.107142857142858) internal successors, (451), 28 states have internal predecessors, (451), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) Word has length 154 [2022-11-03 04:01:16,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:16,711 INFO L225 Difference]: With dead ends: 3173 [2022-11-03 04:01:16,711 INFO L226 Difference]: Without dead ends: 2962 [2022-11-03 04:01:16,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 752 GetRequests, 635 SyntacticMatches, 0 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3037 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=2678, Invalid=11364, Unknown=0, NotChecked=0, Total=14042 [2022-11-03 04:01:16,717 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 3140 mSDsluCounter, 8677 mSDsCounter, 0 mSdLazyCounter, 2636 mSolverCounterSat, 275 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3140 SdHoareTripleChecker+Valid, 9408 SdHoareTripleChecker+Invalid, 3365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 275 IncrementalHoareTripleChecker+Valid, 2636 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 454 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:16,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3140 Valid, 9408 Invalid, 3365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [275 Valid, 2636 Invalid, 0 Unknown, 454 Unchecked, 3.4s Time] [2022-11-03 04:01:16,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2962 states. [2022-11-03 04:01:16,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2962 to 642. [2022-11-03 04:01:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 642 states, 625 states have (on average 1.3616) internal successors, (851), 625 states have internal predecessors, (851), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 04:01:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 642 states to 642 states and 881 transitions. [2022-11-03 04:01:16,834 INFO L78 Accepts]: Start accepts. Automaton has 642 states and 881 transitions. Word has length 154 [2022-11-03 04:01:16,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:16,835 INFO L495 AbstractCegarLoop]: Abstraction has 642 states and 881 transitions. [2022-11-03 04:01:16,842 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 16.107142857142858) internal successors, (451), 28 states have internal predecessors, (451), 8 states have call successors, (24), 1 states have call predecessors, (24), 1 states have return successors, (24), 8 states have call predecessors, (24), 8 states have call successors, (24) [2022-11-03 04:01:16,842 INFO L276 IsEmpty]: Start isEmpty. Operand 642 states and 881 transitions. [2022-11-03 04:01:16,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:16,845 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:16,846 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:16,874 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (29)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:17,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:17,282 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (30)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:17,468 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,31 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,30 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:17,468 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:17,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:17,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2080976673, now seen corresponding path program 1 times [2022-11-03 04:01:17,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:17,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [213835018] [2022-11-03 04:01:17,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:17,470 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:17,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:17,471 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:17,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Waiting until timeout for monitored process [2022-11-03 04:01:17,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:17,917 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:17,921 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:18,145 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-03 04:01:18,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:18,501 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 15 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-11-03 04:01:18,502 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [213835018] [2022-11-03 04:01:18,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [213835018] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:18,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1162794267] [2022-11-03 04:01:18,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:18,502 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:18,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:18,504 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:18,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Waiting until timeout for monitored process [2022-11-03 04:01:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:19,133 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:19,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:19,272 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:19,272 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:19,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1162794267] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:19,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:19,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 14 [2022-11-03 04:01:19,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215277423] [2022-11-03 04:01:19,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:19,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:19,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:19,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:19,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:01:19,275 INFO L87 Difference]: Start difference. First operand 642 states and 881 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:19,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:19,536 INFO L93 Difference]: Finished difference Result 1356 states and 1896 transitions. [2022-11-03 04:01:19,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:19,537 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:19,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:19,541 INFO L225 Difference]: With dead ends: 1356 [2022-11-03 04:01:19,541 INFO L226 Difference]: Without dead ends: 944 [2022-11-03 04:01:19,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 446 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:01:19,543 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 492 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 601 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:19,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [495 Valid, 601 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:19,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 944 states. [2022-11-03 04:01:19,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 944 to 706. [2022-11-03 04:01:19,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 689 states have (on average 1.362844702467344) internal successors, (939), 689 states have internal predecessors, (939), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 04:01:19,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 969 transitions. [2022-11-03 04:01:19,625 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 969 transitions. Word has length 154 [2022-11-03 04:01:19,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:19,625 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 969 transitions. [2022-11-03 04:01:19,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:19,626 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 969 transitions. [2022-11-03 04:01:19,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:19,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:19,629 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:19,635 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (33)] Ended with exit code 0 [2022-11-03 04:01:19,848 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (32)] Ended with exit code 0 [2022-11-03 04:01:20,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,32 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:20,035 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:20,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:20,036 INFO L85 PathProgramCache]: Analyzing trace with hash -882380379, now seen corresponding path program 1 times [2022-11-03 04:01:20,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:20,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [325881774] [2022-11-03 04:01:20,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:20,037 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:20,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:20,045 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:20,046 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Waiting until timeout for monitored process [2022-11-03 04:01:20,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:20,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:20,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:20,624 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:20,625 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:20,830 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:20,830 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:20,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [325881774] [2022-11-03 04:01:20,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [325881774] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:20,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1356354327] [2022-11-03 04:01:20,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:20,831 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:20,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:20,832 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:20,833 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Waiting until timeout for monitored process [2022-11-03 04:01:21,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:21,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:21,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:21,557 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:21,557 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:21,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1356354327] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:21,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:21,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:21,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [315010821] [2022-11-03 04:01:21,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:21,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:21,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:21,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:21,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:21,560 INFO L87 Difference]: Start difference. First operand 706 states and 969 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:21,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:21,883 INFO L93 Difference]: Finished difference Result 1445 states and 1990 transitions. [2022-11-03 04:01:21,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:21,884 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:21,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:21,887 INFO L225 Difference]: With dead ends: 1445 [2022-11-03 04:01:21,888 INFO L226 Difference]: Without dead ends: 975 [2022-11-03 04:01:21,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:21,890 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 365 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 729 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:21,890 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 729 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:21,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 975 states. [2022-11-03 04:01:21,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 975 to 706. [2022-11-03 04:01:21,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 706 states, 689 states have (on average 1.3584905660377358) internal successors, (936), 689 states have internal predecessors, (936), 15 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2022-11-03 04:01:21,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 706 states to 706 states and 966 transitions. [2022-11-03 04:01:21,969 INFO L78 Accepts]: Start accepts. Automaton has 706 states and 966 transitions. Word has length 154 [2022-11-03 04:01:21,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:21,969 INFO L495 AbstractCegarLoop]: Abstraction has 706 states and 966 transitions. [2022-11-03 04:01:21,970 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:21,970 INFO L276 IsEmpty]: Start isEmpty. Operand 706 states and 966 transitions. [2022-11-03 04:01:21,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:21,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:21,972 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:21,993 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (34)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:22,196 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (35)] Ended with exit code 0 [2022-11-03 04:01:22,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,35 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:22,393 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:22,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:22,393 INFO L85 PathProgramCache]: Analyzing trace with hash -763938905, now seen corresponding path program 1 times [2022-11-03 04:01:22,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:22,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1697762702] [2022-11-03 04:01:22,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:22,394 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:22,395 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:22,395 INFO L229 MonitoredProcess]: Starting monitored process 36 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:22,397 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Waiting until timeout for monitored process [2022-11-03 04:01:22,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:22,863 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:22,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:22,998 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:22,998 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:23,201 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:23,201 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:23,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1697762702] [2022-11-03 04:01:23,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1697762702] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:23,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1689616958] [2022-11-03 04:01:23,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:23,202 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:23,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:23,210 INFO L229 MonitoredProcess]: Starting monitored process 37 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:23,217 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Waiting until timeout for monitored process [2022-11-03 04:01:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:23,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:23,854 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:23,954 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:23,955 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:23,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1689616958] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:23,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:23,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:23,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770393094] [2022-11-03 04:01:23,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:23,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:23,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:23,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:23,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:23,957 INFO L87 Difference]: Start difference. First operand 706 states and 966 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:24,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:24,216 INFO L93 Difference]: Finished difference Result 1031 states and 1418 transitions. [2022-11-03 04:01:24,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:24,217 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:24,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:24,220 INFO L225 Difference]: With dead ends: 1031 [2022-11-03 04:01:24,220 INFO L226 Difference]: Without dead ends: 593 [2022-11-03 04:01:24,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:24,222 INFO L413 NwaCegarLoop]: 347 mSDtfsCounter, 359 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:24,223 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [362 Valid, 731 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:24,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 593 states. [2022-11-03 04:01:24,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 593 to 547. [2022-11-03 04:01:24,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3358348968105065) internal successors, (712), 533 states have internal predecessors, (712), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:24,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 736 transitions. [2022-11-03 04:01:24,306 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 736 transitions. Word has length 154 [2022-11-03 04:01:24,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:24,307 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 736 transitions. [2022-11-03 04:01:24,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:24,307 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 736 transitions. [2022-11-03 04:01:24,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:24,309 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:24,309 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:24,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (36)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:24,532 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (37)] Ended with exit code 0 [2022-11-03 04:01:24,729 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,37 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:24,729 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:24,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:24,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1731752675, now seen corresponding path program 1 times [2022-11-03 04:01:24,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:24,730 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1426334504] [2022-11-03 04:01:24,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:24,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:24,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:24,731 INFO L229 MonitoredProcess]: Starting monitored process 38 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:24,733 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Waiting until timeout for monitored process [2022-11-03 04:01:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:25,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:25,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:25,280 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:25,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:25,482 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:25,482 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:25,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1426334504] [2022-11-03 04:01:25,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1426334504] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:25,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [643656996] [2022-11-03 04:01:25,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:25,482 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:25,483 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:25,484 INFO L229 MonitoredProcess]: Starting monitored process 39 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:25,485 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (39)] Waiting until timeout for monitored process [2022-11-03 04:01:26,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:26,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:26,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:26,228 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:26,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:26,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [643656996] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:26,228 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:26,229 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:26,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672040730] [2022-11-03 04:01:26,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:26,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:26,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:26,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:26,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:26,231 INFO L87 Difference]: Start difference. First operand 547 states and 736 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:26,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:26,523 INFO L93 Difference]: Finished difference Result 1059 states and 1432 transitions. [2022-11-03 04:01:26,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:26,524 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:26,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:26,526 INFO L225 Difference]: With dead ends: 1059 [2022-11-03 04:01:26,526 INFO L226 Difference]: Without dead ends: 787 [2022-11-03 04:01:26,527 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:26,528 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 355 mSDsluCounter, 381 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 724 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:26,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 724 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:26,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 787 states. [2022-11-03 04:01:26,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 787 to 547. [2022-11-03 04:01:26,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3302063789868668) internal successors, (709), 533 states have internal predecessors, (709), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:26,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 733 transitions. [2022-11-03 04:01:26,618 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 733 transitions. Word has length 154 [2022-11-03 04:01:26,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:26,619 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 733 transitions. [2022-11-03 04:01:26,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:26,619 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 733 transitions. [2022-11-03 04:01:26,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:26,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:26,622 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:26,649 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (38)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:26,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (39)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:27,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,39 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:27,044 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:27,044 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:27,044 INFO L85 PathProgramCache]: Analyzing trace with hash -130681569, now seen corresponding path program 1 times [2022-11-03 04:01:27,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:27,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1685001087] [2022-11-03 04:01:27,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:27,046 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:27,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:27,047 INFO L229 MonitoredProcess]: Starting monitored process 40 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:27,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Waiting until timeout for monitored process [2022-11-03 04:01:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:27,496 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:27,499 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:27,641 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:27,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:27,878 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:27,878 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:27,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1685001087] [2022-11-03 04:01:27,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1685001087] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:27,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [399487463] [2022-11-03 04:01:27,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:27,879 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:27,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:27,882 INFO L229 MonitoredProcess]: Starting monitored process 41 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:27,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (41)] Waiting until timeout for monitored process [2022-11-03 04:01:28,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:28,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:28,507 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:28,625 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:28,625 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:28,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [399487463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:28,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:28,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:28,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468748021] [2022-11-03 04:01:28,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:28,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:28,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:28,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:28,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:28,628 INFO L87 Difference]: Start difference. First operand 547 states and 733 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:28,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:28,917 INFO L93 Difference]: Finished difference Result 1047 states and 1410 transitions. [2022-11-03 04:01:28,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:28,918 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:28,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:28,921 INFO L225 Difference]: With dead ends: 1047 [2022-11-03 04:01:28,921 INFO L226 Difference]: Without dead ends: 779 [2022-11-03 04:01:28,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:28,923 INFO L413 NwaCegarLoop]: 341 mSDtfsCounter, 349 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 721 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:28,924 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [352 Valid, 721 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:28,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 779 states. [2022-11-03 04:01:28,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 779 to 547. [2022-11-03 04:01:28,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.324577861163227) internal successors, (706), 533 states have internal predecessors, (706), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:28,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 730 transitions. [2022-11-03 04:01:28,988 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 730 transitions. Word has length 154 [2022-11-03 04:01:28,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:28,988 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 730 transitions. [2022-11-03 04:01:28,989 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:28,989 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 730 transitions. [2022-11-03 04:01:28,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:28,991 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:28,991 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:28,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (41)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:29,224 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (40)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:29,396 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,40 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:29,397 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:29,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:29,397 INFO L85 PathProgramCache]: Analyzing trace with hash -1014190559, now seen corresponding path program 1 times [2022-11-03 04:01:29,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:29,398 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1244160471] [2022-11-03 04:01:29,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:29,398 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:29,398 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:29,399 INFO L229 MonitoredProcess]: Starting monitored process 42 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:29,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Waiting until timeout for monitored process [2022-11-03 04:01:29,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:29,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:29,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:29,941 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:29,941 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:30,153 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:30,153 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:30,153 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1244160471] [2022-11-03 04:01:30,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1244160471] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:30,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1536264105] [2022-11-03 04:01:30,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:30,154 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:30,154 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:30,162 INFO L229 MonitoredProcess]: Starting monitored process 43 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:30,173 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (43)] Waiting until timeout for monitored process [2022-11-03 04:01:30,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:30,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:30,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:30,925 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:30,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:30,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1536264105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:30,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:30,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:30,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017422562] [2022-11-03 04:01:30,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:30,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:30,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:30,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:30,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:30,928 INFO L87 Difference]: Start difference. First operand 547 states and 730 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:31,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:31,191 INFO L93 Difference]: Finished difference Result 1035 states and 1388 transitions. [2022-11-03 04:01:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:31,192 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:31,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:31,194 INFO L225 Difference]: With dead ends: 1035 [2022-11-03 04:01:31,194 INFO L226 Difference]: Without dead ends: 771 [2022-11-03 04:01:31,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:31,195 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 343 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:31,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 718 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:31,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-03 04:01:31,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 547. [2022-11-03 04:01:31,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3189493433395871) internal successors, (703), 533 states have internal predecessors, (703), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:31,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 727 transitions. [2022-11-03 04:01:31,243 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 727 transitions. Word has length 154 [2022-11-03 04:01:31,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:31,244 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 727 transitions. [2022-11-03 04:01:31,244 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:31,245 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 727 transitions. [2022-11-03 04:01:31,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:31,247 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:31,247 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:31,274 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (42)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:31,472 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (43)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:31,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 42 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,43 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:31,669 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:31,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:31,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1784924125, now seen corresponding path program 1 times [2022-11-03 04:01:31,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:31,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1607067896] [2022-11-03 04:01:31,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:31,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:31,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:31,671 INFO L229 MonitoredProcess]: Starting monitored process 44 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:31,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Waiting until timeout for monitored process [2022-11-03 04:01:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:32,099 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:32,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:32,222 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:32,222 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:32,450 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:32,450 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:32,450 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1607067896] [2022-11-03 04:01:32,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1607067896] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:32,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [877540041] [2022-11-03 04:01:32,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:32,451 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:32,451 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:32,452 INFO L229 MonitoredProcess]: Starting monitored process 45 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:32,458 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (45)] Waiting until timeout for monitored process [2022-11-03 04:01:33,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:33,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:33,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:33,220 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:33,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:33,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [877540041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:33,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:33,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:33,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341369625] [2022-11-03 04:01:33,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:33,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:33,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:33,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:33,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:33,223 INFO L87 Difference]: Start difference. First operand 547 states and 727 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:33,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:33,516 INFO L93 Difference]: Finished difference Result 1011 states and 1355 transitions. [2022-11-03 04:01:33,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:33,516 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:33,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:33,518 INFO L225 Difference]: With dead ends: 1011 [2022-11-03 04:01:33,518 INFO L226 Difference]: Without dead ends: 755 [2022-11-03 04:01:33,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:33,520 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 333 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 336 SdHoareTripleChecker+Valid, 717 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:33,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [336 Valid, 717 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:33,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-11-03 04:01:33,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 547. [2022-11-03 04:01:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3133208255159474) internal successors, (700), 533 states have internal predecessors, (700), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:33,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 724 transitions. [2022-11-03 04:01:33,560 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 724 transitions. Word has length 154 [2022-11-03 04:01:33,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:33,560 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 724 transitions. [2022-11-03 04:01:33,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:33,561 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 724 transitions. [2022-11-03 04:01:33,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:33,562 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:33,562 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:33,566 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (45)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:33,776 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (44)] Ended with exit code 0 [2022-11-03 04:01:33,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 45 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,44 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:33,963 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:33,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:33,963 INFO L85 PathProgramCache]: Analyzing trace with hash 1452205093, now seen corresponding path program 1 times [2022-11-03 04:01:33,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:33,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [882742412] [2022-11-03 04:01:33,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:33,964 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:33,964 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:33,965 INFO L229 MonitoredProcess]: Starting monitored process 46 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:33,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Waiting until timeout for monitored process [2022-11-03 04:01:34,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:34,398 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:34,401 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:34,518 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:34,519 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:34,783 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:34,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [882742412] [2022-11-03 04:01:34,784 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [882742412] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:34,784 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [139021785] [2022-11-03 04:01:34,784 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:34,784 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:34,784 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:34,789 INFO L229 MonitoredProcess]: Starting monitored process 47 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:34,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (47)] Waiting until timeout for monitored process [2022-11-03 04:01:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:35,411 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:35,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:35,532 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:35,532 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:35,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [139021785] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:35,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:35,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:35,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928461662] [2022-11-03 04:01:35,533 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:35,534 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:35,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:35,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:35,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:35,535 INFO L87 Difference]: Start difference. First operand 547 states and 724 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:35,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:35,801 INFO L93 Difference]: Finished difference Result 999 states and 1333 transitions. [2022-11-03 04:01:35,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:35,802 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:35,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:35,805 INFO L225 Difference]: With dead ends: 999 [2022-11-03 04:01:35,805 INFO L226 Difference]: Without dead ends: 747 [2022-11-03 04:01:35,806 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:35,806 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 327 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 330 SdHoareTripleChecker+Valid, 714 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:35,807 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [330 Valid, 714 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:35,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 747 states. [2022-11-03 04:01:35,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 747 to 547. [2022-11-03 04:01:35,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3076923076923077) internal successors, (697), 533 states have internal predecessors, (697), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 721 transitions. [2022-11-03 04:01:35,870 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 721 transitions. Word has length 154 [2022-11-03 04:01:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:35,871 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 721 transitions. [2022-11-03 04:01:35,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:35,871 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 721 transitions. [2022-11-03 04:01:35,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:35,873 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:35,874 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:35,878 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (47)] Ended with exit code 0 [2022-11-03 04:01:36,092 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (46)] Ended with exit code 0 [2022-11-03 04:01:36,278 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 47 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,46 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:36,279 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:36,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:36,279 INFO L85 PathProgramCache]: Analyzing trace with hash 1479270695, now seen corresponding path program 1 times [2022-11-03 04:01:36,280 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:36,280 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [622191284] [2022-11-03 04:01:36,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:36,280 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:36,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:36,282 INFO L229 MonitoredProcess]: Starting monitored process 48 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:36,285 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Waiting until timeout for monitored process [2022-11-03 04:01:36,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:36,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:36,722 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:36,852 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:36,852 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:37,065 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:37,065 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:37,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [622191284] [2022-11-03 04:01:37,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [622191284] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:37,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [395758755] [2022-11-03 04:01:37,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:37,066 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:37,066 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:37,068 INFO L229 MonitoredProcess]: Starting monitored process 49 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:37,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (49)] Waiting until timeout for monitored process [2022-11-03 04:01:37,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:37,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:37,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:37,884 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:37,884 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:37,884 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [395758755] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:37,884 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:37,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:37,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793150142] [2022-11-03 04:01:37,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:37,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:37,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:37,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:37,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:37,887 INFO L87 Difference]: Start difference. First operand 547 states and 721 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:38,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:38,167 INFO L93 Difference]: Finished difference Result 993 states and 1320 transitions. [2022-11-03 04:01:38,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:38,168 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:38,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:38,170 INFO L225 Difference]: With dead ends: 993 [2022-11-03 04:01:38,170 INFO L226 Difference]: Without dead ends: 743 [2022-11-03 04:01:38,171 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:38,171 INFO L413 NwaCegarLoop]: 336 mSDtfsCounter, 319 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:38,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 715 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:38,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-03 04:01:38,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 547. [2022-11-03 04:01:38,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.3039399624765478) internal successors, (695), 533 states have internal predecessors, (695), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:38,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 719 transitions. [2022-11-03 04:01:38,231 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 719 transitions. Word has length 154 [2022-11-03 04:01:38,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:38,232 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 719 transitions. [2022-11-03 04:01:38,232 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:38,232 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 719 transitions. [2022-11-03 04:01:38,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:38,234 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:38,235 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:38,240 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (49)] Ended with exit code 0 [2022-11-03 04:01:38,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (48)] Ended with exit code 0 [2022-11-03 04:01:38,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 49 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,48 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:38,640 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:38,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:38,641 INFO L85 PathProgramCache]: Analyzing trace with hash -431771863, now seen corresponding path program 1 times [2022-11-03 04:01:38,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:38,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [249305201] [2022-11-03 04:01:38,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:38,642 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:38,642 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:38,643 INFO L229 MonitoredProcess]: Starting monitored process 50 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:38,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Waiting until timeout for monitored process [2022-11-03 04:01:39,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:39,124 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:39,127 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:39,243 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:39,244 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:39,454 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:39,454 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:39,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [249305201] [2022-11-03 04:01:39,455 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [249305201] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:39,455 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1984920338] [2022-11-03 04:01:39,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:39,455 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:39,456 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:39,457 INFO L229 MonitoredProcess]: Starting monitored process 51 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:39,459 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (51)] Waiting until timeout for monitored process [2022-11-03 04:01:40,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:40,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:40,123 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:40,267 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:40,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:40,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1984920338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:40,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:40,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:40,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1412358979] [2022-11-03 04:01:40,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:40,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:40,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:40,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:40,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:40,270 INFO L87 Difference]: Start difference. First operand 547 states and 719 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:40,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:40,554 INFO L93 Difference]: Finished difference Result 993 states and 1314 transitions. [2022-11-03 04:01:40,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:40,555 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:40,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:40,558 INFO L225 Difference]: With dead ends: 993 [2022-11-03 04:01:40,558 INFO L226 Difference]: Without dead ends: 743 [2022-11-03 04:01:40,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:40,559 INFO L413 NwaCegarLoop]: 332 mSDtfsCounter, 315 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 318 SdHoareTripleChecker+Valid, 708 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:40,560 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [318 Valid, 708 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:40,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-03 04:01:40,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 547. [2022-11-03 04:01:40,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.300187617260788) internal successors, (693), 533 states have internal predecessors, (693), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:40,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 717 transitions. [2022-11-03 04:01:40,602 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 717 transitions. Word has length 154 [2022-11-03 04:01:40,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:40,602 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 717 transitions. [2022-11-03 04:01:40,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:40,603 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 717 transitions. [2022-11-03 04:01:40,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:40,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:40,605 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:40,656 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (50)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:40,831 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (51)] Ended with exit code 0 [2022-11-03 04:01:41,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 50 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,51 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:41,028 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:41,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:41,029 INFO L85 PathProgramCache]: Analyzing trace with hash -924398037, now seen corresponding path program 1 times [2022-11-03 04:01:41,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:41,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2101666559] [2022-11-03 04:01:41,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:41,030 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:41,030 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:41,031 INFO L229 MonitoredProcess]: Starting monitored process 52 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:41,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Waiting until timeout for monitored process [2022-11-03 04:01:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:41,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:41,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:41,633 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:41,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:41,840 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:41,840 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:41,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2101666559] [2022-11-03 04:01:41,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2101666559] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:41,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [481086548] [2022-11-03 04:01:41,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:41,841 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:41,841 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:41,842 INFO L229 MonitoredProcess]: Starting monitored process 53 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:41,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (53)] Waiting until timeout for monitored process [2022-11-03 04:01:42,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:42,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:42,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:42,672 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:42,673 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:42,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [481086548] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:42,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:42,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:42,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415588007] [2022-11-03 04:01:42,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:42,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:42,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:42,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:42,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:42,676 INFO L87 Difference]: Start difference. First operand 547 states and 717 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:42,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:42,979 INFO L93 Difference]: Finished difference Result 993 states and 1308 transitions. [2022-11-03 04:01:42,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:42,980 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:42,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:42,982 INFO L225 Difference]: With dead ends: 993 [2022-11-03 04:01:42,982 INFO L226 Difference]: Without dead ends: 743 [2022-11-03 04:01:42,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:42,984 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 311 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 314 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:42,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [314 Valid, 705 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:42,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 743 states. [2022-11-03 04:01:43,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 743 to 547. [2022-11-03 04:01:43,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 533 states have (on average 1.296435272045028) internal successors, (691), 533 states have internal predecessors, (691), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:43,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 715 transitions. [2022-11-03 04:01:43,041 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 715 transitions. Word has length 154 [2022-11-03 04:01:43,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:43,041 INFO L495 AbstractCegarLoop]: Abstraction has 547 states and 715 transitions. [2022-11-03 04:01:43,041 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:43,042 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 715 transitions. [2022-11-03 04:01:43,043 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:43,043 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:43,043 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:43,060 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (52)] Ended with exit code 0 [2022-11-03 04:01:43,248 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (53)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:43,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 52 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,53 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:43,444 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:43,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:43,445 INFO L85 PathProgramCache]: Analyzing trace with hash -2140551763, now seen corresponding path program 1 times [2022-11-03 04:01:43,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:43,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1667781826] [2022-11-03 04:01:43,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:43,446 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:43,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:43,448 INFO L229 MonitoredProcess]: Starting monitored process 54 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:43,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Waiting until timeout for monitored process [2022-11-03 04:01:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:43,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:43,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:44,018 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:44,224 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:44,224 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:44,224 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1667781826] [2022-11-03 04:01:44,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1667781826] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:44,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1035459854] [2022-11-03 04:01:44,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:44,225 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:44,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:44,226 INFO L229 MonitoredProcess]: Starting monitored process 55 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:44,227 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (55)] Waiting until timeout for monitored process [2022-11-03 04:01:44,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:44,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:44,878 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:45,046 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:45,046 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:45,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1035459854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:45,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:45,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:45,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399583863] [2022-11-03 04:01:45,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:45,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:45,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:45,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:45,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:45,050 INFO L87 Difference]: Start difference. First operand 547 states and 715 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:45,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:45,349 INFO L93 Difference]: Finished difference Result 999 states and 1312 transitions. [2022-11-03 04:01:45,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:45,349 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:45,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:45,351 INFO L225 Difference]: With dead ends: 999 [2022-11-03 04:01:45,351 INFO L226 Difference]: Without dead ends: 749 [2022-11-03 04:01:45,352 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:45,352 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 301 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 304 SdHoareTripleChecker+Valid, 704 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:45,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [304 Valid, 704 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:45,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-11-03 04:01:45,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 551. [2022-11-03 04:01:45,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 537 states have (on average 1.2905027932960893) internal successors, (693), 537 states have internal predecessors, (693), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:45,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 717 transitions. [2022-11-03 04:01:45,412 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 717 transitions. Word has length 154 [2022-11-03 04:01:45,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:45,412 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 717 transitions. [2022-11-03 04:01:45,412 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:45,413 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 717 transitions. [2022-11-03 04:01:45,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:45,415 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:45,415 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:45,426 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (55)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:45,636 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (54)] Ended with exit code 0 [2022-11-03 04:01:45,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 55 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,54 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:45,821 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:45,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:45,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1579851985, now seen corresponding path program 1 times [2022-11-03 04:01:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:45,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1613237206] [2022-11-03 04:01:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:45,823 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:45,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:45,824 INFO L229 MonitoredProcess]: Starting monitored process 56 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:45,825 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Waiting until timeout for monitored process [2022-11-03 04:01:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:46,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:46,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:46,415 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:46,415 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:46,630 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:46,630 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:46,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1613237206] [2022-11-03 04:01:46,630 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1613237206] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:46,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1955820070] [2022-11-03 04:01:46,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:46,630 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:46,631 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:46,632 INFO L229 MonitoredProcess]: Starting monitored process 57 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:46,633 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (57)] Waiting until timeout for monitored process [2022-11-03 04:01:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:47,300 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:47,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:47,463 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:47,463 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:47,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1955820070] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:47,464 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:47,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:47,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208091716] [2022-11-03 04:01:47,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:47,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:47,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:47,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:47,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:47,466 INFO L87 Difference]: Start difference. First operand 551 states and 717 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:47,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:47,783 INFO L93 Difference]: Finished difference Result 1007 states and 1312 transitions. [2022-11-03 04:01:47,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:47,783 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:47,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:47,798 INFO L225 Difference]: With dead ends: 1007 [2022-11-03 04:01:47,799 INFO L226 Difference]: Without dead ends: 757 [2022-11-03 04:01:47,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:47,801 INFO L413 NwaCegarLoop]: 329 mSDtfsCounter, 293 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 296 SdHoareTripleChecker+Valid, 705 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:47,801 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [296 Valid, 705 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:47,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-11-03 04:01:47,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 555. [2022-11-03 04:01:47,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 555 states, 541 states have (on average 1.2846580406654344) internal successors, (695), 541 states have internal predecessors, (695), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:47,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 555 states to 555 states and 719 transitions. [2022-11-03 04:01:47,853 INFO L78 Accepts]: Start accepts. Automaton has 555 states and 719 transitions. Word has length 154 [2022-11-03 04:01:47,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:47,853 INFO L495 AbstractCegarLoop]: Abstraction has 555 states and 719 transitions. [2022-11-03 04:01:47,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:47,854 INFO L276 IsEmpty]: Start isEmpty. Operand 555 states and 719 transitions. [2022-11-03 04:01:47,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:47,855 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:47,855 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:47,870 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (56)] Ended with exit code 0 [2022-11-03 04:01:48,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (57)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:48,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 56 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,57 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:48,262 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:48,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:48,262 INFO L85 PathProgramCache]: Analyzing trace with hash -193066575, now seen corresponding path program 1 times [2022-11-03 04:01:48,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:48,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1728080624] [2022-11-03 04:01:48,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:48,263 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:48,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:48,264 INFO L229 MonitoredProcess]: Starting monitored process 58 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:48,265 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Waiting until timeout for monitored process [2022-11-03 04:01:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:48,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:48,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:48,814 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:48,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:49,026 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:49,026 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:49,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1728080624] [2022-11-03 04:01:49,026 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1728080624] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:49,026 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1009448683] [2022-11-03 04:01:49,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:49,027 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:49,027 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:49,028 INFO L229 MonitoredProcess]: Starting monitored process 59 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:49,029 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (59)] Waiting until timeout for monitored process [2022-11-03 04:01:49,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:49,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:49,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:49,903 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:49,903 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:49,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1009448683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:49,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:49,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:49,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587711174] [2022-11-03 04:01:49,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:49,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:49,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:49,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:49,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:49,906 INFO L87 Difference]: Start difference. First operand 555 states and 719 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:50,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:50,223 INFO L93 Difference]: Finished difference Result 1015 states and 1312 transitions. [2022-11-03 04:01:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:50,224 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:50,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:50,227 INFO L225 Difference]: With dead ends: 1015 [2022-11-03 04:01:50,227 INFO L226 Difference]: Without dead ends: 765 [2022-11-03 04:01:50,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:50,229 INFO L413 NwaCegarLoop]: 325 mSDtfsCounter, 289 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 698 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:50,229 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 698 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:50,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-11-03 04:01:50,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 559. [2022-11-03 04:01:50,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 559 states, 545 states have (on average 1.2788990825688074) internal successors, (697), 545 states have internal predecessors, (697), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:50,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 559 states to 559 states and 721 transitions. [2022-11-03 04:01:50,304 INFO L78 Accepts]: Start accepts. Automaton has 559 states and 721 transitions. Word has length 154 [2022-11-03 04:01:50,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:50,305 INFO L495 AbstractCegarLoop]: Abstraction has 559 states and 721 transitions. [2022-11-03 04:01:50,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:50,305 INFO L276 IsEmpty]: Start isEmpty. Operand 559 states and 721 transitions. [2022-11-03 04:01:50,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:50,307 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:50,307 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:50,312 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (59)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:50,525 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (58)] Ended with exit code 0 [2022-11-03 04:01:50,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 59 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,58 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:50,713 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:50,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:50,713 INFO L85 PathProgramCache]: Analyzing trace with hash 2073314611, now seen corresponding path program 1 times [2022-11-03 04:01:50,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:50,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [524617706] [2022-11-03 04:01:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:50,714 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:50,715 INFO L229 MonitoredProcess]: Starting monitored process 60 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:50,716 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Waiting until timeout for monitored process [2022-11-03 04:01:51,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:51,175 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:51,178 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:51,309 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:51,542 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:51,542 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [524617706] [2022-11-03 04:01:51,542 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [524617706] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:51,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1563742943] [2022-11-03 04:01:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:51,543 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:51,543 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:51,544 INFO L229 MonitoredProcess]: Starting monitored process 61 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:51,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Waiting until timeout for monitored process [2022-11-03 04:01:52,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:52,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-03 04:01:52,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:52,422 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-11-03 04:01:52,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-03 04:01:52,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1563742943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 04:01:52,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:01:52,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8, 8] total 16 [2022-11-03 04:01:52,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154811522] [2022-11-03 04:01:52,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:01:52,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:01:52,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:52,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:01:52,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2022-11-03 04:01:52,426 INFO L87 Difference]: Start difference. First operand 559 states and 721 transitions. Second operand has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:52,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:52,759 INFO L93 Difference]: Finished difference Result 1021 states and 1308 transitions. [2022-11-03 04:01:52,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:01:52,760 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 154 [2022-11-03 04:01:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:52,762 INFO L225 Difference]: With dead ends: 1021 [2022-11-03 04:01:52,762 INFO L226 Difference]: Without dead ends: 771 [2022-11-03 04:01:52,763 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 444 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:01:52,764 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 283 mSDsluCounter, 372 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 286 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:52,764 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [286 Valid, 695 Invalid, 129 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-03 04:01:52,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 771 states. [2022-11-03 04:01:52,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 771 to 563. [2022-11-03 04:01:52,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 563 states, 549 states have (on average 1.2768670309653916) internal successors, (701), 549 states have internal predecessors, (701), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:52,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 563 states to 563 states and 725 transitions. [2022-11-03 04:01:52,832 INFO L78 Accepts]: Start accepts. Automaton has 563 states and 725 transitions. Word has length 154 [2022-11-03 04:01:52,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:52,833 INFO L495 AbstractCegarLoop]: Abstraction has 563 states and 725 transitions. [2022-11-03 04:01:52,833 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.0) internal successors, (130), 5 states have internal predecessors, (130), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:01:52,833 INFO L276 IsEmpty]: Start isEmpty. Operand 563 states and 725 transitions. [2022-11-03 04:01:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-11-03 04:01:52,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:52,835 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:52,842 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (61)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:53,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (60)] Forceful destruction successful, exit code 0 [2022-11-03 04:01:53,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 61 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,60 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:01:53,249 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:01:53,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:01:53,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1720226229, now seen corresponding path program 1 times [2022-11-03 04:01:53,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:01:53,250 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1830667767] [2022-11-03 04:01:53,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:53,250 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:01:53,250 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:01:53,251 INFO L229 MonitoredProcess]: Starting monitored process 62 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:01:53,253 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Waiting until timeout for monitored process [2022-11-03 04:01:53,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:53,732 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:53,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:53,855 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:53,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:54,065 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:54,066 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:01:54,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1830667767] [2022-11-03 04:01:54,066 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1830667767] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:54,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1076330364] [2022-11-03 04:01:54,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:54,067 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:01:54,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:01:54,068 INFO L229 MonitoredProcess]: Starting monitored process 63 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:01:54,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Waiting until timeout for monitored process [2022-11-03 04:01:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:54,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 42 conjunts are in the unsatisfiable core [2022-11-03 04:01:54,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:56,873 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 31 proven. 1 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-03 04:01:56,873 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:57,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1076330364] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:01:57,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [84356050] [2022-11-03 04:01:57,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:01:57,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:01:57,337 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:01:57,338 INFO L229 MonitoredProcess]: Starting monitored process 64 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:01:57,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Waiting until timeout for monitored process [2022-11-03 04:01:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:01:57,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 862 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:01:57,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:01:58,046 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 46 proven. 6 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2022-11-03 04:01:58,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:01:58,382 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-11-03 04:01:58,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [84356050] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:01:58,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 5 imperfect interpolant sequences. [2022-11-03 04:01:58,382 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 16, 10, 10] total 35 [2022-11-03 04:01:58,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477664654] [2022-11-03 04:01:58,383 INFO L85 oduleStraightlineAll]: Using 5 imperfect interpolants to construct interpolant automaton [2022-11-03 04:01:58,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 04:01:58,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:01:58,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 04:01:58,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=1516, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 04:01:58,386 INFO L87 Difference]: Start difference. First operand 563 states and 725 transitions. Second operand has 35 states, 31 states have (on average 8.290322580645162) internal successors, (257), 35 states have internal predecessors, (257), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-03 04:01:59,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:01:59,703 INFO L93 Difference]: Finished difference Result 953 states and 1216 transitions. [2022-11-03 04:01:59,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-03 04:01:59,703 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 31 states have (on average 8.290322580645162) internal successors, (257), 35 states have internal predecessors, (257), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) Word has length 154 [2022-11-03 04:01:59,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:01:59,705 INFO L225 Difference]: With dead ends: 953 [2022-11-03 04:01:59,705 INFO L226 Difference]: Without dead ends: 627 [2022-11-03 04:01:59,707 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 799 GetRequests, 751 SyntacticMatches, 3 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 449 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=222, Invalid=1940, Unknown=0, NotChecked=0, Total=2162 [2022-11-03 04:01:59,708 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 1377 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 564 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 3258 SdHoareTripleChecker+Invalid, 1165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:01:59,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 3258 Invalid, 1165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 564 Invalid, 0 Unknown, 582 Unchecked, 0.8s Time] [2022-11-03 04:01:59,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 627 states. [2022-11-03 04:01:59,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 627 to 487. [2022-11-03 04:01:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 473 states have (on average 1.291754756871036) internal successors, (611), 473 states have internal predecessors, (611), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:01:59,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 635 transitions. [2022-11-03 04:01:59,776 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 635 transitions. Word has length 154 [2022-11-03 04:01:59,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:01:59,776 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 635 transitions. [2022-11-03 04:01:59,777 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 31 states have (on average 8.290322580645162) internal successors, (257), 35 states have internal predecessors, (257), 11 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (24), 7 states have call predecessors, (24), 11 states have call successors, (24) [2022-11-03 04:01:59,777 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 635 transitions. [2022-11-03 04:01:59,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:01:59,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:01:59,780 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:01:59,789 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (63)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:00,001 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (62)] Ended with exit code 0 [2022-11-03 04:02:00,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (64)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:00,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 63 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,62 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,64 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:00,389 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:00,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash 1946513426, now seen corresponding path program 1 times [2022-11-03 04:02:00,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:00,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1150808182] [2022-11-03 04:02:00,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:00,391 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:00,391 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:00,392 INFO L229 MonitoredProcess]: Starting monitored process 65 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:00,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Waiting until timeout for monitored process [2022-11-03 04:02:00,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:01,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:02:01,040 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:01,240 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 8 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 04:02:01,240 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:01,425 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 127 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-03 04:02:01,426 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:01,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1150808182] [2022-11-03 04:02:01,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1150808182] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:01,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [213799507] [2022-11-03 04:02:01,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:01,427 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:02:01,427 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:02:01,429 INFO L229 MonitoredProcess]: Starting monitored process 66 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:02:01,431 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Waiting until timeout for monitored process [2022-11-03 04:02:02,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:02,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:02:02,357 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:02,525 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 8 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 04:02:02,525 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:02,718 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 127 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-03 04:02:02,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [213799507] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:02,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [830610534] [2022-11-03 04:02:02,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:02,719 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:02,719 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:02,720 INFO L229 MonitoredProcess]: Starting monitored process 67 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:02,721 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Waiting until timeout for monitored process [2022-11-03 04:02:03,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:03,262 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-03 04:02:03,266 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:03,428 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 8 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-11-03 04:02:03,428 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:03,627 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 127 proven. 8 refuted. 0 times theorem prover too weak. 168 trivial. 0 not checked. [2022-11-03 04:02:03,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [830610534] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:02:03,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:02:03,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6, 6, 6, 6] total 6 [2022-11-03 04:02:03,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976843510] [2022-11-03 04:02:03,628 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:03,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:02:03,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:03,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:02:03,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 04:02:03,631 INFO L87 Difference]: Start difference. First operand 487 states and 635 transitions. Second operand has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 04:02:03,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:03,836 INFO L93 Difference]: Finished difference Result 749 states and 965 transitions. [2022-11-03 04:02:03,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:03,837 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 261 [2022-11-03 04:02:03,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:03,839 INFO L225 Difference]: With dead ends: 749 [2022-11-03 04:02:03,839 INFO L226 Difference]: Without dead ends: 495 [2022-11-03 04:02:03,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1563 GetRequests, 1556 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-03 04:02:03,841 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 399 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 399 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:03,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [399 Valid, 695 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-03 04:02:03,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-03 04:02:03,911 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 487. [2022-11-03 04:02:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 487 states, 473 states have (on average 1.285412262156448) internal successors, (608), 473 states have internal predecessors, (608), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:02:03,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 487 states to 487 states and 632 transitions. [2022-11-03 04:02:03,913 INFO L78 Accepts]: Start accepts. Automaton has 487 states and 632 transitions. Word has length 261 [2022-11-03 04:02:03,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:03,914 INFO L495 AbstractCegarLoop]: Abstraction has 487 states and 632 transitions. [2022-11-03 04:02:03,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 34.5) internal successors, (207), 6 states have internal predecessors, (207), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-03 04:02:03,915 INFO L276 IsEmpty]: Start isEmpty. Operand 487 states and 632 transitions. [2022-11-03 04:02:03,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:02:03,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:03,917 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:02:03,966 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (67)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:04,153 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (65)] Ended with exit code 0 [2022-11-03 04:02:04,338 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (66)] Ended with exit code 0 [2022-11-03 04:02:04,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 67 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,65 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,66 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:02:04,534 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:04,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:04,534 INFO L85 PathProgramCache]: Analyzing trace with hash -1984987372, now seen corresponding path program 2 times [2022-11-03 04:02:04,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:04,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [468479290] [2022-11-03 04:02:04,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:02:04,535 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:04,536 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:04,537 INFO L229 MonitoredProcess]: Starting monitored process 68 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:04,567 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Waiting until timeout for monitored process [2022-11-03 04:02:05,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 04:02:05,171 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:02:05,207 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:02:05,211 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:05,924 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 04:02:05,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:05,995 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:05,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [468479290] [2022-11-03 04:02:05,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [468479290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:05,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [797120145] [2022-11-03 04:02:05,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:02:05,996 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:02:05,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:02:05,997 INFO L229 MonitoredProcess]: Starting monitored process 69 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:02:05,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (69)] Waiting until timeout for monitored process [2022-11-03 04:02:07,218 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-03 04:02:07,218 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:02:07,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:02:07,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:07,622 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 197 proven. 1 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-11-03 04:02:07,622 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:07,781 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2022-11-03 04:02:07,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [797120145] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:07,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:02:07,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:02:07,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247320430] [2022-11-03 04:02:07,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:02:07,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:02:07,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:07,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:02:07,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:02:07,783 INFO L87 Difference]: Start difference. First operand 487 states and 632 transitions. Second operand has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:02:07,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:02:07,913 INFO L93 Difference]: Finished difference Result 847 states and 1083 transitions. [2022-11-03 04:02:07,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:02:07,917 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:02:07,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:02:07,920 INFO L225 Difference]: With dead ends: 847 [2022-11-03 04:02:07,920 INFO L226 Difference]: Without dead ends: 597 [2022-11-03 04:02:07,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:02:07,922 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 130 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 642 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:02:07,923 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 642 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 59 Unchecked, 0.0s Time] [2022-11-03 04:02:07,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 597 states. [2022-11-03 04:02:07,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 597 to 491. [2022-11-03 04:02:07,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 491 states, 477 states have (on average 1.2830188679245282) internal successors, (612), 477 states have internal predecessors, (612), 12 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2022-11-03 04:02:07,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 491 states to 491 states and 636 transitions. [2022-11-03 04:02:07,984 INFO L78 Accepts]: Start accepts. Automaton has 491 states and 636 transitions. Word has length 261 [2022-11-03 04:02:07,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:02:07,985 INFO L495 AbstractCegarLoop]: Abstraction has 491 states and 636 transitions. [2022-11-03 04:02:07,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 40.2) internal successors, (201), 5 states have internal predecessors, (201), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:02:07,985 INFO L276 IsEmpty]: Start isEmpty. Operand 491 states and 636 transitions. [2022-11-03 04:02:07,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:02:07,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:02:07,988 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:02:07,997 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (69)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:08,216 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (68)] Forceful destruction successful, exit code 0 [2022-11-03 04:02:08,397 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 69 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,68 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:02:08,398 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:02:08,398 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:02:08,398 INFO L85 PathProgramCache]: Analyzing trace with hash 63925392, now seen corresponding path program 1 times [2022-11-03 04:02:08,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:02:08,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [66460027] [2022-11-03 04:02:08,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:08,400 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:02:08,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:02:08,402 INFO L229 MonitoredProcess]: Starting monitored process 70 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:02:08,438 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Waiting until timeout for monitored process [2022-11-03 04:02:09,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:09,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:02:09,053 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:09,757 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 14 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-11-03 04:02:09,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:09,839 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:02:09,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [66460027] [2022-11-03 04:02:09,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [66460027] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:09,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [339307294] [2022-11-03 04:02:09,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:09,840 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:02:09,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:02:09,841 INFO L229 MonitoredProcess]: Starting monitored process 71 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:02:09,867 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (71)] Waiting until timeout for monitored process [2022-11-03 04:02:11,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:11,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 04:02:11,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:13,272 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:02:13,273 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:13,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [339307294] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:13,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1551458199] [2022-11-03 04:02:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:02:13,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:02:13,876 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:02:13,877 INFO L229 MonitoredProcess]: Starting monitored process 72 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:02:13,878 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Waiting until timeout for monitored process [2022-11-03 04:02:14,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:02:14,472 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:02:14,479 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:02:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 13 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:02:15,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:02:16,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1551458199] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:02:16,382 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:02:16,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 7] total 32 [2022-11-03 04:02:16,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750425913] [2022-11-03 04:02:16,383 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:02:16,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-11-03 04:02:16,384 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:02:16,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-11-03 04:02:16,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=1626, Unknown=0, NotChecked=0, Total=1722 [2022-11-03 04:02:16,389 INFO L87 Difference]: Start difference. First operand 491 states and 636 transitions. Second operand has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 04:04:12,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:12,996 INFO L93 Difference]: Finished difference Result 11894 states and 15190 transitions. [2022-11-03 04:04:12,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 420 states. [2022-11-03 04:04:12,997 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 261 [2022-11-03 04:04:12,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:13,011 INFO L225 Difference]: With dead ends: 11894 [2022-11-03 04:04:13,011 INFO L226 Difference]: Without dead ends: 11445 [2022-11-03 04:04:13,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1558 GetRequests, 1103 SyntacticMatches, 0 SemanticMatches, 455 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85518 ImplicationChecksByTransitivity, 103.8s TimeCoverageRelationStatistics Valid=21078, Invalid=187314, Unknown=0, NotChecked=0, Total=208392 [2022-11-03 04:04:13,037 INFO L413 NwaCegarLoop]: 1334 mSDtfsCounter, 11243 mSDsluCounter, 27097 mSDsCounter, 0 mSdLazyCounter, 8032 mSolverCounterSat, 1272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11249 SdHoareTripleChecker+Valid, 28431 SdHoareTripleChecker+Invalid, 14466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 8032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5162 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:13,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11249 Valid, 28431 Invalid, 14466 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1272 Valid, 8032 Invalid, 0 Unknown, 5162 Unchecked, 12.0s Time] [2022-11-03 04:04:13,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11445 states. [2022-11-03 04:04:13,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11445 to 2123. [2022-11-03 04:04:13,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2123 states, 2085 states have (on average 1.2695443645083933) internal successors, (2647), 2085 states have internal predecessors, (2647), 36 states have call successors, (36), 1 states have call predecessors, (36), 1 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-11-03 04:04:13,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2123 states to 2123 states and 2719 transitions. [2022-11-03 04:04:13,323 INFO L78 Accepts]: Start accepts. Automaton has 2123 states and 2719 transitions. Word has length 261 [2022-11-03 04:04:13,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:13,324 INFO L495 AbstractCegarLoop]: Abstraction has 2123 states and 2719 transitions. [2022-11-03 04:04:13,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 16.6875) internal successors, (534), 32 states have internal predecessors, (534), 7 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 04:04:13,324 INFO L276 IsEmpty]: Start isEmpty. Operand 2123 states and 2719 transitions. [2022-11-03 04:04:13,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:04:13,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:13,329 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:04:13,345 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (71)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:13,570 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (72)] Ended with exit code 0 [2022-11-03 04:04:13,762 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (70)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:13,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 71 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,72 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,70 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:13,941 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:13,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:13,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1758483730, now seen corresponding path program 1 times [2022-11-03 04:04:13,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:13,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [304148201] [2022-11-03 04:04:13,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:13,944 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:13,944 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:13,945 INFO L229 MonitoredProcess]: Starting monitored process 73 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:13,946 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Waiting until timeout for monitored process [2022-11-03 04:04:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:14,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:04:14,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:15,325 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 18 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-11-03 04:04:15,325 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:15,411 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:15,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [304148201] [2022-11-03 04:04:15,412 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [304148201] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:15,412 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [561520840] [2022-11-03 04:04:15,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:15,412 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:15,412 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:15,413 INFO L229 MonitoredProcess]: Starting monitored process 74 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:15,415 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (74)] Waiting until timeout for monitored process [2022-11-03 04:04:16,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:16,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:04:16,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:17,749 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 197 proven. 34 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:04:17,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:18,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [561520840] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:18,021 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709339509] [2022-11-03 04:04:18,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:18,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:04:18,022 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:04:18,023 INFO L229 MonitoredProcess]: Starting monitored process 75 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:04:18,024 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Waiting until timeout for monitored process [2022-11-03 04:04:18,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:18,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:04:18,553 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:19,919 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 15 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-11-03 04:04:19,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:20,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709339509] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:20,183 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:04:20,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 19 [2022-11-03 04:04:20,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785951250] [2022-11-03 04:04:20,184 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:04:20,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-03 04:04:20,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:20,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-03 04:04:20,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=498, Unknown=0, NotChecked=0, Total=552 [2022-11-03 04:04:20,186 INFO L87 Difference]: Start difference. First operand 2123 states and 2719 transitions. Second operand has 19 states, 19 states have (on average 23.57894736842105) internal successors, (448), 19 states have internal predecessors, (448), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:04:39,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:39,304 INFO L93 Difference]: Finished difference Result 12021 states and 15404 transitions. [2022-11-03 04:04:39,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 105 states. [2022-11-03 04:04:39,305 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 23.57894736842105) internal successors, (448), 19 states have internal predecessors, (448), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 04:04:39,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:39,324 INFO L225 Difference]: With dead ends: 12021 [2022-11-03 04:04:39,325 INFO L226 Difference]: Without dead ends: 9948 [2022-11-03 04:04:39,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1288 GetRequests, 1163 SyntacticMatches, 0 SemanticMatches, 125 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4672 ImplicationChecksByTransitivity, 14.1s TimeCoverageRelationStatistics Valid=3203, Invalid=12799, Unknown=0, NotChecked=0, Total=16002 [2022-11-03 04:04:39,332 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 7550 mSDsluCounter, 6155 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 806 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7550 SdHoareTripleChecker+Valid, 7045 SdHoareTripleChecker+Invalid, 3592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 806 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:39,332 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7550 Valid, 7045 Invalid, 3592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [806 Valid, 2786 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-03 04:04:39,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9948 states. [2022-11-03 04:04:39,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9948 to 2203. [2022-11-03 04:04:39,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2621584066697544) internal successors, (2725), 2159 states have internal predecessors, (2725), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:04:39,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2809 transitions. [2022-11-03 04:04:39,666 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2809 transitions. Word has length 261 [2022-11-03 04:04:39,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:39,667 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2809 transitions. [2022-11-03 04:04:39,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 23.57894736842105) internal successors, (448), 19 states have internal predecessors, (448), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:04:39,668 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2809 transitions. [2022-11-03 04:04:39,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:04:39,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:39,673 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:04:39,719 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (75)] Ended with exit code 0 [2022-11-03 04:04:39,934 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (73)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:40,117 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (74)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:40,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 75 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,73 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,74 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:40,302 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:40,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:40,302 INFO L85 PathProgramCache]: Analyzing trace with hash 2080479002, now seen corresponding path program 1 times [2022-11-03 04:04:40,303 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:40,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1506385160] [2022-11-03 04:04:40,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:40,304 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:40,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:40,305 INFO L229 MonitoredProcess]: Starting monitored process 76 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:40,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Waiting until timeout for monitored process [2022-11-03 04:04:41,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:41,058 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:04:41,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:41,819 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:04:41,819 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:41,904 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1506385160] [2022-11-03 04:04:41,905 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1506385160] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:41,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [924982614] [2022-11-03 04:04:41,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:41,905 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:41,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:41,908 INFO L229 MonitoredProcess]: Starting monitored process 77 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:41,910 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Waiting until timeout for monitored process [2022-11-03 04:04:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:43,248 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:04:43,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:43,618 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:04:43,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:43,771 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:04:43,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [924982614] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:43,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:04:43,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:04:43,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660880726] [2022-11-03 04:04:43,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:43,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:04:43,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:43,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:04:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:04:43,774 INFO L87 Difference]: Start difference. First operand 2203 states and 2809 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:44,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:44,236 INFO L93 Difference]: Finished difference Result 5408 states and 6899 transitions. [2022-11-03 04:04:44,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:04:44,237 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:04:44,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:44,245 INFO L225 Difference]: With dead ends: 5408 [2022-11-03 04:04:44,245 INFO L226 Difference]: Without dead ends: 3674 [2022-11-03 04:04:44,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:04:44,250 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 127 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 130 SdHoareTripleChecker+Valid, 695 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:44,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [130 Valid, 695 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 39 Unchecked, 0.0s Time] [2022-11-03 04:04:44,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2022-11-03 04:04:44,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 2203. [2022-11-03 04:04:44,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2575266327003243) internal successors, (2715), 2159 states have internal predecessors, (2715), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:04:44,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2799 transitions. [2022-11-03 04:04:44,665 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2799 transitions. Word has length 261 [2022-11-03 04:04:44,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:44,666 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2799 transitions. [2022-11-03 04:04:44,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:44,666 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2799 transitions. [2022-11-03 04:04:44,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:04:44,671 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:44,671 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:04:44,691 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (77)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:44,911 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (76)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:45,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 77 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,76 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:45,093 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:45,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:45,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1183447396, now seen corresponding path program 1 times [2022-11-03 04:04:45,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:45,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [540980426] [2022-11-03 04:04:45,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:45,095 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:45,095 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:45,097 INFO L229 MonitoredProcess]: Starting monitored process 78 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:45,133 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Waiting until timeout for monitored process [2022-11-03 04:04:45,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:45,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:04:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:04:46,583 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:46,669 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:46,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [540980426] [2022-11-03 04:04:46,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [540980426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:46,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1217598198] [2022-11-03 04:04:46,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:46,670 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:46,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:46,672 INFO L229 MonitoredProcess]: Starting monitored process 79 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:46,673 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (79)] Waiting until timeout for monitored process [2022-11-03 04:04:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:47,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:04:47,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:48,376 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:04:48,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:48,557 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:04:48,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1217598198] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:48,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:04:48,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:04:48,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406049735] [2022-11-03 04:04:48,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:48,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:04:48,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:48,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:04:48,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:04:48,560 INFO L87 Difference]: Start difference. First operand 2203 states and 2799 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:49,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:49,235 INFO L93 Difference]: Finished difference Result 5356 states and 6813 transitions. [2022-11-03 04:04:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:04:49,236 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:04:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:49,245 INFO L225 Difference]: With dead ends: 5356 [2022-11-03 04:04:49,245 INFO L226 Difference]: Without dead ends: 3626 [2022-11-03 04:04:49,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:04:49,248 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 124 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 531 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:49,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 531 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 35 Unchecked, 0.0s Time] [2022-11-03 04:04:49,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3626 states. [2022-11-03 04:04:49,563 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3626 to 2203. [2022-11-03 04:04:49,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.252894858730894) internal successors, (2705), 2159 states have internal predecessors, (2705), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:04:49,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2789 transitions. [2022-11-03 04:04:49,570 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2789 transitions. Word has length 261 [2022-11-03 04:04:49,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:49,571 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2789 transitions. [2022-11-03 04:04:49,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:49,572 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2789 transitions. [2022-11-03 04:04:49,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:04:49,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:49,577 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:04:49,612 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (78)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:49,811 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (79)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:49,993 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 78 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,79 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:49,993 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:49,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:49,994 INFO L85 PathProgramCache]: Analyzing trace with hash 167937822, now seen corresponding path program 1 times [2022-11-03 04:04:49,995 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:49,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [3207416] [2022-11-03 04:04:49,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:49,995 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:49,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:49,996 INFO L229 MonitoredProcess]: Starting monitored process 80 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:49,998 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Waiting until timeout for monitored process [2022-11-03 04:04:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:50,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:04:50,680 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:51,435 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:04:51,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:51,520 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:51,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [3207416] [2022-11-03 04:04:51,520 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [3207416] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:51,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1347451684] [2022-11-03 04:04:51,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:51,520 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:51,521 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:51,522 INFO L229 MonitoredProcess]: Starting monitored process 81 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:51,525 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Waiting until timeout for monitored process [2022-11-03 04:04:52,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:52,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:04:52,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:53,230 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:04:53,230 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:53,394 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:04:53,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1347451684] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:53,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:04:53,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:04:53,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238639258] [2022-11-03 04:04:53,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:53,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:04:53,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:53,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:04:53,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:04:53,396 INFO L87 Difference]: Start difference. First operand 2203 states and 2789 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:53,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:53,997 INFO L93 Difference]: Finished difference Result 5344 states and 6767 transitions. [2022-11-03 04:04:53,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:04:53,998 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:04:53,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:54,004 INFO L225 Difference]: With dead ends: 5344 [2022-11-03 04:04:54,004 INFO L226 Difference]: Without dead ends: 3618 [2022-11-03 04:04:54,007 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 918 GetRequests, 900 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-11-03 04:04:54,008 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 179 mSDsluCounter, 493 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:54,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 747 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 3 Invalid, 0 Unknown, 78 Unchecked, 0.0s Time] [2022-11-03 04:04:54,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3618 states. [2022-11-03 04:04:54,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3618 to 2203. [2022-11-03 04:04:54,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2482630847614637) internal successors, (2695), 2159 states have internal predecessors, (2695), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:04:54,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2779 transitions. [2022-11-03 04:04:54,313 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2779 transitions. Word has length 261 [2022-11-03 04:04:54,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:54,314 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2779 transitions. [2022-11-03 04:04:54,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:54,315 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2779 transitions. [2022-11-03 04:04:54,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:04:54,319 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:54,320 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:04:54,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (81)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:54,567 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (80)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:54,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 81 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,80 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:04:54,731 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:54,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:54,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1772644192, now seen corresponding path program 1 times [2022-11-03 04:04:54,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:54,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1228951187] [2022-11-03 04:04:54,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:54,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:54,735 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:54,736 INFO L229 MonitoredProcess]: Starting monitored process 82 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:54,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Waiting until timeout for monitored process [2022-11-03 04:04:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:55,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:04:55,459 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:56,203 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:04:56,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:56,285 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:04:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1228951187] [2022-11-03 04:04:56,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1228951187] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:56,285 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [847672860] [2022-11-03 04:04:56,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:56,285 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:56,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:04:56,286 INFO L229 MonitoredProcess]: Starting monitored process 83 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:04:56,289 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (83)] Waiting until timeout for monitored process [2022-11-03 04:04:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:57,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:04:57,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:04:58,039 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:04:58,039 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:04:58,205 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:04:58,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [847672860] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:04:58,206 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:04:58,206 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:04:58,206 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129453369] [2022-11-03 04:04:58,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:04:58,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:04:58,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:04:58,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:04:58,207 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:04:58,207 INFO L87 Difference]: Start difference. First operand 2203 states and 2779 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:58,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:04:58,565 INFO L93 Difference]: Finished difference Result 5252 states and 6641 transitions. [2022-11-03 04:04:58,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:04:58,566 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:04:58,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:04:58,571 INFO L225 Difference]: With dead ends: 5252 [2022-11-03 04:04:58,571 INFO L226 Difference]: Without dead ends: 3530 [2022-11-03 04:04:58,574 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:04:58,575 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 118 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:04:58,575 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 539 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-03 04:04:58,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3530 states. [2022-11-03 04:04:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3530 to 2203. [2022-11-03 04:04:58,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2436313107920334) internal successors, (2685), 2159 states have internal predecessors, (2685), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:04:58,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2769 transitions. [2022-11-03 04:04:58,854 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2769 transitions. Word has length 261 [2022-11-03 04:04:58,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:04:58,855 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2769 transitions. [2022-11-03 04:04:58,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:04:58,855 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2769 transitions. [2022-11-03 04:04:58,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:04:58,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:04:58,859 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:04:58,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (82)] Forceful destruction successful, exit code 0 [2022-11-03 04:04:59,095 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (83)] Ended with exit code 0 [2022-11-03 04:04:59,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 82 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,83 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:04:59,287 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:04:59,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:04:59,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1936046882, now seen corresponding path program 1 times [2022-11-03 04:04:59,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:04:59,289 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1788052673] [2022-11-03 04:04:59,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:04:59,289 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:04:59,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:04:59,290 INFO L229 MonitoredProcess]: Starting monitored process 84 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:04:59,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Waiting until timeout for monitored process [2022-11-03 04:04:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:04:59,963 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:04:59,967 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:00,691 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:05:00,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:00,778 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:00,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1788052673] [2022-11-03 04:05:00,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1788052673] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:00,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1438068742] [2022-11-03 04:05:00,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:00,779 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:00,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:05:00,780 INFO L229 MonitoredProcess]: Starting monitored process 85 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:05:00,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (85)] Waiting until timeout for monitored process [2022-11-03 04:05:02,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:02,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:05:02,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:02,563 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:05:02,563 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:02,759 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:05:02,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1438068742] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:02,760 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:05:02,760 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:05:02,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999211893] [2022-11-03 04:05:02,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:02,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:02,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:02,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:02,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:05:02,761 INFO L87 Difference]: Start difference. First operand 2203 states and 2769 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:05:03,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:03,171 INFO L93 Difference]: Finished difference Result 5200 states and 6546 transitions. [2022-11-03 04:05:03,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:05:03,171 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:05:03,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:03,175 INFO L225 Difference]: With dead ends: 5200 [2022-11-03 04:05:03,175 INFO L226 Difference]: Without dead ends: 3482 [2022-11-03 04:05:03,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:05:03,179 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 117 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:03,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 547 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-03 04:05:03,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3482 states. [2022-11-03 04:05:03,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3482 to 2203. [2022-11-03 04:05:03,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.238999536822603) internal successors, (2675), 2159 states have internal predecessors, (2675), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:05:03,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2759 transitions. [2022-11-03 04:05:03,475 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2759 transitions. Word has length 261 [2022-11-03 04:05:03,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:03,476 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2759 transitions. [2022-11-03 04:05:03,476 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:05:03,476 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2759 transitions. [2022-11-03 04:05:03,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:05:03,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:03,480 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:05:03,490 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (85)] Ended with exit code 0 [2022-11-03 04:05:03,722 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (84)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:03,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 85 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,84 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:03,890 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:03,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:03,890 INFO L85 PathProgramCache]: Analyzing trace with hash -1034064220, now seen corresponding path program 1 times [2022-11-03 04:05:03,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:03,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [536304749] [2022-11-03 04:05:03,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:03,892 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:03,892 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:03,894 INFO L229 MonitoredProcess]: Starting monitored process 86 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:03,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Waiting until timeout for monitored process [2022-11-03 04:05:04,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:04,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:05:04,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:05,734 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:05:05,735 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:05,823 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:05,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [536304749] [2022-11-03 04:05:05,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [536304749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:05,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1141116318] [2022-11-03 04:05:05,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:05,824 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:05,824 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:05:05,825 INFO L229 MonitoredProcess]: Starting monitored process 87 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:05:05,829 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (87)] Waiting until timeout for monitored process [2022-11-03 04:05:07,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:07,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:05:07,140 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:07,617 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:05:07,618 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:07,855 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:05:07,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1141116318] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:07,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:05:07,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:05:07,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541268130] [2022-11-03 04:05:07,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:07,857 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:07,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:07,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:07,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:05:07,858 INFO L87 Difference]: Start difference. First operand 2203 states and 2759 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:05:08,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:08,319 INFO L93 Difference]: Finished difference Result 5148 states and 6460 transitions. [2022-11-03 04:05:08,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:05:08,319 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:05:08,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:08,324 INFO L225 Difference]: With dead ends: 5148 [2022-11-03 04:05:08,324 INFO L226 Difference]: Without dead ends: 3434 [2022-11-03 04:05:08,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:05:08,328 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 114 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 547 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:08,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 547 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 38 Unchecked, 0.0s Time] [2022-11-03 04:05:08,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3434 states. [2022-11-03 04:05:08,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3434 to 2203. [2022-11-03 04:05:08,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2343677628531728) internal successors, (2665), 2159 states have internal predecessors, (2665), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:05:08,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2749 transitions. [2022-11-03 04:05:08,640 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2749 transitions. Word has length 261 [2022-11-03 04:05:08,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:08,641 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2749 transitions. [2022-11-03 04:05:08,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:05:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2749 transitions. [2022-11-03 04:05:08,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:05:08,645 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:08,645 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:05:08,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (86)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:08,879 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (87)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:09,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 86 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,87 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:09,061 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:09,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:09,062 INFO L85 PathProgramCache]: Analyzing trace with hash -793824474, now seen corresponding path program 1 times [2022-11-03 04:05:09,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:09,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2030823368] [2022-11-03 04:05:09,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:09,064 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:09,064 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:09,065 INFO L229 MonitoredProcess]: Starting monitored process 88 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:09,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Waiting until timeout for monitored process [2022-11-03 04:05:09,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:09,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:05:09,808 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:10,573 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:05:10,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:10,663 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:10,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2030823368] [2022-11-03 04:05:10,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2030823368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:10,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1090923707] [2022-11-03 04:05:10,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:10,664 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:10,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:05:10,677 INFO L229 MonitoredProcess]: Starting monitored process 89 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:05:10,693 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Waiting until timeout for monitored process [2022-11-03 04:05:11,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:12,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:05:12,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:12,502 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:05:12,502 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:12,711 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:05:12,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1090923707] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:12,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-03 04:05:12,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 6] total 16 [2022-11-03 04:05:12,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631946539] [2022-11-03 04:05:12,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:05:12,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-03 04:05:12,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:12,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-03 04:05:12,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-11-03 04:05:12,714 INFO L87 Difference]: Start difference. First operand 2203 states and 2749 transitions. Second operand has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:05:13,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:13,094 INFO L93 Difference]: Finished difference Result 5096 states and 6374 transitions. [2022-11-03 04:05:13,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 04:05:13,095 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:05:13,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:13,099 INFO L225 Difference]: With dead ends: 5096 [2022-11-03 04:05:13,099 INFO L226 Difference]: Without dead ends: 3386 [2022-11-03 04:05:13,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 916 GetRequests, 899 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:05:13,101 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 111 mSDsluCounter, 333 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 551 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:13,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 551 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 40 Unchecked, 0.0s Time] [2022-11-03 04:05:13,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3386 states. [2022-11-03 04:05:13,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3386 to 2203. [2022-11-03 04:05:13,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2203 states, 2159 states have (on average 1.2297359888837425) internal successors, (2655), 2159 states have internal predecessors, (2655), 42 states have call successors, (42), 1 states have call predecessors, (42), 1 states have return successors, (42), 42 states have call predecessors, (42), 42 states have call successors, (42) [2022-11-03 04:05:13,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2203 states to 2203 states and 2739 transitions. [2022-11-03 04:05:13,329 INFO L78 Accepts]: Start accepts. Automaton has 2203 states and 2739 transitions. Word has length 261 [2022-11-03 04:05:13,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:13,330 INFO L495 AbstractCegarLoop]: Abstraction has 2203 states and 2739 transitions. [2022-11-03 04:05:13,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 39.2) internal successors, (196), 5 states have internal predecessors, (196), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:05:13,330 INFO L276 IsEmpty]: Start isEmpty. Operand 2203 states and 2739 transitions. [2022-11-03 04:05:13,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:05:13,332 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:13,333 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:05:13,341 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (89)] Forceful destruction successful, exit code 0 [2022-11-03 04:05:13,554 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (88)] Ended with exit code 0 [2022-11-03 04:05:13,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 89 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,88 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:05:13,734 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:13,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:13,734 INFO L85 PathProgramCache]: Analyzing trace with hash 940279976, now seen corresponding path program 1 times [2022-11-03 04:05:13,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:13,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [139943698] [2022-11-03 04:05:13,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:13,736 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:13,736 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:13,737 INFO L229 MonitoredProcess]: Starting monitored process 90 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:13,738 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Waiting until timeout for monitored process [2022-11-03 04:05:14,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:14,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:05:14,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:15,275 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 20 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-11-03 04:05:15,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:15,357 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [139943698] [2022-11-03 04:05:15,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [139943698] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:15,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [327533782] [2022-11-03 04:05:15,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:15,358 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:15,358 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:05:15,359 INFO L229 MonitoredProcess]: Starting monitored process 91 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:05:15,361 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Waiting until timeout for monitored process [2022-11-03 04:05:16,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:16,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 27 conjunts are in the unsatisfiable core [2022-11-03 04:05:16,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 147 proven. 84 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:05:18,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:18,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [327533782] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:18,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1134706342] [2022-11-03 04:05:18,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:18,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:18,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:18,958 INFO L229 MonitoredProcess]: Starting monitored process 92 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:18,959 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Waiting until timeout for monitored process [2022-11-03 04:05:19,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:19,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:05:19,536 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:21,146 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 13 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-11-03 04:05:21,147 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:21,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1134706342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:21,471 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:05:21,472 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 12, 7] total 24 [2022-11-03 04:05:21,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783657739] [2022-11-03 04:05:21,472 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:05:21,473 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-11-03 04:05:21,473 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:21,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-11-03 04:05:21,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2022-11-03 04:05:21,474 INFO L87 Difference]: Start difference. First operand 2203 states and 2739 transitions. Second operand has 24 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:05:40,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:05:40,368 INFO L93 Difference]: Finished difference Result 15450 states and 19115 transitions. [2022-11-03 04:05:40,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 104 states. [2022-11-03 04:05:40,368 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 04:05:40,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:05:40,381 INFO L225 Difference]: With dead ends: 15450 [2022-11-03 04:05:40,381 INFO L226 Difference]: Without dead ends: 13297 [2022-11-03 04:05:40,385 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1287 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 130 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4698 ImplicationChecksByTransitivity, 15.2s TimeCoverageRelationStatistics Valid=3613, Invalid=13679, Unknown=0, NotChecked=0, Total=17292 [2022-11-03 04:05:40,386 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 7069 mSDsluCounter, 6869 mSDsCounter, 0 mSdLazyCounter, 2156 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7075 SdHoareTripleChecker+Valid, 7389 SdHoareTripleChecker+Invalid, 4108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1577 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:05:40,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7075 Valid, 7389 Invalid, 4108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2156 Invalid, 0 Unknown, 1577 Unchecked, 3.2s Time] [2022-11-03 04:05:40,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13297 states. [2022-11-03 04:05:40,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13297 to 6254. [2022-11-03 04:05:40,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6254 states, 6165 states have (on average 1.2149229521492295) internal successors, (7490), 6165 states have internal predecessors, (7490), 87 states have call successors, (87), 1 states have call predecessors, (87), 1 states have return successors, (87), 87 states have call predecessors, (87), 87 states have call successors, (87) [2022-11-03 04:05:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6254 states to 6254 states and 7664 transitions. [2022-11-03 04:05:40,952 INFO L78 Accepts]: Start accepts. Automaton has 6254 states and 7664 transitions. Word has length 261 [2022-11-03 04:05:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:05:40,953 INFO L495 AbstractCegarLoop]: Abstraction has 6254 states and 7664 transitions. [2022-11-03 04:05:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 20.708333333333332) internal successors, (497), 24 states have internal predecessors, (497), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:05:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 6254 states and 7664 transitions. [2022-11-03 04:05:40,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:05:40,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:05:40,989 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:05:41,008 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (90)] Ended with exit code 0 [2022-11-03 04:05:41,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (91)] Ended with exit code 0 [2022-11-03 04:05:41,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (92)] Ended with exit code 0 [2022-11-03 04:05:41,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 90 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,91 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,92 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:41,590 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:05:41,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:05:41,590 INFO L85 PathProgramCache]: Analyzing trace with hash -948208394, now seen corresponding path program 1 times [2022-11-03 04:05:41,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:05:41,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1153858408] [2022-11-03 04:05:41,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:41,592 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:05:41,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:05:41,593 INFO L229 MonitoredProcess]: Starting monitored process 93 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:05:41,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Waiting until timeout for monitored process [2022-11-03 04:05:42,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:42,311 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:05:42,315 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 199 proven. 22 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-11-03 04:05:43,102 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:43,185 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:05:43,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1153858408] [2022-11-03 04:05:43,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1153858408] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:43,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [746388810] [2022-11-03 04:05:43,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:43,186 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:05:43,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:05:43,194 INFO L229 MonitoredProcess]: Starting monitored process 94 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:05:43,196 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (94)] Waiting until timeout for monitored process [2022-11-03 04:05:44,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:44,614 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 04:05:44,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:47,515 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:05:47,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:48,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [746388810] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:48,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1335262118] [2022-11-03 04:05:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:05:48,164 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:05:48,164 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:05:48,165 INFO L229 MonitoredProcess]: Starting monitored process 95 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:05:48,166 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Waiting until timeout for monitored process [2022-11-03 04:05:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:05:48,764 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 33 conjunts are in the unsatisfiable core [2022-11-03 04:05:48,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:05:51,254 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 133 proven. 23 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-11-03 04:05:51,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:05:51,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1335262118] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:05:51,668 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:05:51,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20, 13] total 36 [2022-11-03 04:05:51,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171982718] [2022-11-03 04:05:51,668 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:05:51,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 04:05:51,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:05:51,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 04:05:51,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1956, Unknown=0, NotChecked=0, Total=2070 [2022-11-03 04:05:51,671 INFO L87 Difference]: Start difference. First operand 6254 states and 7664 transitions. Second operand has 36 states, 36 states have (on average 17.416666666666668) internal successors, (627), 36 states have internal predecessors, (627), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:06:02,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:02,047 INFO L93 Difference]: Finished difference Result 23220 states and 28373 transitions. [2022-11-03 04:06:02,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-11-03 04:06:02,048 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 36 states have (on average 17.416666666666668) internal successors, (627), 36 states have internal predecessors, (627), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 261 [2022-11-03 04:06:02,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:02,062 INFO L225 Difference]: With dead ends: 23220 [2022-11-03 04:06:02,062 INFO L226 Difference]: Without dead ends: 17554 [2022-11-03 04:06:02,068 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1052 GetRequests, 956 SyntacticMatches, 6 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 1520 ImplicationChecksByTransitivity, 11.1s TimeCoverageRelationStatistics Valid=573, Invalid=7799, Unknown=0, NotChecked=0, Total=8372 [2022-11-03 04:06:02,068 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 963 mSDsluCounter, 13863 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 966 SdHoareTripleChecker+Valid, 14348 SdHoareTripleChecker+Invalid, 2879 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2080 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:02,069 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [966 Valid, 14348 Invalid, 2879 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 762 Invalid, 0 Unknown, 2080 Unchecked, 1.1s Time] [2022-11-03 04:06:02,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17554 states. [2022-11-03 04:06:03,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17554 to 10802. [2022-11-03 04:06:03,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10802 states, 10635 states have (on average 1.2164551010813351) internal successors, (12937), 10635 states have internal predecessors, (12937), 165 states have call successors, (165), 1 states have call predecessors, (165), 1 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2022-11-03 04:06:03,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10802 states to 10802 states and 13267 transitions. [2022-11-03 04:06:03,126 INFO L78 Accepts]: Start accepts. Automaton has 10802 states and 13267 transitions. Word has length 261 [2022-11-03 04:06:03,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:03,127 INFO L495 AbstractCegarLoop]: Abstraction has 10802 states and 13267 transitions. [2022-11-03 04:06:03,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 36 states have (on average 17.416666666666668) internal successors, (627), 36 states have internal predecessors, (627), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:06:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 10802 states and 13267 transitions. [2022-11-03 04:06:03,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:06:03,135 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:03,136 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:06:03,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (95)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:03,360 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (94)] Ended with exit code 0 [2022-11-03 04:06:03,572 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (93)] Forceful destruction successful, exit code 0 [2022-11-03 04:06:03,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 95 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,94 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,93 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:06:03,752 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:03,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:03,753 INFO L85 PathProgramCache]: Analyzing trace with hash 2064586616, now seen corresponding path program 2 times [2022-11-03 04:06:03,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:06:03,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1804888529] [2022-11-03 04:06:03,754 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:06:03,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:06:03,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:06:03,755 INFO L229 MonitoredProcess]: Starting monitored process 96 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:06:03,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Waiting until timeout for monitored process [2022-11-03 04:06:04,140 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 04:06:04,140 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:06:04,148 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:06:04,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:05,746 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:06:05,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:06:05,883 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:06:05,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1804888529] [2022-11-03 04:06:05,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1804888529] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:06:05,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [838514224] [2022-11-03 04:06:05,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:06:05,883 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:06:05,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:06:05,885 INFO L229 MonitoredProcess]: Starting monitored process 97 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:06:05,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (97)] Waiting until timeout for monitored process [2022-11-03 04:06:06,574 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 04:06:06,574 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:06:06,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:06:06,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:08,436 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 34 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:06:08,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:06:08,917 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [838514224] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:06:08,917 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [356284921] [2022-11-03 04:06:08,917 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-03 04:06:08,917 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:08,917 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:08,918 INFO L229 MonitoredProcess]: Starting monitored process 98 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:06:08,919 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Waiting until timeout for monitored process [2022-11-03 04:06:09,310 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-03 04:06:09,311 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-03 04:06:09,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:06:09,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:10,875 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:06:10,875 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:06:10,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [356284921] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:06:10,989 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:06:10,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 13 [2022-11-03 04:06:10,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316572538] [2022-11-03 04:06:10,989 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:06:10,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:06:10,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:06:10,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:06:10,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=327, Unknown=0, NotChecked=0, Total=380 [2022-11-03 04:06:10,991 INFO L87 Difference]: Start difference. First operand 10802 states and 13267 transitions. Second operand has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:06:19,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:06:19,045 INFO L93 Difference]: Finished difference Result 41495 states and 50883 transitions. [2022-11-03 04:06:19,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-03 04:06:19,046 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:06:19,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:06:19,070 INFO L225 Difference]: With dead ends: 41495 [2022-11-03 04:06:19,070 INFO L226 Difference]: Without dead ends: 31032 [2022-11-03 04:06:19,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 889 GetRequests, 845 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 4.0s TimeCoverageRelationStatistics Valid=631, Invalid=1349, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 04:06:19,078 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 3226 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3226 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:06:19,078 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3226 Valid, 1358 Invalid, 642 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-03 04:06:19,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31032 states. [2022-11-03 04:06:20,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31032 to 10660. [2022-11-03 04:06:20,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10660 states, 10493 states have (on average 1.2030877728009148) internal successors, (12624), 10493 states have internal predecessors, (12624), 165 states have call successors, (165), 1 states have call predecessors, (165), 1 states have return successors, (165), 165 states have call predecessors, (165), 165 states have call successors, (165) [2022-11-03 04:06:20,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10660 states to 10660 states and 12954 transitions. [2022-11-03 04:06:20,402 INFO L78 Accepts]: Start accepts. Automaton has 10660 states and 12954 transitions. Word has length 261 [2022-11-03 04:06:20,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:06:20,402 INFO L495 AbstractCegarLoop]: Abstraction has 10660 states and 12954 transitions. [2022-11-03 04:06:20,403 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 21.615384615384617) internal successors, (281), 13 states have internal predecessors, (281), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:06:20,403 INFO L276 IsEmpty]: Start isEmpty. Operand 10660 states and 12954 transitions. [2022-11-03 04:06:20,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:06:20,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:06:20,409 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:06:20,419 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (96)] Ended with exit code 0 [2022-11-03 04:06:20,615 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (97)] Ended with exit code 0 [2022-11-03 04:06:20,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (98)] Ended with exit code 0 [2022-11-03 04:06:21,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 96 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,97 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,98 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:21,010 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:06:21,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:06:21,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1110727668, now seen corresponding path program 1 times [2022-11-03 04:06:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:06:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1065235481] [2022-11-03 04:06:21,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:21,012 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:06:21,012 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:06:21,013 INFO L229 MonitoredProcess]: Starting monitored process 99 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:06:21,014 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Waiting until timeout for monitored process [2022-11-03 04:06:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:21,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 04:06:21,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:23,223 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 210 trivial. 0 not checked. [2022-11-03 04:06:23,223 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:06:23,297 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:06:23,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1065235481] [2022-11-03 04:06:23,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1065235481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:06:23,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [212700359] [2022-11-03 04:06:23,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:23,297 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:06:23,297 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:06:23,298 INFO L229 MonitoredProcess]: Starting monitored process 100 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:06:23,300 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (100)] Waiting until timeout for monitored process [2022-11-03 04:06:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:24,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 47 conjunts are in the unsatisfiable core [2022-11-03 04:06:24,761 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:27,814 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:06:27,814 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:06:28,501 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [212700359] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:06:28,501 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703139949] [2022-11-03 04:06:28,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:06:28,501 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:06:28,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:06:28,502 INFO L229 MonitoredProcess]: Starting monitored process 101 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:06:28,504 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Waiting until timeout for monitored process [2022-11-03 04:06:29,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:06:29,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:06:29,096 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:06:31,785 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:06:31,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:06:32,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703139949] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:06:32,182 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:06:32,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 20, 7] total 35 [2022-11-03 04:06:32,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702846860] [2022-11-03 04:06:32,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:06:32,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-03 04:06:32,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:06:32,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-03 04:06:32,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1869, Unknown=0, NotChecked=0, Total=1980 [2022-11-03 04:06:32,185 INFO L87 Difference]: Start difference. First operand 10660 states and 12954 transitions. Second operand has 35 states, 35 states have (on average 14.771428571428572) internal successors, (517), 35 states have internal predecessors, (517), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:07:01,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:01,811 INFO L93 Difference]: Finished difference Result 40748 states and 49406 transitions. [2022-11-03 04:07:01,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 137 states. [2022-11-03 04:07:01,812 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 35 states have (on average 14.771428571428572) internal successors, (517), 35 states have internal predecessors, (517), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 04:07:01,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:01,837 INFO L225 Difference]: With dead ends: 40748 [2022-11-03 04:07:01,837 INFO L226 Difference]: Without dead ends: 30807 [2022-11-03 04:07:01,845 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1018 GetRequests, 841 SyntacticMatches, 0 SemanticMatches, 177 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9197 ImplicationChecksByTransitivity, 24.6s TimeCoverageRelationStatistics Valid=3484, Invalid=28378, Unknown=0, NotChecked=0, Total=31862 [2022-11-03 04:07:01,846 INFO L413 NwaCegarLoop]: 660 mSDtfsCounter, 7050 mSDsluCounter, 15541 mSDsCounter, 0 mSdLazyCounter, 2897 mSolverCounterSat, 404 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7050 SdHoareTripleChecker+Valid, 16201 SdHoareTripleChecker+Invalid, 6908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 404 IncrementalHoareTripleChecker+Valid, 2897 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3607 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:01,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7050 Valid, 16201 Invalid, 6908 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [404 Valid, 2897 Invalid, 0 Unknown, 3607 Unchecked, 4.0s Time] [2022-11-03 04:07:01,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30807 states. [2022-11-03 04:07:02,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30807 to 8201. [2022-11-03 04:07:02,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8201 states, 8079 states have (on average 1.2053471964352023) internal successors, (9738), 8079 states have internal predecessors, (9738), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-03 04:07:02,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8201 states to 8201 states and 9978 transitions. [2022-11-03 04:07:02,719 INFO L78 Accepts]: Start accepts. Automaton has 8201 states and 9978 transitions. Word has length 261 [2022-11-03 04:07:02,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:02,719 INFO L495 AbstractCegarLoop]: Abstraction has 8201 states and 9978 transitions. [2022-11-03 04:07:02,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 14.771428571428572) internal successors, (517), 35 states have internal predecessors, (517), 6 states have call successors, (18), 1 states have call predecessors, (18), 1 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:07:02,720 INFO L276 IsEmpty]: Start isEmpty. Operand 8201 states and 9978 transitions. [2022-11-03 04:07:02,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:07:02,727 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:02,727 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:07:02,762 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (101)] Ended with exit code 0 [2022-11-03 04:07:02,963 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (99)] Ended with exit code 0 [2022-11-03 04:07:03,151 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (100)] Ended with exit code 0 [2022-11-03 04:07:03,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 101 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,99 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,100 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:07:03,346 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:03,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:03,346 INFO L85 PathProgramCache]: Analyzing trace with hash -314930640, now seen corresponding path program 1 times [2022-11-03 04:07:03,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:03,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [915965329] [2022-11-03 04:07:03,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:03,347 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:03,347 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:03,348 INFO L229 MonitoredProcess]: Starting monitored process 102 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:03,350 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Waiting until timeout for monitored process [2022-11-03 04:07:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:03,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 13 conjunts are in the unsatisfiable core [2022-11-03 04:07:03,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:04,626 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 193 proven. 1 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-11-03 04:07:04,626 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:04,916 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 122 proven. 0 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-11-03 04:07:04,916 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:04,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [915965329] [2022-11-03 04:07:04,916 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [915965329] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:04,917 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-03 04:07:04,917 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-11-03 04:07:04,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839985108] [2022-11-03 04:07:04,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 04:07:04,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 04:07:04,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:04,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 04:07:04,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-11-03 04:07:04,918 INFO L87 Difference]: Start difference. First operand 8201 states and 9978 transitions. Second operand has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:07:06,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:06,151 INFO L93 Difference]: Finished difference Result 18114 states and 22051 transitions. [2022-11-03 04:07:06,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 04:07:06,152 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 261 [2022-11-03 04:07:06,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:06,163 INFO L225 Difference]: With dead ends: 18114 [2022-11-03 04:07:06,163 INFO L226 Difference]: Without dead ends: 10805 [2022-11-03 04:07:06,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 521 GetRequests, 510 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-11-03 04:07:06,170 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 91 mSDsluCounter, 567 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 808 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:06,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 808 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 72 Unchecked, 0.0s Time] [2022-11-03 04:07:06,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10805 states. [2022-11-03 04:07:06,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10805 to 8013. [2022-11-03 04:07:06,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8013 states, 7891 states have (on average 1.2022557343809404) internal successors, (9487), 7891 states have internal predecessors, (9487), 120 states have call successors, (120), 1 states have call predecessors, (120), 1 states have return successors, (120), 120 states have call predecessors, (120), 120 states have call successors, (120) [2022-11-03 04:07:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8013 states to 8013 states and 9727 transitions. [2022-11-03 04:07:06,850 INFO L78 Accepts]: Start accepts. Automaton has 8013 states and 9727 transitions. Word has length 261 [2022-11-03 04:07:06,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:06,850 INFO L495 AbstractCegarLoop]: Abstraction has 8013 states and 9727 transitions. [2022-11-03 04:07:06,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 32.166666666666664) internal successors, (193), 6 states have internal predecessors, (193), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-03 04:07:06,851 INFO L276 IsEmpty]: Start isEmpty. Operand 8013 states and 9727 transitions. [2022-11-03 04:07:06,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:07:06,859 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:06,859 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:07:06,882 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (102)] Ended with exit code 0 [2022-11-03 04:07:07,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 102 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:07:07,075 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:07,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:07,075 INFO L85 PathProgramCache]: Analyzing trace with hash -1557209804, now seen corresponding path program 1 times [2022-11-03 04:07:07,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:07,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [45402883] [2022-11-03 04:07:07,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:07,076 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:07,077 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:07,077 INFO L229 MonitoredProcess]: Starting monitored process 103 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:07,078 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Waiting until timeout for monitored process [2022-11-03 04:07:07,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:07,709 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:07:07,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:08,331 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 155 proven. 76 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:07:08,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:08,803 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 83 proven. 76 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:07:08,804 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:08,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [45402883] [2022-11-03 04:07:08,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [45402883] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:07:08,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1397269320] [2022-11-03 04:07:08,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:08,804 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:07:08,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:07:08,806 INFO L229 MonitoredProcess]: Starting monitored process 104 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:07:08,807 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (104)] Waiting until timeout for monitored process [2022-11-03 04:07:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:10,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:07:10,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:10,748 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 155 proven. 76 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:07:10,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:11,154 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 83 proven. 76 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:07:11,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1397269320] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:07:11,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1621140984] [2022-11-03 04:07:11,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:11,155 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:07:11,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:11,156 INFO L229 MonitoredProcess]: Starting monitored process 105 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:07:11,157 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Waiting until timeout for monitored process [2022-11-03 04:07:11,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:11,647 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-03 04:07:11,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:12,395 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 155 proven. 76 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:07:12,395 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:12,897 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 83 proven. 76 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:07:12,897 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1621140984] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 04:07:12,897 INFO L184 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2022-11-03 04:07:12,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 14 [2022-11-03 04:07:12,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703630415] [2022-11-03 04:07:12,898 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2022-11-03 04:07:12,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-03 04:07:12,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:12,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-03 04:07:12,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-11-03 04:07:12,900 INFO L87 Difference]: Start difference. First operand 8013 states and 9727 transitions. Second operand has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-03 04:07:15,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:15,802 INFO L93 Difference]: Finished difference Result 32221 states and 38582 transitions. [2022-11-03 04:07:15,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-03 04:07:15,803 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) Word has length 261 [2022-11-03 04:07:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:15,830 INFO L225 Difference]: With dead ends: 32221 [2022-11-03 04:07:15,831 INFO L226 Difference]: Without dead ends: 25100 [2022-11-03 04:07:15,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1573 GetRequests, 1548 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=196, Invalid=506, Unknown=0, NotChecked=0, Total=702 [2022-11-03 04:07:15,839 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1401 mSDsluCounter, 1878 mSDsCounter, 0 mSdLazyCounter, 647 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1401 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:15,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1401 Valid, 2322 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 647 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-03 04:07:15,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25100 states. [2022-11-03 04:07:16,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25100 to 9928. [2022-11-03 04:07:16,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9928 states, 9803 states have (on average 1.1909619504233397) internal successors, (11675), 9803 states have internal predecessors, (11675), 123 states have call successors, (123), 1 states have call predecessors, (123), 1 states have return successors, (123), 123 states have call predecessors, (123), 123 states have call successors, (123) [2022-11-03 04:07:16,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9928 states to 9928 states and 11921 transitions. [2022-11-03 04:07:16,762 INFO L78 Accepts]: Start accepts. Automaton has 9928 states and 11921 transitions. Word has length 261 [2022-11-03 04:07:16,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:16,763 INFO L495 AbstractCegarLoop]: Abstraction has 9928 states and 11921 transitions. [2022-11-03 04:07:16,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 27.714285714285715) internal successors, (388), 14 states have internal predecessors, (388), 5 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 5 states have call predecessors, (18), 5 states have call successors, (18) [2022-11-03 04:07:16,763 INFO L276 IsEmpty]: Start isEmpty. Operand 9928 states and 11921 transitions. [2022-11-03 04:07:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:07:16,767 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:16,767 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:07:16,788 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (103)] Ended with exit code 0 [2022-11-03 04:07:17,004 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (105)] Ended with exit code 0 [2022-11-03 04:07:17,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (104)] Ended with exit code 0 [2022-11-03 04:07:17,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 103 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,105 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,104 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:07:17,381 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:17,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:17,381 INFO L85 PathProgramCache]: Analyzing trace with hash -1055137952, now seen corresponding path program 1 times [2022-11-03 04:07:17,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:17,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1615267650] [2022-11-03 04:07:17,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:17,382 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:17,382 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:17,383 INFO L229 MonitoredProcess]: Starting monitored process 106 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:17,384 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Waiting until timeout for monitored process [2022-11-03 04:07:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:17,977 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:07:17,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:19,166 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 189 proven. 42 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:07:19,166 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:19,446 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:19,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1615267650] [2022-11-03 04:07:19,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1615267650] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:19,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [527754055] [2022-11-03 04:07:19,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:19,447 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:07:19,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:07:19,448 INFO L229 MonitoredProcess]: Starting monitored process 107 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:07:19,449 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (107)] Waiting until timeout for monitored process [2022-11-03 04:07:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:20,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 46 conjunts are in the unsatisfiable core [2022-11-03 04:07:20,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:22,727 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 0 proven. 159 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:07:22,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:23,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [527754055] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:23,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [226283269] [2022-11-03 04:07:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:23,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:07:23,281 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:23,282 INFO L229 MonitoredProcess]: Starting monitored process 108 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:07:23,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Waiting until timeout for monitored process [2022-11-03 04:07:23,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:23,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 04:07:23,830 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:26,380 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:07:26,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:26,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [226283269] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:26,534 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:07:26,534 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 20, 15] total 39 [2022-11-03 04:07:26,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835922617] [2022-11-03 04:07:26,535 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:07:26,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-03 04:07:26,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:07:26,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-03 04:07:26,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=2147, Unknown=0, NotChecked=0, Total=2256 [2022-11-03 04:07:26,537 INFO L87 Difference]: Start difference. First operand 9928 states and 11921 transitions. Second operand has 39 states, 39 states have (on average 16.307692307692307) internal successors, (636), 39 states have internal predecessors, (636), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:07:51,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:07:51,696 INFO L93 Difference]: Finished difference Result 28443 states and 34395 transitions. [2022-11-03 04:07:51,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 213 states. [2022-11-03 04:07:51,697 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 16.307692307692307) internal successors, (636), 39 states have internal predecessors, (636), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) Word has length 261 [2022-11-03 04:07:51,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:07:51,716 INFO L225 Difference]: With dead ends: 28443 [2022-11-03 04:07:51,717 INFO L226 Difference]: Without dead ends: 21591 [2022-11-03 04:07:51,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1217 GetRequests, 970 SyntacticMatches, 0 SemanticMatches, 247 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19630 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=5334, Invalid=56418, Unknown=0, NotChecked=0, Total=61752 [2022-11-03 04:07:51,726 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 4803 mSDsluCounter, 12777 mSDsCounter, 0 mSdLazyCounter, 2557 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4809 SdHoareTripleChecker+Valid, 13220 SdHoareTripleChecker+Invalid, 7108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 4100 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-03 04:07:51,727 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4809 Valid, 13220 Invalid, 7108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2557 Invalid, 0 Unknown, 4100 Unchecked, 3.0s Time] [2022-11-03 04:07:51,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21591 states. [2022-11-03 04:07:52,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21591 to 13827. [2022-11-03 04:07:52,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13827 states, 13651 states have (on average 1.186213464215076) internal successors, (16193), 13651 states have internal predecessors, (16193), 174 states have call successors, (174), 1 states have call predecessors, (174), 1 states have return successors, (174), 174 states have call predecessors, (174), 174 states have call successors, (174) [2022-11-03 04:07:52,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13827 states to 13827 states and 16541 transitions. [2022-11-03 04:07:52,914 INFO L78 Accepts]: Start accepts. Automaton has 13827 states and 16541 transitions. Word has length 261 [2022-11-03 04:07:52,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:07:52,914 INFO L495 AbstractCegarLoop]: Abstraction has 13827 states and 16541 transitions. [2022-11-03 04:07:52,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 16.307692307692307) internal successors, (636), 39 states have internal predecessors, (636), 9 states have call successors, (27), 2 states have call predecessors, (27), 2 states have return successors, (27), 9 states have call predecessors, (27), 9 states have call successors, (27) [2022-11-03 04:07:52,915 INFO L276 IsEmpty]: Start isEmpty. Operand 13827 states and 16541 transitions. [2022-11-03 04:07:52,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:07:52,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:07:52,920 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:07:52,937 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (106)] Ended with exit code 0 [2022-11-03 04:07:53,143 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (108)] Forceful destruction successful, exit code 0 [2022-11-03 04:07:53,326 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (107)] Ended with exit code 0 [2022-11-03 04:07:53,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 106 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,108 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,107 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:07:53,520 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:07:53,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:07:53,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1650662498, now seen corresponding path program 1 times [2022-11-03 04:07:53,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:07:53,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [747985910] [2022-11-03 04:07:53,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:53,522 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:07:53,522 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:07:53,523 INFO L229 MonitoredProcess]: Starting monitored process 109 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:07:53,524 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Waiting until timeout for monitored process [2022-11-03 04:07:54,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:54,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:07:54,114 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:55,377 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 185 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:07:55,377 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:55,681 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:07:55,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [747985910] [2022-11-03 04:07:55,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [747985910] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:55,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1695501669] [2022-11-03 04:07:55,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:55,681 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:07:55,682 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:07:55,684 INFO L229 MonitoredProcess]: Starting monitored process 110 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:07:55,685 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (110)] Waiting until timeout for monitored process [2022-11-03 04:07:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:56,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:07:56,974 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:07:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 185 proven. 46 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:07:58,644 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:07:58,966 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1695501669] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:07:58,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595342323] [2022-11-03 04:07:58,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:07:58,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:07:58,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:07:58,968 INFO L229 MonitoredProcess]: Starting monitored process 111 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:07:58,969 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Waiting until timeout for monitored process [2022-11-03 04:07:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:07:59,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 28 conjunts are in the unsatisfiable core [2022-11-03 04:07:59,466 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:01,006 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 40 proven. 119 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:08:01,006 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:01,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595342323] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:01,080 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:08:01,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 14] total 20 [2022-11-03 04:08:01,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [730009921] [2022-11-03 04:08:01,080 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:08:01,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-11-03 04:08:01,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:01,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-11-03 04:08:01,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2022-11-03 04:08:01,082 INFO L87 Difference]: Start difference. First operand 13827 states and 16541 transitions. Second operand has 20 states, 20 states have (on average 20.8) internal successors, (416), 20 states have internal predecessors, (416), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:08:08,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:08,928 INFO L93 Difference]: Finished difference Result 40481 states and 48735 transitions. [2022-11-03 04:08:08,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-03 04:08:08,928 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 20.8) internal successors, (416), 20 states have internal predecessors, (416), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) Word has length 261 [2022-11-03 04:08:08,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:08,958 INFO L225 Difference]: With dead ends: 40481 [2022-11-03 04:08:08,958 INFO L226 Difference]: Without dead ends: 30783 [2022-11-03 04:08:08,966 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1161 GetRequests, 1062 SyntacticMatches, 1 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2486 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=1746, Invalid=8154, Unknown=0, NotChecked=0, Total=9900 [2022-11-03 04:08:08,966 INFO L413 NwaCegarLoop]: 983 mSDtfsCounter, 2324 mSDsluCounter, 10027 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 242 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2324 SdHoareTripleChecker+Valid, 11010 SdHoareTripleChecker+Invalid, 2854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 242 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1248 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:08,967 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2324 Valid, 11010 Invalid, 2854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [242 Valid, 1364 Invalid, 0 Unknown, 1248 Unchecked, 1.7s Time] [2022-11-03 04:08:08,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30783 states. [2022-11-03 04:08:10,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30783 to 13870. [2022-11-03 04:08:10,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13870 states, 13691 states have (on average 1.1855963771820903) internal successors, (16232), 13691 states have internal predecessors, (16232), 177 states have call successors, (177), 1 states have call predecessors, (177), 1 states have return successors, (177), 177 states have call predecessors, (177), 177 states have call successors, (177) [2022-11-03 04:08:10,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13870 states to 13870 states and 16586 transitions. [2022-11-03 04:08:10,144 INFO L78 Accepts]: Start accepts. Automaton has 13870 states and 16586 transitions. Word has length 261 [2022-11-03 04:08:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:10,144 INFO L495 AbstractCegarLoop]: Abstraction has 13870 states and 16586 transitions. [2022-11-03 04:08:10,144 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 20.8) internal successors, (416), 20 states have internal predecessors, (416), 6 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (18), 6 states have call predecessors, (18), 6 states have call successors, (18) [2022-11-03 04:08:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 13870 states and 16586 transitions. [2022-11-03 04:08:10,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:08:10,150 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:10,150 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:10,172 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (109)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:10,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (110)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:10,575 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (111)] Ended with exit code 0 [2022-11-03 04:08:10,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 109 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,110 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,111 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:10,751 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:10,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:10,752 INFO L85 PathProgramCache]: Analyzing trace with hash 1701035940, now seen corresponding path program 1 times [2022-11-03 04:08:10,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:10,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [301143749] [2022-11-03 04:08:10,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:10,753 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:10,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:10,754 INFO L229 MonitoredProcess]: Starting monitored process 112 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:10,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Waiting until timeout for monitored process [2022-11-03 04:08:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:11,349 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:11,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:12,668 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 181 proven. 50 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:08:12,668 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:13,045 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:13,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [301143749] [2022-11-03 04:08:13,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [301143749] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:13,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [492467060] [2022-11-03 04:08:13,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:13,046 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:08:13,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:08:13,047 INFO L229 MonitoredProcess]: Starting monitored process 113 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:08:13,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (113)] Waiting until timeout for monitored process [2022-11-03 04:08:14,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:14,397 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:14,405 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:15,844 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 181 proven. 50 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:08:15,844 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:16,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [492467060] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:16,191 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896789654] [2022-11-03 04:08:16,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:16,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:16,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:16,193 INFO L229 MonitoredProcess]: Starting monitored process 114 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:08:16,194 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Waiting until timeout for monitored process [2022-11-03 04:08:16,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:16,804 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:08:16,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:18,559 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 14 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:08:18,559 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:18,716 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896789654] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:18,716 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:08:18,716 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 04:08:18,717 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423826877] [2022-11-03 04:08:18,717 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:08:18,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:08:18,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:18,717 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:08:18,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:08:18,718 INFO L87 Difference]: Start difference. First operand 13870 states and 16586 transitions. Second operand has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:08:28,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:28,556 INFO L93 Difference]: Finished difference Result 37307 states and 45027 transitions. [2022-11-03 04:08:28,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 04:08:28,556 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 04:08:28,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:28,575 INFO L225 Difference]: With dead ends: 37307 [2022-11-03 04:08:28,575 INFO L226 Difference]: Without dead ends: 23896 [2022-11-03 04:08:28,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1094 ImplicationChecksByTransitivity, 4.5s TimeCoverageRelationStatistics Valid=1202, Invalid=3490, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 04:08:28,583 INFO L413 NwaCegarLoop]: 727 mSDtfsCounter, 2375 mSDsluCounter, 3420 mSDsCounter, 0 mSdLazyCounter, 1380 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 4147 SdHoareTripleChecker+Invalid, 1639 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:28,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2375 Valid, 4147 Invalid, 1639 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1380 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-03 04:08:28,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23896 states. [2022-11-03 04:08:30,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23896 to 9980. [2022-11-03 04:08:30,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9980 states, 9837 states have (on average 1.185422384873437) internal successors, (11661), 9837 states have internal predecessors, (11661), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 04:08:30,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9980 states to 9980 states and 11943 transitions. [2022-11-03 04:08:30,146 INFO L78 Accepts]: Start accepts. Automaton has 9980 states and 11943 transitions. Word has length 261 [2022-11-03 04:08:30,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:30,146 INFO L495 AbstractCegarLoop]: Abstraction has 9980 states and 11943 transitions. [2022-11-03 04:08:30,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:08:30,147 INFO L276 IsEmpty]: Start isEmpty. Operand 9980 states and 11943 transitions. [2022-11-03 04:08:30,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:08:30,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:30,151 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:30,160 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (113)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:30,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (112)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:30,581 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (114)] Ended with exit code 0 [2022-11-03 04:08:30,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 113 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,112 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,114 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:30,752 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash 358942312, now seen corresponding path program 1 times [2022-11-03 04:08:30,754 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:30,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [388609551] [2022-11-03 04:08:30,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:30,754 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:30,754 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:30,755 INFO L229 MonitoredProcess]: Starting monitored process 115 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:30,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Waiting until timeout for monitored process [2022-11-03 04:08:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:31,483 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:31,487 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 177 proven. 54 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:08:32,963 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:33,387 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:33,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [388609551] [2022-11-03 04:08:33,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [388609551] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:33,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [839735077] [2022-11-03 04:08:33,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:33,387 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:08:33,388 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:08:33,388 INFO L229 MonitoredProcess]: Starting monitored process 116 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:08:33,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Waiting until timeout for monitored process [2022-11-03 04:08:34,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:34,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:34,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:36,214 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 177 proven. 54 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:08:36,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:36,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [839735077] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:36,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1961012623] [2022-11-03 04:08:36,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:36,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:08:36,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:08:36,585 INFO L229 MonitoredProcess]: Starting monitored process 117 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:08:36,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Waiting until timeout for monitored process [2022-11-03 04:08:37,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:37,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:08:37,110 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:39,969 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:08:39,969 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:40,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1961012623] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:40,185 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:08:40,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 04:08:40,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746339772] [2022-11-03 04:08:40,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:08:40,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:08:40,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:08:40,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:08:40,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:08:40,187 INFO L87 Difference]: Start difference. First operand 9980 states and 11943 transitions. Second operand has 13 states, 13 states have (on average 27.53846153846154) internal successors, (358), 13 states have internal predecessors, (358), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:08:51,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:08:51,723 INFO L93 Difference]: Finished difference Result 46861 states and 56186 transitions. [2022-11-03 04:08:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 04:08:51,724 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.53846153846154) internal successors, (358), 13 states have internal predecessors, (358), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 04:08:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:08:51,751 INFO L225 Difference]: With dead ends: 46861 [2022-11-03 04:08:51,751 INFO L226 Difference]: Without dead ends: 37206 [2022-11-03 04:08:51,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1097 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=1207, Invalid=3485, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 04:08:51,758 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 2278 mSDsluCounter, 3495 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2278 SdHoareTripleChecker+Valid, 4268 SdHoareTripleChecker+Invalid, 1751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 04:08:51,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2278 Valid, 4268 Invalid, 1751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 04:08:51,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37206 states. [2022-11-03 04:08:52,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37206 to 10170. [2022-11-03 04:08:52,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10170 states, 10027 states have (on average 1.183205345566969) internal successors, (11864), 10027 states have internal predecessors, (11864), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 04:08:52,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10170 states to 10170 states and 12146 transitions. [2022-11-03 04:08:52,873 INFO L78 Accepts]: Start accepts. Automaton has 10170 states and 12146 transitions. Word has length 261 [2022-11-03 04:08:52,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:08:52,873 INFO L495 AbstractCegarLoop]: Abstraction has 10170 states and 12146 transitions. [2022-11-03 04:08:52,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.53846153846154) internal successors, (358), 13 states have internal predecessors, (358), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:08:52,874 INFO L276 IsEmpty]: Start isEmpty. Operand 10170 states and 12146 transitions. [2022-11-03 04:08:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:08:52,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:08:52,878 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:08:52,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (116)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:53,109 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (117)] Forceful destruction successful, exit code 0 [2022-11-03 04:08:53,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (115)] Ended with exit code 0 [2022-11-03 04:08:53,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 116 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,117 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,115 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:08:53,479 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:08:53,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:08:53,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1036680536, now seen corresponding path program 1 times [2022-11-03 04:08:53,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:08:53,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [561126140] [2022-11-03 04:08:53,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:53,481 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:08:53,481 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:08:53,482 INFO L229 MonitoredProcess]: Starting monitored process 118 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:08:53,484 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (118)] Waiting until timeout for monitored process [2022-11-03 04:08:54,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:54,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:54,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:55,885 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 173 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:08:55,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:08:56,335 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:08:56,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [561126140] [2022-11-03 04:08:56,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [561126140] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:08:56,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2112834514] [2022-11-03 04:08:56,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:08:56,335 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:08:56,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:08:56,336 INFO L229 MonitoredProcess]: Starting monitored process 119 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:08:56,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (119)] Waiting until timeout for monitored process [2022-11-03 04:08:57,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:08:57,781 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:08:57,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:08:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 173 proven. 58 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:08:59,823 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:00,278 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2112834514] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:00,278 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1269603473] [2022-11-03 04:09:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:00,278 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:00,278 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:00,279 INFO L229 MonitoredProcess]: Starting monitored process 120 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:00,281 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Waiting until timeout for monitored process [2022-11-03 04:09:00,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:00,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 17 conjunts are in the unsatisfiable core [2022-11-03 04:09:00,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:02,505 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 18 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:09:02,505 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:02,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1269603473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:02,680 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:09:02,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 04:09:02,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1744540057] [2022-11-03 04:09:02,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:09:02,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:09:02,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:02,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:09:02,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:09:02,683 INFO L87 Difference]: Start difference. First operand 10170 states and 12146 transitions. Second operand has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:09:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:13,706 INFO L93 Difference]: Finished difference Result 34593 states and 41684 transitions. [2022-11-03 04:09:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 04:09:13,707 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 04:09:13,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:13,728 INFO L225 Difference]: With dead ends: 34593 [2022-11-03 04:09:13,728 INFO L226 Difference]: Without dead ends: 24742 [2022-11-03 04:09:13,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=1202, Invalid=3490, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 04:09:13,736 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2640 mSDsluCounter, 2939 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2640 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 1434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:13,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2640 Valid, 3495 Invalid, 1434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 1168 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 04:09:13,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24742 states. [2022-11-03 04:09:14,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24742 to 9580. [2022-11-03 04:09:14,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9580 states, 9437 states have (on average 1.1831090388894776) internal successors, (11165), 9437 states have internal predecessors, (11165), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 04:09:14,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9580 states to 9580 states and 11447 transitions. [2022-11-03 04:09:14,887 INFO L78 Accepts]: Start accepts. Automaton has 9580 states and 11447 transitions. Word has length 261 [2022-11-03 04:09:14,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:14,888 INFO L495 AbstractCegarLoop]: Abstraction has 9580 states and 11447 transitions. [2022-11-03 04:09:14,888 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.0) internal successors, (351), 13 states have internal predecessors, (351), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:09:14,888 INFO L276 IsEmpty]: Start isEmpty. Operand 9580 states and 11447 transitions. [2022-11-03 04:09:14,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:09:14,892 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:14,892 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:09:14,925 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (120)] Ended with exit code 0 [2022-11-03 04:09:15,113 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (118)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:15,302 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (119)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:15,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 120 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,118 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,119 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:09:15,493 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:15,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:15,494 INFO L85 PathProgramCache]: Analyzing trace with hash 479432044, now seen corresponding path program 1 times [2022-11-03 04:09:15,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:15,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [975088436] [2022-11-03 04:09:15,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:15,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:15,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:15,496 INFO L229 MonitoredProcess]: Starting monitored process 121 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:15,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (121)] Waiting until timeout for monitored process [2022-11-03 04:09:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:16,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:09:16,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:17,879 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 169 proven. 62 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:09:17,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:18,353 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:18,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [975088436] [2022-11-03 04:09:18,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [975088436] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:18,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2054737988] [2022-11-03 04:09:18,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:18,354 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:09:18,354 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:09:18,355 INFO L229 MonitoredProcess]: Starting monitored process 122 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:09:18,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (122)] Waiting until timeout for monitored process [2022-11-03 04:09:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:19,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-03 04:09:19,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:21,473 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 169 proven. 62 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:09:21,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:21,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2054737988] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:21,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1653754780] [2022-11-03 04:09:21,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:21,927 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:21,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:21,928 INFO L229 MonitoredProcess]: Starting monitored process 123 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:21,929 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Waiting until timeout for monitored process [2022-11-03 04:09:22,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:22,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:09:22,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:25,661 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:09:25,661 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:25,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1653754780] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:25,878 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:09:25,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 04:09:25,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738270575] [2022-11-03 04:09:25,879 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:09:25,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:09:25,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:25,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:09:25,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:09:25,881 INFO L87 Difference]: Start difference. First operand 9580 states and 11447 transitions. Second operand has 13 states, 13 states have (on average 27.384615384615383) internal successors, (356), 13 states have internal predecessors, (356), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:09:37,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:09:37,572 INFO L93 Difference]: Finished difference Result 38246 states and 45673 transitions. [2022-11-03 04:09:37,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 04:09:37,573 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.384615384615383) internal successors, (356), 13 states have internal predecessors, (356), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 04:09:37,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:09:37,599 INFO L225 Difference]: With dead ends: 38246 [2022-11-03 04:09:37,599 INFO L226 Difference]: Without dead ends: 28969 [2022-11-03 04:09:37,607 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1098 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=1207, Invalid=3485, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 04:09:37,607 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 2325 mSDsluCounter, 2988 mSDsCounter, 0 mSdLazyCounter, 1286 mSolverCounterSat, 263 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2325 SdHoareTripleChecker+Valid, 3542 SdHoareTripleChecker+Invalid, 1549 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 263 IncrementalHoareTripleChecker+Valid, 1286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:09:37,607 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2325 Valid, 3542 Invalid, 1549 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [263 Valid, 1286 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 04:09:37,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28969 states. [2022-11-03 04:09:38,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28969 to 9606. [2022-11-03 04:09:38,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9606 states, 9463 states have (on average 1.174363309732643) internal successors, (11113), 9463 states have internal predecessors, (11113), 141 states have call successors, (141), 1 states have call predecessors, (141), 1 states have return successors, (141), 141 states have call predecessors, (141), 141 states have call successors, (141) [2022-11-03 04:09:38,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9606 states to 9606 states and 11395 transitions. [2022-11-03 04:09:38,794 INFO L78 Accepts]: Start accepts. Automaton has 9606 states and 11395 transitions. Word has length 261 [2022-11-03 04:09:38,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:09:38,794 INFO L495 AbstractCegarLoop]: Abstraction has 9606 states and 11395 transitions. [2022-11-03 04:09:38,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.384615384615383) internal successors, (356), 13 states have internal predecessors, (356), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:09:38,795 INFO L276 IsEmpty]: Start isEmpty. Operand 9606 states and 11395 transitions. [2022-11-03 04:09:38,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:09:38,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:09:38,798 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:09:38,833 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (123)] Ended with exit code 0 [2022-11-03 04:09:39,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (122)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:39,221 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (121)] Forceful destruction successful, exit code 0 [2022-11-03 04:09:39,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 123 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,122 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,121 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:09:39,399 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:09:39,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:09:39,400 INFO L85 PathProgramCache]: Analyzing trace with hash -89674836, now seen corresponding path program 1 times [2022-11-03 04:09:39,401 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:09:39,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [553810953] [2022-11-03 04:09:39,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:39,402 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:09:39,402 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:09:39,403 INFO L229 MonitoredProcess]: Starting monitored process 124 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:09:39,404 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (124)] Waiting until timeout for monitored process [2022-11-03 04:09:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:40,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:09:40,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:41,332 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 165 proven. 66 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:09:41,333 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:41,821 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:09:41,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [553810953] [2022-11-03 04:09:41,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [553810953] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:41,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [466912644] [2022-11-03 04:09:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:41,822 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:09:41,823 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:09:41,825 INFO L229 MonitoredProcess]: Starting monitored process 125 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:09:41,827 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (125)] Waiting until timeout for monitored process [2022-11-03 04:09:43,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:43,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:09:43,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:44,606 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 165 proven. 66 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:09:44,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:45,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [466912644] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:45,105 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662749745] [2022-11-03 04:09:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:09:45,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:09:45,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:09:45,107 INFO L229 MonitoredProcess]: Starting monitored process 126 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:09:45,108 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Waiting until timeout for monitored process [2022-11-03 04:09:45,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:09:45,728 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:09:45,732 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:09:48,116 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 26 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:09:48,116 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:09:48,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662749745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:09:48,301 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:09:48,302 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 13 [2022-11-03 04:09:48,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947698408] [2022-11-03 04:09:48,302 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:09:48,302 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 04:09:48,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:09:48,303 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 04:09:48,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:09:48,303 INFO L87 Difference]: Start difference. First operand 9606 states and 11395 transitions. Second operand has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:10:00,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:00,128 INFO L93 Difference]: Finished difference Result 29590 states and 35322 transitions. [2022-11-03 04:10:00,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2022-11-03 04:10:00,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 04:10:00,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:00,146 INFO L225 Difference]: With dead ends: 29590 [2022-11-03 04:10:00,146 INFO L226 Difference]: Without dead ends: 20293 [2022-11-03 04:10:00,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1129 GetRequests, 1061 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1103 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1202, Invalid=3490, Unknown=0, NotChecked=0, Total=4692 [2022-11-03 04:10:00,150 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 2523 mSDsluCounter, 2984 mSDsCounter, 0 mSdLazyCounter, 1226 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2523 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:00,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2523 Valid, 3533 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1226 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-03 04:10:00,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20293 states. [2022-11-03 04:10:01,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20293 to 8382. [2022-11-03 04:10:01,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8382 states, 8245 states have (on average 1.1748938750758036) internal successors, (9687), 8245 states have internal predecessors, (9687), 135 states have call successors, (135), 1 states have call predecessors, (135), 1 states have return successors, (135), 135 states have call predecessors, (135), 135 states have call successors, (135) [2022-11-03 04:10:01,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8382 states to 8382 states and 9957 transitions. [2022-11-03 04:10:01,160 INFO L78 Accepts]: Start accepts. Automaton has 8382 states and 9957 transitions. Word has length 261 [2022-11-03 04:10:01,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:01,160 INFO L495 AbstractCegarLoop]: Abstraction has 8382 states and 9957 transitions. [2022-11-03 04:10:01,161 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 27.153846153846153) internal successors, (353), 13 states have internal predecessors, (353), 4 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:10:01,161 INFO L276 IsEmpty]: Start isEmpty. Operand 8382 states and 9957 transitions. [2022-11-03 04:10:01,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:10:01,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:01,166 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:01,195 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (124)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:01,418 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (126)] Ended with exit code 0 [2022-11-03 04:10:01,599 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (125)] Ended with exit code 0 [2022-11-03 04:10:01,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 124 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,126 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,125 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:10:01,790 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:01,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2060749230, now seen corresponding path program 1 times [2022-11-03 04:10:01,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:01,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [41660943] [2022-11-03 04:10:01,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:01,792 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:01,792 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:01,793 INFO L229 MonitoredProcess]: Starting monitored process 127 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:01,796 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (127)] Waiting until timeout for monitored process [2022-11-03 04:10:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:02,549 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 69 conjunts are in the unsatisfiable core [2022-11-03 04:10:02,557 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:06,197 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 182 proven. 73 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-03 04:10:06,197 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:07,926 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:07,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [41660943] [2022-11-03 04:10:07,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [41660943] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:07,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1290886941] [2022-11-03 04:10:07,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:07,926 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:10:07,927 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:10:07,928 INFO L229 MonitoredProcess]: Starting monitored process 128 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:10:07,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (128)] Waiting until timeout for monitored process [2022-11-03 04:10:09,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:09,368 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 25 conjunts are in the unsatisfiable core [2022-11-03 04:10:09,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:11,410 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 143 proven. 88 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-03 04:10:11,411 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:13,012 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1290886941] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:13,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1461005895] [2022-11-03 04:10:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:13,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:13,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:13,014 INFO L229 MonitoredProcess]: Starting monitored process 129 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:13,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Waiting until timeout for monitored process [2022-11-03 04:10:13,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:13,627 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:10:13,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:16,235 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 12 proven. 30 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:10:16,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:16,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1461005895] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:16,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:16,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 11, 7] total 34 [2022-11-03 04:10:16,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1244242026] [2022-11-03 04:10:16,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:16,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-03 04:10:16,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:16,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-03 04:10:16,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=2204, Unknown=0, NotChecked=0, Total=2352 [2022-11-03 04:10:16,630 INFO L87 Difference]: Start difference. First operand 8382 states and 9957 transitions. Second operand has 34 states, 32 states have (on average 16.71875) internal successors, (535), 34 states have internal predecessors, (535), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-03 04:10:46,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:10:46,382 INFO L93 Difference]: Finished difference Result 24508 states and 29465 transitions. [2022-11-03 04:10:46,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2022-11-03 04:10:46,382 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 16.71875) internal successors, (535), 34 states have internal predecessors, (535), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) Word has length 261 [2022-11-03 04:10:46,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:10:46,395 INFO L225 Difference]: With dead ends: 24508 [2022-11-03 04:10:46,395 INFO L226 Difference]: Without dead ends: 16462 [2022-11-03 04:10:46,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1171 GetRequests, 1031 SyntacticMatches, 0 SemanticMatches, 140 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 4177 ImplicationChecksByTransitivity, 24.0s TimeCoverageRelationStatistics Valid=3109, Invalid=16913, Unknown=0, NotChecked=0, Total=20022 [2022-11-03 04:10:46,400 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 3143 mSDsluCounter, 11746 mSDsCounter, 0 mSdLazyCounter, 3919 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3146 SdHoareTripleChecker+Valid, 12225 SdHoareTripleChecker+Invalid, 6140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 3919 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1874 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 04:10:46,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3146 Valid, 12225 Invalid, 6140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 3919 Invalid, 0 Unknown, 1874 Unchecked, 5.8s Time] [2022-11-03 04:10:46,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16462 states. [2022-11-03 04:10:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16462 to 10643. [2022-11-03 04:10:47,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10643 states, 10461 states have (on average 1.180479877640761) internal successors, (12349), 10461 states have internal predecessors, (12349), 180 states have call successors, (180), 1 states have call predecessors, (180), 1 states have return successors, (180), 180 states have call predecessors, (180), 180 states have call successors, (180) [2022-11-03 04:10:47,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10643 states to 10643 states and 12709 transitions. [2022-11-03 04:10:47,827 INFO L78 Accepts]: Start accepts. Automaton has 10643 states and 12709 transitions. Word has length 261 [2022-11-03 04:10:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:10:47,827 INFO L495 AbstractCegarLoop]: Abstraction has 10643 states and 12709 transitions. [2022-11-03 04:10:47,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 16.71875) internal successors, (535), 34 states have internal predecessors, (535), 8 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (18), 7 states have call predecessors, (18), 8 states have call successors, (18) [2022-11-03 04:10:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 10643 states and 12709 transitions. [2022-11-03 04:10:47,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:10:47,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:10:47,834 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:10:47,864 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (129)] Ended with exit code 0 [2022-11-03 04:10:48,056 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (127)] Forceful destruction successful, exit code 0 [2022-11-03 04:10:48,243 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (128)] Ended with exit code 0 [2022-11-03 04:10:48,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 129 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,127 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,128 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:10:48,435 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:10:48,435 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:10:48,435 INFO L85 PathProgramCache]: Analyzing trace with hash -2076214038, now seen corresponding path program 1 times [2022-11-03 04:10:48,436 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:10:48,437 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [472873484] [2022-11-03 04:10:48,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:48,437 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:10:48,437 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:10:48,438 INFO L229 MonitoredProcess]: Starting monitored process 130 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:10:48,439 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (130)] Waiting until timeout for monitored process [2022-11-03 04:10:49,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:49,223 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 04:10:49,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:51,381 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 36 proven. 123 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:10:51,382 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:51,457 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:10:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [472873484] [2022-11-03 04:10:51,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [472873484] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:51,457 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1902376458] [2022-11-03 04:10:51,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:51,457 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:10:51,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:10:51,458 INFO L229 MonitoredProcess]: Starting monitored process 131 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:10:51,460 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (131)] Waiting until timeout for monitored process [2022-11-03 04:10:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:52,827 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 04:10:52,831 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:55,397 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 36 proven. 123 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:10:55,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:55,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1902376458] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [930786562] [2022-11-03 04:10:55,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:10:55,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:10:55,430 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:10:55,431 INFO L229 MonitoredProcess]: Starting monitored process 132 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:10:55,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Waiting until timeout for monitored process [2022-11-03 04:10:55,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:10:55,998 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:10:56,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:10:59,378 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:10:59,378 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:10:59,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [930786562] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:10:59,581 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:10:59,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 7] total 22 [2022-11-03 04:10:59,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102197884] [2022-11-03 04:10:59,582 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:10:59,582 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-03 04:10:59,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:10:59,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-03 04:10:59,583 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2022-11-03 04:10:59,583 INFO L87 Difference]: Start difference. First operand 10643 states and 12709 transitions. Second operand has 22 states, 22 states have (on average 16.09090909090909) internal successors, (354), 22 states have internal predecessors, (354), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 04:11:09,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:09,294 INFO L93 Difference]: Finished difference Result 30694 states and 36599 transitions. [2022-11-03 04:11:09,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-11-03 04:11:09,296 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 16.09090909090909) internal successors, (354), 22 states have internal predecessors, (354), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 261 [2022-11-03 04:11:09,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:09,312 INFO L225 Difference]: With dead ends: 30694 [2022-11-03 04:11:09,313 INFO L226 Difference]: Without dead ends: 20667 [2022-11-03 04:11:09,319 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 911 GetRequests, 843 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 787 ImplicationChecksByTransitivity, 5.6s TimeCoverageRelationStatistics Valid=1153, Invalid=3677, Unknown=0, NotChecked=0, Total=4830 [2022-11-03 04:11:09,320 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 4666 mSDsluCounter, 4114 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 198 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4666 SdHoareTripleChecker+Valid, 4543 SdHoareTripleChecker+Invalid, 2188 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 198 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1293 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:09,320 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4666 Valid, 4543 Invalid, 2188 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [198 Valid, 697 Invalid, 0 Unknown, 1293 Unchecked, 1.2s Time] [2022-11-03 04:11:09,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20667 states. [2022-11-03 04:11:10,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20667 to 10138. [2022-11-03 04:11:10,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10138 states, 9965 states have (on average 1.176818866031109) internal successors, (11727), 9965 states have internal predecessors, (11727), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 04:11:10,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10138 states to 10138 states and 12069 transitions. [2022-11-03 04:11:10,736 INFO L78 Accepts]: Start accepts. Automaton has 10138 states and 12069 transitions. Word has length 261 [2022-11-03 04:11:10,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:10,737 INFO L495 AbstractCegarLoop]: Abstraction has 10138 states and 12069 transitions. [2022-11-03 04:11:10,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 16.09090909090909) internal successors, (354), 22 states have internal predecessors, (354), 5 states have call successors, (15), 1 states have call predecessors, (15), 1 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-11-03 04:11:10,738 INFO L276 IsEmpty]: Start isEmpty. Operand 10138 states and 12069 transitions. [2022-11-03 04:11:10,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:11:10,742 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:10,742 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:10,774 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (132)] Ended with exit code 0 [2022-11-03 04:11:10,964 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (130)] Ended with exit code 0 [2022-11-03 04:11:11,152 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (131)] Ended with exit code 0 [2022-11-03 04:11:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 132 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,130 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3,131 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:11,343 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:11,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1671886998, now seen corresponding path program 1 times [2022-11-03 04:11:11,345 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:11,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2039766373] [2022-11-03 04:11:11,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:11,346 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:11,346 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:11,347 INFO L229 MonitoredProcess]: Starting monitored process 133 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:11,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (133)] Waiting until timeout for monitored process [2022-11-03 04:11:12,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:12,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 04:11:12,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:14,372 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:11:14,372 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:14,458 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:14,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2039766373] [2022-11-03 04:11:14,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2039766373] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:14,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [174075330] [2022-11-03 04:11:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:14,459 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:14,459 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:14,461 INFO L229 MonitoredProcess]: Starting monitored process 134 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:14,469 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (134)] Waiting until timeout for monitored process [2022-11-03 04:11:15,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:15,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 04:11:15,955 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:17,985 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:11:17,985 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:18,024 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [174075330] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:18,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [283432454] [2022-11-03 04:11:18,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:18,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:18,025 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:18,026 INFO L229 MonitoredProcess]: Starting monitored process 135 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:18,027 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Waiting until timeout for monitored process [2022-11-03 04:11:18,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:18,625 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 04:11:18,629 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:21,048 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:11:21,048 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:21,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [283432454] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:21,089 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:11:21,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 17 [2022-11-03 04:11:21,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489146173] [2022-11-03 04:11:21,090 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:11:21,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 04:11:21,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:21,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 04:11:21,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:11:21,091 INFO L87 Difference]: Start difference. First operand 10138 states and 12069 transitions. Second operand has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:11:24,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:24,476 INFO L93 Difference]: Finished difference Result 16949 states and 20274 transitions. [2022-11-03 04:11:24,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 04:11:24,477 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 04:11:24,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:24,490 INFO L225 Difference]: With dead ends: 16949 [2022-11-03 04:11:24,490 INFO L226 Difference]: Without dead ends: 13208 [2022-11-03 04:11:24,495 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 887 GetRequests, 849 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=356, Invalid=1204, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 04:11:24,495 INFO L413 NwaCegarLoop]: 209 mSDtfsCounter, 1717 mSDsluCounter, 1996 mSDsCounter, 0 mSdLazyCounter, 284 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1717 SdHoareTripleChecker+Valid, 2205 SdHoareTripleChecker+Invalid, 1142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 807 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:24,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1717 Valid, 2205 Invalid, 1142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 284 Invalid, 0 Unknown, 807 Unchecked, 0.5s Time] [2022-11-03 04:11:24,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13208 states. [2022-11-03 04:11:25,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13208 to 10142. [2022-11-03 04:11:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10142 states, 9969 states have (on average 1.1768482295114857) internal successors, (11732), 9969 states have internal predecessors, (11732), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 04:11:25,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10142 states to 10142 states and 12074 transitions. [2022-11-03 04:11:25,896 INFO L78 Accepts]: Start accepts. Automaton has 10142 states and 12074 transitions. Word has length 261 [2022-11-03 04:11:25,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:25,897 INFO L495 AbstractCegarLoop]: Abstraction has 10142 states and 12074 transitions. [2022-11-03 04:11:25,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:11:25,897 INFO L276 IsEmpty]: Start isEmpty. Operand 10142 states and 12074 transitions. [2022-11-03 04:11:25,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:11:25,901 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:25,902 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:25,933 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (135)] Ended with exit code 0 [2022-11-03 04:11:26,112 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (134)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:26,323 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (133)] Ended with exit code 0 [2022-11-03 04:11:26,502 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 135 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,134 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,133 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:11:26,503 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:26,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:26,503 INFO L85 PathProgramCache]: Analyzing trace with hash -1882745238, now seen corresponding path program 1 times [2022-11-03 04:11:26,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:26,505 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1758131429] [2022-11-03 04:11:26,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:26,505 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:26,505 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:26,507 INFO L229 MonitoredProcess]: Starting monitored process 136 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:26,549 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (136)] Waiting until timeout for monitored process [2022-11-03 04:11:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:27,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 04:11:27,302 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:29,484 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 24 proven. 135 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:11:29,484 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:29,591 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:29,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1758131429] [2022-11-03 04:11:29,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1758131429] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:29,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1008938220] [2022-11-03 04:11:29,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:29,592 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:29,592 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:29,593 INFO L229 MonitoredProcess]: Starting monitored process 137 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:29,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (137)] Waiting until timeout for monitored process [2022-11-03 04:11:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:31,062 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 04:11:31,067 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:33,877 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 139 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:11:33,877 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:34,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1008938220] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:34,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2093231613] [2022-11-03 04:11:34,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:34,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:34,013 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:34,014 INFO L229 MonitoredProcess]: Starting monitored process 138 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:34,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Waiting until timeout for monitored process [2022-11-03 04:11:34,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:34,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-03 04:11:34,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:37,959 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 20 proven. 22 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-11-03 04:11:37,959 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:38,323 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2093231613] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:38,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:11:38,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 7] total 33 [2022-11-03 04:11:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483763565] [2022-11-03 04:11:38,324 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:11:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-11-03 04:11:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:11:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-11-03 04:11:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=1314, Unknown=0, NotChecked=0, Total=1406 [2022-11-03 04:11:38,326 INFO L87 Difference]: Start difference. First operand 10142 states and 12074 transitions. Second operand has 33 states, 33 states have (on average 16.666666666666668) internal successors, (550), 33 states have internal predecessors, (550), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 04:11:49,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:11:49,223 INFO L93 Difference]: Finished difference Result 29458 states and 35158 transitions. [2022-11-03 04:11:49,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-03 04:11:49,223 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 16.666666666666668) internal successors, (550), 33 states have internal predecessors, (550), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) Word has length 261 [2022-11-03 04:11:49,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:11:49,241 INFO L225 Difference]: With dead ends: 29458 [2022-11-03 04:11:49,241 INFO L226 Difference]: Without dead ends: 19721 [2022-11-03 04:11:49,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 913 GetRequests, 838 SyntacticMatches, 0 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 694 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=1189, Invalid=4663, Unknown=0, NotChecked=0, Total=5852 [2022-11-03 04:11:49,248 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 5965 mSDsluCounter, 6735 mSDsCounter, 0 mSdLazyCounter, 867 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5965 SdHoareTripleChecker+Valid, 7154 SdHoareTripleChecker+Invalid, 3342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 867 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2237 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:11:49,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5965 Valid, 7154 Invalid, 3342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 867 Invalid, 0 Unknown, 2237 Unchecked, 1.5s Time] [2022-11-03 04:11:49,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19721 states. [2022-11-03 04:11:50,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19721 to 10052. [2022-11-03 04:11:50,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10052 states, 9879 states have (on average 1.1753213888045349) internal successors, (11611), 9879 states have internal predecessors, (11611), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 04:11:50,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10052 states to 10052 states and 11953 transitions. [2022-11-03 04:11:50,692 INFO L78 Accepts]: Start accepts. Automaton has 10052 states and 11953 transitions. Word has length 261 [2022-11-03 04:11:50,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:11:50,692 INFO L495 AbstractCegarLoop]: Abstraction has 10052 states and 11953 transitions. [2022-11-03 04:11:50,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 16.666666666666668) internal successors, (550), 33 states have internal predecessors, (550), 7 states have call successors, (21), 1 states have call predecessors, (21), 1 states have return successors, (21), 7 states have call predecessors, (21), 7 states have call successors, (21) [2022-11-03 04:11:50,692 INFO L276 IsEmpty]: Start isEmpty. Operand 10052 states and 11953 transitions. [2022-11-03 04:11:50,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:11:50,696 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:11:50,696 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:11:50,706 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (137)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:50,926 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (138)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:51,118 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (136)] Forceful destruction successful, exit code 0 [2022-11-03 04:11:51,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 137 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,138 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,136 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:11:51,297 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:11:51,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:11:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1995038954, now seen corresponding path program 1 times [2022-11-03 04:11:51,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:11:51,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [855808473] [2022-11-03 04:11:51,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:51,299 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:11:51,299 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:11:51,300 INFO L229 MonitoredProcess]: Starting monitored process 139 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:11:51,310 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (139)] Waiting until timeout for monitored process [2022-11-03 04:11:52,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:52,117 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 04:11:52,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:54,254 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:11:54,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:54,354 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:11:54,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [855808473] [2022-11-03 04:11:54,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [855808473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:54,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [432554143] [2022-11-03 04:11:54,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:54,355 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:11:54,355 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:11:54,356 INFO L229 MonitoredProcess]: Starting monitored process 140 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:11:54,357 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (140)] Waiting until timeout for monitored process [2022-11-03 04:11:55,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:55,786 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 34 conjunts are in the unsatisfiable core [2022-11-03 04:11:55,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:11:58,275 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:11:58,275 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:11:58,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [432554143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:11:58,322 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [52659070] [2022-11-03 04:11:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:11:58,322 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:11:58,322 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:11:58,323 INFO L229 MonitoredProcess]: Starting monitored process 141 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:11:58,324 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Waiting until timeout for monitored process [2022-11-03 04:11:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:11:58,936 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 31 conjunts are in the unsatisfiable core [2022-11-03 04:11:58,940 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:00,885 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 16 proven. 143 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:12:00,885 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:00,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [52659070] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:12:00,935 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:12:00,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 17, 15] total 17 [2022-11-03 04:12:00,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319855202] [2022-11-03 04:12:00,936 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:12:00,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-03 04:12:00,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:12:00,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-03 04:12:00,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-11-03 04:12:00,938 INFO L87 Difference]: Start difference. First operand 10052 states and 11953 transitions. Second operand has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:12:04,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 04:12:04,076 INFO L93 Difference]: Finished difference Result 17497 states and 20860 transitions. [2022-11-03 04:12:04,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-11-03 04:12:04,076 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 261 [2022-11-03 04:12:04,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 04:12:04,085 INFO L225 Difference]: With dead ends: 17497 [2022-11-03 04:12:04,086 INFO L226 Difference]: Without dead ends: 11429 [2022-11-03 04:12:04,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 886 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=339, Invalid=1221, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 04:12:04,090 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 2053 mSDsluCounter, 1998 mSDsCounter, 0 mSdLazyCounter, 279 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2053 SdHoareTripleChecker+Valid, 2217 SdHoareTripleChecker+Invalid, 998 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 279 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 669 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 04:12:04,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2053 Valid, 2217 Invalid, 998 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 279 Invalid, 0 Unknown, 669 Unchecked, 0.5s Time] [2022-11-03 04:12:04,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11429 states. [2022-11-03 04:12:05,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11429 to 10058. [2022-11-03 04:12:05,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10058 states, 9885 states have (on average 1.1752149721800709) internal successors, (11617), 9885 states have internal predecessors, (11617), 171 states have call successors, (171), 1 states have call predecessors, (171), 1 states have return successors, (171), 171 states have call predecessors, (171), 171 states have call successors, (171) [2022-11-03 04:12:05,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10058 states to 10058 states and 11959 transitions. [2022-11-03 04:12:05,449 INFO L78 Accepts]: Start accepts. Automaton has 10058 states and 11959 transitions. Word has length 261 [2022-11-03 04:12:05,449 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 04:12:05,449 INFO L495 AbstractCegarLoop]: Abstraction has 10058 states and 11959 transitions. [2022-11-03 04:12:05,449 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 13.235294117647058) internal successors, (225), 17 states have internal predecessors, (225), 4 states have call successors, (12), 1 states have call predecessors, (12), 1 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-11-03 04:12:05,449 INFO L276 IsEmpty]: Start isEmpty. Operand 10058 states and 11959 transitions. [2022-11-03 04:12:05,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-11-03 04:12:05,453 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 04:12:05,454 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-03 04:12:05,483 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (141)] Ended with exit code 0 [2022-11-03 04:12:05,662 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (140)] Ended with exit code 0 [2022-11-03 04:12:05,874 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (139)] Ended with exit code 0 [2022-11-03 04:12:06,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 141 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true,140 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt,139 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 [2022-11-03 04:12:06,055 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 04:12:06,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 04:12:06,055 INFO L85 PathProgramCache]: Analyzing trace with hash -1883608726, now seen corresponding path program 1 times [2022-11-03 04:12:06,056 INFO L118 FreeRefinementEngine]: Executing refinement strategy WALRUS [2022-11-03 04:12:06,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1531097571] [2022-11-03 04:12:06,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:06,057 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-11-03 04:12:06,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat [2022-11-03 04:12:06,058 INFO L229 MonitoredProcess]: Starting monitored process 142 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-11-03 04:12:06,059 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/mathsat -unsat_core_generation=3 (142)] Waiting until timeout for monitored process [2022-11-03 04:12:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:06,818 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 56 conjunts are in the unsatisfiable core [2022-11-03 04:12:06,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:10,178 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 27 proven. 156 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-11-03 04:12:10,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:10,288 INFO L136 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2022-11-03 04:12:10,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1531097571] [2022-11-03 04:12:10,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1531097571] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:12:10,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1283663272] [2022-11-03 04:12:10,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:10,289 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-11-03 04:12:10,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 [2022-11-03 04:12:10,290 INFO L229 MonitoredProcess]: Starting monitored process 143 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-11-03 04:12:10,291 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/cvc4 --incremental --print-success --lang smt (143)] Waiting until timeout for monitored process [2022-11-03 04:12:11,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:11,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 37 conjunts are in the unsatisfiable core [2022-11-03 04:12:11,756 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:13,911 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 151 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-11-03 04:12:13,911 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:14,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1283663272] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:12:14,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [811875221] [2022-11-03 04:12:14,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 04:12:14,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 04:12:14,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 04:12:14,334 INFO L229 MonitoredProcess]: Starting monitored process 144 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 04:12:14,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c7a2718d-4840-4b8e-9e86-7058c76f6f6e/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (144)] Waiting until timeout for monitored process [2022-11-03 04:12:14,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 04:12:14,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 1440 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-03 04:12:14,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 04:12:16,366 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 8 proven. 50 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-11-03 04:12:16,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 04:12:16,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [811875221] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 04:12:16,628 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-03 04:12:16,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 9] total 36 [2022-11-03 04:12:16,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1454873168] [2022-11-03 04:12:16,629 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-03 04:12:16,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-03 04:12:16,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2022-11-03 04:12:16,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-03 04:12:16,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=1405, Unknown=0, NotChecked=0, Total=1560 [2022-11-03 04:12:16,631 INFO L87 Difference]: Start difference. First operand 10058 states and 11959 transitions. Second operand has 36 states, 35 states have (on average 13.2) internal successors, (462), 36 states have internal predecessors, (462), 8 states have call successors, (21), 1 states have call predecessors, (21), 2 states have return successors, (21), 8 states have call predecessors, (21), 8 states have call successors, (21)