./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b2eff8ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/config/TaipanReach.xml -i ../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG --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 8f0362e5bdd04ddb68671929eb7c82f3a55838c2357b753aa3b8d313416b3614 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-b2eff8b [2021-10-29 05:16:12,002 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-29 05:16:12,005 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-29 05:16:12,061 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-29 05:16:12,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-29 05:16:12,067 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-29 05:16:12,069 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-29 05:16:12,073 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-29 05:16:12,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-29 05:16:12,084 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-29 05:16:12,085 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-29 05:16:12,087 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-29 05:16:12,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-29 05:16:12,090 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-29 05:16:12,093 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-29 05:16:12,098 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-29 05:16:12,100 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-29 05:16:12,101 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-29 05:16:12,103 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-29 05:16:12,110 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-29 05:16:12,113 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-29 05:16:12,114 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-29 05:16:12,117 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-29 05:16:12,119 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-29 05:16:12,124 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-29 05:16:12,125 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-29 05:16:12,125 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-29 05:16:12,127 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-29 05:16:12,128 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-29 05:16:12,130 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-29 05:16:12,131 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-29 05:16:12,132 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-29 05:16:12,134 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-29 05:16:12,135 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-29 05:16:12,137 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-29 05:16:12,137 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-29 05:16:12,138 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-29 05:16:12,138 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-29 05:16:12,139 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-29 05:16:12,140 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-29 05:16:12,140 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-29 05:16:12,141 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-10-29 05:16:12,191 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-29 05:16:12,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-29 05:16:12,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-10-29 05:16:12,193 INFO L138 SettingsManager]: * User list type=DISABLED [2021-10-29 05:16:12,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-10-29 05:16:12,194 INFO L138 SettingsManager]: * Explicit value domain=true [2021-10-29 05:16:12,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-10-29 05:16:12,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-10-29 05:16:12,201 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-10-29 05:16:12,202 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-10-29 05:16:12,203 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-10-29 05:16:12,203 INFO L138 SettingsManager]: * Interval Domain=false [2021-10-29 05:16:12,203 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-10-29 05:16:12,204 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-10-29 05:16:12,204 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-10-29 05:16:12,205 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-29 05:16:12,205 INFO L138 SettingsManager]: * sizeof long=4 [2021-10-29 05:16:12,205 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-29 05:16:12,206 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-10-29 05:16:12,206 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-29 05:16:12,206 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-10-29 05:16:12,206 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-10-29 05:16:12,206 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-10-29 05:16:12,207 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-10-29 05:16:12,207 INFO L138 SettingsManager]: * sizeof long double=12 [2021-10-29 05:16:12,207 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-29 05:16:12,207 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-29 05:16:12,208 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-10-29 05:16:12,208 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-29 05:16:12,208 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-10-29 05:16:12,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:16:12,209 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-29 05:16:12,209 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-10-29 05:16:12,209 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-10-29 05:16:12,210 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-10-29 05:16:12,210 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-10-29 05:16:12,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-10-29 05:16:12,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-29 05:16:12,211 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-10-29 05:16:12,211 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f0362e5bdd04ddb68671929eb7c82f3a55838c2357b753aa3b8d313416b3614 [2021-10-29 05:16:12,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-29 05:16:12,591 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-29 05:16:12,593 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-29 05:16:12,595 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-29 05:16:12,595 INFO L275 PluginConnector]: CDTParser initialized [2021-10-29 05:16:12,596 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/../../sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2021-10-29 05:16:12,675 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/data/b5b5e2e52/d89ef94fcffb4062a4ea910789bfce36/FLAG6d764e13d [2021-10-29 05:16:13,170 INFO L306 CDTParser]: Found 1 translation units. [2021-10-29 05:16:13,173 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c [2021-10-29 05:16:13,185 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/data/b5b5e2e52/d89ef94fcffb4062a4ea910789bfce36/FLAG6d764e13d [2021-10-29 05:16:13,518 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/data/b5b5e2e52/d89ef94fcffb4062a4ea910789bfce36 [2021-10-29 05:16:13,520 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-29 05:16:13,522 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-29 05:16:13,527 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-29 05:16:13,527 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-29 05:16:13,531 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-29 05:16:13,531 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b18f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13, skipping insertion in model container [2021-10-29 05:16:13,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-29 05:16:13,580 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-29 05:16:13,781 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2021-10-29 05:16:13,786 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2021-10-29 05:16:13,795 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2021-10-29 05:16:13,796 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2021-10-29 05:16:13,798 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2021-10-29 05:16:13,799 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2021-10-29 05:16:13,809 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2021-10-29 05:16:13,812 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2021-10-29 05:16:13,814 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2021-10-29 05:16:13,819 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2021-10-29 05:16:13,823 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2021-10-29 05:16:13,829 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2021-10-29 05:16:13,833 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2021-10-29 05:16:13,836 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2021-10-29 05:16:13,841 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2021-10-29 05:16:13,842 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] [2021-10-29 05:16:13,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:16:13,854 INFO L203 MainTranslator]: Completed pre-run [2021-10-29 05:16:13,870 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1066,1079] [2021-10-29 05:16:13,872 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1266,1279] [2021-10-29 05:16:13,874 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1613,1626] [2021-10-29 05:16:13,875 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[1813,1826] [2021-10-29 05:16:13,877 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2024,2037] [2021-10-29 05:16:13,878 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2224,2237] [2021-10-29 05:16:13,881 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2629,2642] [2021-10-29 05:16:13,882 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[2829,2842] [2021-10-29 05:16:13,884 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3040,3053] [2021-10-29 05:16:13,885 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3243,3256] [2021-10-29 05:16:13,889 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3583,3596] [2021-10-29 05:16:13,890 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[3786,3799] [2021-10-29 05:16:13,892 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4000,4013] [2021-10-29 05:16:13,893 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4203,4216] [2021-10-29 05:16:13,896 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4547,4560] [2021-10-29 05:16:13,898 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_9e89adc3-fe71-4f5f-b6ca-967da244dac2/sv-benchmarks/c/loop-invgen/SpamAssassin-loop.i.v+cfa-reducer.c[4750,4763] [2021-10-29 05:16:13,901 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-29 05:16:13,917 INFO L208 MainTranslator]: Completed translation [2021-10-29 05:16:13,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13 WrapperNode [2021-10-29 05:16:13,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-29 05:16:13,919 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-29 05:16:13,919 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-29 05:16:13,919 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-29 05:16:13,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,938 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-29 05:16:13,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-29 05:16:13,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-29 05:16:13,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-29 05:16:13,976 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,979 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,990 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:13,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-29 05:16:13,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-29 05:16:13,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-29 05:16:13,994 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-29 05:16:13,995 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (1/1) ... [2021-10-29 05:16:14,015 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-10-29 05:16:14,037 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/z3 [2021-10-29 05:16:14,056 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-10-29 05:16:14,086 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-10-29 05:16:14,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-10-29 05:16:14,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-10-29 05:16:14,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-29 05:16:14,103 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-29 05:16:14,439 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-29 05:16:14,440 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-10-29 05:16:14,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:16:14 BoogieIcfgContainer [2021-10-29 05:16:14,443 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-29 05:16:14,445 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-10-29 05:16:14,445 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-10-29 05:16:14,465 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-10-29 05:16:14,465 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:16:13" (1/3) ... [2021-10-29 05:16:14,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109f3227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:16:14, skipping insertion in model container [2021-10-29 05:16:14,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:16:13" (2/3) ... [2021-10-29 05:16:14,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@109f3227 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:16:14, skipping insertion in model container [2021-10-29 05:16:14,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:16:14" (3/3) ... [2021-10-29 05:16:14,468 INFO L111 eAbstractionObserver]: Analyzing ICFG SpamAssassin-loop.i.v+cfa-reducer.c [2021-10-29 05:16:14,474 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-10-29 05:16:14,475 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-10-29 05:16:14,559 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-10-29 05:16:14,566 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 [2021-10-29 05:16:14,566 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-10-29 05:16:14,583 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 57 states have internal predecessors, (79), 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) [2021-10-29 05:16:14,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-10-29 05:16:14,588 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:14,592 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:14,593 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:14,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:14,599 INFO L85 PathProgramCache]: Analyzing trace with hash -1750713386, now seen corresponding path program 1 times [2021-10-29 05:16:14,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:14,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923490282] [2021-10-29 05:16:14,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:14,622 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:14,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:14,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:14,879 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:14,879 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923490282] [2021-10-29 05:16:14,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923490282] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:14,880 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:14,881 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-10-29 05:16:14,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94749007] [2021-10-29 05:16:14,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-10-29 05:16:14,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:14,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-10-29 05:16:14,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:16:14,905 INFO L87 Difference]: Start difference. First operand has 58 states, 41 states have (on average 1.9268292682926829) internal successors, (79), 57 states have internal predecessors, (79), 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 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:14,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:14,938 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2021-10-29 05:16:14,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-10-29 05:16:14,942 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2021-10-29 05:16:14,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:14,953 INFO L225 Difference]: With dead ends: 79 [2021-10-29 05:16:14,954 INFO L226 Difference]: Without dead ends: 71 [2021-10-29 05:16:14,957 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-10-29 05:16:14,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2021-10-29 05:16:14,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 54. [2021-10-29 05:16:15,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 39 states have (on average 1.4871794871794872) internal successors, (58), 53 states have internal predecessors, (58), 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) [2021-10-29 05:16:15,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 58 transitions. [2021-10-29 05:16:15,007 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 58 transitions. Word has length 8 [2021-10-29 05:16:15,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:15,008 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 58 transitions. [2021-10-29 05:16:15,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:15,009 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 58 transitions. [2021-10-29 05:16:15,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:16:15,010 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:15,010 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:15,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-10-29 05:16:15,011 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:15,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:15,015 INFO L85 PathProgramCache]: Analyzing trace with hash 1562463944, now seen corresponding path program 1 times [2021-10-29 05:16:15,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:15,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058590602] [2021-10-29 05:16:15,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:15,017 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:15,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:15,092 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:15,093 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:15,093 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058590602] [2021-10-29 05:16:15,093 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058590602] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:15,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:15,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:16:15,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487564115] [2021-10-29 05:16:15,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:16:15,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:15,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:16:15,098 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:16:15,098 INFO L87 Difference]: Start difference. First operand 54 states and 58 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:15,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:15,168 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2021-10-29 05:16:15,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:16:15,169 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:16:15,169 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:15,170 INFO L225 Difference]: With dead ends: 72 [2021-10-29 05:16:15,171 INFO L226 Difference]: Without dead ends: 70 [2021-10-29 05:16:15,172 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:15,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-10-29 05:16:15,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 52. [2021-10-29 05:16:15,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 38 states have (on average 1.4736842105263157) internal successors, (56), 51 states have internal predecessors, (56), 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) [2021-10-29 05:16:15,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 56 transitions. [2021-10-29 05:16:15,179 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 56 transitions. Word has length 9 [2021-10-29 05:16:15,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:15,180 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 56 transitions. [2021-10-29 05:16:15,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:15,181 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 56 transitions. [2021-10-29 05:16:15,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-10-29 05:16:15,181 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:15,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:15,182 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-10-29 05:16:15,182 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:15,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:15,183 INFO L85 PathProgramCache]: Analyzing trace with hash 1566110362, now seen corresponding path program 1 times [2021-10-29 05:16:15,183 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:15,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637847380] [2021-10-29 05:16:15,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:15,184 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:15,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:15,262 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:15,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637847380] [2021-10-29 05:16:15,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637847380] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:15,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:15,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:16:15,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133568222] [2021-10-29 05:16:15,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:16:15,265 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:15,266 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:16:15,266 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:16:15,266 INFO L87 Difference]: Start difference. First operand 52 states and 56 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:15,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:15,350 INFO L93 Difference]: Finished difference Result 142 states and 157 transitions. [2021-10-29 05:16:15,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:16:15,350 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-10-29 05:16:15,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:15,352 INFO L225 Difference]: With dead ends: 142 [2021-10-29 05:16:15,352 INFO L226 Difference]: Without dead ends: 92 [2021-10-29 05:16:15,353 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:15,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-10-29 05:16:15,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 51. [2021-10-29 05:16:15,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 38 states have (on average 1.4473684210526316) internal successors, (55), 50 states have internal predecessors, (55), 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) [2021-10-29 05:16:15,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2021-10-29 05:16:15,361 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 9 [2021-10-29 05:16:15,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:15,362 INFO L470 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2021-10-29 05:16:15,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:15,362 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2021-10-29 05:16:15,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-10-29 05:16:15,363 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:15,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:15,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-10-29 05:16:15,363 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:15,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:15,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1304785047, now seen corresponding path program 1 times [2021-10-29 05:16:15,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:15,365 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088316128] [2021-10-29 05:16:15,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:15,365 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:15,468 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:15,469 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:15,469 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088316128] [2021-10-29 05:16:15,469 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088316128] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:15,470 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:15,470 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:16:15,470 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340704691] [2021-10-29 05:16:15,471 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:16:15,471 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:15,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:16:15,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:16:15,472 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:16:15,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:15,581 INFO L93 Difference]: Finished difference Result 91 states and 99 transitions. [2021-10-29 05:16:15,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:16:15,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10 [2021-10-29 05:16:15,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:15,584 INFO L225 Difference]: With dead ends: 91 [2021-10-29 05:16:15,584 INFO L226 Difference]: Without dead ends: 89 [2021-10-29 05:16:15,584 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:15,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-10-29 05:16:15,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 49. [2021-10-29 05:16:15,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 37 states have (on average 1.4324324324324325) internal successors, (53), 48 states have internal predecessors, (53), 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) [2021-10-29 05:16:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2021-10-29 05:16:15,593 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 10 [2021-10-29 05:16:15,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:15,593 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2021-10-29 05:16:15,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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) [2021-10-29 05:16:15,594 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2021-10-29 05:16:15,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:16:15,595 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:15,595 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:15,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-10-29 05:16:15,596 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:15,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:15,597 INFO L85 PathProgramCache]: Analyzing trace with hash -1710544404, now seen corresponding path program 1 times [2021-10-29 05:16:15,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:15,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437971358] [2021-10-29 05:16:15,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:15,598 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:15,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:15,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:15,663 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:15,663 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437971358] [2021-10-29 05:16:15,664 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437971358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:15,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:15,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:16:15,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754166105] [2021-10-29 05:16:15,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:16:15,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:15,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:16:15,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:16:15,667 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:16:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:15,728 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2021-10-29 05:16:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:16:15,728 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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 11 [2021-10-29 05:16:15,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:15,730 INFO L225 Difference]: With dead ends: 68 [2021-10-29 05:16:15,730 INFO L226 Difference]: Without dead ends: 66 [2021-10-29 05:16:15,730 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-10-29 05:16:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 47. [2021-10-29 05:16:15,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 36 states have (on average 1.4166666666666667) internal successors, (51), 46 states have internal predecessors, (51), 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) [2021-10-29 05:16:15,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2021-10-29 05:16:15,738 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 11 [2021-10-29 05:16:15,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:15,738 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2021-10-29 05:16:15,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 4 states have internal predecessors, (11), 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) [2021-10-29 05:16:15,739 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2021-10-29 05:16:15,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-10-29 05:16:15,740 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:15,740 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:15,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-10-29 05:16:15,741 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:15,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:15,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1793634881, now seen corresponding path program 1 times [2021-10-29 05:16:15,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:15,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130521358] [2021-10-29 05:16:15,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:15,743 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:15,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:15,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:15,819 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:15,819 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130521358] [2021-10-29 05:16:15,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130521358] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:15,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:15,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:16:15,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922136686] [2021-10-29 05:16:15,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:16:15,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:15,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:16:15,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:15,825 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-10-29 05:16:15,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:15,988 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2021-10-29 05:16:15,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:16:15,989 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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 11 [2021-10-29 05:16:15,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:15,991 INFO L225 Difference]: With dead ends: 86 [2021-10-29 05:16:15,991 INFO L226 Difference]: Without dead ends: 84 [2021-10-29 05:16:15,992 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:16:15,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2021-10-29 05:16:15,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 45. [2021-10-29 05:16:16,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45 states, 35 states have (on average 1.4) internal successors, (49), 44 states have internal predecessors, (49), 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) [2021-10-29 05:16:16,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2021-10-29 05:16:16,005 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 11 [2021-10-29 05:16:16,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:16,006 INFO L470 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2021-10-29 05:16:16,006 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 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) [2021-10-29 05:16:16,007 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2021-10-29 05:16:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:16:16,008 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:16,008 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:16,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-10-29 05:16:16,009 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:16,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1487264860, now seen corresponding path program 1 times [2021-10-29 05:16:16,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:16,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697278279] [2021-10-29 05:16:16,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:16,011 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:16,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:16,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:16,119 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:16,119 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697278279] [2021-10-29 05:16:16,119 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697278279] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:16,119 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:16,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:16:16,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385421331] [2021-10-29 05:16:16,121 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:16:16,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:16,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:16:16,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:16,122 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-10-29 05:16:16,277 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:16,278 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2021-10-29 05:16:16,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:16:16,281 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2021-10-29 05:16:16,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:16,284 INFO L225 Difference]: With dead ends: 74 [2021-10-29 05:16:16,284 INFO L226 Difference]: Without dead ends: 72 [2021-10-29 05:16:16,285 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:16:16,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2021-10-29 05:16:16,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 43. [2021-10-29 05:16:16,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 34 states have (on average 1.3823529411764706) internal successors, (47), 42 states have internal predecessors, (47), 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) [2021-10-29 05:16:16,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2021-10-29 05:16:16,302 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 12 [2021-10-29 05:16:16,303 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:16,303 INFO L470 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2021-10-29 05:16:16,303 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 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) [2021-10-29 05:16:16,303 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2021-10-29 05:16:16,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-10-29 05:16:16,305 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:16,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:16,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-10-29 05:16:16,305 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:16,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:16,306 INFO L85 PathProgramCache]: Analyzing trace with hash -231889442, now seen corresponding path program 1 times [2021-10-29 05:16:16,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:16,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569112884] [2021-10-29 05:16:16,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:16,307 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:16,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:16,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:16,383 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:16,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569112884] [2021-10-29 05:16:16,384 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569112884] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:16,384 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:16,384 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:16:16,384 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1471004136] [2021-10-29 05:16:16,385 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:16:16,385 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:16,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:16:16,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:16:16,386 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-29 05:16:16,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:16,448 INFO L93 Difference]: Finished difference Result 82 states and 90 transitions. [2021-10-29 05:16:16,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:16:16,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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 12 [2021-10-29 05:16:16,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:16,450 INFO L225 Difference]: With dead ends: 82 [2021-10-29 05:16:16,450 INFO L226 Difference]: Without dead ends: 80 [2021-10-29 05:16:16,451 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:16,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-29 05:16:16,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 41. [2021-10-29 05:16:16,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 33 states have (on average 1.3636363636363635) internal successors, (45), 40 states have internal predecessors, (45), 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) [2021-10-29 05:16:16,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2021-10-29 05:16:16,463 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 12 [2021-10-29 05:16:16,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:16,464 INFO L470 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2021-10-29 05:16:16,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 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) [2021-10-29 05:16:16,464 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2021-10-29 05:16:16,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-10-29 05:16:16,465 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:16,465 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:16,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-10-29 05:16:16,466 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:16,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:16,466 INFO L85 PathProgramCache]: Analyzing trace with hash 1139433715, now seen corresponding path program 1 times [2021-10-29 05:16:16,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:16,467 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884152276] [2021-10-29 05:16:16,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:16,467 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:16,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:16,525 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:16,526 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:16,526 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884152276] [2021-10-29 05:16:16,526 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884152276] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:16,526 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:16,527 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:16:16,527 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [578140624] [2021-10-29 05:16:16,527 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:16:16,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:16,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:16:16,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:16,529 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:16,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:16,597 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-10-29 05:16:16,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:16:16,597 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2021-10-29 05:16:16,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:16,598 INFO L225 Difference]: With dead ends: 56 [2021-10-29 05:16:16,598 INFO L226 Difference]: Without dead ends: 54 [2021-10-29 05:16:16,599 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-10-29 05:16:16,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-29 05:16:16,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 39. [2021-10-29 05:16:16,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 32 states have (on average 1.34375) internal successors, (43), 38 states have internal predecessors, (43), 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) [2021-10-29 05:16:16,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2021-10-29 05:16:16,618 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 13 [2021-10-29 05:16:16,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:16,618 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2021-10-29 05:16:16,618 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:16,618 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2021-10-29 05:16:16,619 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-10-29 05:16:16,619 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:16,619 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:16,619 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-10-29 05:16:16,620 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:16,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:16,620 INFO L85 PathProgramCache]: Analyzing trace with hash 962710923, now seen corresponding path program 1 times [2021-10-29 05:16:16,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:16,621 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819895316] [2021-10-29 05:16:16,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:16,621 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:16,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:16,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:16,702 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:16,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819895316] [2021-10-29 05:16:16,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819895316] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:16,704 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:16,704 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:16:16,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116350402] [2021-10-29 05:16:16,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:16:16,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:16,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:16:16,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:16:16,706 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-29 05:16:16,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:16,757 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2021-10-29 05:16:16,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-10-29 05:16:16,757 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 14 [2021-10-29 05:16:16,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:16,758 INFO L225 Difference]: With dead ends: 56 [2021-10-29 05:16:16,759 INFO L226 Difference]: Without dead ends: 54 [2021-10-29 05:16:16,759 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:16,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-10-29 05:16:16,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 37. [2021-10-29 05:16:16,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37 states, 31 states have (on average 1.3225806451612903) internal successors, (41), 36 states have internal predecessors, (41), 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) [2021-10-29 05:16:16,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2021-10-29 05:16:16,765 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 14 [2021-10-29 05:16:16,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:16,765 INFO L470 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2021-10-29 05:16:16,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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) [2021-10-29 05:16:16,766 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2021-10-29 05:16:16,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-10-29 05:16:16,767 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:16,767 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:16,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-10-29 05:16:16,768 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash -220728326, now seen corresponding path program 1 times [2021-10-29 05:16:16,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:16,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909541044] [2021-10-29 05:16:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:16,774 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:16,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:16,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:16,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:16,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909541044] [2021-10-29 05:16:16,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909541044] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:16,849 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:16,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-10-29 05:16:16,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70221916] [2021-10-29 05:16:16,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-10-29 05:16:16,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:16,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-10-29 05:16:16,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-10-29 05:16:16,852 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:16,912 INFO L93 Difference]: Finished difference Result 64 states and 72 transitions. [2021-10-29 05:16:16,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:16:16,913 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2021-10-29 05:16:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:16,914 INFO L225 Difference]: With dead ends: 64 [2021-10-29 05:16:16,914 INFO L226 Difference]: Without dead ends: 62 [2021-10-29 05:16:16,915 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:16,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2021-10-29 05:16:16,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 35. [2021-10-29 05:16:16,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 30 states have (on average 1.3) internal successors, (39), 34 states have internal predecessors, (39), 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) [2021-10-29 05:16:16,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2021-10-29 05:16:16,926 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 15 [2021-10-29 05:16:16,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:16,927 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2021-10-29 05:16:16,927 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:16,928 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2021-10-29 05:16:16,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-10-29 05:16:16,929 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:16,937 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:16,938 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-10-29 05:16:16,938 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:16,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:16,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1747360626, now seen corresponding path program 1 times [2021-10-29 05:16:16,939 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:16,939 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756873944] [2021-10-29 05:16:16,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:16,940 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:16,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:17,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:17,019 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:17,019 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756873944] [2021-10-29 05:16:17,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756873944] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:17,019 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:17,020 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:16:17,020 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585703392] [2021-10-29 05:16:17,021 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:16:17,021 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:17,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:16:17,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:17,022 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-29 05:16:17,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:17,120 INFO L93 Difference]: Finished difference Result 69 states and 80 transitions. [2021-10-29 05:16:17,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-10-29 05:16:17,121 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2021-10-29 05:16:17,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:17,122 INFO L225 Difference]: With dead ends: 69 [2021-10-29 05:16:17,122 INFO L226 Difference]: Without dead ends: 67 [2021-10-29 05:16:17,122 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:16:17,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2021-10-29 05:16:17,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 33. [2021-10-29 05:16:17,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 29 states have (on average 1.2758620689655173) internal successors, (37), 32 states have internal predecessors, (37), 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) [2021-10-29 05:16:17,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2021-10-29 05:16:17,136 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 16 [2021-10-29 05:16:17,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:17,138 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2021-10-29 05:16:17,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2021-10-29 05:16:17,139 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2021-10-29 05:16:17,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-10-29 05:16:17,141 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:17,141 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:17,141 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-10-29 05:16:17,142 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:17,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:17,142 INFO L85 PathProgramCache]: Analyzing trace with hash -1666391295, now seen corresponding path program 1 times [2021-10-29 05:16:17,142 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:17,143 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633540045] [2021-10-29 05:16:17,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:17,143 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:17,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:17,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:17,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:17,236 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633540045] [2021-10-29 05:16:17,237 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633540045] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:17,237 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:17,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:16:17,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043057019] [2021-10-29 05:16:17,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:16:17,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:17,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:16:17,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:16:17,239 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-29 05:16:17,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:17,349 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2021-10-29 05:16:17,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:16:17,349 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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 17 [2021-10-29 05:16:17,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:17,351 INFO L225 Difference]: With dead ends: 57 [2021-10-29 05:16:17,351 INFO L226 Difference]: Without dead ends: 55 [2021-10-29 05:16:17,356 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:16:17,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-10-29 05:16:17,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 31. [2021-10-29 05:16:17,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 28 states have (on average 1.25) internal successors, (35), 30 states have internal predecessors, (35), 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) [2021-10-29 05:16:17,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2021-10-29 05:16:17,364 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 17 [2021-10-29 05:16:17,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:17,365 INFO L470 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2021-10-29 05:16:17,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 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) [2021-10-29 05:16:17,365 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2021-10-29 05:16:17,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-10-29 05:16:17,369 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:17,369 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:17,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-10-29 05:16:17,369 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:17,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:17,370 INFO L85 PathProgramCache]: Analyzing trace with hash -118518439, now seen corresponding path program 1 times [2021-10-29 05:16:17,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:17,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831489571] [2021-10-29 05:16:17,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:17,371 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:17,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:17,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:17,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:17,435 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831489571] [2021-10-29 05:16:17,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831489571] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:17,435 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:17,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-10-29 05:16:17,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571220880] [2021-10-29 05:16:17,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-10-29 05:16:17,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:17,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-10-29 05:16:17,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-10-29 05:16:17,437 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:17,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:17,544 INFO L93 Difference]: Finished difference Result 82 states and 96 transitions. [2021-10-29 05:16:17,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-10-29 05:16:17,545 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-10-29 05:16:17,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:17,546 INFO L225 Difference]: With dead ends: 82 [2021-10-29 05:16:17,546 INFO L226 Difference]: Without dead ends: 80 [2021-10-29 05:16:17,548 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-10-29 05:16:17,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2021-10-29 05:16:17,552 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 29. [2021-10-29 05:16:17,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 28 states have internal predecessors, (33), 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) [2021-10-29 05:16:17,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2021-10-29 05:16:17,554 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 18 [2021-10-29 05:16:17,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:17,554 INFO L470 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2021-10-29 05:16:17,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.6) internal successors, (18), 5 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-29 05:16:17,554 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2021-10-29 05:16:17,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-10-29 05:16:17,555 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:17,556 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:17,556 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-10-29 05:16:17,556 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:17,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:17,557 INFO L85 PathProgramCache]: Analyzing trace with hash 620899848, now seen corresponding path program 1 times [2021-10-29 05:16:17,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:17,557 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [612782887] [2021-10-29 05:16:17,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:17,558 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:17,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:17,627 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:17,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [612782887] [2021-10-29 05:16:17,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [612782887] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:17,628 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:17,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:16:17,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118302759] [2021-10-29 05:16:17,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:16:17,631 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:17,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:16:17,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:16:17,632 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-10-29 05:16:17,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:17,733 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2021-10-29 05:16:17,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:16:17,733 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2021-10-29 05:16:17,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:17,734 INFO L225 Difference]: With dead ends: 55 [2021-10-29 05:16:17,734 INFO L226 Difference]: Without dead ends: 53 [2021-10-29 05:16:17,739 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2021-10-29 05:16:17,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-10-29 05:16:17,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 27. [2021-10-29 05:16:17,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 26 states have (on average 1.1923076923076923) internal successors, (31), 26 states have internal predecessors, (31), 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) [2021-10-29 05:16:17,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2021-10-29 05:16:17,744 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 19 [2021-10-29 05:16:17,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:17,744 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2021-10-29 05:16:17,745 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 6 states have internal predecessors, (19), 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) [2021-10-29 05:16:17,745 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2021-10-29 05:16:17,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-10-29 05:16:17,746 INFO L505 BasicCegarLoop]: Found error trace [2021-10-29 05:16:17,746 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:17,747 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-10-29 05:16:17,748 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-10-29 05:16:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-29 05:16:17,749 INFO L85 PathProgramCache]: Analyzing trace with hash 2068030272, now seen corresponding path program 1 times [2021-10-29 05:16:17,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-10-29 05:16:17,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086614638] [2021-10-29 05:16:17,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-29 05:16:17,750 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-29 05:16:17,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-29 05:16:17,813 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-29 05:16:17,813 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-10-29 05:16:17,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086614638] [2021-10-29 05:16:17,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086614638] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-29 05:16:17,817 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-29 05:16:17,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-10-29 05:16:17,818 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2059980236] [2021-10-29 05:16:17,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-10-29 05:16:17,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-10-29 05:16:17,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-10-29 05:16:17,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-10-29 05:16:17,819 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-10-29 05:16:17,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-29 05:16:17,972 INFO L93 Difference]: Finished difference Result 120 states and 142 transitions. [2021-10-29 05:16:17,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-10-29 05:16:17,973 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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 20 [2021-10-29 05:16:17,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-10-29 05:16:17,973 INFO L225 Difference]: With dead ends: 120 [2021-10-29 05:16:17,974 INFO L226 Difference]: Without dead ends: 0 [2021-10-29 05:16:17,975 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-10-29 05:16:17,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-10-29 05:16:17,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-10-29 05:16:17,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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) [2021-10-29 05:16:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-10-29 05:16:17,976 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 20 [2021-10-29 05:16:17,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-10-29 05:16:17,976 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-29 05:16:17,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.3333333333333335) internal successors, (20), 6 states have internal predecessors, (20), 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) [2021-10-29 05:16:17,976 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-10-29 05:16:17,976 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-10-29 05:16:17,979 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,980 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,981 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,982 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,983 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION [2021-10-29 05:16:17,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-10-29 05:16:17,985 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2021-10-29 05:16:17,989 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:16:18,098 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:16:18,222 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:16:18,224 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout 10000 ms and remaining time -1 ms [2021-10-29 05:16:18,840 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION(line 177) no Hoare annotation was computed. [2021-10-29 05:16:18,841 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION(line 59) no Hoare annotation was computed. [2021-10-29 05:16:18,841 INFO L857 garLoopResultBuilder]: For program point L217(line 217) no Hoare annotation was computed. [2021-10-29 05:16:18,841 INFO L857 garLoopResultBuilder]: For program point L151(lines 151 281) no Hoare annotation was computed. [2021-10-29 05:16:18,841 INFO L857 garLoopResultBuilder]: For program point L110(lines 110 123) no Hoare annotation was computed. [2021-10-29 05:16:18,841 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION(line 217) no Hoare annotation was computed. [2021-10-29 05:16:18,841 INFO L857 garLoopResultBuilder]: For program point L36(lines 36 300) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point L193(line 193) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION(line 100) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startENTRY(line -1) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point L86(lines 86 127) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point L20(lines 20 312) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point L243(lines 243 267) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point L177(line 177) no Hoare annotation was computed. [2021-10-29 05:16:18,842 INFO L857 garLoopResultBuilder]: For program point L45(lines 45 288) no Hoare annotation was computed. [2021-10-29 05:16:18,843 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION(line 257) no Hoare annotation was computed. [2021-10-29 05:16:18,843 INFO L853 garLoopResultBuilder]: At program point L293(lines 38 294) the Hoare annotation is: (and (<= 0 ULTIMATE.start_main_~main__j~0) (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__len~0) (<= 0 ULTIMATE.start_main_~main__i~0) (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0) (<= (+ ULTIMATE.start_main_~main__j~0 5) ULTIMATE.start_main_~main__bufsize~0)) [2021-10-29 05:16:18,844 INFO L857 garLoopResultBuilder]: For program point L227(lines 227 269) no Hoare annotation was computed. [2021-10-29 05:16:18,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION(line 205) no Hoare annotation was computed. [2021-10-29 05:16:18,844 INFO L857 garLoopResultBuilder]: For program point L153(line 153) no Hoare annotation was computed. [2021-10-29 05:16:18,844 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION(line 88) no Hoare annotation was computed. [2021-10-29 05:16:18,844 INFO L860 garLoopResultBuilder]: At program point L310(lines 13 313) the Hoare annotation is: true [2021-10-29 05:16:18,845 INFO L857 garLoopResultBuilder]: For program point L112(line 112) no Hoare annotation was computed. [2021-10-29 05:16:18,845 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION(line 245) no Hoare annotation was computed. [2021-10-29 05:16:18,845 INFO L857 garLoopResultBuilder]: For program point L203(lines 203 273) no Hoare annotation was computed. [2021-10-29 05:16:18,845 INFO L857 garLoopResultBuilder]: For program point L38(lines 38 294) no Hoare annotation was computed. [2021-10-29 05:16:18,845 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION(line 141) no Hoare annotation was computed. [2021-10-29 05:16:18,846 INFO L857 garLoopResultBuilder]: For program point L88(line 88) no Hoare annotation was computed. [2021-10-29 05:16:18,846 INFO L857 garLoopResultBuilder]: For program point L245(line 245) no Hoare annotation was computed. [2021-10-29 05:16:18,846 INFO L857 garLoopResultBuilder]: For program point L47(line 47) no Hoare annotation was computed. [2021-10-29 05:16:18,846 INFO L857 garLoopResultBuilder]: For program point L229(line 229) no Hoare annotation was computed. [2021-10-29 05:16:18,846 INFO L857 garLoopResultBuilder]: For program point L163(lines 163 279) no Hoare annotation was computed. [2021-10-29 05:16:18,846 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION(line 112) no Hoare annotation was computed. [2021-10-29 05:16:18,846 INFO L853 garLoopResultBuilder]: At program point L304(lines 25 312) the Hoare annotation is: (and (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0) (or (<= 1 ULTIMATE.start_main_~main__i~0) (= ULTIMATE.start_main_~main__i~0 0))) [2021-10-29 05:16:18,847 INFO L857 garLoopResultBuilder]: For program point L205(line 205) no Hoare annotation was computed. [2021-10-29 05:16:18,847 INFO L857 garLoopResultBuilder]: For program point L139(lines 139 283) no Hoare annotation was computed. [2021-10-29 05:16:18,847 INFO L857 garLoopResultBuilder]: For program point L98(lines 98 125) no Hoare annotation was computed. [2021-10-29 05:16:18,848 INFO L857 garLoopResultBuilder]: For program point L255(lines 255 265) no Hoare annotation was computed. [2021-10-29 05:16:18,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION(line 165) no Hoare annotation was computed. [2021-10-29 05:16:18,848 INFO L857 garLoopResultBuilder]: For program point L57(lines 57 286) no Hoare annotation was computed. [2021-10-29 05:16:18,848 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION(line 47) no Hoare annotation was computed. [2021-10-29 05:16:18,848 INFO L857 garLoopResultBuilder]: For program point L74(lines 74 129) no Hoare annotation was computed. [2021-10-29 05:16:18,848 INFO L853 garLoopResultBuilder]: At program point L264(lines 31 306) the Hoare annotation is: (let ((.cse0 (<= (+ ULTIMATE.start_main_~main__j~0 4) ULTIMATE.start_main_~main__bufsize~0)) (.cse3 (<= (+ ULTIMATE.start_main_~main__limit~0 4) ULTIMATE.start_main_~main__bufsize~0))) (let ((.cse1 (<= 1 ULTIMATE.start_main_~main__j~0)) (.cse2 (let ((.cse4 (<= 0 ULTIMATE.start_main_~main__j~0)) (.cse5 (<= 1 ULTIMATE.start_main_~main__i~0))) (or (and .cse4 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~12 0)) .cse3 .cse5) (and .cse0 .cse4 .cse3 .cse5))))) (or (and .cse0 .cse1 .cse2) (and .cse1 (not (= ULTIMATE.start_main_~__VERIFIER_assert__cond~14 0)) .cse2) (and (< ULTIMATE.start_main_~main__i~0 ULTIMATE.start_main_~main__len~0) (<= 0 ULTIMATE.start_main_~main__i~0) .cse3 (= ULTIMATE.start_main_~main__j~0 0))))) [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point L165(line 165) no Hoare annotation was computed. [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point L66(lines 66 285) no Hoare annotation was computed. [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION(line 153) no Hoare annotation was computed. [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point L215(lines 215 271) no Hoare annotation was computed. [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point L141(line 141) no Hoare annotation was computed. [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point L100(line 100) no Hoare annotation was computed. [2021-10-29 05:16:18,849 INFO L857 garLoopResultBuilder]: For program point L257(line 257) no Hoare annotation was computed. [2021-10-29 05:16:18,850 INFO L857 garLoopResultBuilder]: For program point L191(lines 191 275) no Hoare annotation was computed. [2021-10-29 05:16:18,850 INFO L857 garLoopResultBuilder]: For program point L59(line 59) no Hoare annotation was computed. [2021-10-29 05:16:18,850 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION(line 193) no Hoare annotation was computed. [2021-10-29 05:16:18,850 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION(line 76) no Hoare annotation was computed. [2021-10-29 05:16:18,850 INFO L857 garLoopResultBuilder]: For program point L175(lines 175 277) no Hoare annotation was computed. [2021-10-29 05:16:18,850 INFO L857 garLoopResultBuilder]: For program point L76(line 76) no Hoare annotation was computed. [2021-10-29 05:16:18,851 INFO L857 garLoopResultBuilder]: For program point ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION(line 229) no Hoare annotation was computed. [2021-10-29 05:16:18,855 INFO L731 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-10-29 05:16:18,857 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-10-29 05:16:18,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 05:16:18 BoogieIcfgContainer [2021-10-29 05:16:18,891 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-10-29 05:16:18,892 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-29 05:16:18,892 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-29 05:16:18,892 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-29 05:16:18,893 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:16:14" (3/4) ... [2021-10-29 05:16:18,896 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-10-29 05:16:18,914 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2021-10-29 05:16:18,915 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-10-29 05:16:18,915 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:16:18,916 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-10-29 05:16:18,991 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/witness.graphml [2021-10-29 05:16:18,992 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-29 05:16:18,994 INFO L168 Benchmark]: Toolchain (without parser) took 5470.56 ms. Allocated memory was 142.6 MB in the beginning and 218.1 MB in the end (delta: 75.5 MB). Free memory was 99.6 MB in the beginning and 163.1 MB in the end (delta: -63.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:16:18,994 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory is still 115.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:16:18,995 INFO L168 Benchmark]: CACSL2BoogieTranslator took 391.61 ms. Allocated memory is still 142.6 MB. Free memory was 99.3 MB in the beginning and 108.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:16:18,996 INFO L168 Benchmark]: Boogie Procedure Inliner took 46.93 ms. Allocated memory is still 142.6 MB. Free memory was 108.7 MB in the beginning and 106.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-29 05:16:18,996 INFO L168 Benchmark]: Boogie Preprocessor took 26.24 ms. Allocated memory is still 142.6 MB. Free memory was 106.6 MB in the beginning and 105.7 MB in the end (delta: 846.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-29 05:16:18,996 INFO L168 Benchmark]: RCFGBuilder took 449.09 ms. Allocated memory is still 142.6 MB. Free memory was 105.1 MB in the beginning and 91.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-10-29 05:16:18,997 INFO L168 Benchmark]: TraceAbstraction took 4446.52 ms. Allocated memory was 142.6 MB in the beginning and 218.1 MB in the end (delta: 75.5 MB). Free memory was 90.4 MB in the beginning and 168.3 MB in the end (delta: -77.9 MB). Peak memory consumption was 104.5 MB. Max. memory is 16.1 GB. [2021-10-29 05:16:18,998 INFO L168 Benchmark]: Witness Printer took 100.06 ms. Allocated memory is still 218.1 MB. Free memory was 167.3 MB in the beginning and 163.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-10-29 05:16:19,000 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory is still 115.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 391.61 ms. Allocated memory is still 142.6 MB. Free memory was 99.3 MB in the beginning and 108.7 MB in the end (delta: -9.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 46.93 ms. Allocated memory is still 142.6 MB. Free memory was 108.7 MB in the beginning and 106.6 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 26.24 ms. Allocated memory is still 142.6 MB. Free memory was 106.6 MB in the beginning and 105.7 MB in the end (delta: 846.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 449.09 ms. Allocated memory is still 142.6 MB. Free memory was 105.1 MB in the beginning and 91.0 MB in the end (delta: 14.1 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 4446.52 ms. Allocated memory was 142.6 MB in the beginning and 218.1 MB in the end (delta: 75.5 MB). Free memory was 90.4 MB in the beginning and 168.3 MB in the end (delta: -77.9 MB). Peak memory consumption was 104.5 MB. Max. memory is 16.1 GB. * Witness Printer took 100.06 ms. Allocated memory is still 218.1 MB. Free memory was 167.3 MB in the beginning and 163.1 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 47]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 59]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 76]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 88]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 100]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 112]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 141]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 153]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 165]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 177]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 193]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 205]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 217]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 229]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 245]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 257]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 58 locations, 16 error locations. Started 1 CEGAR loops. OverallTime: 4.3s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.8s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 865 SDtfs, 1265 SDslu, 689 SDs, 0 SdLazy, 918 SolverSat, 102 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 112 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=58occurred in iteration=0, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 436 StatesRemovedByMinimization, 15 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 4 LocationsWithAnnotation, 4 PreInvPairs, 25 NumberOfFragments, 135 HoareAnnotationTreeSize, 4 FomulaSimplifications, 233224006 FormulaSimplificationTreeSizeReduction, 0.3s HoareSimplificationTime, 4 FomulaSimplificationsInter, 74415 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 214 NumberOfCodeBlocks, 214 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 198 ConstructedInterpolants, 0 QuantifiedInterpolants, 622 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 16 InterpolantComputations, 16 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 16 specifications checked. All of them hold - InvariantResult [Line: 38]: Loop Invariant Derived loop invariant: (((0 <= main__j && main__i < main__len) && 0 <= main__i) && main__limit + 4 <= main__bufsize) && main__j + 5 <= main__bufsize - InvariantResult [Line: 31]: Loop Invariant Derived loop invariant: (((main__j + 4 <= main__bufsize && 1 <= main__j) && ((((0 <= main__j && !(__VERIFIER_assert__cond == 0)) && main__limit + 4 <= main__bufsize) && 1 <= main__i) || (((main__j + 4 <= main__bufsize && 0 <= main__j) && main__limit + 4 <= main__bufsize) && 1 <= main__i))) || ((1 <= main__j && !(__VERIFIER_assert__cond == 0)) && ((((0 <= main__j && !(__VERIFIER_assert__cond == 0)) && main__limit + 4 <= main__bufsize) && 1 <= main__i) || (((main__j + 4 <= main__bufsize && 0 <= main__j) && main__limit + 4 <= main__bufsize) && 1 <= main__i)))) || (((main__i < main__len && 0 <= main__i) && main__limit + 4 <= main__bufsize) && main__j == 0) - InvariantResult [Line: 13]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: main__limit + 4 <= main__bufsize && (1 <= main__i || main__i == 0) RESULT: Ultimate proved your program to be correct! [2021-10-29 05:16:19,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e89adc3-fe71-4f5f-b6ca-967da244dac2/bin/utaipan-SDwSMHVbGG/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...