./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/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 ac65b92526cdafd793de45207c8e0f67883c86dc6af3548ef3333097912e0ee4 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:30:59,227 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:30:59,230 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:30:59,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:30:59,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:30:59,274 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:30:59,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:30:59,278 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:30:59,280 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:30:59,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:30:59,283 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:30:59,284 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:30:59,285 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:30:59,286 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:30:59,288 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:30:59,289 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:30:59,290 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:30:59,291 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:30:59,293 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:30:59,296 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:30:59,298 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:30:59,299 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:30:59,301 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:30:59,302 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:30:59,306 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:30:59,306 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:30:59,307 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:30:59,308 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:30:59,308 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:30:59,309 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:30:59,310 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:30:59,311 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:30:59,312 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:30:59,313 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:30:59,314 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:30:59,314 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:30:59,315 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:30:59,315 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:30:59,316 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:30:59,317 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:30:59,318 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:30:59,320 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:30:59,368 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:30:59,368 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:30:59,369 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:30:59,370 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:30:59,370 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:30:59,370 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:30:59,370 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:30:59,370 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:30:59,377 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:30:59,377 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:30:59,378 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:30:59,378 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:30:59,379 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:30:59,379 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:30:59,379 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:30:59,379 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:30:59,380 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:30:59,381 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:30:59,381 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:30:59,381 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:30:59,381 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:30:59,381 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:30:59,382 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:30:59,382 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:30:59,382 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:30:59,382 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:30:59,382 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:30:59,383 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:30:59,383 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:30:59,384 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:30:59,385 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:30:59,385 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:30:59,385 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:30:59,386 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:30:59,386 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:30:59,386 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:30:59,386 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:30:59,386 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:30:59,386 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:30:59,387 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:30:59,387 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac65b92526cdafd793de45207c8e0f67883c86dc6af3548ef3333097912e0ee4 [2021-11-12 23:30:59,693 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:30:59,715 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:30:59,718 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:30:59,720 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:30:59,721 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:30:59,722 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:30:59,789 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/data/fc24210a6/edd7b43bfeea40caac712d7fa04ed03d/FLAG504403a66 [2021-11-12 23:31:00,605 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:31:00,606 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:31:00,662 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/data/fc24210a6/edd7b43bfeea40caac712d7fa04ed03d/FLAG504403a66 [2021-11-12 23:31:01,132 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/data/fc24210a6/edd7b43bfeea40caac712d7fa04ed03d [2021-11-12 23:31:01,135 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:31:01,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:31:01,151 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:31:01,151 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:31:01,154 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:31:01,154 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:31:01" (1/1) ... [2021-11-12 23:31:01,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3595db5a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:01, skipping insertion in model container [2021-11-12 23:31:01,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:31:01" (1/1) ... [2021-11-12 23:31:01,163 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:31:01,358 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:31:01,942 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13606,13619] [2021-11-12 23:31:01,978 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19227,19240] [2021-11-12 23:31:01,988 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20416,20429] [2021-11-12 23:31:02,007 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22562,22575] [2021-11-12 23:31:02,031 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25842,25855] [2021-11-12 23:31:02,088 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32130,32143] [2021-11-12 23:31:02,776 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:31:02,794 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:31:02,883 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[13606,13619] [2021-11-12 23:31:02,900 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[19227,19240] [2021-11-12 23:31:02,906 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20416,20429] [2021-11-12 23:31:02,915 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[22562,22575] [2021-11-12 23:31:02,927 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25842,25855] [2021-11-12 23:31:02,948 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_b2ae8e72-0e0f-4725-a078-1cde97f99bab/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[32130,32143] [2021-11-12 23:31:03,399 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:31:03,436 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:31:03,437 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03 WrapperNode [2021-11-12 23:31:03,437 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:31:03,438 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:31:03,439 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:31:03,439 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:31:03,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,520 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,662 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:31:03,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:31:03,664 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:31:03,664 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:31:03,673 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,746 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,746 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,886 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,933 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:03,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:04,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:31:04,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:31:04,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:31:04,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:31:04,025 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (1/1) ... [2021-11-12 23:31:04,032 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:31:04,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:31:04,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:31:04,080 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b2ae8e72-0e0f-4725-a078-1cde97f99bab/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:31:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-12 23:31:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:31:04,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:31:04,111 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:31:09,124 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:31:09,125 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-12 23:31:09,132 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:31:09 BoogieIcfgContainer [2021-11-12 23:31:09,133 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:31:09,134 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:31:09,135 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:31:09,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:31:09,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:31:01" (1/3) ... [2021-11-12 23:31:09,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5371d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:31:09, skipping insertion in model container [2021-11-12 23:31:09,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:31:03" (2/3) ... [2021-11-12 23:31:09,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5371d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:31:09, skipping insertion in model container [2021-11-12 23:31:09,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:31:09" (3/3) ... [2021-11-12 23:31:09,142 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2021-11-12 23:31:09,152 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:31:09,152 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2021-11-12 23:31:09,221 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:31:09,231 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 [2021-11-12 23:31:09,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2021-11-12 23:31:09,284 INFO L276 IsEmpty]: Start isEmpty. Operand has 1698 states, 1691 states have (on average 1.801892371377883) internal successors, (3047), 1697 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:09,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-12 23:31:09,322 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:09,322 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:09,323 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:09,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:09,329 INFO L85 PathProgramCache]: Analyzing trace with hash -2058921044, now seen corresponding path program 1 times [2021-11-12 23:31:09,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:09,338 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615062639] [2021-11-12 23:31:09,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:09,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:09,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:09,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:09,898 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:09,898 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615062639] [2021-11-12 23:31:09,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615062639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:09,899 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:09,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:31:09,901 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354647377] [2021-11-12 23:31:09,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:09,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:31:09,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:09,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:31:09,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:31:09,961 INFO L87 Difference]: Start difference. First operand has 1698 states, 1691 states have (on average 1.801892371377883) internal successors, (3047), 1697 states have internal predecessors, (3047), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:10,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:10,570 INFO L93 Difference]: Finished difference Result 2373 states and 4179 transitions. [2021-11-12 23:31:10,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:31:10,573 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-12 23:31:10,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:10,608 INFO L225 Difference]: With dead ends: 2373 [2021-11-12 23:31:10,608 INFO L226 Difference]: Without dead ends: 2222 [2021-11-12 23:31:10,616 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 [2021-11-12 23:31:10,622 INFO L933 BasicCegarLoop]: 3521 mSDtfsCounter, 1811 mSDsluCounter, 1921 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 286.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1811 SdHoareTripleChecker+Valid, 5436 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 36.81ms SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 377.47ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:10,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1811 Valid, 5436 Invalid, 217 Unknown, 0 Unchecked, 36.81ms Time], IncrementalHoareTripleChecker [95 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 377.47ms Time] [2021-11-12 23:31:10,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2222 states. [2021-11-12 23:31:10,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2222 to 2212. [2021-11-12 23:31:10,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2212 states, 2206 states have (on average 1.2892112420670898) internal successors, (2844), 2211 states have internal predecessors, (2844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:10,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2212 states to 2212 states and 2844 transitions. [2021-11-12 23:31:10,793 INFO L78 Accepts]: Start accepts. Automaton has 2212 states and 2844 transitions. Word has length 74 [2021-11-12 23:31:10,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:10,794 INFO L470 AbstractCegarLoop]: Abstraction has 2212 states and 2844 transitions. [2021-11-12 23:31:10,794 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:10,795 INFO L276 IsEmpty]: Start isEmpty. Operand 2212 states and 2844 transitions. [2021-11-12 23:31:10,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-12 23:31:10,803 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:10,803 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:10,804 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-12 23:31:10,804 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:10,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:10,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1495234726, now seen corresponding path program 1 times [2021-11-12 23:31:10,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:10,805 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833401211] [2021-11-12 23:31:10,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:10,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:11,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:11,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:11,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833401211] [2021-11-12 23:31:11,032 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [833401211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:11,032 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:11,032 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:31:11,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [169584401] [2021-11-12 23:31:11,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:11,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:31:11,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:11,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:31:11,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:31:11,038 INFO L87 Difference]: Start difference. First operand 2212 states and 2844 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:11,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:11,249 INFO L93 Difference]: Finished difference Result 2969 states and 3926 transitions. [2021-11-12 23:31:11,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:31:11,251 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-12 23:31:11,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:11,267 INFO L225 Difference]: With dead ends: 2969 [2021-11-12 23:31:11,268 INFO L226 Difference]: Without dead ends: 2602 [2021-11-12 23:31:11,272 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 [2021-11-12 23:31:11,274 INFO L933 BasicCegarLoop]: 2229 mSDtfsCounter, 1124 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 93.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 3553 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.73ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 124.45ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:11,276 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1124 Valid, 3553 Invalid, 95 Unknown, 0 Unchecked, 9.73ms Time], IncrementalHoareTripleChecker [34 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 124.45ms Time] [2021-11-12 23:31:11,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2602 states. [2021-11-12 23:31:11,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2602 to 2592. [2021-11-12 23:31:11,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2592 states, 2586 states have (on average 1.3093580819798918) internal successors, (3386), 2591 states have internal predecessors, (3386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:11,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2592 states to 2592 states and 3386 transitions. [2021-11-12 23:31:11,371 INFO L78 Accepts]: Start accepts. Automaton has 2592 states and 3386 transitions. Word has length 74 [2021-11-12 23:31:11,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:11,374 INFO L470 AbstractCegarLoop]: Abstraction has 2592 states and 3386 transitions. [2021-11-12 23:31:11,375 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:11,375 INFO L276 IsEmpty]: Start isEmpty. Operand 2592 states and 3386 transitions. [2021-11-12 23:31:11,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-12 23:31:11,392 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:11,392 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:11,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-12 23:31:11,392 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:11,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:11,393 INFO L85 PathProgramCache]: Analyzing trace with hash 209016782, now seen corresponding path program 1 times [2021-11-12 23:31:11,394 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:11,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484983913] [2021-11-12 23:31:11,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:11,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:11,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:11,577 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:11,577 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484983913] [2021-11-12 23:31:11,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484983913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:11,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:11,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:31:11,583 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324786942] [2021-11-12 23:31:11,583 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:11,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:31:11,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:11,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:31:11,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:31:11,586 INFO L87 Difference]: Start difference. First operand 2592 states and 3386 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:12,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:12,772 INFO L93 Difference]: Finished difference Result 4595 states and 6159 transitions. [2021-11-12 23:31:12,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:31:12,773 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-12 23:31:12,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:12,788 INFO L225 Difference]: With dead ends: 4595 [2021-11-12 23:31:12,788 INFO L226 Difference]: Without dead ends: 2604 [2021-11-12 23:31:12,792 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:31:12,795 INFO L933 BasicCegarLoop]: 942 mSDtfsCounter, 5321 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 789.91ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5321 SdHoareTripleChecker+Valid, 1113 SdHoareTripleChecker+Invalid, 872 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.12ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 975.68ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:12,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5321 Valid, 1113 Invalid, 872 Unknown, 0 Unchecked, 18.12ms Time], IncrementalHoareTripleChecker [14 Valid, 858 Invalid, 0 Unknown, 0 Unchecked, 975.68ms Time] [2021-11-12 23:31:12,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2604 states. [2021-11-12 23:31:12,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2604 to 2594. [2021-11-12 23:31:12,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2594 states, 2588 states have (on average 1.3504636785162287) internal successors, (3495), 2593 states have internal predecessors, (3495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:12,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2594 states to 2594 states and 3495 transitions. [2021-11-12 23:31:12,948 INFO L78 Accepts]: Start accepts. Automaton has 2594 states and 3495 transitions. Word has length 74 [2021-11-12 23:31:12,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:12,948 INFO L470 AbstractCegarLoop]: Abstraction has 2594 states and 3495 transitions. [2021-11-12 23:31:12,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:12,949 INFO L276 IsEmpty]: Start isEmpty. Operand 2594 states and 3495 transitions. [2021-11-12 23:31:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-12 23:31:12,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:12,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:12,956 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-12 23:31:12,956 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:12,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:12,957 INFO L85 PathProgramCache]: Analyzing trace with hash 2036024049, now seen corresponding path program 1 times [2021-11-12 23:31:12,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:12,957 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543494670] [2021-11-12 23:31:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:12,958 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:13,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:13,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:13,072 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543494670] [2021-11-12 23:31:13,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543494670] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:13,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:13,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:31:13,074 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213763628] [2021-11-12 23:31:13,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:13,075 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:31:13,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:13,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:31:13,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:31:13,080 INFO L87 Difference]: Start difference. First operand 2594 states and 3495 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:14,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:14,045 INFO L93 Difference]: Finished difference Result 5284 states and 7272 transitions. [2021-11-12 23:31:14,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:31:14,046 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-12 23:31:14,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:14,064 INFO L225 Difference]: With dead ends: 5284 [2021-11-12 23:31:14,064 INFO L226 Difference]: Without dead ends: 3131 [2021-11-12 23:31:14,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:31:14,069 INFO L933 BasicCegarLoop]: 714 mSDtfsCounter, 4177 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 685 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 591.44ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4177 SdHoareTripleChecker+Valid, 882 SdHoareTripleChecker+Invalid, 709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 13.75ms SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 727.97ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:14,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4177 Valid, 882 Invalid, 709 Unknown, 0 Unchecked, 13.75ms Time], IncrementalHoareTripleChecker [24 Valid, 685 Invalid, 0 Unknown, 0 Unchecked, 727.97ms Time] [2021-11-12 23:31:14,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3131 states. [2021-11-12 23:31:14,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3131 to 3121. [2021-11-12 23:31:14,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3121 states, 3115 states have (on average 1.3775280898876405) internal successors, (4291), 3120 states have internal predecessors, (4291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:14,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 4291 transitions. [2021-11-12 23:31:14,284 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 4291 transitions. Word has length 75 [2021-11-12 23:31:14,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:14,285 INFO L470 AbstractCegarLoop]: Abstraction has 3121 states and 4291 transitions. [2021-11-12 23:31:14,285 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 4 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:14,285 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 4291 transitions. [2021-11-12 23:31:14,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-12 23:31:14,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:14,291 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:14,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-12 23:31:14,292 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:14,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:14,293 INFO L85 PathProgramCache]: Analyzing trace with hash -673249547, now seen corresponding path program 1 times [2021-11-12 23:31:14,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:14,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444703731] [2021-11-12 23:31:14,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:14,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:14,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:14,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:14,365 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:14,365 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444703731] [2021-11-12 23:31:14,365 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444703731] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:14,365 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:14,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:31:14,366 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868479764] [2021-11-12 23:31:14,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:14,366 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:31:14,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:14,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:31:14,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:31:14,367 INFO L87 Difference]: Start difference. First operand 3121 states and 4291 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:14,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:14,685 INFO L93 Difference]: Finished difference Result 6531 states and 9108 transitions. [2021-11-12 23:31:14,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:31:14,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-12 23:31:14,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:14,712 INFO L225 Difference]: With dead ends: 6531 [2021-11-12 23:31:14,712 INFO L226 Difference]: Without dead ends: 4826 [2021-11-12 23:31:14,716 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 [2021-11-12 23:31:14,717 INFO L933 BasicCegarLoop]: 1647 mSDtfsCounter, 1035 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 52.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1035 SdHoareTripleChecker+Valid, 2489 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.52ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 62.73ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:14,718 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1035 Valid, 2489 Invalid, 51 Unknown, 0 Unchecked, 6.52ms Time], IncrementalHoareTripleChecker [12 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 62.73ms Time] [2021-11-12 23:31:14,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4826 states. [2021-11-12 23:31:14,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4826 to 4816. [2021-11-12 23:31:15,002 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4816 states, 4810 states have (on average 1.376923076923077) internal successors, (6623), 4815 states have internal predecessors, (6623), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:15,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4816 states to 4816 states and 6623 transitions. [2021-11-12 23:31:15,025 INFO L78 Accepts]: Start accepts. Automaton has 4816 states and 6623 transitions. Word has length 76 [2021-11-12 23:31:15,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:15,025 INFO L470 AbstractCegarLoop]: Abstraction has 4816 states and 6623 transitions. [2021-11-12 23:31:15,026 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:15,026 INFO L276 IsEmpty]: Start isEmpty. Operand 4816 states and 6623 transitions. [2021-11-12 23:31:15,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-12 23:31:15,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:15,035 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:15,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-12 23:31:15,035 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:15,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:15,036 INFO L85 PathProgramCache]: Analyzing trace with hash -560510585, now seen corresponding path program 1 times [2021-11-12 23:31:15,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:15,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [242465513] [2021-11-12 23:31:15,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:15,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:15,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:15,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:15,105 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:15,105 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [242465513] [2021-11-12 23:31:15,105 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [242465513] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:15,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:15,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:31:15,106 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1253085450] [2021-11-12 23:31:15,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:15,106 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:31:15,106 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:15,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:31:15,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:31:15,107 INFO L87 Difference]: Start difference. First operand 4816 states and 6623 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:15,604 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:15,604 INFO L93 Difference]: Finished difference Result 10335 states and 14406 transitions. [2021-11-12 23:31:15,605 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:31:15,605 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-12 23:31:15,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:15,646 INFO L225 Difference]: With dead ends: 10335 [2021-11-12 23:31:15,646 INFO L226 Difference]: Without dead ends: 7474 [2021-11-12 23:31:15,652 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 [2021-11-12 23:31:15,653 INFO L933 BasicCegarLoop]: 1665 mSDtfsCounter, 1054 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 44.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1054 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.63ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 53.03ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:15,654 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1054 Valid, 2503 Invalid, 38 Unknown, 0 Unchecked, 6.63ms Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 53.03ms Time] [2021-11-12 23:31:15,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7474 states. [2021-11-12 23:31:16,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7474 to 7464. [2021-11-12 23:31:16,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7464 states, 7458 states have (on average 1.3765084473049074) internal successors, (10266), 7463 states have internal predecessors, (10266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:16,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7464 states to 7464 states and 10266 transitions. [2021-11-12 23:31:16,244 INFO L78 Accepts]: Start accepts. Automaton has 7464 states and 10266 transitions. Word has length 76 [2021-11-12 23:31:16,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:16,244 INFO L470 AbstractCegarLoop]: Abstraction has 7464 states and 10266 transitions. [2021-11-12 23:31:16,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:16,245 INFO L276 IsEmpty]: Start isEmpty. Operand 7464 states and 10266 transitions. [2021-11-12 23:31:16,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-12 23:31:16,255 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:16,256 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:16,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-12 23:31:16,256 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:16,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:16,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1192523870, now seen corresponding path program 1 times [2021-11-12 23:31:16,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:16,257 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142040002] [2021-11-12 23:31:16,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:16,258 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:16,327 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:16,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:16,328 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142040002] [2021-11-12 23:31:16,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142040002] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:16,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:16,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-12 23:31:16,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178638055] [2021-11-12 23:31:16,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:16,331 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:31:16,331 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:16,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:31:16,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:31:16,332 INFO L87 Difference]: Start difference. First operand 7464 states and 10266 transitions. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:17,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:17,113 INFO L93 Difference]: Finished difference Result 17347 states and 24295 transitions. [2021-11-12 23:31:17,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:31:17,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-12 23:31:17,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:17,158 INFO L225 Difference]: With dead ends: 17347 [2021-11-12 23:31:17,159 INFO L226 Difference]: Without dead ends: 11666 [2021-11-12 23:31:17,168 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 [2021-11-12 23:31:17,169 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 659 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 40.15ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 659 SdHoareTripleChecker+Valid, 2123 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.66ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 48.11ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:17,169 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [659 Valid, 2123 Invalid, 32 Unknown, 0 Unchecked, 5.66ms Time], IncrementalHoareTripleChecker [3 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 48.11ms Time] [2021-11-12 23:31:17,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11666 states. [2021-11-12 23:31:17,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11666 to 11656. [2021-11-12 23:31:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11656 states, 11650 states have (on average 1.3851502145922747) internal successors, (16137), 11655 states have internal predecessors, (16137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:18,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11656 states to 11656 states and 16137 transitions. [2021-11-12 23:31:18,012 INFO L78 Accepts]: Start accepts. Automaton has 11656 states and 16137 transitions. Word has length 76 [2021-11-12 23:31:18,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:18,014 INFO L470 AbstractCegarLoop]: Abstraction has 11656 states and 16137 transitions. [2021-11-12 23:31:18,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:18,014 INFO L276 IsEmpty]: Start isEmpty. Operand 11656 states and 16137 transitions. [2021-11-12 23:31:18,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-12 23:31:18,027 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:18,027 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:18,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-12 23:31:18,028 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:18,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:18,029 INFO L85 PathProgramCache]: Analyzing trace with hash -533704172, now seen corresponding path program 1 times [2021-11-12 23:31:18,030 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:18,030 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591437020] [2021-11-12 23:31:18,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:18,030 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:18,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:18,123 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:18,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:18,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591437020] [2021-11-12 23:31:18,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591437020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:18,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:18,124 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:31:18,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410230656] [2021-11-12 23:31:18,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:18,124 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:31:18,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:18,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:31:18,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:31:18,125 INFO L87 Difference]: Start difference. First operand 11656 states and 16137 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:19,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:19,995 INFO L93 Difference]: Finished difference Result 28441 states and 39755 transitions. [2021-11-12 23:31:19,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:31:19,996 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-12 23:31:19,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:20,037 INFO L225 Difference]: With dead ends: 28441 [2021-11-12 23:31:20,038 INFO L226 Difference]: Without dead ends: 17750 [2021-11-12 23:31:20,054 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:31:20,055 INFO L933 BasicCegarLoop]: 595 mSDtfsCounter, 3577 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 598 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 571.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3577 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.01ms SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 693.43ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:20,055 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3577 Valid, 747 Invalid, 642 Unknown, 0 Unchecked, 12.01ms Time], IncrementalHoareTripleChecker [44 Valid, 598 Invalid, 0 Unknown, 0 Unchecked, 693.43ms Time] [2021-11-12 23:31:20,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17750 states. [2021-11-12 23:31:21,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17750 to 17740. [2021-11-12 23:31:21,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17740 states, 17734 states have (on average 1.3898725611819105) internal successors, (24648), 17739 states have internal predecessors, (24648), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:21,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17740 states to 17740 states and 24648 transitions. [2021-11-12 23:31:21,377 INFO L78 Accepts]: Start accepts. Automaton has 17740 states and 24648 transitions. Word has length 76 [2021-11-12 23:31:21,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:21,377 INFO L470 AbstractCegarLoop]: Abstraction has 17740 states and 24648 transitions. [2021-11-12 23:31:21,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:21,378 INFO L276 IsEmpty]: Start isEmpty. Operand 17740 states and 24648 transitions. [2021-11-12 23:31:21,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:31:21,391 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:21,391 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:21,391 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-12 23:31:21,391 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:21,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:21,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1266054146, now seen corresponding path program 1 times [2021-11-12 23:31:21,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:21,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793288650] [2021-11-12 23:31:21,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:21,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:21,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:21,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:21,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:21,542 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793288650] [2021-11-12 23:31:21,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793288650] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:21,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:21,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:31:21,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056607665] [2021-11-12 23:31:21,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:21,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:31:21,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:21,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:31:21,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:31:21,544 INFO L87 Difference]: Start difference. First operand 17740 states and 24648 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:27,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:27,761 INFO L93 Difference]: Finished difference Result 74952 states and 105534 transitions. [2021-11-12 23:31:27,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:31:27,762 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-12 23:31:27,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:27,990 INFO L225 Difference]: With dead ends: 74952 [2021-11-12 23:31:27,991 INFO L226 Difference]: Without dead ends: 68851 [2021-11-12 23:31:28,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:31:28,028 INFO L933 BasicCegarLoop]: 626 mSDtfsCounter, 6210 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1216 mSolverCounterSat, 321 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1002.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6210 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 24.01ms SdHoareTripleChecker+Time, 321 IncrementalHoareTripleChecker+Valid, 1216 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1200.15ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:28,029 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6210 Valid, 1565 Invalid, 1537 Unknown, 0 Unchecked, 24.01ms Time], IncrementalHoareTripleChecker [321 Valid, 1216 Invalid, 0 Unknown, 0 Unchecked, 1200.15ms Time] [2021-11-12 23:31:28,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68851 states. [2021-11-12 23:31:30,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68851 to 17788. [2021-11-12 23:31:30,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17788 states, 17782 states have (on average 1.3897199415138906) internal successors, (24712), 17787 states have internal predecessors, (24712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:30,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17788 states to 17788 states and 24712 transitions. [2021-11-12 23:31:30,509 INFO L78 Accepts]: Start accepts. Automaton has 17788 states and 24712 transitions. Word has length 77 [2021-11-12 23:31:30,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:30,510 INFO L470 AbstractCegarLoop]: Abstraction has 17788 states and 24712 transitions. [2021-11-12 23:31:30,510 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:30,510 INFO L276 IsEmpty]: Start isEmpty. Operand 17788 states and 24712 transitions. [2021-11-12 23:31:30,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:31:30,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:30,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:30,524 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-12 23:31:30,524 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:30,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:30,525 INFO L85 PathProgramCache]: Analyzing trace with hash 433382606, now seen corresponding path program 1 times [2021-11-12 23:31:30,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:30,525 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [924868491] [2021-11-12 23:31:30,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:30,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:30,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:30,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:30,622 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [924868491] [2021-11-12 23:31:30,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [924868491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:30,623 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:30,623 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:31:30,623 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343059768] [2021-11-12 23:31:30,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:30,624 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:31:30,624 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:30,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:31:30,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:31:30,625 INFO L87 Difference]: Start difference. First operand 17788 states and 24712 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:37,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:37,627 INFO L93 Difference]: Finished difference Result 77455 states and 108946 transitions. [2021-11-12 23:31:37,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:31:37,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-12 23:31:37,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:37,792 INFO L225 Difference]: With dead ends: 77455 [2021-11-12 23:31:37,793 INFO L226 Difference]: Without dead ends: 71091 [2021-11-12 23:31:37,818 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:31:37,819 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 5741 mSDsluCounter, 926 mSDsCounter, 0 mSdLazyCounter, 1242 mSolverCounterSat, 322 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 861.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5741 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 1564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.42ms SdHoareTripleChecker+Time, 322 IncrementalHoareTripleChecker+Valid, 1242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1075.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:37,820 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5741 Valid, 1546 Invalid, 1564 Unknown, 0 Unchecked, 12.42ms Time], IncrementalHoareTripleChecker [322 Valid, 1242 Invalid, 0 Unknown, 0 Unchecked, 1075.05ms Time] [2021-11-12 23:31:37,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71091 states. [2021-11-12 23:31:39,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71091 to 17968. [2021-11-12 23:31:40,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17968 states, 17962 states have (on average 1.389154882529785) internal successors, (24952), 17967 states have internal predecessors, (24952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:40,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17968 states to 17968 states and 24952 transitions. [2021-11-12 23:31:40,043 INFO L78 Accepts]: Start accepts. Automaton has 17968 states and 24952 transitions. Word has length 77 [2021-11-12 23:31:40,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:40,043 INFO L470 AbstractCegarLoop]: Abstraction has 17968 states and 24952 transitions. [2021-11-12 23:31:40,043 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:40,044 INFO L276 IsEmpty]: Start isEmpty. Operand 17968 states and 24952 transitions. [2021-11-12 23:31:40,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-12 23:31:40,056 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:40,057 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:40,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-12 23:31:40,057 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:40,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:40,058 INFO L85 PathProgramCache]: Analyzing trace with hash -421429613, now seen corresponding path program 1 times [2021-11-12 23:31:40,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:40,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293815199] [2021-11-12 23:31:40,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:40,059 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:40,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:40,163 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:40,163 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293815199] [2021-11-12 23:31:40,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293815199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:40,164 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:40,164 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-12 23:31:40,164 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [552682223] [2021-11-12 23:31:40,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:40,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:31:40,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:40,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:31:40,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:31:40,166 INFO L87 Difference]: Start difference. First operand 17968 states and 24952 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:48,378 INFO L93 Difference]: Finished difference Result 70697 states and 99332 transitions. [2021-11-12 23:31:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-12 23:31:48,379 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-12 23:31:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:48,532 INFO L225 Difference]: With dead ends: 70697 [2021-11-12 23:31:48,532 INFO L226 Difference]: Without dead ends: 64619 [2021-11-12 23:31:48,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-12 23:31:48,557 INFO L933 BasicCegarLoop]: 607 mSDtfsCounter, 5448 mSDsluCounter, 921 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 336 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 843.97ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5448 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1608 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.44ms SdHoareTripleChecker+Time, 336 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1049.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:48,557 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5448 Valid, 1528 Invalid, 1608 Unknown, 0 Unchecked, 12.44ms Time], IncrementalHoareTripleChecker [336 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1049.05ms Time] [2021-11-12 23:31:48,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64619 states. [2021-11-12 23:31:50,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64619 to 18268. [2021-11-12 23:31:50,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18268 states, 18262 states have (on average 1.388456905048735) internal successors, (25356), 18267 states have internal predecessors, (25356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:50,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18268 states to 18268 states and 25356 transitions. [2021-11-12 23:31:50,798 INFO L78 Accepts]: Start accepts. Automaton has 18268 states and 25356 transitions. Word has length 77 [2021-11-12 23:31:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:50,798 INFO L470 AbstractCegarLoop]: Abstraction has 18268 states and 25356 transitions. [2021-11-12 23:31:50,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:50,799 INFO L276 IsEmpty]: Start isEmpty. Operand 18268 states and 25356 transitions. [2021-11-12 23:31:50,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 23:31:50,813 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:50,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:50,813 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-12 23:31:50,813 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:50,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:50,814 INFO L85 PathProgramCache]: Analyzing trace with hash -527964228, now seen corresponding path program 1 times [2021-11-12 23:31:50,814 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:50,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975261611] [2021-11-12 23:31:50,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:50,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:50,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:50,923 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:50,923 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975261611] [2021-11-12 23:31:50,923 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975261611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:50,923 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:50,923 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:31:50,924 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360681427] [2021-11-12 23:31:50,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:50,924 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:31:50,924 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:50,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:31:50,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:31:50,925 INFO L87 Difference]: Start difference. First operand 18268 states and 25356 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:54,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:31:54,615 INFO L93 Difference]: Finished difference Result 29278 states and 40973 transitions. [2021-11-12 23:31:54,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:31:54,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-12 23:31:54,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:31:54,663 INFO L225 Difference]: With dead ends: 29278 [2021-11-12 23:31:54,663 INFO L226 Difference]: Without dead ends: 29276 [2021-11-12 23:31:54,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:31:54,670 INFO L933 BasicCegarLoop]: 1168 mSDtfsCounter, 98 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 57.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.48ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 65.82ms IncrementalHoareTripleChecker+Time [2021-11-12 23:31:54,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 3411 Invalid, 50 Unknown, 0 Unchecked, 5.48ms Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 65.82ms Time] [2021-11-12 23:31:54,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29276 states. [2021-11-12 23:31:56,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29276 to 18266. [2021-11-12 23:31:56,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18266 states, 18261 states have (on average 1.3865067630469305) internal successors, (25319), 18265 states have internal predecessors, (25319), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:56,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18266 states to 18266 states and 25319 transitions. [2021-11-12 23:31:56,808 INFO L78 Accepts]: Start accepts. Automaton has 18266 states and 25319 transitions. Word has length 78 [2021-11-12 23:31:56,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:31:56,809 INFO L470 AbstractCegarLoop]: Abstraction has 18266 states and 25319 transitions. [2021-11-12 23:31:56,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:31:56,809 INFO L276 IsEmpty]: Start isEmpty. Operand 18266 states and 25319 transitions. [2021-11-12 23:31:56,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 23:31:56,823 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:31:56,823 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:31:56,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-12 23:31:56,824 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:31:56,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:31:56,824 INFO L85 PathProgramCache]: Analyzing trace with hash 1000233041, now seen corresponding path program 1 times [2021-11-12 23:31:56,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:31:56,825 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291818125] [2021-11-12 23:31:56,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:31:56,825 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:31:56,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:31:56,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:31:56,913 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:31:56,913 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291818125] [2021-11-12 23:31:56,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291818125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:31:56,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:31:56,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:31:56,914 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074319078] [2021-11-12 23:31:56,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:31:56,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:31:56,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:31:56,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:31:56,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:31:56,916 INFO L87 Difference]: Start difference. First operand 18266 states and 25319 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:32:00,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:00,501 INFO L93 Difference]: Finished difference Result 29276 states and 40936 transitions. [2021-11-12 23:32:00,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:32:00,502 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-12 23:32:00,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:00,541 INFO L225 Difference]: With dead ends: 29276 [2021-11-12 23:32:00,541 INFO L226 Difference]: Without dead ends: 29274 [2021-11-12 23:32:00,547 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-12 23:32:00,548 INFO L933 BasicCegarLoop]: 1166 mSDtfsCounter, 98 mSDsluCounter, 2265 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 43.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 3405 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.11ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 52.31ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:00,548 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [98 Valid, 3405 Invalid, 50 Unknown, 0 Unchecked, 6.11ms Time], IncrementalHoareTripleChecker [0 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 52.31ms Time] [2021-11-12 23:32:00,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29274 states. [2021-11-12 23:32:02,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29274 to 18264. [2021-11-12 23:32:02,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18264 states, 18260 states have (on average 1.3845564074479737) internal successors, (25282), 18263 states have internal predecessors, (25282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:32:02,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18264 states to 18264 states and 25282 transitions. [2021-11-12 23:32:02,552 INFO L78 Accepts]: Start accepts. Automaton has 18264 states and 25282 transitions. Word has length 78 [2021-11-12 23:32:02,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:32:02,553 INFO L470 AbstractCegarLoop]: Abstraction has 18264 states and 25282 transitions. [2021-11-12 23:32:02,553 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:32:02,553 INFO L276 IsEmpty]: Start isEmpty. Operand 18264 states and 25282 transitions. [2021-11-12 23:32:02,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-12 23:32:02,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:32:02,565 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:32:02,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-12 23:32:02,565 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2021-11-12 23:32:02,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:32:02,566 INFO L85 PathProgramCache]: Analyzing trace with hash -559253753, now seen corresponding path program 1 times [2021-11-12 23:32:02,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-12 23:32:02,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651314372] [2021-11-12 23:32:02,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:32:02,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-12 23:32:02,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:32:02,632 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:32:02,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-12 23:32:02,633 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651314372] [2021-11-12 23:32:02,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651314372] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-12 23:32:02,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:32:02,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-12 23:32:02,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [630681642] [2021-11-12 23:32:02,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:32:02,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:32:02,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-12 23:32:02,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:32:02,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:32:02,635 INFO L87 Difference]: Start difference. First operand 18264 states and 25282 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-12 23:32:06,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:32:06,955 INFO L93 Difference]: Finished difference Result 47357 states and 65773 transitions. [2021-11-12 23:32:06,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:32:06,955 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-12 23:32:06,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:32:07,004 INFO L225 Difference]: With dead ends: 47357 [2021-11-12 23:32:07,004 INFO L226 Difference]: Without dead ends: 29896 [2021-11-12 23:32:07,035 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:32:07,036 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 3222 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 473.83ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3222 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.20ms SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 601.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:32:07,036 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3222 Valid, 671 Invalid, 650 Unknown, 0 Unchecked, 7.20ms Time], IncrementalHoareTripleChecker [93 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 601.41ms Time] [2021-11-12 23:32:07,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29896 states.