./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF --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 32bit --witnessprinter.graph.data.programhash 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 02:35:03,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 02:35:03,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 02:35:03,199 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 02:35:03,200 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 02:35:03,204 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 02:35:03,206 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 02:35:03,208 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 02:35:03,211 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 02:35:03,219 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 02:35:03,220 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 02:35:03,222 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 02:35:03,223 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 02:35:03,226 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 02:35:03,229 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 02:35:03,236 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 02:35:03,238 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 02:35:03,239 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 02:35:03,245 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 02:35:03,250 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 02:35:03,255 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 02:35:03,256 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 02:35:03,260 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 02:35:03,261 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 02:35:03,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 02:35:03,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 02:35:03,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 02:35:03,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 02:35:03,276 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 02:35:03,277 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 02:35:03,278 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 02:35:03,279 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 02:35:03,281 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 02:35:03,283 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 02:35:03,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 02:35:03,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 02:35:03,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 02:35:03,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 02:35:03,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 02:35:03,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 02:35:03,288 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 02:35:03,289 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 02:35:03,333 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 02:35:03,337 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 02:35:03,338 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 02:35:03,338 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 02:35:03,339 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 02:35:03,339 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 02:35:03,339 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 02:35:03,339 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 02:35:03,340 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 02:35:03,340 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 02:35:03,341 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 02:35:03,341 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 02:35:03,342 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 02:35:03,342 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 02:35:03,342 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 02:35:03,342 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 02:35:03,343 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 02:35:03,343 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 02:35:03,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 02:35:03,344 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 02:35:03,344 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 02:35:03,344 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 02:35:03,344 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 02:35:03,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 02:35:03,345 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 02:35:03,345 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 02:35:03,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 02:35:03,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 02:35:03,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 02:35:03,347 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 02:35:03,348 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 02:35:03,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:35:03,348 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 02:35:03,349 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 02:35:03,349 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 02:35:03,349 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 02:35:03,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 02:35:03,349 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 02:35:03,350 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 02:35:03,350 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 02:35:03,350 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 806c9058928482f755246f30ce94bbbe3c870162d7ccdd45454f74a5441d158a [2021-11-13 02:35:03,580 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 02:35:03,601 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 02:35:03,604 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 02:35:03,605 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 02:35:03,606 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 02:35:03,607 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2021-11-13 02:35:03,663 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/data/d26abbdce/3832975de0434bc9bfebcaa0a2225ec6/FLAG066681096 [2021-11-13 02:35:04,762 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 02:35:04,762 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c [2021-11-13 02:35:04,809 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/data/d26abbdce/3832975de0434bc9bfebcaa0a2225ec6/FLAG066681096 [2021-11-13 02:35:05,097 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/data/d26abbdce/3832975de0434bc9bfebcaa0a2225ec6 [2021-11-13 02:35:05,101 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 02:35:05,104 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 02:35:05,107 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:05,108 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 02:35:05,112 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 02:35:05,113 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:05" (1/1) ... [2021-11-13 02:35:05,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c7247fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:05, skipping insertion in model container [2021-11-13 02:35:05,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:35:05" (1/1) ... [2021-11-13 02:35:05,123 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 02:35:05,379 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 02:35:07,611 WARN L228 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_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2021-11-13 02:35:07,654 WARN L228 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_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2021-11-13 02:35:07,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:07,913 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 02:35:09,106 WARN L228 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_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[377340,377353] [2021-11-13 02:35:09,115 WARN L228 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_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/sv-benchmarks/c/combinations/Problem05_label44+token_ring.05.cil-1.c[383339,383352] [2021-11-13 02:35:09,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 02:35:09,253 INFO L208 MainTranslator]: Completed translation [2021-11-13 02:35:09,253 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09 WrapperNode [2021-11-13 02:35:09,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 02:35:09,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 02:35:09,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 02:35:09,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 02:35:09,268 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:09,406 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:09,870 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 02:35:09,872 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 02:35:09,872 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 02:35:09,872 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 02:35:09,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:09,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:10,000 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:10,001 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:10,302 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:10,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:10,395 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:10,500 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 02:35:10,508 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 02:35:10,508 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 02:35:10,509 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 02:35:10,510 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (1/1) ... [2021-11-13 02:35:10,518 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 02:35:10,547 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:10,582 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 02:35:10,624 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 02:35:10,701 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 02:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-13 02:35:10,702 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-13 02:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-13 02:35:10,702 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-13 02:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-13 02:35:10,702 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-13 02:35:10,702 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-13 02:35:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-13 02:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-13 02:35:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-13 02:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-13 02:35:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-13 02:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 02:35:10,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 02:35:10,703 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 02:35:21,301 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 02:35:21,301 INFO L299 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-13 02:35:21,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:21 BoogieIcfgContainer [2021-11-13 02:35:21,307 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 02:35:21,309 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 02:35:21,309 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 02:35:21,313 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 02:35:21,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:35:05" (1/3) ... [2021-11-13 02:35:21,314 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a36e193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:21, skipping insertion in model container [2021-11-13 02:35:21,314 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:35:09" (2/3) ... [2021-11-13 02:35:21,315 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a36e193 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:35:21, skipping insertion in model container [2021-11-13 02:35:21,315 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:35:21" (3/3) ... [2021-11-13 02:35:21,316 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label44+token_ring.05.cil-1.c [2021-11-13 02:35:21,322 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 02:35:21,322 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-13 02:35:21,382 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 02:35:21,389 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 02:35:21,390 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-13 02:35:21,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 1754 states, 1726 states have (on average 1.97045191193511) internal successors, (3401), 1729 states have internal predecessors, (3401), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-13 02:35:21,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-13 02:35:21,455 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:21,455 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:21,456 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:21,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:21,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1042538554, now seen corresponding path program 1 times [2021-11-13 02:35:21,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:21,472 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553076967] [2021-11-13 02:35:21,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:21,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:21,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 02:35:21,761 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:21,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553076967] [2021-11-13 02:35:21,762 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553076967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:21,763 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:21,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 02:35:21,764 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [46732897] [2021-11-13 02:35:21,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:21,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:35:21,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:21,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:35:21,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:35:21,854 INFO L87 Difference]: Start difference. First operand has 1754 states, 1726 states have (on average 1.97045191193511) internal successors, (3401), 1729 states have internal predecessors, (3401), 19 states have call successors, (19), 6 states have call predecessors, (19), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 02:35:22,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:22,819 INFO L93 Difference]: Finished difference Result 3602 states and 7035 transitions. [2021-11-13 02:35:22,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:35:22,822 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 46 [2021-11-13 02:35:22,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:22,853 INFO L225 Difference]: With dead ends: 3602 [2021-11-13 02:35:22,854 INFO L226 Difference]: Without dead ends: 1847 [2021-11-13 02:35:22,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-13 02:35:22,866 INFO L933 BasicCegarLoop]: 3301 mSDtfsCounter, 3548 mSDsluCounter, 3497 mSDsCounter, 0 mSdLazyCounter, 614 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 516.16ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3548 SdHoareTripleChecker+Valid, 6532 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 40.85ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 705.63ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:22,867 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3548 Valid, 6532 Invalid, 628 Unknown, 0 Unchecked, 40.85ms Time], IncrementalHoareTripleChecker [14 Valid, 614 Invalid, 0 Unknown, 0 Unchecked, 705.63ms Time] [2021-11-13 02:35:22,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1847 states. [2021-11-13 02:35:23,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1847 to 1846. [2021-11-13 02:35:23,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1846 states, 1798 states have (on average 1.9443826473859844) internal successors, (3496), 1801 states have internal predecessors, (3496), 34 states have call successors, (34), 12 states have call predecessors, (34), 12 states have return successors, (34), 33 states have call predecessors, (34), 34 states have call successors, (34) [2021-11-13 02:35:23,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1846 states to 1846 states and 3564 transitions. [2021-11-13 02:35:23,044 INFO L78 Accepts]: Start accepts. Automaton has 1846 states and 3564 transitions. Word has length 46 [2021-11-13 02:35:23,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:23,045 INFO L470 AbstractCegarLoop]: Abstraction has 1846 states and 3564 transitions. [2021-11-13 02:35:23,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-13 02:35:23,045 INFO L276 IsEmpty]: Start isEmpty. Operand 1846 states and 3564 transitions. [2021-11-13 02:35:23,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:35:23,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:23,060 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-13 02:35:23,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 02:35:23,062 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:23,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:23,065 INFO L85 PathProgramCache]: Analyzing trace with hash -86924478, now seen corresponding path program 1 times [2021-11-13 02:35:23,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:23,065 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951648379] [2021-11-13 02:35:23,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:23,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:23,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:23,278 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:35:23,279 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:23,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951648379] [2021-11-13 02:35:23,280 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951648379] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:23,280 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [401512729] [2021-11-13 02:35:23,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:23,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:23,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:23,287 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:35:23,297 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-13 02:35:23,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:23,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 570 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:23,448 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:23,656 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2021-11-13 02:35:23,656 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:23,832 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-13 02:35:23,837 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [401512729] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:23,838 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:35:23,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 7 [2021-11-13 02:35:23,842 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031025164] [2021-11-13 02:35:23,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:23,843 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:23,843 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:23,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:23,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:23,844 INFO L87 Difference]: Start difference. First operand 1846 states and 3564 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:35:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:24,275 INFO L93 Difference]: Finished difference Result 2239 states and 4145 transitions. [2021-11-13 02:35:24,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:24,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2021-11-13 02:35:24,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:24,303 INFO L225 Difference]: With dead ends: 2239 [2021-11-13 02:35:24,303 INFO L226 Difference]: Without dead ends: 2039 [2021-11-13 02:35:24,306 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:24,307 INFO L933 BasicCegarLoop]: 3224 mSDtfsCounter, 3393 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 271.10ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3393 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.09ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 334.09ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:24,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3393 Valid, 3344 Invalid, 276 Unknown, 0 Unchecked, 13.09ms Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 334.09ms Time] [2021-11-13 02:35:24,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2039 states. [2021-11-13 02:35:24,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2039 to 2035. [2021-11-13 02:35:24,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2035 states, 1947 states have (on average 1.9049820236260915) internal successors, (3709), 1951 states have internal predecessors, (3709), 62 states have call successors, (62), 24 states have call predecessors, (62), 24 states have return successors, (62), 60 states have call predecessors, (62), 62 states have call successors, (62) [2021-11-13 02:35:24,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2035 states to 2035 states and 3833 transitions. [2021-11-13 02:35:24,403 INFO L78 Accepts]: Start accepts. Automaton has 2035 states and 3833 transitions. Word has length 87 [2021-11-13 02:35:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:24,404 INFO L470 AbstractCegarLoop]: Abstraction has 2035 states and 3833 transitions. [2021-11-13 02:35:24,404 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 2 states have internal predecessors, (63), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:35:24,405 INFO L276 IsEmpty]: Start isEmpty. Operand 2035 states and 3833 transitions. [2021-11-13 02:35:24,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:35:24,408 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:24,409 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-13 02:35:24,448 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:24,630 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable1 [2021-11-13 02:35:24,631 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:24,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:24,631 INFO L85 PathProgramCache]: Analyzing trace with hash -1115996348, now seen corresponding path program 1 times [2021-11-13 02:35:24,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:24,632 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [198378749] [2021-11-13 02:35:24,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:24,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:24,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:24,766 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:35:24,766 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:24,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [198378749] [2021-11-13 02:35:24,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [198378749] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:24,772 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [923550362] [2021-11-13 02:35:24,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:24,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:24,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:24,774 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:35:24,798 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-13 02:35:24,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:24,922 INFO L263 TraceCheckSpWp]: Trace formula consists of 564 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:24,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:25,079 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-13 02:35:25,079 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:25,238 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-13 02:35:25,239 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [923550362] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:25,239 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:35:25,239 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 7 [2021-11-13 02:35:25,240 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539004584] [2021-11-13 02:35:25,240 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:25,241 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:25,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:25,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:25,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:25,243 INFO L87 Difference]: Start difference. First operand 2035 states and 3833 transitions. Second operand has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:35:25,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:25,798 INFO L93 Difference]: Finished difference Result 2800 states and 4956 transitions. [2021-11-13 02:35:25,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:25,799 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2021-11-13 02:35:25,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:25,817 INFO L225 Difference]: With dead ends: 2800 [2021-11-13 02:35:25,817 INFO L226 Difference]: Without dead ends: 2411 [2021-11-13 02:35:25,820 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:25,821 INFO L933 BasicCegarLoop]: 3223 mSDtfsCounter, 3402 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 291.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3402 SdHoareTripleChecker+Valid, 3343 SdHoareTripleChecker+Invalid, 276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.50ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 353.45ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:25,822 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3402 Valid, 3343 Invalid, 276 Unknown, 0 Unchecked, 12.50ms Time], IncrementalHoareTripleChecker [2 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 353.45ms Time] [2021-11-13 02:35:25,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2411 states. [2021-11-13 02:35:25,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2411 to 2405. [2021-11-13 02:35:25,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2405 states, 2239 states have (on average 1.8414470745868692) internal successors, (4123), 2245 states have internal predecessors, (4123), 116 states have call successors, (116), 48 states have call predecessors, (116), 48 states have return successors, (116), 112 states have call predecessors, (116), 116 states have call successors, (116) [2021-11-13 02:35:25,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2405 states to 2405 states and 4355 transitions. [2021-11-13 02:35:25,936 INFO L78 Accepts]: Start accepts. Automaton has 2405 states and 4355 transitions. Word has length 87 [2021-11-13 02:35:25,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:25,937 INFO L470 AbstractCegarLoop]: Abstraction has 2405 states and 4355 transitions. [2021-11-13 02:35:25,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.0) internal successors, (54), 2 states have internal predecessors, (54), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:35:25,937 INFO L276 IsEmpty]: Start isEmpty. Operand 2405 states and 4355 transitions. [2021-11-13 02:35:25,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:35:25,941 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:25,941 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-13 02:35:25,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:26,154 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:26,155 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:26,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:26,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1837890174, now seen corresponding path program 1 times [2021-11-13 02:35:26,156 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:26,156 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415937218] [2021-11-13 02:35:26,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:26,156 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:26,223 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-13 02:35:26,224 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:26,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415937218] [2021-11-13 02:35:26,224 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415937218] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:26,224 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401996029] [2021-11-13 02:35:26,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:26,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:26,225 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:26,226 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:35:26,259 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-13 02:35:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:26,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 558 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:26,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:26,565 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:35:26,566 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:26,765 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 02:35:26,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401996029] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:26,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:35:26,766 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [5, 4] total 7 [2021-11-13 02:35:26,766 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450032507] [2021-11-13 02:35:26,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:26,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:26,767 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:26,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:26,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:26,767 INFO L87 Difference]: Start difference. First operand 2405 states and 4355 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:35:27,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:27,268 INFO L93 Difference]: Finished difference Result 3898 states and 6528 transitions. [2021-11-13 02:35:27,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:27,269 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 87 [2021-11-13 02:35:27,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:27,292 INFO L225 Difference]: With dead ends: 3898 [2021-11-13 02:35:27,292 INFO L226 Difference]: Without dead ends: 3139 [2021-11-13 02:35:27,297 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 177 GetRequests, 171 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:27,298 INFO L933 BasicCegarLoop]: 3198 mSDtfsCounter, 3399 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3399 SdHoareTripleChecker+Valid, 3318 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.53ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 373.57ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:27,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3399 Valid, 3318 Invalid, 273 Unknown, 0 Unchecked, 10.53ms Time], IncrementalHoareTripleChecker [2 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 373.57ms Time] [2021-11-13 02:35:27,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2021-11-13 02:35:27,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 3129. [2021-11-13 02:35:27,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3129 states, 2811 states have (on average 1.7527570259694059) internal successors, (4927), 2821 states have internal predecessors, (4927), 220 states have call successors, (220), 96 states have call predecessors, (220), 96 states have return successors, (220), 212 states have call predecessors, (220), 220 states have call successors, (220) [2021-11-13 02:35:27,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3129 states to 3129 states and 5367 transitions. [2021-11-13 02:35:27,454 INFO L78 Accepts]: Start accepts. Automaton has 3129 states and 5367 transitions. Word has length 87 [2021-11-13 02:35:27,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:27,455 INFO L470 AbstractCegarLoop]: Abstraction has 3129 states and 5367 transitions. [2021-11-13 02:35:27,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 2 states have internal predecessors, (57), 2 states have call successors, (7), 2 states have call predecessors, (7), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-13 02:35:27,455 INFO L276 IsEmpty]: Start isEmpty. Operand 3129 states and 5367 transitions. [2021-11-13 02:35:27,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-13 02:35:27,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:27,460 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 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] [2021-11-13 02:35:27,502 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:27,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:27,687 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:27,687 INFO L85 PathProgramCache]: Analyzing trace with hash -1471866876, now seen corresponding path program 1 times [2021-11-13 02:35:27,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:27,688 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319055660] [2021-11-13 02:35:27,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:27,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:27,797 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-11-13 02:35:27,797 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:27,798 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319055660] [2021-11-13 02:35:27,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319055660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:27,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:27,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:35:27,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1612493083] [2021-11-13 02:35:27,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:27,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:27,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:27,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:27,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:27,800 INFO L87 Difference]: Start difference. First operand 3129 states and 5367 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 02:35:28,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:28,384 INFO L93 Difference]: Finished difference Result 4283 states and 7048 transitions. [2021-11-13 02:35:28,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:28,385 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 87 [2021-11-13 02:35:28,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:28,412 INFO L225 Difference]: With dead ends: 4283 [2021-11-13 02:35:28,412 INFO L226 Difference]: Without dead ends: 3521 [2021-11-13 02:35:28,417 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:28,418 INFO L933 BasicCegarLoop]: 3252 mSDtfsCounter, 64 mSDsluCounter, 3425 mSDsCounter, 0 mSdLazyCounter, 496 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 357.43ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 6442 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.23ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 496 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 433.64ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:28,418 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 6442 Invalid, 496 Unknown, 0 Unchecked, 12.23ms Time], IncrementalHoareTripleChecker [0 Valid, 496 Invalid, 0 Unknown, 0 Unchecked, 433.64ms Time] [2021-11-13 02:35:28,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3521 states. [2021-11-13 02:35:28,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3521 to 3373. [2021-11-13 02:35:28,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3373 states, 3039 states have (on average 1.7476143468246133) internal successors, (5311), 3049 states have internal predecessors, (5311), 228 states have call successors, (228), 104 states have call predecessors, (228), 104 states have return successors, (228), 220 states have call predecessors, (228), 228 states have call successors, (228) [2021-11-13 02:35:28,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3373 states to 3373 states and 5767 transitions. [2021-11-13 02:35:28,596 INFO L78 Accepts]: Start accepts. Automaton has 3373 states and 5767 transitions. Word has length 87 [2021-11-13 02:35:28,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:28,597 INFO L470 AbstractCegarLoop]: Abstraction has 3373 states and 5767 transitions. [2021-11-13 02:35:28,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 2 states have call successors, (8), 1 states have call predecessors, (8), 1 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-11-13 02:35:28,598 INFO L276 IsEmpty]: Start isEmpty. Operand 3373 states and 5767 transitions. [2021-11-13 02:35:28,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 02:35:28,605 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:28,606 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:28,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 02:35:28,606 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:28,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:28,607 INFO L85 PathProgramCache]: Analyzing trace with hash 2012750831, now seen corresponding path program 1 times [2021-11-13 02:35:28,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:28,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476971116] [2021-11-13 02:35:28,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:28,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:28,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:28,677 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-13 02:35:28,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:28,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476971116] [2021-11-13 02:35:28,678 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476971116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:28,678 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:28,678 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:35:28,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017668506] [2021-11-13 02:35:28,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:28,679 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:28,679 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:28,680 INFO L87 Difference]: Start difference. First operand 3373 states and 5767 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 02:35:29,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:29,244 INFO L93 Difference]: Finished difference Result 6754 states and 10724 transitions. [2021-11-13 02:35:29,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:29,245 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 116 [2021-11-13 02:35:29,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:29,281 INFO L225 Difference]: With dead ends: 6754 [2021-11-13 02:35:29,281 INFO L226 Difference]: Without dead ends: 5027 [2021-11-13 02:35:29,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:29,293 INFO L933 BasicCegarLoop]: 3200 mSDtfsCounter, 3393 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 293.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3393 SdHoareTripleChecker+Valid, 3320 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.21ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 350.60ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:29,295 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3393 Valid, 3320 Invalid, 271 Unknown, 0 Unchecked, 10.21ms Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 350.60ms Time] [2021-11-13 02:35:29,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5027 states. [2021-11-13 02:35:29,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5027 to 5001. [2021-11-13 02:35:29,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5001 states, 4355 states have (on average 1.6512055109070034) internal successors, (7191), 4373 states have internal predecessors, (7191), 436 states have call successors, (436), 208 states have call predecessors, (436), 208 states have return successors, (436), 420 states have call predecessors, (436), 436 states have call successors, (436) [2021-11-13 02:35:29,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5001 states to 5001 states and 8063 transitions. [2021-11-13 02:35:29,588 INFO L78 Accepts]: Start accepts. Automaton has 5001 states and 8063 transitions. Word has length 116 [2021-11-13 02:35:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:29,591 INFO L470 AbstractCegarLoop]: Abstraction has 5001 states and 8063 transitions. [2021-11-13 02:35:29,592 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 02:35:29,592 INFO L276 IsEmpty]: Start isEmpty. Operand 5001 states and 8063 transitions. [2021-11-13 02:35:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-13 02:35:29,606 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:29,606 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:29,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 02:35:29,606 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:29,607 INFO L85 PathProgramCache]: Analyzing trace with hash 753246917, now seen corresponding path program 1 times [2021-11-13 02:35:29,607 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:29,607 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1886708648] [2021-11-13 02:35:29,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:29,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:29,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:29,673 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2021-11-13 02:35:29,674 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:29,674 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1886708648] [2021-11-13 02:35:29,674 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1886708648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:29,674 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 02:35:29,674 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 02:35:29,674 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965718821] [2021-11-13 02:35:29,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:29,675 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:35:29,675 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:29,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:35:29,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:29,676 INFO L87 Difference]: Start difference. First operand 5001 states and 8063 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 02:35:30,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:30,470 INFO L93 Difference]: Finished difference Result 11566 states and 17572 transitions. [2021-11-13 02:35:30,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:35:30,471 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 116 [2021-11-13 02:35:30,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:30,546 INFO L225 Difference]: With dead ends: 11566 [2021-11-13 02:35:30,546 INFO L226 Difference]: Without dead ends: 8211 [2021-11-13 02:35:30,560 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 02:35:30,562 INFO L933 BasicCegarLoop]: 3214 mSDtfsCounter, 3396 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 282.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3396 SdHoareTripleChecker+Valid, 3334 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.93ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 338.89ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:30,562 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3396 Valid, 3334 Invalid, 271 Unknown, 0 Unchecked, 9.93ms Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 338.89ms Time] [2021-11-13 02:35:30,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8211 states. [2021-11-13 02:35:31,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8211 to 8161. [2021-11-13 02:35:31,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8161 states, 6907 states have (on average 1.5623280729694513) internal successors, (10791), 6941 states have internal predecessors, (10791), 836 states have call successors, (836), 416 states have call predecessors, (836), 416 states have return successors, (836), 804 states have call predecessors, (836), 836 states have call successors, (836) [2021-11-13 02:35:31,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8161 states to 8161 states and 12463 transitions. [2021-11-13 02:35:31,069 INFO L78 Accepts]: Start accepts. Automaton has 8161 states and 12463 transitions. Word has length 116 [2021-11-13 02:35:31,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:31,069 INFO L470 AbstractCegarLoop]: Abstraction has 8161 states and 12463 transitions. [2021-11-13 02:35:31,069 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (9), 1 states have call predecessors, (9), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 02:35:31,070 INFO L276 IsEmpty]: Start isEmpty. Operand 8161 states and 12463 transitions. [2021-11-13 02:35:31,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 02:35:31,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:31,102 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:31,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 02:35:31,103 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:31,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:31,104 INFO L85 PathProgramCache]: Analyzing trace with hash -372485522, now seen corresponding path program 1 times [2021-11-13 02:35:31,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:31,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013053685] [2021-11-13 02:35:31,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:31,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:31,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 20 proven. 5 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:35:31,215 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:31,215 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013053685] [2021-11-13 02:35:31,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013053685] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:31,216 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [676510468] [2021-11-13 02:35:31,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:31,216 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:31,216 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:31,217 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:35:31,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-13 02:35:31,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:31,381 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:35:31,385 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:31,647 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 02:35:31,648 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:31,924 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:35:31,924 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [676510468] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:35:31,925 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:35:31,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-11-13 02:35:31,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073664713] [2021-11-13 02:35:31,925 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:35:31,926 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:35:31,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:35:31,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:35:31,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:31,927 INFO L87 Difference]: Start difference. First operand 8161 states and 12463 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:35:32,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:35:32,814 INFO L93 Difference]: Finished difference Result 14741 states and 21857 transitions. [2021-11-13 02:35:32,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:35:32,815 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 134 [2021-11-13 02:35:32,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:35:32,859 INFO L225 Difference]: With dead ends: 14741 [2021-11-13 02:35:32,860 INFO L226 Difference]: Without dead ends: 11411 [2021-11-13 02:35:32,875 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:35:32,876 INFO L933 BasicCegarLoop]: 3285 mSDtfsCounter, 138 mSDsluCounter, 6884 mSDsCounter, 0 mSdLazyCounter, 746 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 432.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 9697 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.81ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 526.92ms IncrementalHoareTripleChecker+Time [2021-11-13 02:35:32,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 9697 Invalid, 748 Unknown, 0 Unchecked, 19.81ms Time], IncrementalHoareTripleChecker [2 Valid, 746 Invalid, 0 Unknown, 0 Unchecked, 526.92ms Time] [2021-11-13 02:35:32,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11411 states. [2021-11-13 02:35:33,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11411 to 9393. [2021-11-13 02:35:33,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9393 states, 8043 states have (on average 1.5744125326370757) internal successors, (12663), 8077 states have internal predecessors, (12663), 884 states have call successors, (884), 464 states have call predecessors, (884), 464 states have return successors, (884), 852 states have call predecessors, (884), 884 states have call successors, (884) [2021-11-13 02:35:33,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9393 states to 9393 states and 14431 transitions. [2021-11-13 02:35:33,634 INFO L78 Accepts]: Start accepts. Automaton has 9393 states and 14431 transitions. Word has length 134 [2021-11-13 02:35:33,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:35:33,636 INFO L470 AbstractCegarLoop]: Abstraction has 9393 states and 14431 transitions. [2021-11-13 02:35:33,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:35:33,636 INFO L276 IsEmpty]: Start isEmpty. Operand 9393 states and 14431 transitions. [2021-11-13 02:35:33,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 02:35:33,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:35:33,665 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:35:33,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-13 02:35:33,890 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:33,891 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:35:33,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:35:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash 1991807475, now seen corresponding path program 2 times [2021-11-13 02:35:33,891 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:35:33,891 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606489799] [2021-11-13 02:35:33,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:35:33,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:35:33,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:35:33,988 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 10 proven. 37 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-11-13 02:35:33,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:35:33,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606489799] [2021-11-13 02:35:33,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606489799] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:35:33,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711373433] [2021-11-13 02:35:33,989 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:35:33,989 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:35:33,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:35:33,990 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:35:34,006 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-13 02:35:34,157 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-11-13 02:35:34,157 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:35:34,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 696 conjuncts, 24 conjunts are in the unsatisfiable core [2021-11-13 02:35:34,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:35:34,575 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 62 proven. 10 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-13 02:35:34,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:35:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 19 proven. 40 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-13 02:35:35,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711373433] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 02:35:35,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [551208994] [2021-11-13 02:35:35,319 INFO L159 IcfgInterpreter]: Started Sifa with 70 locations of interest [2021-11-13 02:35:35,319 INFO L166 IcfgInterpreter]: Building call graph [2021-11-13 02:35:35,323 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-13 02:35:35,328 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-13 02:35:35,329 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-13 02:35:35,497 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,504 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:35,504 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,505 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 49 [2021-11-13 02:35:35,506 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:35,506 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,507 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 12 [2021-11-13 02:35:35,515 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-13 02:35:35,543 INFO L446 ElimStorePlain]: Different costs {0=[|v_#length_9|], 21=[|v_#valid_10|]} [2021-11-13 02:35:35,565 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,566 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,578 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 9 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 16 [2021-11-13 02:35:35,578 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,579 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:35:35,580 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,580 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 16 [2021-11-13 02:35:35,580 INFO L550 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2021-11-13 02:35:35,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:35,623 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,631 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,632 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,635 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,646 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,649 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-13 02:35:35,654 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 30 [2021-11-13 02:35:35,655 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,657 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:35:35,658 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,659 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 21 [2021-11-13 02:35:35,659 INFO L550 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2021-11-13 02:35:35,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:35,689 INFO L628 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,699 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,710 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 237 [2021-11-13 02:35:35,804 INFO L550 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2021-11-13 02:35:35,805 INFO L247 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:262, output treesize:237 [2021-11-13 02:35:35,828 INFO L180 QuantifierPusher]: treesize reduction 8, result has 96.9 percent of original size [2021-11-13 02:35:35,841 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 232 [2021-11-13 02:35:35,853 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-11-13 02:35:35,873 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:35,880 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-11-13 02:35:35,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:35,908 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:35,950 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,159 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,182 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,394 INFO L180 QuantifierPusher]: treesize reduction 315, result has 51.8 percent of original size [2021-11-13 02:35:36,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 319 [2021-11-13 02:35:36,417 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-13 02:35:36,435 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,436 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-13 02:35:36,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:36,567 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:36,593 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 355 [2021-11-13 02:35:36,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:36,617 INFO L185 QuantifierPusher]: treesize reduction 48, result has 50.5 percent of original size 49 [2021-11-13 02:35:36,618 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:35:38,946 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:38,947 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:35:41,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,638 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,654 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:41,683 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-13 02:35:41,686 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-13 02:35:41,695 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,800 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:41,839 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 355 [2021-11-13 02:35:41,862 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:41,894 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 253 [2021-11-13 02:35:41,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:41,989 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,116 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,291 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,359 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,425 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,479 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:42,502 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-13 02:35:42,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,529 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,533 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:42,540 INFO L185 QuantifierPusher]: treesize reduction 5, result has 93.2 percent of original size 68 [2021-11-13 02:35:42,545 INFO L180 QuantifierPusher]: treesize reduction 5, result has 95.5 percent of original size [2021-11-13 02:35:42,550 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.0 percent of original size 96 [2021-11-13 02:35:42,556 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.4 percent of original size [2021-11-13 02:35:42,563 INFO L185 QuantifierPusher]: treesize reduction 5, result has 96.1 percent of original size 124 [2021-11-13 02:35:42,566 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,617 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,630 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:42,638 INFO L185 QuantifierPusher]: treesize reduction 5, result has 96.9 percent of original size 158 [2021-11-13 02:35:42,645 INFO L180 QuantifierPusher]: treesize reduction 5, result has 97.5 percent of original size [2021-11-13 02:35:42,651 INFO L185 QuantifierPusher]: treesize reduction 5, result has 97.4 percent of original size 186 [2021-11-13 02:35:42,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,706 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,709 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,712 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,713 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,717 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,718 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,761 INFO L180 QuantifierPusher]: treesize reduction 12, result has 91.0 percent of original size [2021-11-13 02:35:42,767 INFO L185 QuantifierPusher]: treesize reduction 5, result has 95.7 percent of original size 112 [2021-11-13 02:35:42,806 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.7 percent of original size [2021-11-13 02:35:42,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:42,831 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:42,833 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:35:42,849 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-11-13 02:35:42,863 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:42,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-13 02:35:42,917 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.7 percent of original size [2021-11-13 02:35:42,930 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:42,931 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:42,932 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:35:42,955 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-11-13 02:35:42,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:42,985 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,015 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,041 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,066 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,092 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,118 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,144 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,274 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,300 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:43,395 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:43,410 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-11-13 02:35:43,416 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:43,430 INFO L185 QuantifierPusher]: treesize reduction 48, result has 50.5 percent of original size 49 [2021-11-13 02:35:43,431 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:35:47,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:47,137 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:35:51,167 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,176 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,187 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-11-13 02:35:51,202 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,224 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-11-13 02:35:51,236 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,250 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 217 [2021-11-13 02:35:51,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,333 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,363 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,387 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,396 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 214 [2021-11-13 02:35:51,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,418 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-13 02:35:51,430 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,441 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 295 [2021-11-13 02:35:51,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,459 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 211 [2021-11-13 02:35:51,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 295 [2021-11-13 02:35:51,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,527 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,586 INFO L180 QuantifierPusher]: treesize reduction 14, result has 94.1 percent of original size [2021-11-13 02:35:51,598 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 220 [2021-11-13 02:35:51,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-13 02:35:51,636 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,648 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 243 [2021-11-13 02:35:51,660 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.6 percent of original size [2021-11-13 02:35:51,668 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 240 [2021-11-13 02:35:51,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,714 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,759 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:51,907 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,935 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 530 [2021-11-13 02:35:51,963 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:51,989 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 534 [2021-11-13 02:35:52,029 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.3 percent of original size [2021-11-13 02:35:52,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-11-13 02:35:52,115 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 525 [2021-11-13 02:35:52,197 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,201 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:52,218 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,235 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-11-13 02:35:52,268 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 484 [2021-11-13 02:35:52,283 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,296 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 606 [2021-11-13 02:35:52,310 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,316 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:52,326 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,339 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-11-13 02:35:52,364 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 484 [2021-11-13 02:35:52,378 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,392 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 606 [2021-11-13 02:35:52,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,467 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,468 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,470 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,473 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,474 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,475 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,476 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,477 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,540 INFO L180 QuantifierPusher]: treesize reduction 20, result has 92.3 percent of original size [2021-11-13 02:35:52,547 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:35:52,573 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,585 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 530 [2021-11-13 02:35:52,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,612 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 534 [2021-11-13 02:35:52,638 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.3 percent of original size [2021-11-13 02:35:52,661 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 540 [2021-11-13 02:35:52,678 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 525 [2021-11-13 02:35:52,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,778 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,780 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,781 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,786 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,802 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:52,834 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,837 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:52,847 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,860 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-11-13 02:35:52,883 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 484 [2021-11-13 02:35:52,898 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,911 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 606 [2021-11-13 02:35:52,925 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,928 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:52,938 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:52,988 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 429 [2021-11-13 02:35:53,014 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 484 [2021-11-13 02:35:53,028 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,041 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 606 [2021-11-13 02:35:53,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,102 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,103 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,108 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,123 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,141 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,166 INFO L180 QuantifierPusher]: treesize reduction 20, result has 92.3 percent of original size [2021-11-13 02:35:53,174 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:35:53,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,271 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,320 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.6 percent of original size [2021-11-13 02:35:53,334 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-11-13 02:35:53,342 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,349 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-13 02:35:53,360 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.7 percent of original size [2021-11-13 02:35:53,368 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-13 02:35:53,379 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,390 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:35:53,393 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,397 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-13 02:35:53,402 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.3 percent of original size [2021-11-13 02:35:53,407 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:53,407 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,409 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:35:53,417 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:35:53,419 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,422 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 19 [2021-11-13 02:35:53,427 INFO L180 QuantifierPusher]: treesize reduction 5, result has 96.3 percent of original size [2021-11-13 02:35:53,433 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:53,434 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,436 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:35:53,442 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:35:53,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,443 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,460 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-11-13 02:35:53,469 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,480 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:35:53,488 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,496 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-11-13 02:35:53,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,514 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,575 INFO L180 QuantifierPusher]: treesize reduction 18, result has 93.4 percent of original size [2021-11-13 02:35:53,589 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 246 [2021-11-13 02:35:53,599 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,607 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-11-13 02:35:53,615 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,624 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-11-13 02:35:53,634 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.8 percent of original size [2021-11-13 02:35:53,643 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-11-13 02:35:53,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:53,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,885 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 602 [2021-11-13 02:35:53,901 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:53,915 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 606 [2021-11-13 02:35:53,938 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.4 percent of original size [2021-11-13 02:35:53,958 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 616 [2021-11-13 02:35:53,977 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,001 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 597 [2021-11-13 02:35:54,026 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,028 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,029 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,032 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-13 02:35:54,069 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,079 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,093 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,105 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,118 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 461 [2021-11-13 02:35:54,130 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 461 [2021-11-13 02:35:54,142 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,154 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,166 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 449 [2021-11-13 02:35:54,188 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 960 [2021-11-13 02:35:54,204 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,219 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 678 [2021-11-13 02:35:54,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,237 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,239 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,241 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-13 02:35:54,279 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,290 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,303 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,315 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,328 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:54,338 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:54,350 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,361 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,373 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 449 [2021-11-13 02:35:54,394 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 960 [2021-11-13 02:35:54,410 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,424 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 678 [2021-11-13 02:35:54,427 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,498 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,501 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,505 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,509 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:54,581 INFO L180 QuantifierPusher]: treesize reduction 32, result has 89.0 percent of original size [2021-11-13 02:35:54,590 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-11-13 02:35:54,607 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,621 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 602 [2021-11-13 02:35:54,637 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,650 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 606 [2021-11-13 02:35:54,676 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.4 percent of original size [2021-11-13 02:35:54,702 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 616 [2021-11-13 02:35:54,719 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,743 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 597 [2021-11-13 02:35:54,767 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,768 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,769 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,772 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-13 02:35:54,807 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,818 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,830 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,841 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,854 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:54,864 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:54,876 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,886 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,897 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 449 [2021-11-13 02:35:54,917 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 960 [2021-11-13 02:35:54,932 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,946 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 678 [2021-11-13 02:35:54,961 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,963 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:54,964 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:54,967 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-13 02:35:55,003 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:55,012 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,019 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:55,030 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,042 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:55,052 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:55,064 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:55,074 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,090 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 449 [2021-11-13 02:35:55,108 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 960 [2021-11-13 02:35:55,123 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,137 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 678 [2021-11-13 02:35:55,139 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,213 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,215 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,220 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,221 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,222 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,223 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,224 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,298 INFO L180 QuantifierPusher]: treesize reduction 32, result has 89.0 percent of original size [2021-11-13 02:35:55,305 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-11-13 02:35:55,313 INFO L180 QuantifierPusher]: treesize reduction 267, result has 0.4 percent of original size [2021-11-13 02:35:55,314 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:35:55,328 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.7 percent of original size [2021-11-13 02:35:55,336 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 238 [2021-11-13 02:35:55,347 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,358 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:35:55,366 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,374 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-11-13 02:35:55,384 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,395 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:35:55,402 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,411 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-11-13 02:35:55,414 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,430 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,533 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,560 INFO L180 QuantifierPusher]: treesize reduction 18, result has 93.4 percent of original size [2021-11-13 02:35:55,567 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 246 [2021-11-13 02:35:55,579 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,586 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 257 [2021-11-13 02:35:55,593 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,601 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 261 [2021-11-13 02:35:55,610 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.8 percent of original size [2021-11-13 02:35:55,617 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 258 [2021-11-13 02:35:55,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,711 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,755 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:55,838 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,851 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 602 [2021-11-13 02:35:55,866 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,878 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 606 [2021-11-13 02:35:55,904 INFO L180 QuantifierPusher]: treesize reduction 4, result has 99.4 percent of original size [2021-11-13 02:35:55,929 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 616 [2021-11-13 02:35:55,947 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,969 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 597 [2021-11-13 02:35:55,993 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,995 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:55,996 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:55,999 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-13 02:35:56,035 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:56,046 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,058 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:56,069 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,082 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 461 [2021-11-13 02:35:56,092 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 461 [2021-11-13 02:35:56,104 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:56,112 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,121 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 449 [2021-11-13 02:35:56,140 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 960 [2021-11-13 02:35:56,156 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,170 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 678 [2021-11-13 02:35:56,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,187 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:56,188 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,190 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 65 [2021-11-13 02:35:56,227 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:56,237 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,250 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:56,257 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,265 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:56,271 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 465 [2021-11-13 02:35:56,279 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:56,285 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,293 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 449 [2021-11-13 02:35:56,306 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 960 [2021-11-13 02:35:56,316 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,324 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 678 [2021-11-13 02:35:56,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,397 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,399 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,403 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,407 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,411 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,432 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,451 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,481 INFO L180 QuantifierPusher]: treesize reduction 32, result has 89.0 percent of original size [2021-11-13 02:35:56,489 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 249 [2021-11-13 02:35:56,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,592 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,593 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,594 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,721 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,725 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,764 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.6 percent of original size [2021-11-13 02:35:56,770 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 235 [2021-11-13 02:35:56,778 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:56,800 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-13 02:35:56,809 INFO L180 QuantifierPusher]: treesize reduction 6, result has 97.6 percent of original size [2021-11-13 02:35:56,818 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 236 [2021-11-13 02:35:56,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,947 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:56,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,044 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,276 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,318 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,436 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,581 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:57,582 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:57,592 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:57,603 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-11-13 02:35:57,628 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 505 [2021-11-13 02:35:57,642 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:57,655 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 584 [2021-11-13 02:35:57,676 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:57,677 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:57,686 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:57,700 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 433 [2021-11-13 02:35:57,722 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 505 [2021-11-13 02:35:57,734 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:57,746 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 584 [2021-11-13 02:35:57,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,804 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,808 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,810 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,811 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,816 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,875 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,929 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,931 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,933 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,934 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,935 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,938 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,939 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,940 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,954 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:57,969 INFO L180 QuantifierPusher]: treesize reduction 14, result has 94.2 percent of original size [2021-11-13 02:35:57,975 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 224 [2021-11-13 02:35:57,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,143 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,266 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,332 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,428 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,437 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 533 [2021-11-13 02:35:58,451 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,458 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 537 [2021-11-13 02:35:58,480 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,495 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 525 [2021-11-13 02:35:58,508 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,565 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,572 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,573 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,586 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,651 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,654 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,657 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,668 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,684 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,688 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 239 [2021-11-13 02:35:58,695 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,696 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:35:58,706 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,713 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 430 [2021-11-13 02:35:58,730 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 496 [2021-11-13 02:35:58,740 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,750 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:35:58,761 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,773 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 247 [2021-11-13 02:35:58,784 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,795 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 265 [2021-11-13 02:35:58,797 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-13 02:35:58,805 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,871 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,887 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 355 [2021-11-13 02:35:58,890 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 6 [2021-11-13 02:35:58,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,898 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:35:58,953 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:58,966 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 229 [2021-11-13 02:35:58,971 INFO L197 IcfgInterpreter]: Interpreting procedure reset_delta_events with input of size 153 for LOIs [2021-11-13 02:35:58,990 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:35:59,006 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 403 [2021-11-13 02:35:59,009 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:36:07,601 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:36:07,602 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:36:18,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:23,208 WARN L227 SmtUtils]: Spent 1.08m on a formula simplification. DAG size of input: 4285 DAG size of output: 117 (called from [L 211] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.BasicPredicateFactory.xJunctTerm) [2021-11-13 02:37:23,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:23,219 INFO L197 IcfgInterpreter]: Interpreting procedure fire_delta_events with input of size 195 for LOIs [2021-11-13 02:37:23,235 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:23,251 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 511 [2021-11-13 02:37:23,254 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:37:34,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:34,304 WARN L137 XnfTransformerHelper]: expecting exponential blowup for input size 12 [2021-11-13 02:37:46,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,569 INFO L197 IcfgInterpreter]: Interpreting procedure update_channels with input of size 152 for LOIs [2021-11-13 02:37:46,571 INFO L197 IcfgInterpreter]: Interpreting procedure exists_runnable_thread with input of size 137 for LOIs [2021-11-13 02:37:46,581 INFO L197 IcfgInterpreter]: Interpreting procedure immediate_notify with input of size 139 for LOIs [2021-11-13 02:37:46,588 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:46,597 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:37:46,618 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size [2021-11-13 02:37:46,627 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:37:46,628 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:46,629 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:37:46,640 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-11-13 02:37:46,648 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:46,654 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:37:46,670 INFO L180 QuantifierPusher]: treesize reduction 5, result has 98.6 percent of original size [2021-11-13 02:37:46,681 WARN L197 QuantifierPusher]: Ignoring assumption. [2021-11-13 02:37:46,682 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:46,687 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-11-13 02:37:46,693 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 213 [2021-11-13 02:37:46,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,710 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,739 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,760 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,787 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,824 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:46,832 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 231 [2021-11-13 02:37:46,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,862 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,891 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,920 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-11-13 02:37:46,971 INFO L197 IcfgInterpreter]: Interpreting procedure activate_threads with input of size 184 for LOIs [2021-11-13 02:37:47,023 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:47,079 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1157 [2021-11-13 02:37:47,107 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:47,157 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1192 [2021-11-13 02:37:47,185 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:47,226 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1227 [2021-11-13 02:37:47,270 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:47,388 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1262 [2021-11-13 02:37:47,431 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:47,492 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1297 [2021-11-13 02:37:47,537 INFO L180 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-11-13 02:37:47,576 INFO L185 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1332 [2021-11-13 02:37:47,578 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-13 02:38:46,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSifa [551208994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 02:38:46,618 INFO L186 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2021-11-13 02:38:46,618 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [45] imperfect sequences [6, 7, 6] total 57 [2021-11-13 02:38:46,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744911878] [2021-11-13 02:38:46,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:38:46,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-11-13 02:38:46,619 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:38:46,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-11-13 02:38:46,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=479, Invalid=2713, Unknown=0, NotChecked=0, Total=3192 [2021-11-13 02:38:46,621 INFO L87 Difference]: Start difference. First operand 9393 states and 14431 transitions. Second operand has 46 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:44:32,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:32,867 INFO L93 Difference]: Finished difference Result 21824 states and 32951 transitions. [2021-11-13 02:44:32,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 303 states. [2021-11-13 02:44:32,883 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) Word has length 134 [2021-11-13 02:44:32,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:32,929 INFO L225 Difference]: With dead ends: 21824 [2021-11-13 02:44:32,929 INFO L226 Difference]: Without dead ends: 14053 [2021-11-13 02:44:32,976 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 710 GetRequests, 340 SyntacticMatches, 25 SemanticMatches, 345 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51976 ImplicationChecksByTransitivity, 311.8s TimeCoverageRelationStatistics Valid=9627, Invalid=110435, Unknown=0, NotChecked=0, Total=120062 [2021-11-13 02:44:32,976 INFO L933 BasicCegarLoop]: 3550 mSDtfsCounter, 2243 mSDsluCounter, 5682 mSDsCounter, 0 mSdLazyCounter, 67852 mSolverCounterSat, 1025 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82749.05ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2252 SdHoareTripleChecker+Valid, 9126 SdHoareTripleChecker+Invalid, 68877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 305.64ms SdHoareTripleChecker+Time, 1025 IncrementalHoareTripleChecker+Valid, 67852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91213.17ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:32,977 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2252 Valid, 9126 Invalid, 68877 Unknown, 0 Unchecked, 305.64ms Time], IncrementalHoareTripleChecker [1025 Valid, 67852 Invalid, 0 Unknown, 0 Unchecked, 91213.17ms Time] [2021-11-13 02:44:32,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14053 states. [2021-11-13 02:44:33,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14053 to 11059. [2021-11-13 02:44:33,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11059 states, 9563 states have (on average 1.5671860294886542) internal successors, (14987), 9596 states have internal predecessors, (14987), 996 states have call successors, (996), 498 states have call predecessors, (996), 498 states have return successors, (996), 965 states have call predecessors, (996), 996 states have call successors, (996) [2021-11-13 02:44:33,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 16979 transitions. [2021-11-13 02:44:33,751 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 16979 transitions. Word has length 134 [2021-11-13 02:44:33,752 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:33,752 INFO L470 AbstractCegarLoop]: Abstraction has 11059 states and 16979 transitions. [2021-11-13 02:44:33,752 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 39 states have (on average 1.564102564102564) internal successors, (61), 38 states have internal predecessors, (61), 8 states have call successors, (8), 6 states have call predecessors, (8), 6 states have return successors, (8), 7 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-13 02:44:33,753 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 16979 transitions. [2021-11-13 02:44:33,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2021-11-13 02:44:33,788 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:33,788 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:33,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:34,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:34,007 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:34,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:34,007 INFO L85 PathProgramCache]: Analyzing trace with hash -997305091, now seen corresponding path program 1 times [2021-11-13 02:44:34,007 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:34,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234421231] [2021-11-13 02:44:34,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:34,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:34,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:34,142 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 25 proven. 38 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2021-11-13 02:44:34,144 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:34,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234421231] [2021-11-13 02:44:34,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234421231] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:34,145 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1348187929] [2021-11-13 02:44:34,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:34,145 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:34,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:34,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:34,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-13 02:44:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:34,314 INFO L263 TraceCheckSpWp]: Trace formula consists of 775 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:44:34,318 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:34,604 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-13 02:44:34,605 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:34,932 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 57 proven. 16 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2021-11-13 02:44:34,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1348187929] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:34,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:44:34,933 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2021-11-13 02:44:34,933 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294896090] [2021-11-13 02:44:34,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:34,934 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:44:34,934 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:34,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:44:34,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:44:34,935 INFO L87 Difference]: Start difference. First operand 11059 states and 16979 transitions. Second operand has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 02:44:35,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:35,781 INFO L93 Difference]: Finished difference Result 15881 states and 24320 transitions. [2021-11-13 02:44:35,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:44:35,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 148 [2021-11-13 02:44:35,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:35,820 INFO L225 Difference]: With dead ends: 15881 [2021-11-13 02:44:35,820 INFO L226 Difference]: Without dead ends: 10769 [2021-11-13 02:44:35,840 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:44:35,840 INFO L933 BasicCegarLoop]: 3267 mSDtfsCounter, 121 mSDsluCounter, 3414 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 274.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 6445 SdHoareTripleChecker+Invalid, 501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.16ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 347.29ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:35,841 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 6445 Invalid, 501 Unknown, 0 Unchecked, 6.16ms Time], IncrementalHoareTripleChecker [2 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 347.29ms Time] [2021-11-13 02:44:35,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10769 states. [2021-11-13 02:44:36,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10769 to 10616. [2021-11-13 02:44:36,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10616 states, 9160 states have (on average 1.5525109170305678) internal successors, (14221), 9193 states have internal predecessors, (14221), 965 states have call successors, (965), 489 states have call predecessors, (965), 489 states have return successors, (965), 934 states have call predecessors, (965), 965 states have call successors, (965) [2021-11-13 02:44:36,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 16151 transitions. [2021-11-13 02:44:36,649 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 16151 transitions. Word has length 148 [2021-11-13 02:44:36,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:36,649 INFO L470 AbstractCegarLoop]: Abstraction has 10616 states and 16151 transitions. [2021-11-13 02:44:36,649 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.333333333333336) internal successors, (103), 3 states have internal predecessors, (103), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 02:44:36,650 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 16151 transitions. [2021-11-13 02:44:36,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-11-13 02:44:36,687 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:36,688 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:36,728 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-13 02:44:36,903 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable400 [2021-11-13 02:44:36,903 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:36,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:36,904 INFO L85 PathProgramCache]: Analyzing trace with hash 686343071, now seen corresponding path program 1 times [2021-11-13 02:44:36,904 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:36,904 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979606707] [2021-11-13 02:44:36,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:36,904 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:36,998 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 21 proven. 4 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:44:36,999 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:36,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979606707] [2021-11-13 02:44:36,999 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979606707] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:36,999 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993270577] [2021-11-13 02:44:36,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:37,000 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:37,000 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:37,001 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:37,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-13 02:44:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:37,172 INFO L263 TraceCheckSpWp]: Trace formula consists of 741 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:37,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:37,405 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-11-13 02:44:37,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 02:44:37,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993270577] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:37,680 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:44:37,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 4] imperfect sequences [5] total 7 [2021-11-13 02:44:37,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864676524] [2021-11-13 02:44:37,681 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:37,682 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:37,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:37,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:37,684 INFO L87 Difference]: Start difference. First operand 10616 states and 16151 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-13 02:44:38,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:38,581 INFO L93 Difference]: Finished difference Result 16328 states and 24076 transitions. [2021-11-13 02:44:38,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:44:38,581 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2021-11-13 02:44:38,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:38,622 INFO L225 Difference]: With dead ends: 16328 [2021-11-13 02:44:38,623 INFO L226 Difference]: Without dead ends: 12254 [2021-11-13 02:44:38,641 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 265 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:38,642 INFO L933 BasicCegarLoop]: 3217 mSDtfsCounter, 3414 mSDsluCounter, 3416 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 359.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3414 SdHoareTripleChecker+Valid, 6393 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.74ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 436.58ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:38,642 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3414 Valid, 6393 Invalid, 542 Unknown, 0 Unchecked, 10.74ms Time], IncrementalHoareTripleChecker [5 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 436.58ms Time] [2021-11-13 02:44:38,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12254 states. [2021-11-13 02:44:39,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12254 to 12254. [2021-11-13 02:44:39,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12254 states, 10611 states have (on average 1.5040995193666948) internal successors, (15960), 10644 states have internal predecessors, (15960), 1027 states have call successors, (1027), 614 states have call predecessors, (1027), 614 states have return successors, (1027), 996 states have call predecessors, (1027), 1027 states have call successors, (1027) [2021-11-13 02:44:39,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12254 states to 12254 states and 18014 transitions. [2021-11-13 02:44:39,372 INFO L78 Accepts]: Start accepts. Automaton has 12254 states and 18014 transitions. Word has length 134 [2021-11-13 02:44:39,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:39,373 INFO L470 AbstractCegarLoop]: Abstraction has 12254 states and 18014 transitions. [2021-11-13 02:44:39,373 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 3 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2021-11-13 02:44:39,373 INFO L276 IsEmpty]: Start isEmpty. Operand 12254 states and 18014 transitions. [2021-11-13 02:44:39,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 02:44:39,424 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:39,424 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:39,462 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:39,638 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable401 [2021-11-13 02:44:39,639 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:39,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:39,639 INFO L85 PathProgramCache]: Analyzing trace with hash 653648724, now seen corresponding path program 1 times [2021-11-13 02:44:39,639 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:39,639 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239605233] [2021-11-13 02:44:39,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:39,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:39,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:39,714 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 23 proven. 2 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:44:39,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:39,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239605233] [2021-11-13 02:44:39,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239605233] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:39,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [984300194] [2021-11-13 02:44:39,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:39,715 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:39,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:39,716 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:39,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-13 02:44:39,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:39,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:39,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:40,106 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 02:44:40,107 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:40,348 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:44:40,348 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [984300194] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:40,349 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:44:40,349 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-11-13 02:44:40,349 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1476225646] [2021-11-13 02:44:40,350 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:40,350 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:40,350 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:40,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:40,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:40,351 INFO L87 Difference]: Start difference. First operand 12254 states and 18014 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:44:41,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:41,287 INFO L93 Difference]: Finished difference Result 20502 states and 29616 transitions. [2021-11-13 02:44:41,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:44:41,287 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2021-11-13 02:44:41,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:41,351 INFO L225 Difference]: With dead ends: 20502 [2021-11-13 02:44:41,351 INFO L226 Difference]: Without dead ends: 15736 [2021-11-13 02:44:41,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:41,369 INFO L933 BasicCegarLoop]: 3260 mSDtfsCounter, 165 mSDsluCounter, 3442 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 289.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 6466 SdHoareTripleChecker+Invalid, 513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.86ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 353.31ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:41,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 6466 Invalid, 513 Unknown, 0 Unchecked, 5.86ms Time], IncrementalHoareTripleChecker [13 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 353.31ms Time] [2021-11-13 02:44:41,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15736 states. [2021-11-13 02:44:42,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15736 to 13946. [2021-11-13 02:44:42,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13946 states, 12159 states have (on average 1.5178879842092277) internal successors, (18456), 12192 states have internal predecessors, (18456), 1099 states have call successors, (1099), 686 states have call predecessors, (1099), 686 states have return successors, (1099), 1068 states have call predecessors, (1099), 1099 states have call successors, (1099) [2021-11-13 02:44:42,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13946 states to 13946 states and 20654 transitions. [2021-11-13 02:44:42,334 INFO L78 Accepts]: Start accepts. Automaton has 13946 states and 20654 transitions. Word has length 131 [2021-11-13 02:44:42,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:42,334 INFO L470 AbstractCegarLoop]: Abstraction has 13946 states and 20654 transitions. [2021-11-13 02:44:42,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:44:42,335 INFO L276 IsEmpty]: Start isEmpty. Operand 13946 states and 20654 transitions. [2021-11-13 02:44:42,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-13 02:44:42,369 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:42,369 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:42,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:42,582 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable402 [2021-11-13 02:44:42,583 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:42,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:42,583 INFO L85 PathProgramCache]: Analyzing trace with hash 580731930, now seen corresponding path program 1 times [2021-11-13 02:44:42,583 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:42,583 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628979387] [2021-11-13 02:44:42,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:42,584 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:42,653 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-11-13 02:44:42,653 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:42,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628979387] [2021-11-13 02:44:42,654 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628979387] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:42,654 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231128455] [2021-11-13 02:44:42,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:42,654 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:42,655 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:42,655 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:42,674 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-13 02:44:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:42,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 786 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:42,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:43,114 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 94 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-11-13 02:44:43,114 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:43,374 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 43 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-11-13 02:44:43,375 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231128455] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:43,375 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:44:43,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-11-13 02:44:43,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1501974843] [2021-11-13 02:44:43,375 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:43,376 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:43,376 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:43,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:43,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:43,377 INFO L87 Difference]: Start difference. First operand 13946 states and 20654 transitions. Second operand has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:44:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:44,525 INFO L93 Difference]: Finished difference Result 24558 states and 35796 transitions. [2021-11-13 02:44:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:44:44,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 149 [2021-11-13 02:44:44,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:44,602 INFO L225 Difference]: With dead ends: 24558 [2021-11-13 02:44:44,602 INFO L226 Difference]: Without dead ends: 18874 [2021-11-13 02:44:44,622 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:44,623 INFO L933 BasicCegarLoop]: 3275 mSDtfsCounter, 201 mSDsluCounter, 3454 mSDsCounter, 0 mSdLazyCounter, 504 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 324.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 6491 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.51ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 396.26ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:44,623 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [201 Valid, 6491 Invalid, 517 Unknown, 0 Unchecked, 10.51ms Time], IncrementalHoareTripleChecker [13 Valid, 504 Invalid, 0 Unknown, 0 Unchecked, 396.26ms Time] [2021-11-13 02:44:44,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18874 states. [2021-11-13 02:44:45,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18874 to 16412. [2021-11-13 02:44:45,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16412 states, 14409 states have (on average 1.5307099729335831) internal successors, (22056), 14442 states have internal predecessors, (22056), 1207 states have call successors, (1207), 794 states have call predecessors, (1207), 794 states have return successors, (1207), 1176 states have call predecessors, (1207), 1207 states have call successors, (1207) [2021-11-13 02:44:45,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16412 states to 16412 states and 24470 transitions. [2021-11-13 02:44:45,561 INFO L78 Accepts]: Start accepts. Automaton has 16412 states and 24470 transitions. Word has length 149 [2021-11-13 02:44:45,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:45,562 INFO L470 AbstractCegarLoop]: Abstraction has 16412 states and 24470 transitions. [2021-11-13 02:44:45,562 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 28.0) internal successors, (112), 4 states have internal predecessors, (112), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:44:45,562 INFO L276 IsEmpty]: Start isEmpty. Operand 16412 states and 24470 transitions. [2021-11-13 02:44:45,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-11-13 02:44:45,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:45,598 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:45,638 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:45,810 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable403,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:45,811 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:45,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:45,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1445531889, now seen corresponding path program 1 times [2021-11-13 02:44:45,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:45,811 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [606941510] [2021-11-13 02:44:45,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:45,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:45,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:45,884 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 22 proven. 3 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:44:45,884 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:45,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [606941510] [2021-11-13 02:44:45,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [606941510] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:45,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1605581404] [2021-11-13 02:44:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:45,885 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:45,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:45,886 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:45,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-13 02:44:46,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:46,053 INFO L263 TraceCheckSpWp]: Trace formula consists of 727 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 02:44:46,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:46,330 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 70 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-13 02:44:46,330 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:46,567 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-11-13 02:44:46,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1605581404] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-13 02:44:46,568 INFO L186 FreeRefinementEngine]: Found 2 perfect and 1 imperfect interpolant sequences. [2021-11-13 02:44:46,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [5] total 7 [2021-11-13 02:44:46,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135434551] [2021-11-13 02:44:46,568 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:46,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:46,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:46,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:46,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:46,570 INFO L87 Difference]: Start difference. First operand 16412 states and 24470 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:44:47,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:47,720 INFO L93 Difference]: Finished difference Result 28884 states and 42510 transitions. [2021-11-13 02:44:47,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 02:44:47,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2021-11-13 02:44:47,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:47,772 INFO L225 Difference]: With dead ends: 28884 [2021-11-13 02:44:47,772 INFO L226 Difference]: Without dead ends: 21994 [2021-11-13 02:44:47,787 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 260 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-11-13 02:44:47,788 INFO L933 BasicCegarLoop]: 3268 mSDtfsCounter, 183 mSDsluCounter, 3448 mSDsCounter, 0 mSdLazyCounter, 502 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 432.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 183 SdHoareTripleChecker+Valid, 6479 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.38ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 502 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 499.48ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:47,788 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [183 Valid, 6479 Invalid, 515 Unknown, 0 Unchecked, 6.38ms Time], IncrementalHoareTripleChecker [13 Valid, 502 Invalid, 0 Unknown, 0 Unchecked, 499.48ms Time] [2021-11-13 02:44:47,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21994 states. [2021-11-13 02:44:48,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21994 to 19868. [2021-11-13 02:44:48,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19868 states, 17541 states have (on average 1.5375406191209167) internal successors, (26970), 17574 states have internal predecessors, (26970), 1369 states have call successors, (1369), 956 states have call predecessors, (1369), 956 states have return successors, (1369), 1338 states have call predecessors, (1369), 1369 states have call successors, (1369) [2021-11-13 02:44:48,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19868 states to 19868 states and 29708 transitions. [2021-11-13 02:44:48,825 INFO L78 Accepts]: Start accepts. Automaton has 19868 states and 29708 transitions. Word has length 131 [2021-11-13 02:44:48,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:48,826 INFO L470 AbstractCegarLoop]: Abstraction has 19868 states and 29708 transitions. [2021-11-13 02:44:48,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 4 states have internal predecessors, (104), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 4 states have call predecessors, (14), 4 states have call successors, (14) [2021-11-13 02:44:48,826 INFO L276 IsEmpty]: Start isEmpty. Operand 19868 states and 29708 transitions. [2021-11-13 02:44:48,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-13 02:44:48,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:48,863 INFO L514 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:48,899 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:49,086 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable404,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:49,087 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:49,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1030568697, now seen corresponding path program 1 times [2021-11-13 02:44:49,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:49,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161344154] [2021-11-13 02:44:49,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:49,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:49,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:49,171 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 51 proven. 38 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-11-13 02:44:49,171 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:49,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161344154] [2021-11-13 02:44:49,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161344154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:49,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1411901748] [2021-11-13 02:44:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:49,172 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:49,173 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:49,173 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:49,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-13 02:44:49,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:49,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 818 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:44:49,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:49,681 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 144 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-13 02:44:49,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:50,017 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 76 proven. 4 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-11-13 02:44:50,017 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1411901748] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:50,017 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:44:50,018 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2021-11-13 02:44:50,018 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464455738] [2021-11-13 02:44:50,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:50,019 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:44:50,019 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:50,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:44:50,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:44:50,020 INFO L87 Difference]: Start difference. First operand 19868 states and 29708 transitions. Second operand has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 02:44:51,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:51,001 INFO L93 Difference]: Finished difference Result 30738 states and 45880 transitions. [2021-11-13 02:44:51,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:44:51,002 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 164 [2021-11-13 02:44:51,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:51,056 INFO L225 Difference]: With dead ends: 30738 [2021-11-13 02:44:51,056 INFO L226 Difference]: Without dead ends: 19441 [2021-11-13 02:44:51,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 334 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:44:51,082 INFO L933 BasicCegarLoop]: 3300 mSDtfsCounter, 110 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 292.92ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 6477 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.26ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 379.31ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:51,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 6477 Invalid, 507 Unknown, 0 Unchecked, 6.26ms Time], IncrementalHoareTripleChecker [2 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 379.31ms Time] [2021-11-13 02:44:51,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19441 states. [2021-11-13 02:44:52,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19441 to 19128. [2021-11-13 02:44:52,108 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19128 states, 16841 states have (on average 1.5224749124161272) internal successors, (25640), 16874 states have internal predecessors, (25640), 1339 states have call successors, (1339), 946 states have call predecessors, (1339), 946 states have return successors, (1339), 1308 states have call predecessors, (1339), 1339 states have call successors, (1339) [2021-11-13 02:44:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19128 states to 19128 states and 28318 transitions. [2021-11-13 02:44:52,149 INFO L78 Accepts]: Start accepts. Automaton has 19128 states and 28318 transitions. Word has length 164 [2021-11-13 02:44:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:52,149 INFO L470 AbstractCegarLoop]: Abstraction has 19128 states and 28318 transitions. [2021-11-13 02:44:52,149 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.666666666666664) internal successors, (125), 3 states have internal predecessors, (125), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 02:44:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 19128 states and 28318 transitions. [2021-11-13 02:44:52,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-13 02:44:52,181 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:52,181 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:52,224 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-11-13 02:44:52,406 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable405 [2021-11-13 02:44:52,407 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:52,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:52,407 INFO L85 PathProgramCache]: Analyzing trace with hash -855526008, now seen corresponding path program 1 times [2021-11-13 02:44:52,407 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:52,407 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489307036] [2021-11-13 02:44:52,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:52,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:52,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:52,475 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 38 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 02:44:52,475 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:52,475 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489307036] [2021-11-13 02:44:52,476 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489307036] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:52,476 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [804322166] [2021-11-13 02:44:52,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:52,476 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:52,476 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:52,477 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:52,506 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-13 02:44:52,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:52,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 750 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:44:52,638 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2021-11-13 02:44:52,898 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 33 proven. 8 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2021-11-13 02:44:53,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [804322166] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:53,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:44:53,158 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2021-11-13 02:44:53,158 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255998230] [2021-11-13 02:44:53,158 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:53,159 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:44:53,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:44:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:44:53,160 INFO L87 Difference]: Start difference. First operand 19128 states and 28318 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 02:44:54,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:54,100 INFO L93 Difference]: Finished difference Result 29432 states and 43556 transitions. [2021-11-13 02:44:54,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:44:54,100 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 136 [2021-11-13 02:44:54,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:54,137 INFO L225 Difference]: With dead ends: 29432 [2021-11-13 02:44:54,137 INFO L226 Difference]: Without dead ends: 19162 [2021-11-13 02:44:54,153 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:44:54,154 INFO L933 BasicCegarLoop]: 3293 mSDtfsCounter, 118 mSDsluCounter, 3413 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 280.84ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 118 SdHoareTripleChecker+Valid, 6470 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.22ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 344.99ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:54,154 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [118 Valid, 6470 Invalid, 505 Unknown, 0 Unchecked, 6.22ms Time], IncrementalHoareTripleChecker [2 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 344.99ms Time] [2021-11-13 02:44:54,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19162 states. [2021-11-13 02:44:55,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19162 to 18868. [2021-11-13 02:44:55,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18868 states, 16581 states have (on average 1.507267354200591) internal successors, (24992), 16614 states have internal predecessors, (24992), 1339 states have call successors, (1339), 946 states have call predecessors, (1339), 946 states have return successors, (1339), 1308 states have call predecessors, (1339), 1339 states have call successors, (1339) [2021-11-13 02:44:55,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18868 states to 18868 states and 27670 transitions. [2021-11-13 02:44:55,386 INFO L78 Accepts]: Start accepts. Automaton has 18868 states and 27670 transitions. Word has length 136 [2021-11-13 02:44:55,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:55,387 INFO L470 AbstractCegarLoop]: Abstraction has 18868 states and 27670 transitions. [2021-11-13 02:44:55,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2021-11-13 02:44:55,387 INFO L276 IsEmpty]: Start isEmpty. Operand 18868 states and 27670 transitions. [2021-11-13 02:44:55,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2021-11-13 02:44:55,428 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:55,428 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:55,470 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-11-13 02:44:55,650 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable406 [2021-11-13 02:44:55,651 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:44:55,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:44:55,651 INFO L85 PathProgramCache]: Analyzing trace with hash 1876516362, now seen corresponding path program 1 times [2021-11-13 02:44:55,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:44:55,651 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320202035] [2021-11-13 02:44:55,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:55,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:44:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:55,727 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 14 proven. 36 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 02:44:55,728 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:44:55,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320202035] [2021-11-13 02:44:55,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320202035] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:55,728 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1131940496] [2021-11-13 02:44:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:44:55,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:44:55,729 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:44:55,731 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:44:55,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-13 02:44:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:44:55,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 756 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-13 02:44:55,898 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:44:56,127 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 78 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2021-11-13 02:44:56,127 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:44:56,500 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 02:44:56,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1131940496] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:44:56,500 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:44:56,500 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 8 [2021-11-13 02:44:56,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736120279] [2021-11-13 02:44:56,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:44:56,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:44:56,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:44:56,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:44:56,503 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:44:56,503 INFO L87 Difference]: Start difference. First operand 18868 states and 27670 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 02:44:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:44:58,111 INFO L93 Difference]: Finished difference Result 52485 states and 75144 transitions. [2021-11-13 02:44:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:44:58,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 136 [2021-11-13 02:44:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:44:58,186 INFO L225 Difference]: With dead ends: 52485 [2021-11-13 02:44:58,186 INFO L226 Difference]: Without dead ends: 35330 [2021-11-13 02:44:58,216 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 272 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:44:58,216 INFO L933 BasicCegarLoop]: 3283 mSDtfsCounter, 3415 mSDsluCounter, 3656 mSDsCounter, 0 mSdLazyCounter, 543 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 309.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3415 SdHoareTripleChecker+Valid, 6670 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.47ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.25ms IncrementalHoareTripleChecker+Time [2021-11-13 02:44:58,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3415 Valid, 6670 Invalid, 546 Unknown, 0 Unchecked, 10.47ms Time], IncrementalHoareTripleChecker [3 Valid, 543 Invalid, 0 Unknown, 0 Unchecked, 377.25ms Time] [2021-11-13 02:44:58,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35330 states. [2021-11-13 02:44:59,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35330 to 35295. [2021-11-13 02:44:59,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35295 states, 30735 states have (on average 1.460972832275907) internal successors, (44903), 30831 states have internal predecessors, (44903), 2636 states have call successors, (2636), 1890 states have call predecessors, (2636), 1922 states have return successors, (2732), 2574 states have call predecessors, (2732), 2636 states have call successors, (2732) [2021-11-13 02:44:59,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35295 states to 35295 states and 50271 transitions. [2021-11-13 02:44:59,747 INFO L78 Accepts]: Start accepts. Automaton has 35295 states and 50271 transitions. Word has length 136 [2021-11-13 02:44:59,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:44:59,748 INFO L470 AbstractCegarLoop]: Abstraction has 35295 states and 50271 transitions. [2021-11-13 02:44:59,748 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 02:44:59,748 INFO L276 IsEmpty]: Start isEmpty. Operand 35295 states and 50271 transitions. [2021-11-13 02:44:59,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-11-13 02:44:59,797 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:44:59,797 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:44:59,835 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-13 02:45:00,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable407,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:00,011 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:45:00,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:00,011 INFO L85 PathProgramCache]: Analyzing trace with hash -160507203, now seen corresponding path program 1 times [2021-11-13 02:45:00,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:45:00,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512733487] [2021-11-13 02:45:00,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:00,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:45:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:00,108 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 37 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2021-11-13 02:45:00,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:45:00,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512733487] [2021-11-13 02:45:00,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512733487] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:00,109 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63850744] [2021-11-13 02:45:00,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:00,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:00,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:00,111 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:00,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-13 02:45:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:00,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 755 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:45:00,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:00,564 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-11-13 02:45:00,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 35 proven. 17 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-11-13 02:45:00,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [63850744] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:00,808 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:45:00,808 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2021-11-13 02:45:00,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297459308] [2021-11-13 02:45:00,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:00,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:45:00,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:45:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:45:00,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:45:00,810 INFO L87 Difference]: Start difference. First operand 35295 states and 50271 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:45:02,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:02,224 INFO L93 Difference]: Finished difference Result 44598 states and 63605 transitions. [2021-11-13 02:45:02,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:45:02,224 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) Word has length 137 [2021-11-13 02:45:02,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:02,299 INFO L225 Difference]: With dead ends: 44598 [2021-11-13 02:45:02,299 INFO L226 Difference]: Without dead ends: 34111 [2021-11-13 02:45:02,322 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 280 GetRequests, 274 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:45:02,323 INFO L933 BasicCegarLoop]: 3203 mSDtfsCounter, 34 mSDsluCounter, 3415 mSDsCounter, 0 mSdLazyCounter, 486 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 273.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 6384 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 331.95ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:02,324 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 6384 Invalid, 486 Unknown, 0 Unchecked, 5.62ms Time], IncrementalHoareTripleChecker [0 Valid, 486 Invalid, 0 Unknown, 0 Unchecked, 331.95ms Time] [2021-11-13 02:45:02,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34111 states. [2021-11-13 02:45:03,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34111 to 33743. [2021-11-13 02:45:03,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33743 states, 29343 states have (on average 1.473025934635177) internal successors, (43223), 29391 states have internal predecessors, (43223), 2572 states have call successors, (2572), 1826 states have call predecessors, (2572), 1826 states have return successors, (2572), 2526 states have call predecessors, (2572), 2572 states have call successors, (2572) [2021-11-13 02:45:03,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33743 states to 33743 states and 48367 transitions. [2021-11-13 02:45:03,978 INFO L78 Accepts]: Start accepts. Automaton has 33743 states and 48367 transitions. Word has length 137 [2021-11-13 02:45:03,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:03,979 INFO L470 AbstractCegarLoop]: Abstraction has 33743 states and 48367 transitions. [2021-11-13 02:45:03,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 3 states have call successors, (10), 3 states have call predecessors, (10), 2 states have return successors, (10), 2 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:45:03,979 INFO L276 IsEmpty]: Start isEmpty. Operand 33743 states and 48367 transitions. [2021-11-13 02:45:04,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-11-13 02:45:04,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:04,187 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:04,209 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:04,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable408,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:04,387 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:45:04,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:04,388 INFO L85 PathProgramCache]: Analyzing trace with hash -135245586, now seen corresponding path program 1 times [2021-11-13 02:45:04,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:45:04,388 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [36536154] [2021-11-13 02:45:04,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:04,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:45:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:04,453 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-13 02:45:04,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:45:04,453 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [36536154] [2021-11-13 02:45:04,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [36536154] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:04,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980018214] [2021-11-13 02:45:04,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:04,454 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:04,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:04,455 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:04,487 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-11-13 02:45:04,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:04,632 INFO L263 TraceCheckSpWp]: Trace formula consists of 774 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 02:45:04,635 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:04,869 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2021-11-13 02:45:04,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:05,219 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 21 proven. 37 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-13 02:45:05,219 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980018214] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:05,219 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:45:05,219 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 5] total 8 [2021-11-13 02:45:05,220 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580807720] [2021-11-13 02:45:05,220 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:05,220 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 02:45:05,220 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:45:05,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 02:45:05,221 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:45:05,221 INFO L87 Difference]: Start difference. First operand 33743 states and 48367 transitions. Second operand has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 02:45:07,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:07,660 INFO L93 Difference]: Finished difference Result 76848 states and 108566 transitions. [2021-11-13 02:45:07,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-13 02:45:07,661 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 139 [2021-11-13 02:45:07,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:07,767 INFO L225 Difference]: With dead ends: 76848 [2021-11-13 02:45:07,767 INFO L226 Difference]: Without dead ends: 44866 [2021-11-13 02:45:07,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 278 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2021-11-13 02:45:07,807 INFO L933 BasicCegarLoop]: 3188 mSDtfsCounter, 3659 mSDsluCounter, 6802 mSDsCounter, 0 mSdLazyCounter, 812 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 518.18ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3673 SdHoareTripleChecker+Valid, 9518 SdHoareTripleChecker+Invalid, 923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.63ms SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 627.87ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:07,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3673 Valid, 9518 Invalid, 923 Unknown, 0 Unchecked, 16.63ms Time], IncrementalHoareTripleChecker [111 Valid, 812 Invalid, 0 Unknown, 0 Unchecked, 627.87ms Time] [2021-11-13 02:45:07,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44866 states. [2021-11-13 02:45:09,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44866 to 44734. [2021-11-13 02:45:09,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 44734 states, 38581 states have (on average 1.4395686996189834) internal successors, (55540), 38653 states have internal predecessors, (55540), 3591 states have call successors, (3591), 2560 states have call predecessors, (3591), 2560 states have return successors, (3591), 3521 states have call predecessors, (3591), 3591 states have call successors, (3591) [2021-11-13 02:45:10,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44734 states to 44734 states and 62722 transitions. [2021-11-13 02:45:10,042 INFO L78 Accepts]: Start accepts. Automaton has 44734 states and 62722 transitions. Word has length 139 [2021-11-13 02:45:10,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:10,043 INFO L470 AbstractCegarLoop]: Abstraction has 44734 states and 62722 transitions. [2021-11-13 02:45:10,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 18.8) internal successors, (94), 6 states have internal predecessors, (94), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2021-11-13 02:45:10,043 INFO L276 IsEmpty]: Start isEmpty. Operand 44734 states and 62722 transitions. [2021-11-13 02:45:10,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-13 02:45:10,101 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:10,101 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:10,124 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:10,302 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable409,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:10,302 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:45:10,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:10,303 INFO L85 PathProgramCache]: Analyzing trace with hash 743994337, now seen corresponding path program 1 times [2021-11-13 02:45:10,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:45:10,303 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830107004] [2021-11-13 02:45:10,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:10,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:45:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:10,398 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 35 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-13 02:45:10,398 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:45:10,398 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830107004] [2021-11-13 02:45:10,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830107004] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:10,399 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295135862] [2021-11-13 02:45:10,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:10,399 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:10,400 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:10,400 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:10,402 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-11-13 02:45:10,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:10,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-13 02:45:10,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:10,791 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:45:10,791 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:11,123 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 32 proven. 13 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-11-13 02:45:11,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295135862] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:11,124 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:45:11,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 4] total 9 [2021-11-13 02:45:11,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581833088] [2021-11-13 02:45:11,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:11,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-13 02:45:11,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:45:11,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 02:45:11,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-13 02:45:11,126 INFO L87 Difference]: Start difference. First operand 44734 states and 62722 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 02:45:14,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:14,691 INFO L93 Difference]: Finished difference Result 120953 states and 166641 transitions. [2021-11-13 02:45:14,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 02:45:14,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 140 [2021-11-13 02:45:14,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:14,978 INFO L225 Difference]: With dead ends: 120953 [2021-11-13 02:45:14,978 INFO L226 Difference]: Without dead ends: 77972 [2021-11-13 02:45:15,053 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-13 02:45:15,053 INFO L933 BasicCegarLoop]: 3284 mSDtfsCounter, 3415 mSDsluCounter, 3676 mSDsCounter, 0 mSdLazyCounter, 550 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 310.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3415 SdHoareTripleChecker+Valid, 6686 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.51ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 550 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 380.77ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:15,054 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3415 Valid, 6686 Invalid, 555 Unknown, 0 Unchecked, 10.51ms Time], IncrementalHoareTripleChecker [5 Valid, 550 Invalid, 0 Unknown, 0 Unchecked, 380.77ms Time] [2021-11-13 02:45:15,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77972 states. [2021-11-13 02:45:19,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77972 to 77529. [2021-11-13 02:45:19,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77529 states, 66145 states have (on average 1.3883437901579863) internal successors, (91832), 66455 states have internal predecessors, (91832), 6556 states have call successors, (6556), 4658 states have call predecessors, (6556), 4826 states have return successors, (7572), 6416 states have call predecessors, (7572), 6556 states have call successors, (7572) [2021-11-13 02:45:19,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77529 states to 77529 states and 105960 transitions. [2021-11-13 02:45:19,679 INFO L78 Accepts]: Start accepts. Automaton has 77529 states and 105960 transitions. Word has length 140 [2021-11-13 02:45:19,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:19,680 INFO L470 AbstractCegarLoop]: Abstraction has 77529 states and 105960 transitions. [2021-11-13 02:45:19,680 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 4 states have internal predecessors, (106), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-11-13 02:45:19,680 INFO L276 IsEmpty]: Start isEmpty. Operand 77529 states and 105960 transitions. [2021-11-13 02:45:19,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-11-13 02:45:19,771 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:19,771 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:19,802 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-11-13 02:45:19,974 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable410 [2021-11-13 02:45:19,975 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:45:19,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:19,975 INFO L85 PathProgramCache]: Analyzing trace with hash -1413478686, now seen corresponding path program 2 times [2021-11-13 02:45:19,975 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:45:19,976 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420616179] [2021-11-13 02:45:19,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:19,976 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:45:19,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2021-11-13 02:45:20,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:45:20,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420616179] [2021-11-13 02:45:20,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420616179] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:20,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1196208692] [2021-11-13 02:45:20,054 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-13 02:45:20,055 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:20,055 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:20,056 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:20,082 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-13 02:45:20,230 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-13 02:45:20,231 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-13 02:45:20,234 INFO L263 TraceCheckSpWp]: Trace formula consists of 506 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:45:20,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:20,480 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 75 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:45:20,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:20,740 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 43 proven. 13 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-11-13 02:45:20,740 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1196208692] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:20,741 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:45:20,741 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2021-11-13 02:45:20,741 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901580989] [2021-11-13 02:45:20,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:20,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:45:20,742 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:45:20,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:45:20,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:45:20,742 INFO L87 Difference]: Start difference. First operand 77529 states and 105960 transitions. Second operand has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:45:26,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 02:45:26,327 INFO L93 Difference]: Finished difference Result 152501 states and 211366 transitions. [2021-11-13 02:45:26,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 02:45:26,327 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 140 [2021-11-13 02:45:26,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 02:45:26,787 INFO L225 Difference]: With dead ends: 152501 [2021-11-13 02:45:26,787 INFO L226 Difference]: Without dead ends: 109547 [2021-11-13 02:45:26,886 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 280 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:45:26,887 INFO L933 BasicCegarLoop]: 3226 mSDtfsCounter, 3386 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 270 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 285.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3386 SdHoareTripleChecker+Valid, 3344 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.11ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 345.69ms IncrementalHoareTripleChecker+Time [2021-11-13 02:45:26,888 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3386 Valid, 3344 Invalid, 274 Unknown, 0 Unchecked, 7.11ms Time], IncrementalHoareTripleChecker [4 Valid, 270 Invalid, 0 Unknown, 0 Unchecked, 345.69ms Time] [2021-11-13 02:45:26,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109547 states. [2021-11-13 02:45:32,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109547 to 108469. [2021-11-13 02:45:32,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108469 states, 92029 states have (on average 1.376240098229906) internal successors, (126654), 92411 states have internal predecessors, (126654), 9524 states have call successors, (9524), 6746 states have call predecessors, (9524), 6914 states have return successors, (11780), 9312 states have call predecessors, (11780), 9524 states have call successors, (11780) [2021-11-13 02:45:33,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108469 states to 108469 states and 147958 transitions. [2021-11-13 02:45:33,088 INFO L78 Accepts]: Start accepts. Automaton has 108469 states and 147958 transitions. Word has length 140 [2021-11-13 02:45:33,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 02:45:33,095 INFO L470 AbstractCegarLoop]: Abstraction has 108469 states and 147958 transitions. [2021-11-13 02:45:33,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.333333333333336) internal successors, (106), 3 states have internal predecessors, (106), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2021-11-13 02:45:33,095 INFO L276 IsEmpty]: Start isEmpty. Operand 108469 states and 147958 transitions. [2021-11-13 02:45:33,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-11-13 02:45:33,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 02:45:33,260 INFO L514 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 02:45:33,287 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-13 02:45:33,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable411 [2021-11-13 02:45:33,461 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-13 02:45:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 02:45:33,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1430480241, now seen corresponding path program 1 times [2021-11-13 02:45:33,462 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 02:45:33,462 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626164441] [2021-11-13 02:45:33,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:33,462 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 02:45:33,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:33,550 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 17 proven. 36 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-13 02:45:33,551 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 02:45:33,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626164441] [2021-11-13 02:45:33,551 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626164441] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:33,551 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [590842262] [2021-11-13 02:45:33,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 02:45:33,552 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 02:45:33,552 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 02:45:33,553 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 02:45:33,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1dcaf667-dda7-4fec-9d22-ed8fb3974d27/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-11-13 02:45:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 02:45:33,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 779 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-13 02:45:33,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 02:45:33,981 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-13 02:45:33,981 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 02:45:34,233 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 43 proven. 13 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-13 02:45:34,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [590842262] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-13 02:45:34,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2021-11-13 02:45:34,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6, 4] total 8 [2021-11-13 02:45:34,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649273967] [2021-11-13 02:45:34,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 02:45:34,234 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 02:45:34,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 02:45:34,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 02:45:34,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 02:45:34,235 INFO L87 Difference]: Start difference. First operand 108469 states and 147958 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10)