./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs --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 f8b90978b682a83c8f6f0d2fe75b83e30918fdef6451144e6a40fff2a4b9e706 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:30:38,026 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:30:38,029 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:30:38,066 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:30:38,068 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:30:38,072 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:30:38,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:30:38,080 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:30:38,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:30:38,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:30:38,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:30:38,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:30:38,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:30:38,098 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:30:38,100 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:30:38,102 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:30:38,106 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:30:38,107 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:30:38,112 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:30:38,117 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:30:38,121 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:30:38,123 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:30:38,124 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:30:38,125 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:30:38,129 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:30:38,136 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:30:38,137 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:30:38,138 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:30:38,140 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:30:38,141 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:30:38,142 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:30:38,143 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:30:38,145 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:30:38,146 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:30:38,148 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:30:38,149 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:30:38,150 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:30:38,150 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:30:38,150 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:30:38,152 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:30:38,153 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:30:38,155 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:30:38,192 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:30:38,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:30:38,193 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:30:38,193 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:30:38,193 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:30:38,194 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:30:38,194 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:30:38,194 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:30:38,194 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:30:38,195 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:30:38,195 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:30:38,201 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:30:38,202 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:30:38,202 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:30:38,202 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:30:38,203 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:30:38,204 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:30:38,204 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:30:38,204 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:30:38,204 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:30:38,204 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:30:38,205 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:30:38,205 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:30:38,205 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:30:38,205 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:30:38,206 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:30:38,206 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:30:38,206 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:30:38,206 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:30:38,207 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:30:38,207 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:30:38,207 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:38,208 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:30:38,208 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:30:38,208 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:30:38,208 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:30:38,209 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:30:38,210 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:30:38,210 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:30:38,210 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:30:38,211 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_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f8b90978b682a83c8f6f0d2fe75b83e30918fdef6451144e6a40fff2a4b9e706 [2021-11-19 13:30:38,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:30:38,508 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:30:38,511 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:30:38,512 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:30:38,513 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:30:38,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2021-11-19 13:30:38,595 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/data/734710d90/8b1ad13aa4c040cf8084e04492a13da9/FLAG84f330c0e [2021-11-19 13:30:39,610 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:30:39,611 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2021-11-19 13:30:39,679 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/data/734710d90/8b1ad13aa4c040cf8084e04492a13da9/FLAG84f330c0e [2021-11-19 13:30:39,882 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/data/734710d90/8b1ad13aa4c040cf8084e04492a13da9 [2021-11-19 13:30:39,885 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:30:39,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:30:39,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:39,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:30:39,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:30:39,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:39" (1/1) ... [2021-11-19 13:30:39,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24d89f26 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:39, skipping insertion in model container [2021-11-19 13:30:39,894 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:30:39" (1/1) ... [2021-11-19 13:30:39,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:30:40,352 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:30:41,908 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[172160,172173] [2021-11-19 13:30:42,266 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[250199,250212] [2021-11-19 13:30:42,416 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[289422,289435] [2021-11-19 13:30:42,489 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[309133,309146] [2021-11-19 13:30:42,528 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[319011,319024] [2021-11-19 13:30:42,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[323922,323935] [2021-11-19 13:30:42,569 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[328750,328763] [2021-11-19 13:30:42,848 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[405185,405198] [2021-11-19 13:30:43,007 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[443553,443566] [2021-11-19 13:30:43,105 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[463065,463078] [2021-11-19 13:30:43,144 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[472989,473002] [2021-11-19 13:30:43,164 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[477943,477956] [2021-11-19 13:30:43,184 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[482814,482827] [2021-11-19 13:30:43,319 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[521320,521333] [2021-11-19 13:30:43,389 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[540838,540851] [2021-11-19 13:30:43,427 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[550762,550775] [2021-11-19 13:30:43,448 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[555716,555729] [2021-11-19 13:30:43,467 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[560575,560588] [2021-11-19 13:30:43,549 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[581321,581334] [2021-11-19 13:30:43,589 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[591188,591201] [2021-11-19 13:30:43,609 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[596115,596128] [2021-11-19 13:30:43,629 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[600957,600970] [2021-11-19 13:30:43,651 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[606379,606392] [2021-11-19 13:30:43,670 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[611215,611228] [2021-11-19 13:30:43,690 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[616142,616155] [2021-11-19 13:30:43,710 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[620984,620997] [2021-11-19 13:30:43,729 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[626027,626040] [2021-11-19 13:30:43,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[631036,631049] [2021-11-19 13:30:43,770 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[635974,635987] [2021-11-19 13:30:43,862 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:43,889 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:30:44,509 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[172160,172173] [2021-11-19 13:30:44,734 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[250199,250212] [2021-11-19 13:30:44,857 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[289422,289435] [2021-11-19 13:30:44,922 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[309133,309146] [2021-11-19 13:30:44,956 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[319011,319024] [2021-11-19 13:30:44,973 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[323922,323935] [2021-11-19 13:30:44,992 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[328750,328763] [2021-11-19 13:30:45,214 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[405185,405198] [2021-11-19 13:30:45,332 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[443553,443566] [2021-11-19 13:30:45,441 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[463065,463078] [2021-11-19 13:30:45,475 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[472989,473002] [2021-11-19 13:30:45,493 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[477943,477956] [2021-11-19 13:30:45,510 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[482814,482827] [2021-11-19 13:30:45,622 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[521320,521333] [2021-11-19 13:30:45,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[540838,540851] [2021-11-19 13:30:45,716 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[550762,550775] [2021-11-19 13:30:45,733 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[555716,555729] [2021-11-19 13:30:45,750 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[560575,560588] [2021-11-19 13:30:45,816 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[581321,581334] [2021-11-19 13:30:45,850 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[591188,591201] [2021-11-19 13:30:45,867 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[596115,596128] [2021-11-19 13:30:45,885 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[600957,600970] [2021-11-19 13:30:45,904 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[606379,606392] [2021-11-19 13:30:45,920 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[611215,611228] [2021-11-19 13:30:45,936 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[616142,616155] [2021-11-19 13:30:45,952 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[620984,620997] [2021-11-19 13:30:45,971 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[626027,626040] [2021-11-19 13:30:45,989 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[631036,631049] [2021-11-19 13:30:46,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c[635974,635987] [2021-11-19 13:30:46,062 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:30:46,106 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:30:46,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46 WrapperNode [2021-11-19 13:30:46,107 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:30:46,108 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:46,108 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:30:46,108 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:30:46,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:46,258 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:46,647 INFO L137 Inliner]: procedures = 26, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 26578 [2021-11-19 13:30:46,648 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:30:46,649 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:30:46,649 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:30:46,649 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:30:46,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:46,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:46,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:46,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:46,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:47,049 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:47,076 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:47,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:30:47,242 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:30:47,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:30:47,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:30:47,247 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (1/1) ... [2021-11-19 13:30:47,255 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:30:47,266 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:30:47,284 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:30:47,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d163e692-b0fe-43aa-acf5-779a6bfee5d3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:30:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:30:47,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:30:47,334 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:30:47,334 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:30:48,013 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:30:48,015 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:30:58,745 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:31:00,451 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:31:00,451 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:31:00,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:31:00 BoogieIcfgContainer [2021-11-19 13:31:00,460 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:31:00,463 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:31:00,463 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:31:00,467 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:31:00,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:30:39" (1/3) ... [2021-11-19 13:31:00,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9aca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:31:00, skipping insertion in model container [2021-11-19 13:31:00,468 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:30:46" (2/3) ... [2021-11-19 13:31:00,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2c9aca0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:31:00, skipping insertion in model container [2021-11-19 13:31:00,469 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:31:00" (3/3) ... [2021-11-19 13:31:00,470 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.7.1.ufo.BOUNDED-14.pals.c.v+sep-reducer.c [2021-11-19 13:31:00,484 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:31:00,484 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 29 error locations. [2021-11-19 13:31:00,581 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:31:00,591 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:31:00,591 INFO L340 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2021-11-19 13:31:00,723 INFO L276 IsEmpty]: Start isEmpty. Operand has 5383 states, 5353 states have (on average 1.7498598916495423) internal successors, (9367), 5382 states have internal predecessors, (9367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:00,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 13:31:00,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:00,780 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:00,781 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:00,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:00,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1843961460, now seen corresponding path program 1 times [2021-11-19 13:31:00,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:00,800 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648879009] [2021-11-19 13:31:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:00,801 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:01,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:01,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:01,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648879009] [2021-11-19 13:31:01,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648879009] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:01,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:01,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:31:01,593 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238971049] [2021-11-19 13:31:01,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:01,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:01,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:01,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:01,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:31:01,660 INFO L87 Difference]: Start difference. First operand has 5383 states, 5353 states have (on average 1.7498598916495423) internal successors, (9367), 5382 states have internal predecessors, (9367), 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 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:07,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:07,370 INFO L93 Difference]: Finished difference Result 7347 states and 12579 transitions. [2021-11-19 13:31:07,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:31:07,374 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 101 [2021-11-19 13:31:07,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:07,427 INFO L225 Difference]: With dead ends: 7347 [2021-11-19 13:31:07,428 INFO L226 Difference]: Without dead ends: 4869 [2021-11-19 13:31:07,442 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:07,454 INFO L933 BasicCegarLoop]: 4188 mSDtfsCounter, 24376 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 4070 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24376 SdHoareTripleChecker+Valid, 4292 SdHoareTripleChecker+Invalid, 4329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 4070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:07,456 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24376 Valid, 4292 Invalid, 4329 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [259 Valid, 4070 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-11-19 13:31:07,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4869 states. [2021-11-19 13:31:07,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4869 to 4869. [2021-11-19 13:31:07,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4869 states, 4840 states have (on average 1.2913223140495869) internal successors, (6250), 4868 states have internal predecessors, (6250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4869 states to 4869 states and 6250 transitions. [2021-11-19 13:31:07,767 INFO L78 Accepts]: Start accepts. Automaton has 4869 states and 6250 transitions. Word has length 101 [2021-11-19 13:31:07,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:07,769 INFO L470 AbstractCegarLoop]: Abstraction has 4869 states and 6250 transitions. [2021-11-19 13:31:07,770 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:07,770 INFO L276 IsEmpty]: Start isEmpty. Operand 4869 states and 6250 transitions. [2021-11-19 13:31:07,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 13:31:07,787 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:07,787 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:07,788 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:31:07,788 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:07,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:07,790 INFO L85 PathProgramCache]: Analyzing trace with hash -564189146, now seen corresponding path program 1 times [2021-11-19 13:31:07,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:07,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297996219] [2021-11-19 13:31:07,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:07,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:08,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:08,043 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:08,043 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297996219] [2021-11-19 13:31:08,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297996219] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:08,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:08,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:31:08,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881652244] [2021-11-19 13:31:08,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:08,046 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:08,046 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:08,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:08,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:31:08,047 INFO L87 Difference]: Start difference. First operand 4869 states and 6250 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:11,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:11,162 INFO L93 Difference]: Finished difference Result 5963 states and 7638 transitions. [2021-11-19 13:31:11,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:31:11,163 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 101 [2021-11-19 13:31:11,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:11,189 INFO L225 Difference]: With dead ends: 5963 [2021-11-19 13:31:11,189 INFO L226 Difference]: Without dead ends: 3569 [2021-11-19 13:31:11,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:11,195 INFO L933 BasicCegarLoop]: 2086 mSDtfsCounter, 13707 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 2545 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13707 SdHoareTripleChecker+Valid, 2106 SdHoareTripleChecker+Invalid, 2648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 2545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:11,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13707 Valid, 2106 Invalid, 2648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 2545 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-11-19 13:31:11,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3569 states. [2021-11-19 13:31:11,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3569 to 3569. [2021-11-19 13:31:11,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3569 states, 3540 states have (on average 1.3076271186440678) internal successors, (4629), 3568 states have internal predecessors, (4629), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:11,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3569 states to 3569 states and 4629 transitions. [2021-11-19 13:31:11,393 INFO L78 Accepts]: Start accepts. Automaton has 3569 states and 4629 transitions. Word has length 101 [2021-11-19 13:31:11,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:11,396 INFO L470 AbstractCegarLoop]: Abstraction has 3569 states and 4629 transitions. [2021-11-19 13:31:11,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:11,397 INFO L276 IsEmpty]: Start isEmpty. Operand 3569 states and 4629 transitions. [2021-11-19 13:31:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-11-19 13:31:11,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:11,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:11,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:31:11,411 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:11,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1247482897, now seen corresponding path program 1 times [2021-11-19 13:31:11,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:11,412 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724647323] [2021-11-19 13:31:11,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:11,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:11,665 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:11,665 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:11,665 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724647323] [2021-11-19 13:31:11,665 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724647323] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:11,666 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:11,666 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:31:11,666 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286666779] [2021-11-19 13:31:11,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:11,667 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:11,667 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:11,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:11,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:31:11,668 INFO L87 Difference]: Start difference. First operand 3569 states and 4629 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:13,926 INFO L93 Difference]: Finished difference Result 4375 states and 5632 transitions. [2021-11-19 13:31:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:31:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 101 [2021-11-19 13:31:13,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:13,943 INFO L225 Difference]: With dead ends: 4375 [2021-11-19 13:31:13,943 INFO L226 Difference]: Without dead ends: 2637 [2021-11-19 13:31:13,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:13,948 INFO L933 BasicCegarLoop]: 1578 mSDtfsCounter, 10130 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 1864 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10130 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:13,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10130 Valid, 1606 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1864 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 13:31:13,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2637 states. [2021-11-19 13:31:14,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2637 to 2637. [2021-11-19 13:31:14,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2637 states, 2608 states have (on average 1.3190184049079754) internal successors, (3440), 2636 states have internal predecessors, (3440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:14,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2637 states to 2637 states and 3440 transitions. [2021-11-19 13:31:14,072 INFO L78 Accepts]: Start accepts. Automaton has 2637 states and 3440 transitions. Word has length 101 [2021-11-19 13:31:14,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:14,073 INFO L470 AbstractCegarLoop]: Abstraction has 2637 states and 3440 transitions. [2021-11-19 13:31:14,073 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:14,073 INFO L276 IsEmpty]: Start isEmpty. Operand 2637 states and 3440 transitions. [2021-11-19 13:31:14,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 13:31:14,080 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:14,080 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:14,080 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:31:14,081 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:14,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:14,081 INFO L85 PathProgramCache]: Analyzing trace with hash -1413940705, now seen corresponding path program 1 times [2021-11-19 13:31:14,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:14,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006745954] [2021-11-19 13:31:14,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:14,082 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:14,286 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:14,287 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:14,287 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006745954] [2021-11-19 13:31:14,287 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2006745954] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:14,289 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:14,289 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:31:14,289 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1266308981] [2021-11-19 13:31:14,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:14,290 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:14,292 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:14,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:14,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:31:14,293 INFO L87 Difference]: Start difference. First operand 2637 states and 3440 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:17,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:17,127 INFO L93 Difference]: Finished difference Result 5008 states and 6556 transitions. [2021-11-19 13:31:17,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:31:17,128 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 103 [2021-11-19 13:31:17,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:17,151 INFO L225 Difference]: With dead ends: 5008 [2021-11-19 13:31:17,151 INFO L226 Difference]: Without dead ends: 3674 [2021-11-19 13:31:17,155 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:17,159 INFO L933 BasicCegarLoop]: 1567 mSDtfsCounter, 12679 mSDsluCounter, 806 mSDsCounter, 0 mSdLazyCounter, 2519 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12679 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 2519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:17,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12679 Valid, 2372 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 2519 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-11-19 13:31:17,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3674 states. [2021-11-19 13:31:17,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3674 to 3475. [2021-11-19 13:31:17,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3475 states, 3446 states have (on average 1.3482298316889147) internal successors, (4646), 3474 states have internal predecessors, (4646), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:17,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3475 states to 3475 states and 4646 transitions. [2021-11-19 13:31:17,395 INFO L78 Accepts]: Start accepts. Automaton has 3475 states and 4646 transitions. Word has length 103 [2021-11-19 13:31:17,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:17,395 INFO L470 AbstractCegarLoop]: Abstraction has 3475 states and 4646 transitions. [2021-11-19 13:31:17,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:17,396 INFO L276 IsEmpty]: Start isEmpty. Operand 3475 states and 4646 transitions. [2021-11-19 13:31:17,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-19 13:31:17,405 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:17,405 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:17,405 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:31:17,405 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:17,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:17,406 INFO L85 PathProgramCache]: Analyzing trace with hash -2001631897, now seen corresponding path program 1 times [2021-11-19 13:31:17,406 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:17,406 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001549662] [2021-11-19 13:31:17,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:17,406 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:17,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:17,603 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:17,603 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:17,603 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001549662] [2021-11-19 13:31:17,603 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001549662] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:17,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:17,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:31:17,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45984359] [2021-11-19 13:31:17,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:17,605 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:17,605 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:17,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:17,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:31:17,606 INFO L87 Difference]: Start difference. First operand 3475 states and 4646 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:19,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:19,437 INFO L93 Difference]: Finished difference Result 5020 states and 6717 transitions. [2021-11-19 13:31:19,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:31:19,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 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 105 [2021-11-19 13:31:19,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:19,458 INFO L225 Difference]: With dead ends: 5020 [2021-11-19 13:31:19,458 INFO L226 Difference]: Without dead ends: 3252 [2021-11-19 13:31:19,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:19,463 INFO L933 BasicCegarLoop]: 1462 mSDtfsCounter, 8923 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8923 SdHoareTripleChecker+Valid, 1474 SdHoareTripleChecker+Invalid, 1575 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:19,466 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8923 Valid, 1474 Invalid, 1575 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1547 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:31:19,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3252 states. [2021-11-19 13:31:19,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3252 to 3252. [2021-11-19 13:31:19,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3252 states, 3223 states have (on average 1.3555693453304374) internal successors, (4369), 3251 states have internal predecessors, (4369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:19,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3252 states to 3252 states and 4369 transitions. [2021-11-19 13:31:19,758 INFO L78 Accepts]: Start accepts. Automaton has 3252 states and 4369 transitions. Word has length 105 [2021-11-19 13:31:19,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:19,760 INFO L470 AbstractCegarLoop]: Abstraction has 3252 states and 4369 transitions. [2021-11-19 13:31:19,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:19,760 INFO L276 IsEmpty]: Start isEmpty. Operand 3252 states and 4369 transitions. [2021-11-19 13:31:19,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-19 13:31:19,768 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:19,769 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:19,769 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:31:19,770 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:19,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:19,771 INFO L85 PathProgramCache]: Analyzing trace with hash -807434659, now seen corresponding path program 1 times [2021-11-19 13:31:19,771 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:19,771 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161077075] [2021-11-19 13:31:19,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:19,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:19,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:19,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:19,948 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:19,948 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161077075] [2021-11-19 13:31:19,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161077075] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:19,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:19,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:31:19,949 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521609153] [2021-11-19 13:31:19,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:19,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:19,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:19,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:19,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:31:19,950 INFO L87 Difference]: Start difference. First operand 3252 states and 4369 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:21,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:21,124 INFO L93 Difference]: Finished difference Result 3585 states and 4737 transitions. [2021-11-19 13:31:21,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:31:21,125 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 107 [2021-11-19 13:31:21,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:21,138 INFO L225 Difference]: With dead ends: 3585 [2021-11-19 13:31:21,138 INFO L226 Difference]: Without dead ends: 2045 [2021-11-19 13:31:21,141 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:21,142 INFO L933 BasicCegarLoop]: 906 mSDtfsCounter, 5358 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5358 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 1054 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:21,143 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5358 Valid, 950 Invalid, 1054 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 953 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:31:21,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2045 states. [2021-11-19 13:31:21,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2045 to 2045. [2021-11-19 13:31:21,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2045 states, 2016 states have (on average 1.3611111111111112) internal successors, (2744), 2044 states have internal predecessors, (2744), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:21,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2045 states to 2045 states and 2744 transitions. [2021-11-19 13:31:21,282 INFO L78 Accepts]: Start accepts. Automaton has 2045 states and 2744 transitions. Word has length 107 [2021-11-19 13:31:21,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:21,283 INFO L470 AbstractCegarLoop]: Abstraction has 2045 states and 2744 transitions. [2021-11-19 13:31:21,283 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:21,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2045 states and 2744 transitions. [2021-11-19 13:31:21,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2021-11-19 13:31:21,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:21,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:21,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:31:21,292 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:21,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:21,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1740881091, now seen corresponding path program 1 times [2021-11-19 13:31:21,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:21,293 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285955067] [2021-11-19 13:31:21,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:21,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:21,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:21,472 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:21,472 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:21,472 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285955067] [2021-11-19 13:31:21,472 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285955067] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:21,473 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:21,473 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:31:21,473 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364678164] [2021-11-19 13:31:21,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:21,474 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:31:21,475 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:21,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:31:21,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:31:21,476 INFO L87 Difference]: Start difference. First operand 2045 states and 2744 transitions. Second operand has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:22,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:22,360 INFO L93 Difference]: Finished difference Result 2651 states and 3518 transitions. [2021-11-19 13:31:22,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:31:22,361 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 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 109 [2021-11-19 13:31:22,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:22,372 INFO L225 Difference]: With dead ends: 2651 [2021-11-19 13:31:22,372 INFO L226 Difference]: Without dead ends: 1617 [2021-11-19 13:31:22,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:22,376 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 4252 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 678 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4252 SdHoareTripleChecker+Valid, 829 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:22,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4252 Valid, 829 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 678 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:31:22,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1617 states. [2021-11-19 13:31:22,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1617 to 1617. [2021-11-19 13:31:22,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.369647355163728) internal successors, (2175), 1616 states have internal predecessors, (2175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:22,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2175 transitions. [2021-11-19 13:31:22,504 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2175 transitions. Word has length 109 [2021-11-19 13:31:22,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:22,505 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2175 transitions. [2021-11-19 13:31:22,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.8) internal successors, (109), 4 states have internal predecessors, (109), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:22,505 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2175 transitions. [2021-11-19 13:31:22,512 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:31:22,513 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:22,513 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:22,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:31:22,513 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:22,515 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:22,515 INFO L85 PathProgramCache]: Analyzing trace with hash -1649960662, now seen corresponding path program 1 times [2021-11-19 13:31:22,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:22,516 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462613095] [2021-11-19 13:31:22,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:22,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:22,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:22,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:22,775 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:22,775 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462613095] [2021-11-19 13:31:22,776 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462613095] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:22,776 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:22,776 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:22,776 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335127295] [2021-11-19 13:31:22,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:22,777 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:22,777 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:22,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:22,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:22,778 INFO L87 Difference]: Start difference. First operand 1617 states and 2175 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:25,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:25,065 INFO L93 Difference]: Finished difference Result 2684 states and 3579 transitions. [2021-11-19 13:31:25,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:25,065 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 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 111 [2021-11-19 13:31:25,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:25,078 INFO L225 Difference]: With dead ends: 2684 [2021-11-19 13:31:25,079 INFO L226 Difference]: Without dead ends: 2347 [2021-11-19 13:31:25,081 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:31:25,081 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 4453 mSDsluCounter, 2717 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4453 SdHoareTripleChecker+Valid, 3599 SdHoareTripleChecker+Invalid, 2916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:25,082 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4453 Valid, 3599 Invalid, 2916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2021-11-19 13:31:25,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2021-11-19 13:31:25,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 1617. [2021-11-19 13:31:25,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3690176322418135) internal successors, (2174), 1616 states have internal predecessors, (2174), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:25,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2174 transitions. [2021-11-19 13:31:25,261 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2174 transitions. Word has length 111 [2021-11-19 13:31:25,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:25,262 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2174 transitions. [2021-11-19 13:31:25,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:25,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2174 transitions. [2021-11-19 13:31:25,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:31:25,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:25,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:25,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 13:31:25,268 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:25,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:25,269 INFO L85 PathProgramCache]: Analyzing trace with hash 258839018, now seen corresponding path program 1 times [2021-11-19 13:31:25,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:25,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259491749] [2021-11-19 13:31:25,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:25,270 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:25,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:25,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:25,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:25,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259491749] [2021-11-19 13:31:25,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259491749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:25,508 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:25,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:25,508 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1610848548] [2021-11-19 13:31:25,508 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:25,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:25,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:25,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:25,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:25,510 INFO L87 Difference]: Start difference. First operand 1617 states and 2174 transitions. Second operand has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:27,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:27,628 INFO L93 Difference]: Finished difference Result 2834 states and 3781 transitions. [2021-11-19 13:31:27,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:27,628 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 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 111 [2021-11-19 13:31:27,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:27,643 INFO L225 Difference]: With dead ends: 2834 [2021-11-19 13:31:27,643 INFO L226 Difference]: Without dead ends: 2693 [2021-11-19 13:31:27,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:31:27,646 INFO L933 BasicCegarLoop]: 876 mSDtfsCounter, 4031 mSDsluCounter, 2895 mSDsCounter, 0 mSdLazyCounter, 3028 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4031 SdHoareTripleChecker+Valid, 3764 SdHoareTripleChecker+Invalid, 3093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:27,647 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4031 Valid, 3764 Invalid, 3093 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3028 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:31:27,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-19 13:31:27,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1617. [2021-11-19 13:31:27,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3683879093198992) internal successors, (2173), 1616 states have internal predecessors, (2173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:27,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2173 transitions. [2021-11-19 13:31:27,824 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2173 transitions. Word has length 111 [2021-11-19 13:31:27,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:27,824 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2173 transitions. [2021-11-19 13:31:27,824 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 13.875) internal successors, (111), 7 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2173 transitions. [2021-11-19 13:31:27,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:31:27,828 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:27,828 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:27,829 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 13:31:27,829 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:27,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:27,830 INFO L85 PathProgramCache]: Analyzing trace with hash 1796391338, now seen corresponding path program 1 times [2021-11-19 13:31:27,830 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:27,830 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171296920] [2021-11-19 13:31:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:27,830 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:28,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:28,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:28,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171296920] [2021-11-19 13:31:28,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171296920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:28,060 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:28,060 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:31:28,060 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827610125] [2021-11-19 13:31:28,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:28,061 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:31:28,061 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:28,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:31:28,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:28,062 INFO L87 Difference]: Start difference. First operand 1617 states and 2173 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:30,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:30,044 INFO L93 Difference]: Finished difference Result 2930 states and 3926 transitions. [2021-11-19 13:31:30,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:31:30,045 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 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 111 [2021-11-19 13:31:30,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:30,054 INFO L225 Difference]: With dead ends: 2930 [2021-11-19 13:31:30,054 INFO L226 Difference]: Without dead ends: 2709 [2021-11-19 13:31:30,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:31:30,057 INFO L933 BasicCegarLoop]: 890 mSDtfsCounter, 6441 mSDsluCounter, 3752 mSDsCounter, 0 mSdLazyCounter, 3685 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6441 SdHoareTripleChecker+Valid, 4633 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 3685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:30,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6441 Valid, 4633 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 3685 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:31:30,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2709 states. [2021-11-19 13:31:30,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2709 to 1617. [2021-11-19 13:31:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3671284634760705) internal successors, (2171), 1616 states have internal predecessors, (2171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:30,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2171 transitions. [2021-11-19 13:31:30,245 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2171 transitions. Word has length 111 [2021-11-19 13:31:30,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:30,245 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2171 transitions. [2021-11-19 13:31:30,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:30,245 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2171 transitions. [2021-11-19 13:31:30,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:31:30,248 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:30,248 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:30,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:31:30,248 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:30,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:30,249 INFO L85 PathProgramCache]: Analyzing trace with hash 326600490, now seen corresponding path program 1 times [2021-11-19 13:31:30,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:30,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875529020] [2021-11-19 13:31:30,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:30,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:30,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:30,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:30,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:30,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875529020] [2021-11-19 13:31:30,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875529020] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:30,548 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:30,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:31:30,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994806070] [2021-11-19 13:31:30,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:30,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:31:30,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:30,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:31:30,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:30,550 INFO L87 Difference]: Start difference. First operand 1617 states and 2171 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:32,971 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:32,971 INFO L93 Difference]: Finished difference Result 2848 states and 3800 transitions. [2021-11-19 13:31:32,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:31:32,972 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 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 111 [2021-11-19 13:31:32,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:32,980 INFO L225 Difference]: With dead ends: 2848 [2021-11-19 13:31:32,980 INFO L226 Difference]: Without dead ends: 2685 [2021-11-19 13:31:32,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:31:32,983 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 5973 mSDsluCounter, 4654 mSDsCounter, 0 mSdLazyCounter, 4431 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5973 SdHoareTripleChecker+Valid, 5562 SdHoareTripleChecker+Invalid, 4528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 4431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:32,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5973 Valid, 5562 Invalid, 4528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 4431 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-19 13:31:32,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-11-19 13:31:33,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1617. [2021-11-19 13:31:33,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3658690176322419) internal successors, (2169), 1616 states have internal predecessors, (2169), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:33,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2169 transitions. [2021-11-19 13:31:33,144 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2169 transitions. Word has length 111 [2021-11-19 13:31:33,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:33,145 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2169 transitions. [2021-11-19 13:31:33,145 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:33,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2169 transitions. [2021-11-19 13:31:33,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:31:33,149 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:33,149 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:33,149 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 13:31:33,150 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:33,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:33,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1875669866, now seen corresponding path program 1 times [2021-11-19 13:31:33,151 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:33,151 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898310046] [2021-11-19 13:31:33,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:33,151 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:33,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:33,381 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:33,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898310046] [2021-11-19 13:31:33,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898310046] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:33,382 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:33,382 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:31:33,382 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863495049] [2021-11-19 13:31:33,383 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:33,383 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:31:33,383 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:31:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:31:33,384 INFO L87 Difference]: Start difference. First operand 1617 states and 2169 transitions. Second operand has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:35,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:35,483 INFO L93 Difference]: Finished difference Result 2846 states and 3791 transitions. [2021-11-19 13:31:35,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:31:35,484 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 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 111 [2021-11-19 13:31:35,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:35,489 INFO L225 Difference]: With dead ends: 2846 [2021-11-19 13:31:35,489 INFO L226 Difference]: Without dead ends: 2685 [2021-11-19 13:31:35,491 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=94, Invalid=248, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:31:35,491 INFO L933 BasicCegarLoop]: 919 mSDtfsCounter, 6444 mSDsluCounter, 3827 mSDsCounter, 0 mSdLazyCounter, 3790 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6444 SdHoareTripleChecker+Valid, 4737 SdHoareTripleChecker+Invalid, 3906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:35,492 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6444 Valid, 4737 Invalid, 3906 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3790 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:31:35,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2685 states. [2021-11-19 13:31:35,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2685 to 1617. [2021-11-19 13:31:35,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.364609571788413) internal successors, (2167), 1616 states have internal predecessors, (2167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:35,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2167 transitions. [2021-11-19 13:31:35,660 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2167 transitions. Word has length 111 [2021-11-19 13:31:35,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:35,661 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2167 transitions. [2021-11-19 13:31:35,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 11.1) internal successors, (111), 9 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:35,661 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2167 transitions. [2021-11-19 13:31:35,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 13:31:35,665 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:35,665 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:35,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 13:31:35,666 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:35,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:35,666 INFO L85 PathProgramCache]: Analyzing trace with hash -1513726294, now seen corresponding path program 1 times [2021-11-19 13:31:35,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:35,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949518714] [2021-11-19 13:31:35,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:35,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:35,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:35,864 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:35,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949518714] [2021-11-19 13:31:35,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949518714] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:35,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:35,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:31:35,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195541535] [2021-11-19 13:31:35,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:35,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:31:35,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:35,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:31:35,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:31:35,867 INFO L87 Difference]: Start difference. First operand 1617 states and 2167 transitions. Second operand has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:37,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:37,462 INFO L93 Difference]: Finished difference Result 2746 states and 3532 transitions. [2021-11-19 13:31:37,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:31:37,463 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 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 111 [2021-11-19 13:31:37,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:37,467 INFO L225 Difference]: With dead ends: 2746 [2021-11-19 13:31:37,467 INFO L226 Difference]: Without dead ends: 2082 [2021-11-19 13:31:37,469 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:31:37,470 INFO L933 BasicCegarLoop]: 757 mSDtfsCounter, 5636 mSDsluCounter, 1573 mSDsCounter, 0 mSdLazyCounter, 2115 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5636 SdHoareTripleChecker+Valid, 2325 SdHoareTripleChecker+Invalid, 2185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 2115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:37,470 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5636 Valid, 2325 Invalid, 2185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 2115 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 13:31:37,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2082 states. [2021-11-19 13:31:37,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2082 to 1617. [2021-11-19 13:31:37,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3639798488664987) internal successors, (2166), 1616 states have internal predecessors, (2166), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2166 transitions. [2021-11-19 13:31:37,611 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2166 transitions. Word has length 111 [2021-11-19 13:31:37,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:37,611 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2166 transitions. [2021-11-19 13:31:37,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.857142857142858) internal successors, (111), 6 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:37,612 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2166 transitions. [2021-11-19 13:31:37,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:31:37,616 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:37,616 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:37,616 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 13:31:37,616 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:37,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:37,617 INFO L85 PathProgramCache]: Analyzing trace with hash -112789968, now seen corresponding path program 1 times [2021-11-19 13:31:37,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:37,617 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1261016094] [2021-11-19 13:31:37,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:37,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:37,814 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:37,814 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:37,814 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1261016094] [2021-11-19 13:31:37,814 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1261016094] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:37,814 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:37,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:37,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323223714] [2021-11-19 13:31:37,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:37,815 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:37,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:37,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:37,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:37,816 INFO L87 Difference]: Start difference. First operand 1617 states and 2166 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:39,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:39,865 INFO L93 Difference]: Finished difference Result 2822 states and 3756 transitions. [2021-11-19 13:31:39,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:39,873 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 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 112 [2021-11-19 13:31:39,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:39,877 INFO L225 Difference]: With dead ends: 2822 [2021-11-19 13:31:39,877 INFO L226 Difference]: Without dead ends: 2693 [2021-11-19 13:31:39,879 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:31:39,880 INFO L933 BasicCegarLoop]: 871 mSDtfsCounter, 3989 mSDsluCounter, 2943 mSDsCounter, 0 mSdLazyCounter, 2989 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3989 SdHoareTripleChecker+Valid, 3809 SdHoareTripleChecker+Invalid, 3055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:39,880 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3989 Valid, 3809 Invalid, 3055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2989 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:31:39,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-19 13:31:40,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1617. [2021-11-19 13:31:40,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3633501259445844) internal successors, (2165), 1616 states have internal predecessors, (2165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:40,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2165 transitions. [2021-11-19 13:31:40,049 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2165 transitions. Word has length 112 [2021-11-19 13:31:40,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:40,050 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2165 transitions. [2021-11-19 13:31:40,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:40,050 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2165 transitions. [2021-11-19 13:31:40,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:31:40,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:40,054 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:40,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 13:31:40,055 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:40,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:40,055 INFO L85 PathProgramCache]: Analyzing trace with hash 362774875, now seen corresponding path program 1 times [2021-11-19 13:31:40,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:40,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1520296201] [2021-11-19 13:31:40,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:40,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:40,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:40,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:40,246 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:40,247 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1520296201] [2021-11-19 13:31:40,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1520296201] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:40,247 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:40,247 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:40,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463832617] [2021-11-19 13:31:40,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:40,248 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:40,248 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:40,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:40,249 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:40,249 INFO L87 Difference]: Start difference. First operand 1617 states and 2165 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:42,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:42,367 INFO L93 Difference]: Finished difference Result 2760 states and 3654 transitions. [2021-11-19 13:31:42,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:42,368 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 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 112 [2021-11-19 13:31:42,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:42,372 INFO L225 Difference]: With dead ends: 2760 [2021-11-19 13:31:42,372 INFO L226 Difference]: Without dead ends: 2645 [2021-11-19 13:31:42,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:31:42,375 INFO L933 BasicCegarLoop]: 927 mSDtfsCounter, 5710 mSDsluCounter, 3020 mSDsCounter, 0 mSdLazyCounter, 3182 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5710 SdHoareTripleChecker+Valid, 3940 SdHoareTripleChecker+Invalid, 3362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 3182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:42,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5710 Valid, 3940 Invalid, 3362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 3182 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:31:42,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2645 states. [2021-11-19 13:31:42,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2645 to 1617. [2021-11-19 13:31:42,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.36272040302267) internal successors, (2164), 1616 states have internal predecessors, (2164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:42,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2164 transitions. [2021-11-19 13:31:42,572 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2164 transitions. Word has length 112 [2021-11-19 13:31:42,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:42,573 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2164 transitions. [2021-11-19 13:31:42,573 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:42,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2164 transitions. [2021-11-19 13:31:42,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:31:42,577 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:42,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:42,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 13:31:42,578 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:42,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:42,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1942312309, now seen corresponding path program 1 times [2021-11-19 13:31:42,579 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:42,579 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1331976005] [2021-11-19 13:31:42,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:42,579 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:42,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:42,751 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:42,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1331976005] [2021-11-19 13:31:42,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1331976005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:42,754 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:42,754 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:42,754 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131571713] [2021-11-19 13:31:42,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:42,755 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:42,755 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:42,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:42,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:42,756 INFO L87 Difference]: Start difference. First operand 1617 states and 2164 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:44,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:44,832 INFO L93 Difference]: Finished difference Result 2875 states and 3835 transitions. [2021-11-19 13:31:44,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:44,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 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 112 [2021-11-19 13:31:44,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:44,840 INFO L225 Difference]: With dead ends: 2875 [2021-11-19 13:31:44,840 INFO L226 Difference]: Without dead ends: 2717 [2021-11-19 13:31:44,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:31:44,843 INFO L933 BasicCegarLoop]: 882 mSDtfsCounter, 6143 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 3002 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6143 SdHoareTripleChecker+Valid, 3817 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 3002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:44,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6143 Valid, 3817 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 3002 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:31:44,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2021-11-19 13:31:45,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1617. [2021-11-19 13:31:45,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3620906801007557) internal successors, (2163), 1616 states have internal predecessors, (2163), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:45,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2163 transitions. [2021-11-19 13:31:45,089 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2163 transitions. Word has length 112 [2021-11-19 13:31:45,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:45,089 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2163 transitions. [2021-11-19 13:31:45,090 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:45,090 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2163 transitions. [2021-11-19 13:31:45,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:31:45,094 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:45,094 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:45,095 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 13:31:45,095 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:45,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:45,096 INFO L85 PathProgramCache]: Analyzing trace with hash 949221365, now seen corresponding path program 1 times [2021-11-19 13:31:45,096 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:45,096 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537831238] [2021-11-19 13:31:45,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:45,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:45,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:45,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:45,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:45,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537831238] [2021-11-19 13:31:45,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537831238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:45,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:45,314 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:45,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035770084] [2021-11-19 13:31:45,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:45,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:45,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:45,319 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:45,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:45,319 INFO L87 Difference]: Start difference. First operand 1617 states and 2163 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:47,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:47,419 INFO L93 Difference]: Finished difference Result 2829 states and 3763 transitions. [2021-11-19 13:31:47,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:47,419 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 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 112 [2021-11-19 13:31:47,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:47,425 INFO L225 Difference]: With dead ends: 2829 [2021-11-19 13:31:47,425 INFO L226 Difference]: Without dead ends: 2693 [2021-11-19 13:31:47,427 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:31:47,428 INFO L933 BasicCegarLoop]: 913 mSDtfsCounter, 3919 mSDsluCounter, 3045 mSDsCounter, 0 mSdLazyCounter, 3113 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3919 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 3178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:47,428 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3919 Valid, 3953 Invalid, 3178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 3113 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:31:47,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-19 13:31:47,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1617. [2021-11-19 13:31:47,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3614609571788414) internal successors, (2162), 1616 states have internal predecessors, (2162), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:47,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2162 transitions. [2021-11-19 13:31:47,684 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2162 transitions. Word has length 112 [2021-11-19 13:31:47,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:47,684 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2162 transitions. [2021-11-19 13:31:47,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:47,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2162 transitions. [2021-11-19 13:31:47,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-11-19 13:31:47,689 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:47,690 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:47,690 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 13:31:47,690 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:47,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:47,691 INFO L85 PathProgramCache]: Analyzing trace with hash -639029042, now seen corresponding path program 1 times [2021-11-19 13:31:47,691 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:47,692 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557781726] [2021-11-19 13:31:47,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:47,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:47,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:47,892 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:47,892 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557781726] [2021-11-19 13:31:47,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557781726] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:47,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:47,893 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:47,893 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107622653] [2021-11-19 13:31:47,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:47,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:47,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:47,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:47,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:47,895 INFO L87 Difference]: Start difference. First operand 1617 states and 2162 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:50,069 INFO L93 Difference]: Finished difference Result 2944 states and 3934 transitions. [2021-11-19 13:31:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:31:50,069 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 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 112 [2021-11-19 13:31:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:50,073 INFO L225 Difference]: With dead ends: 2944 [2021-11-19 13:31:50,073 INFO L226 Difference]: Without dead ends: 2723 [2021-11-19 13:31:50,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:31:50,075 INFO L933 BasicCegarLoop]: 1204 mSDtfsCounter, 4805 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 3327 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4805 SdHoareTripleChecker+Valid, 4598 SdHoareTripleChecker+Invalid, 3351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 3327 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:50,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4805 Valid, 4598 Invalid, 3351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 3327 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:31:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2021-11-19 13:31:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 1617. [2021-11-19 13:31:50,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3608312342569269) internal successors, (2161), 1616 states have internal predecessors, (2161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:50,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2161 transitions. [2021-11-19 13:31:50,300 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2161 transitions. Word has length 112 [2021-11-19 13:31:50,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:50,300 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2161 transitions. [2021-11-19 13:31:50,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 7 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:50,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2161 transitions. [2021-11-19 13:31:50,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:31:50,303 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:50,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:50,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 13:31:50,304 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:50,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:50,305 INFO L85 PathProgramCache]: Analyzing trace with hash -289332849, now seen corresponding path program 1 times [2021-11-19 13:31:50,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:50,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756611836] [2021-11-19 13:31:50,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:50,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:50,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:50,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:50,501 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:50,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756611836] [2021-11-19 13:31:50,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756611836] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:50,502 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:50,502 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:50,502 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507689919] [2021-11-19 13:31:50,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:50,503 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:50,503 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:50,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:50,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:50,504 INFO L87 Difference]: Start difference. First operand 1617 states and 2161 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:52,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:52,693 INFO L93 Difference]: Finished difference Result 2563 states and 3346 transitions. [2021-11-19 13:31:52,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:52,693 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 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 113 [2021-11-19 13:31:52,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:52,698 INFO L225 Difference]: With dead ends: 2563 [2021-11-19 13:31:52,698 INFO L226 Difference]: Without dead ends: 2557 [2021-11-19 13:31:52,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:31:52,700 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 5881 mSDsluCounter, 2530 mSDsCounter, 0 mSdLazyCounter, 2887 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5881 SdHoareTripleChecker+Valid, 3346 SdHoareTripleChecker+Invalid, 3249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:52,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5881 Valid, 3346 Invalid, 3249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2887 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:31:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2021-11-19 13:31:52,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 1617. [2021-11-19 13:31:52,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3595717884130982) internal successors, (2159), 1616 states have internal predecessors, (2159), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:52,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2159 transitions. [2021-11-19 13:31:52,974 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2159 transitions. Word has length 113 [2021-11-19 13:31:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:52,974 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2159 transitions. [2021-11-19 13:31:52,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2159 transitions. [2021-11-19 13:31:52,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:31:52,977 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:52,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:52,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 13:31:52,977 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:52,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:52,978 INFO L85 PathProgramCache]: Analyzing trace with hash 415339855, now seen corresponding path program 1 times [2021-11-19 13:31:52,978 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:52,978 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773288573] [2021-11-19 13:31:52,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:52,978 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:53,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:53,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:53,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:53,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773288573] [2021-11-19 13:31:53,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773288573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:53,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:53,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:53,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [943662723] [2021-11-19 13:31:53,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:53,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:53,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:53,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:53,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:53,162 INFO L87 Difference]: Start difference. First operand 1617 states and 2159 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:54,770 INFO L93 Difference]: Finished difference Result 2383 states and 3181 transitions. [2021-11-19 13:31:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:31:54,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 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 113 [2021-11-19 13:31:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:54,773 INFO L225 Difference]: With dead ends: 2383 [2021-11-19 13:31:54,773 INFO L226 Difference]: Without dead ends: 1737 [2021-11-19 13:31:54,774 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2021-11-19 13:31:54,774 INFO L933 BasicCegarLoop]: 887 mSDtfsCounter, 3078 mSDsluCounter, 2591 mSDsCounter, 0 mSdLazyCounter, 2744 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3078 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:54,775 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3078 Valid, 3472 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2744 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 13:31:54,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1737 states. [2021-11-19 13:31:55,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1737 to 1617. [2021-11-19 13:31:55,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3583123425692696) internal successors, (2157), 1616 states have internal predecessors, (2157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:55,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2157 transitions. [2021-11-19 13:31:55,030 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2157 transitions. Word has length 113 [2021-11-19 13:31:55,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:55,031 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2157 transitions. [2021-11-19 13:31:55,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:55,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2157 transitions. [2021-11-19 13:31:55,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:31:55,034 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:55,034 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:55,035 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 13:31:55,035 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:55,035 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:55,035 INFO L85 PathProgramCache]: Analyzing trace with hash 137094735, now seen corresponding path program 1 times [2021-11-19 13:31:55,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:55,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860185149] [2021-11-19 13:31:55,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:55,036 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:55,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:55,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:55,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:55,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860185149] [2021-11-19 13:31:55,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860185149] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:55,283 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:55,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:55,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [521684736] [2021-11-19 13:31:55,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:55,284 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:55,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:55,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:55,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:55,285 INFO L87 Difference]: Start difference. First operand 1617 states and 2157 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:57,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:31:57,335 INFO L93 Difference]: Finished difference Result 2834 states and 3760 transitions. [2021-11-19 13:31:57,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:31:57,336 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 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 113 [2021-11-19 13:31:57,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:31:57,339 INFO L225 Difference]: With dead ends: 2834 [2021-11-19 13:31:57,339 INFO L226 Difference]: Without dead ends: 2693 [2021-11-19 13:31:57,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:31:57,341 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 3774 mSDsluCounter, 3130 mSDsCounter, 0 mSdLazyCounter, 3243 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3774 SdHoareTripleChecker+Valid, 4076 SdHoareTripleChecker+Invalid, 3306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 3243 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:31:57,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3774 Valid, 4076 Invalid, 3306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 3243 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 13:31:57,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-19 13:31:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1617. [2021-11-19 13:31:57,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3576826196473553) internal successors, (2156), 1616 states have internal predecessors, (2156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:57,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2156 transitions. [2021-11-19 13:31:57,584 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2156 transitions. Word has length 113 [2021-11-19 13:31:57,584 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:31:57,585 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2156 transitions. [2021-11-19 13:31:57,585 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:31:57,585 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2156 transitions. [2021-11-19 13:31:57,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:31:57,587 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:31:57,587 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:31:57,587 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 13:31:57,587 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr20ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:31:57,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:31:57,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1768415631, now seen corresponding path program 1 times [2021-11-19 13:31:57,588 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:31:57,588 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502710263] [2021-11-19 13:31:57,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:31:57,588 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:31:57,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:31:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:31:57,773 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:31:57,773 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502710263] [2021-11-19 13:31:57,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502710263] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:31:57,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:31:57,774 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:31:57,774 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163443614] [2021-11-19 13:31:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:31:57,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:31:57,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:31:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:31:57,776 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:31:57,776 INFO L87 Difference]: Start difference. First operand 1617 states and 2156 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:00,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:00,018 INFO L93 Difference]: Finished difference Result 2675 states and 3488 transitions. [2021-11-19 13:32:00,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:00,020 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 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 113 [2021-11-19 13:32:00,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:00,023 INFO L225 Difference]: With dead ends: 2675 [2021-11-19 13:32:00,023 INFO L226 Difference]: Without dead ends: 2557 [2021-11-19 13:32:00,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:00,024 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 5869 mSDsluCounter, 2529 mSDsCounter, 0 mSdLazyCounter, 2879 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5869 SdHoareTripleChecker+Valid, 3345 SdHoareTripleChecker+Invalid, 3241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 2879 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:00,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5869 Valid, 3345 Invalid, 3241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [362 Valid, 2879 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:32:00,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2557 states. [2021-11-19 13:32:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2557 to 1617. [2021-11-19 13:32:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3570528967254407) internal successors, (2155), 1616 states have internal predecessors, (2155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:00,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2155 transitions. [2021-11-19 13:32:00,222 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2155 transitions. Word has length 113 [2021-11-19 13:32:00,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:00,222 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2155 transitions. [2021-11-19 13:32:00,222 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:00,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2155 transitions. [2021-11-19 13:32:00,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:32:00,224 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:00,224 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:00,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 13:32:00,225 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:00,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:00,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1519420945, now seen corresponding path program 1 times [2021-11-19 13:32:00,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:00,225 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676400121] [2021-11-19 13:32:00,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:00,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:00,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:00,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:00,393 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:00,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676400121] [2021-11-19 13:32:00,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676400121] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:00,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:00,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:00,394 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92842281] [2021-11-19 13:32:00,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:00,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:00,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:00,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:00,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:00,395 INFO L87 Difference]: Start difference. First operand 1617 states and 2155 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:02,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:02,489 INFO L93 Difference]: Finished difference Result 2843 states and 3765 transitions. [2021-11-19 13:32:02,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:02,489 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 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 113 [2021-11-19 13:32:02,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:02,492 INFO L225 Difference]: With dead ends: 2843 [2021-11-19 13:32:02,493 INFO L226 Difference]: Without dead ends: 2693 [2021-11-19 13:32:02,494 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:02,494 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 5857 mSDsluCounter, 3110 mSDsCounter, 0 mSdLazyCounter, 3232 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5857 SdHoareTripleChecker+Valid, 4056 SdHoareTripleChecker+Invalid, 3328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 3232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:02,495 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5857 Valid, 4056 Invalid, 3328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 3232 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-19 13:32:02,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-19 13:32:02,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1617. [2021-11-19 13:32:02,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3564231738035264) internal successors, (2154), 1616 states have internal predecessors, (2154), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:02,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2154 transitions. [2021-11-19 13:32:02,736 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2154 transitions. Word has length 113 [2021-11-19 13:32:02,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:02,736 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2154 transitions. [2021-11-19 13:32:02,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:02,736 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2154 transitions. [2021-11-19 13:32:02,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 13:32:02,738 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:02,738 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:02,739 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 13:32:02,739 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:02,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:02,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1339566735, now seen corresponding path program 1 times [2021-11-19 13:32:02,740 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:02,740 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458303950] [2021-11-19 13:32:02,740 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:02,740 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:02,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:02,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:02,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458303950] [2021-11-19 13:32:02,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458303950] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:02,906 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:02,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:02,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1754759002] [2021-11-19 13:32:02,907 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:02,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:02,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:02,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:02,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:02,908 INFO L87 Difference]: Start difference. First operand 1617 states and 2154 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:05,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:05,100 INFO L93 Difference]: Finished difference Result 2881 states and 3825 transitions. [2021-11-19 13:32:05,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:05,101 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 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 113 [2021-11-19 13:32:05,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:05,103 INFO L225 Difference]: With dead ends: 2881 [2021-11-19 13:32:05,104 INFO L226 Difference]: Without dead ends: 2717 [2021-11-19 13:32:05,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:05,105 INFO L933 BasicCegarLoop]: 971 mSDtfsCounter, 3785 mSDsluCounter, 3190 mSDsCounter, 0 mSdLazyCounter, 3255 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3785 SdHoareTripleChecker+Valid, 4154 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 3255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:05,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3785 Valid, 4154 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 3255 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:32:05,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2717 states. [2021-11-19 13:32:05,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2717 to 1617. [2021-11-19 13:32:05,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.355793450881612) internal successors, (2153), 1616 states have internal predecessors, (2153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:05,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2153 transitions. [2021-11-19 13:32:05,342 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2153 transitions. Word has length 113 [2021-11-19 13:32:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:05,343 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2153 transitions. [2021-11-19 13:32:05,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:05,343 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2153 transitions. [2021-11-19 13:32:05,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 13:32:05,346 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:05,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:05,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 13:32:05,347 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:05,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:05,348 INFO L85 PathProgramCache]: Analyzing trace with hash 880027216, now seen corresponding path program 1 times [2021-11-19 13:32:05,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:05,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330781748] [2021-11-19 13:32:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:05,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:05,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:05,512 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:05,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:05,513 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330781748] [2021-11-19 13:32:05,513 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330781748] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:05,513 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:05,513 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:05,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776827420] [2021-11-19 13:32:05,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:05,514 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:05,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:05,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:05,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:05,515 INFO L87 Difference]: Start difference. First operand 1617 states and 2153 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:07,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:07,974 INFO L93 Difference]: Finished difference Result 2853 states and 3782 transitions. [2021-11-19 13:32:07,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:07,975 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 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 114 [2021-11-19 13:32:07,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:07,978 INFO L225 Difference]: With dead ends: 2853 [2021-11-19 13:32:07,978 INFO L226 Difference]: Without dead ends: 2693 [2021-11-19 13:32:07,980 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:07,981 INFO L933 BasicCegarLoop]: 953 mSDtfsCounter, 5813 mSDsluCounter, 3164 mSDsCounter, 0 mSdLazyCounter, 3194 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5813 SdHoareTripleChecker+Valid, 4112 SdHoareTripleChecker+Invalid, 3291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 3194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:07,981 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5813 Valid, 4112 Invalid, 3291 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 3194 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:32:07,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2693 states. [2021-11-19 13:32:08,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2693 to 1617. [2021-11-19 13:32:08,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1617 states, 1588 states have (on average 1.3545340050377834) internal successors, (2151), 1616 states have internal predecessors, (2151), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:08,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1617 states to 1617 states and 2151 transitions. [2021-11-19 13:32:08,311 INFO L78 Accepts]: Start accepts. Automaton has 1617 states and 2151 transitions. Word has length 114 [2021-11-19 13:32:08,312 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:08,312 INFO L470 AbstractCegarLoop]: Abstraction has 1617 states and 2151 transitions. [2021-11-19 13:32:08,312 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:08,312 INFO L276 IsEmpty]: Start isEmpty. Operand 1617 states and 2151 transitions. [2021-11-19 13:32:08,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 13:32:08,314 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:08,314 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:08,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 13:32:08,314 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:08,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:08,315 INFO L85 PathProgramCache]: Analyzing trace with hash -1160312895, now seen corresponding path program 1 times [2021-11-19 13:32:08,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:08,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821403531] [2021-11-19 13:32:08,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:08,316 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:08,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:08,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:08,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:08,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821403531] [2021-11-19 13:32:08,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821403531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:08,802 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:08,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:32:08,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696527038] [2021-11-19 13:32:08,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:08,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:32:08,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:08,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:32:08,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:32:08,804 INFO L87 Difference]: Start difference. First operand 1617 states and 2151 transitions. Second operand has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:10,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:10,346 INFO L93 Difference]: Finished difference Result 2491 states and 3317 transitions. [2021-11-19 13:32:10,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:32:10,347 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 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 114 [2021-11-19 13:32:10,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:10,351 INFO L225 Difference]: With dead ends: 2491 [2021-11-19 13:32:10,351 INFO L226 Difference]: Without dead ends: 1933 [2021-11-19 13:32:10,353 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=90, Invalid=290, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:10,354 INFO L933 BasicCegarLoop]: 1623 mSDtfsCounter, 3499 mSDsluCounter, 8542 mSDsCounter, 0 mSdLazyCounter, 766 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3499 SdHoareTripleChecker+Valid, 9983 SdHoareTripleChecker+Invalid, 779 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:10,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3499 Valid, 9983 Invalid, 779 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 766 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:32:10,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1933 states. [2021-11-19 13:32:10,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1933 to 1171. [2021-11-19 13:32:10,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1148 states have (on average 1.343205574912892) internal successors, (1542), 1170 states have internal predecessors, (1542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:10,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1542 transitions. [2021-11-19 13:32:10,621 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1542 transitions. Word has length 114 [2021-11-19 13:32:10,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:10,622 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1542 transitions. [2021-11-19 13:32:10,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.5) internal successors, (114), 11 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:10,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1542 transitions. [2021-11-19 13:32:10,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 13:32:10,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:10,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:10,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 13:32:10,624 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:10,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:10,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1410743600, now seen corresponding path program 1 times [2021-11-19 13:32:10,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:10,625 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305999329] [2021-11-19 13:32:10,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:10,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:10,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:10,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:10,793 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:10,793 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305999329] [2021-11-19 13:32:10,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305999329] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:10,793 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:10,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:10,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453120994] [2021-11-19 13:32:10,794 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:10,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:10,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:10,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:10,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:10,795 INFO L87 Difference]: Start difference. First operand 1171 states and 1542 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:13,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:13,160 INFO L93 Difference]: Finished difference Result 2518 states and 3329 transitions. [2021-11-19 13:32:13,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:13,161 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 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 114 [2021-11-19 13:32:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:13,163 INFO L225 Difference]: With dead ends: 2518 [2021-11-19 13:32:13,163 INFO L226 Difference]: Without dead ends: 2277 [2021-11-19 13:32:13,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:32:13,164 INFO L933 BasicCegarLoop]: 1274 mSDtfsCounter, 2654 mSDsluCounter, 4223 mSDsCounter, 0 mSdLazyCounter, 3781 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 5487 SdHoareTripleChecker+Invalid, 3796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 3781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:13,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2654 Valid, 5487 Invalid, 3796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 3781 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:32:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2277 states. [2021-11-19 13:32:13,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2277 to 1171. [2021-11-19 13:32:13,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1148 states have (on average 1.3423344947735192) internal successors, (1541), 1170 states have internal predecessors, (1541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:13,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1541 transitions. [2021-11-19 13:32:13,366 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1541 transitions. Word has length 114 [2021-11-19 13:32:13,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:13,366 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1541 transitions. [2021-11-19 13:32:13,367 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:13,367 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1541 transitions. [2021-11-19 13:32:13,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 13:32:13,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:13,368 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:13,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 13:32:13,369 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:13,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:13,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1942041841, now seen corresponding path program 1 times [2021-11-19 13:32:13,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:13,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295375572] [2021-11-19 13:32:13,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:13,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:13,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:13,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:13,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295375572] [2021-11-19 13:32:13,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295375572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:13,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:13,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:13,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321438038] [2021-11-19 13:32:13,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:13,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:13,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:13,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:13,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:13,557 INFO L87 Difference]: Start difference. First operand 1171 states and 1541 transitions. Second operand has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:15,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:15,820 INFO L93 Difference]: Finished difference Result 2154 states and 2833 transitions. [2021-11-19 13:32:15,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:15,820 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 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 114 [2021-11-19 13:32:15,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:15,822 INFO L225 Difference]: With dead ends: 2154 [2021-11-19 13:32:15,822 INFO L226 Difference]: Without dead ends: 2024 [2021-11-19 13:32:15,823 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:32:15,824 INFO L933 BasicCegarLoop]: 784 mSDtfsCounter, 3765 mSDsluCounter, 3162 mSDsCounter, 0 mSdLazyCounter, 2893 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3765 SdHoareTripleChecker+Valid, 3937 SdHoareTripleChecker+Invalid, 2946 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 2893 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:15,824 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3765 Valid, 3937 Invalid, 2946 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 2893 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-11-19 13:32:15,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2024 states. [2021-11-19 13:32:16,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2024 to 1171. [2021-11-19 13:32:16,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1171 states, 1148 states have (on average 1.3414634146341464) internal successors, (1540), 1170 states have internal predecessors, (1540), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1540 transitions. [2021-11-19 13:32:16,007 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1540 transitions. Word has length 114 [2021-11-19 13:32:16,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:16,008 INFO L470 AbstractCegarLoop]: Abstraction has 1171 states and 1540 transitions. [2021-11-19 13:32:16,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.25) internal successors, (114), 7 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1540 transitions. [2021-11-19 13:32:16,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-11-19 13:32:16,010 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:16,010 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:16,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 13:32:16,010 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:16,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:16,010 INFO L85 PathProgramCache]: Analyzing trace with hash 87169319, now seen corresponding path program 1 times [2021-11-19 13:32:16,010 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:16,011 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809430193] [2021-11-19 13:32:16,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:16,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:16,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:16,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:16,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:16,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809430193] [2021-11-19 13:32:16,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809430193] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:16,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:16,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-19 13:32:16,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [607211455] [2021-11-19 13:32:16,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:16,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-11-19 13:32:16,551 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:16,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-11-19 13:32:16,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:32:16,552 INFO L87 Difference]: Start difference. First operand 1171 states and 1540 transitions. Second operand has 15 states, 15 states have (on average 7.6) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:18,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:18,218 INFO L93 Difference]: Finished difference Result 1739 states and 2267 transitions. [2021-11-19 13:32:18,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-19 13:32:18,219 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 14 states have internal predecessors, (114), 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 114 [2021-11-19 13:32:18,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:18,220 INFO L225 Difference]: With dead ends: 1739 [2021-11-19 13:32:18,220 INFO L226 Difference]: Without dead ends: 1206 [2021-11-19 13:32:18,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=477, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:32:18,222 INFO L933 BasicCegarLoop]: 897 mSDtfsCounter, 2917 mSDsluCounter, 6541 mSDsCounter, 0 mSdLazyCounter, 1386 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2917 SdHoareTripleChecker+Valid, 7322 SdHoareTripleChecker+Invalid, 1424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:18,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2917 Valid, 7322 Invalid, 1424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1386 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:32:18,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1206 states. [2021-11-19 13:32:18,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1206 to 976. [2021-11-19 13:32:18,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 954 states have (on average 1.3333333333333333) internal successors, (1272), 975 states have internal predecessors, (1272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:18,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1272 transitions. [2021-11-19 13:32:18,382 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1272 transitions. Word has length 114 [2021-11-19 13:32:18,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:18,382 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1272 transitions. [2021-11-19 13:32:18,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 7.6) internal successors, (114), 14 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:18,383 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1272 transitions. [2021-11-19 13:32:18,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 13:32:18,384 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:18,384 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:18,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 13:32:18,384 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:18,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:18,385 INFO L85 PathProgramCache]: Analyzing trace with hash 929486772, now seen corresponding path program 1 times [2021-11-19 13:32:18,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:18,385 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958295138] [2021-11-19 13:32:18,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:18,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:18,571 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:18,571 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:18,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958295138] [2021-11-19 13:32:18,572 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958295138] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:18,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:18,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:18,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058310543] [2021-11-19 13:32:18,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:18,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:18,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:18,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:18,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:18,574 INFO L87 Difference]: Start difference. First operand 976 states and 1272 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:20,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:20,014 INFO L93 Difference]: Finished difference Result 1773 states and 2283 transitions. [2021-11-19 13:32:20,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:20,014 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 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 115 [2021-11-19 13:32:20,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:20,016 INFO L225 Difference]: With dead ends: 1773 [2021-11-19 13:32:20,016 INFO L226 Difference]: Without dead ends: 1651 [2021-11-19 13:32:20,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:20,018 INFO L933 BasicCegarLoop]: 530 mSDtfsCounter, 2375 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2375 SdHoareTripleChecker+Valid, 2145 SdHoareTripleChecker+Invalid, 1811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:20,018 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2375 Valid, 2145 Invalid, 1811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:32:20,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1651 states. [2021-11-19 13:32:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1651 to 976. [2021-11-19 13:32:20,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 954 states have (on average 1.3312368972746331) internal successors, (1270), 975 states have internal predecessors, (1270), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:20,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1270 transitions. [2021-11-19 13:32:20,186 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1270 transitions. Word has length 115 [2021-11-19 13:32:20,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:20,187 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1270 transitions. [2021-11-19 13:32:20,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:20,187 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1270 transitions. [2021-11-19 13:32:20,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 13:32:20,189 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:20,189 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:20,190 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 13:32:20,190 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:20,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:20,191 INFO L85 PathProgramCache]: Analyzing trace with hash 107578612, now seen corresponding path program 1 times [2021-11-19 13:32:20,191 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:20,191 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404632917] [2021-11-19 13:32:20,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:20,191 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:20,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:20,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:20,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:20,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404632917] [2021-11-19 13:32:20,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404632917] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:20,378 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:20,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:20,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1991433238] [2021-11-19 13:32:20,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:20,379 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:20,379 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:20,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:20,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:20,380 INFO L87 Difference]: Start difference. First operand 976 states and 1270 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:22,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:22,256 INFO L93 Difference]: Finished difference Result 2251 states and 2962 transitions. [2021-11-19 13:32:22,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:22,256 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 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 115 [2021-11-19 13:32:22,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:22,258 INFO L225 Difference]: With dead ends: 2251 [2021-11-19 13:32:22,258 INFO L226 Difference]: Without dead ends: 1856 [2021-11-19 13:32:22,259 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:32:22,259 INFO L933 BasicCegarLoop]: 810 mSDtfsCounter, 2248 mSDsluCounter, 2359 mSDsCounter, 0 mSdLazyCounter, 2297 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2248 SdHoareTripleChecker+Valid, 3160 SdHoareTripleChecker+Invalid, 2310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 2297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:22,260 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2248 Valid, 3160 Invalid, 2310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 2297 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-19 13:32:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-11-19 13:32:22,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 976. [2021-11-19 13:32:22,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 954 states have (on average 1.329140461215933) internal successors, (1268), 975 states have internal predecessors, (1268), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:22,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1268 transitions. [2021-11-19 13:32:22,466 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1268 transitions. Word has length 115 [2021-11-19 13:32:22,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:22,466 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1268 transitions. [2021-11-19 13:32:22,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:22,467 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1268 transitions. [2021-11-19 13:32:22,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 13:32:22,469 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:22,469 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:22,469 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 13:32:22,469 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:22,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:22,470 INFO L85 PathProgramCache]: Analyzing trace with hash 959634164, now seen corresponding path program 1 times [2021-11-19 13:32:22,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:22,470 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1382959120] [2021-11-19 13:32:22,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:22,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:22,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:22,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:22,650 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:22,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1382959120] [2021-11-19 13:32:22,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1382959120] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:22,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:22,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:22,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654331375] [2021-11-19 13:32:22,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:22,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:22,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:22,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:22,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:22,652 INFO L87 Difference]: Start difference. First operand 976 states and 1268 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:24,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:24,389 INFO L93 Difference]: Finished difference Result 1891 states and 2466 transitions. [2021-11-19 13:32:24,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:24,389 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 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 115 [2021-11-19 13:32:24,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:24,392 INFO L225 Difference]: With dead ends: 1891 [2021-11-19 13:32:24,392 INFO L226 Difference]: Without dead ends: 1723 [2021-11-19 13:32:24,393 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:24,394 INFO L933 BasicCegarLoop]: 598 mSDtfsCounter, 3433 mSDsluCounter, 1912 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3433 SdHoareTripleChecker+Valid, 2503 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:24,394 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3433 Valid, 2503 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:32:24,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1723 states. [2021-11-19 13:32:24,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1723 to 976. [2021-11-19 13:32:24,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 954 states have (on average 1.3270440251572326) internal successors, (1266), 975 states have internal predecessors, (1266), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:24,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1266 transitions. [2021-11-19 13:32:24,605 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1266 transitions. Word has length 115 [2021-11-19 13:32:24,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:24,605 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1266 transitions. [2021-11-19 13:32:24,606 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:24,606 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1266 transitions. [2021-11-19 13:32:24,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 13:32:24,607 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:24,607 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:24,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 13:32:24,608 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:24,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:24,608 INFO L85 PathProgramCache]: Analyzing trace with hash 179689140, now seen corresponding path program 1 times [2021-11-19 13:32:24,608 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:24,608 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174233882] [2021-11-19 13:32:24,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:24,608 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:24,787 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:24,788 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:24,788 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174233882] [2021-11-19 13:32:24,788 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174233882] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:24,788 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:24,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:24,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091956074] [2021-11-19 13:32:24,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:24,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:24,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:24,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:24,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:24,791 INFO L87 Difference]: Start difference. First operand 976 states and 1266 transitions. Second operand has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:26,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:26,559 INFO L93 Difference]: Finished difference Result 1976 states and 2582 transitions. [2021-11-19 13:32:26,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:26,560 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 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 115 [2021-11-19 13:32:26,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:26,562 INFO L225 Difference]: With dead ends: 1976 [2021-11-19 13:32:26,562 INFO L226 Difference]: Without dead ends: 1735 [2021-11-19 13:32:26,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:26,564 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 2930 mSDsluCounter, 2463 mSDsCounter, 0 mSdLazyCounter, 2315 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2930 SdHoareTripleChecker+Valid, 3255 SdHoareTripleChecker+Invalid, 2345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 2315 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:26,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2930 Valid, 3255 Invalid, 2345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 2315 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:32:26,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1735 states. [2021-11-19 13:32:26,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1735 to 976. [2021-11-19 13:32:26,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 976 states, 954 states have (on average 1.3249475890985325) internal successors, (1264), 975 states have internal predecessors, (1264), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:26,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 976 states to 976 states and 1264 transitions. [2021-11-19 13:32:26,763 INFO L78 Accepts]: Start accepts. Automaton has 976 states and 1264 transitions. Word has length 115 [2021-11-19 13:32:26,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:26,763 INFO L470 AbstractCegarLoop]: Abstraction has 976 states and 1264 transitions. [2021-11-19 13:32:26,763 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.375) internal successors, (115), 7 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:26,764 INFO L276 IsEmpty]: Start isEmpty. Operand 976 states and 1264 transitions. [2021-11-19 13:32:26,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2021-11-19 13:32:26,765 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:26,766 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:26,766 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 13:32:26,766 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:26,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:26,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1104101316, now seen corresponding path program 1 times [2021-11-19 13:32:26,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:26,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1965011139] [2021-11-19 13:32:26,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:26,768 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:26,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:27,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:27,156 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1965011139] [2021-11-19 13:32:27,156 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1965011139] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:27,156 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:27,156 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:32:27,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352908255] [2021-11-19 13:32:27,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:27,157 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:32:27,157 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:27,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:32:27,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:32:27,158 INFO L87 Difference]: Start difference. First operand 976 states and 1264 transitions. Second operand has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:28,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:28,678 INFO L93 Difference]: Finished difference Result 2314 states and 3033 transitions. [2021-11-19 13:32:28,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:28,679 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 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 115 [2021-11-19 13:32:28,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:28,681 INFO L225 Difference]: With dead ends: 2314 [2021-11-19 13:32:28,681 INFO L226 Difference]: Without dead ends: 2113 [2021-11-19 13:32:28,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=117, Invalid=345, Unknown=0, NotChecked=0, Total=462 [2021-11-19 13:32:28,682 INFO L933 BasicCegarLoop]: 1501 mSDtfsCounter, 3409 mSDsluCounter, 5320 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3409 SdHoareTripleChecker+Valid, 6686 SdHoareTripleChecker+Invalid, 612 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:28,683 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3409 Valid, 6686 Invalid, 612 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:32:28,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2113 states. [2021-11-19 13:32:28,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2113 to 887. [2021-11-19 13:32:28,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 866 states have (on average 1.3198614318706698) internal successors, (1143), 886 states have internal predecessors, (1143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:28,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1143 transitions. [2021-11-19 13:32:28,937 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1143 transitions. Word has length 115 [2021-11-19 13:32:28,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:28,937 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1143 transitions. [2021-11-19 13:32:28,938 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.583333333333334) internal successors, (115), 11 states have internal predecessors, (115), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:28,938 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1143 transitions. [2021-11-19 13:32:28,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 13:32:28,939 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:28,939 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:28,939 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 13:32:28,940 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:28,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:28,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1513076373, now seen corresponding path program 1 times [2021-11-19 13:32:28,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:28,941 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533523908] [2021-11-19 13:32:28,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:28,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:28,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:29,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:29,109 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:29,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533523908] [2021-11-19 13:32:29,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533523908] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:29,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:29,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:29,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242607566] [2021-11-19 13:32:29,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:29,111 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:29,111 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:29,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:29,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:29,112 INFO L87 Difference]: Start difference. First operand 887 states and 1143 transitions. Second operand has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:30,455 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:30,455 INFO L93 Difference]: Finished difference Result 1693 states and 2190 transitions. [2021-11-19 13:32:30,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:30,455 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 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 116 [2021-11-19 13:32:30,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:30,457 INFO L225 Difference]: With dead ends: 1693 [2021-11-19 13:32:30,457 INFO L226 Difference]: Without dead ends: 1561 [2021-11-19 13:32:30,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:32:30,459 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 2596 mSDsluCounter, 1662 mSDsCounter, 0 mSdLazyCounter, 1460 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 2211 SdHoareTripleChecker+Invalid, 1513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 1460 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:30,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2596 Valid, 2211 Invalid, 1513 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 1460 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:32:30,460 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1561 states. [2021-11-19 13:32:30,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1561 to 887. [2021-11-19 13:32:30,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 887 states, 866 states have (on average 1.3175519630484989) internal successors, (1141), 886 states have internal predecessors, (1141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:30,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 887 states to 887 states and 1141 transitions. [2021-11-19 13:32:30,650 INFO L78 Accepts]: Start accepts. Automaton has 887 states and 1141 transitions. Word has length 116 [2021-11-19 13:32:30,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:30,650 INFO L470 AbstractCegarLoop]: Abstraction has 887 states and 1141 transitions. [2021-11-19 13:32:30,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.5) internal successors, (116), 7 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:30,651 INFO L276 IsEmpty]: Start isEmpty. Operand 887 states and 1141 transitions. [2021-11-19 13:32:30,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-19 13:32:30,652 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:30,652 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:30,652 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 13:32:30,653 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:30,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:30,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1287146171, now seen corresponding path program 1 times [2021-11-19 13:32:30,653 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:30,653 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381939533] [2021-11-19 13:32:30,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:30,653 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:30,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:31,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:31,024 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:31,024 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381939533] [2021-11-19 13:32:31,024 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381939533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:31,024 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:31,024 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:32:31,025 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936563184] [2021-11-19 13:32:31,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:31,025 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:32:31,025 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:31,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:32:31,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:32:31,026 INFO L87 Difference]: Start difference. First operand 887 states and 1141 transitions. Second operand has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:32,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:32,508 INFO L93 Difference]: Finished difference Result 1967 states and 2558 transitions. [2021-11-19 13:32:32,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:32,509 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 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 116 [2021-11-19 13:32:32,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:32,513 INFO L225 Difference]: With dead ends: 1967 [2021-11-19 13:32:32,514 INFO L226 Difference]: Without dead ends: 1823 [2021-11-19 13:32:32,515 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:32:32,515 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 3625 mSDsluCounter, 4177 mSDsCounter, 0 mSdLazyCounter, 665 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 5018 SdHoareTripleChecker+Invalid, 714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 665 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:32,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3625 Valid, 5018 Invalid, 714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 665 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:32:32,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1823 states. [2021-11-19 13:32:32,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1823 to 855. [2021-11-19 13:32:32,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.315347721822542) internal successors, (1097), 854 states have internal predecessors, (1097), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:32,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1097 transitions. [2021-11-19 13:32:32,724 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1097 transitions. Word has length 116 [2021-11-19 13:32:32,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:32,725 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1097 transitions. [2021-11-19 13:32:32,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.666666666666666) internal successors, (116), 11 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:32,725 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1097 transitions. [2021-11-19 13:32:32,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:32,727 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:32,727 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:32,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 13:32:32,728 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:32,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:32,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1810504601, now seen corresponding path program 1 times [2021-11-19 13:32:32,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:32,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2207826] [2021-11-19 13:32:32,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:32,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:32,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:32,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:32,888 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:32,889 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2207826] [2021-11-19 13:32:32,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2207826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:32,889 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:32,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:32,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983939187] [2021-11-19 13:32:32,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:32,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:32,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:32,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:32,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:32,892 INFO L87 Difference]: Start difference. First operand 855 states and 1097 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:34,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:34,666 INFO L93 Difference]: Finished difference Result 1870 states and 2424 transitions. [2021-11-19 13:32:34,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:34,667 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:34,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:34,668 INFO L225 Difference]: With dead ends: 1870 [2021-11-19 13:32:34,669 INFO L226 Difference]: Without dead ends: 1614 [2021-11-19 13:32:34,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:34,670 INFO L933 BasicCegarLoop]: 739 mSDtfsCounter, 1812 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 2821 SdHoareTripleChecker+Invalid, 1967 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:34,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1812 Valid, 2821 Invalid, 1967 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:32:34,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2021-11-19 13:32:34,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 855. [2021-11-19 13:32:34,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.3129496402877698) internal successors, (1095), 854 states have internal predecessors, (1095), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:34,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1095 transitions. [2021-11-19 13:32:34,895 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1095 transitions. Word has length 117 [2021-11-19 13:32:34,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:34,895 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1095 transitions. [2021-11-19 13:32:34,895 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:34,895 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1095 transitions. [2021-11-19 13:32:34,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:34,897 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:34,897 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:34,897 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 13:32:34,898 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:34,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:34,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1811786073, now seen corresponding path program 1 times [2021-11-19 13:32:34,898 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:34,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728832065] [2021-11-19 13:32:34,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:34,899 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:34,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:35,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:35,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:35,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728832065] [2021-11-19 13:32:35,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728832065] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:35,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:35,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:35,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599598650] [2021-11-19 13:32:35,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:35,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:35,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:35,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:35,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:35,056 INFO L87 Difference]: Start difference. First operand 855 states and 1095 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:36,492 INFO L93 Difference]: Finished difference Result 1724 states and 2229 transitions. [2021-11-19 13:32:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:36,494 INFO L225 Difference]: With dead ends: 1724 [2021-11-19 13:32:36,494 INFO L226 Difference]: Without dead ends: 1549 [2021-11-19 13:32:36,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:36,495 INFO L933 BasicCegarLoop]: 572 mSDtfsCounter, 1890 mSDsluCounter, 1819 mSDsCounter, 0 mSdLazyCounter, 1576 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 2384 SdHoareTripleChecker+Invalid, 1604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:36,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 2384 Invalid, 1604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1576 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:32:36,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2021-11-19 13:32:36,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 855. [2021-11-19 13:32:36,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.3105515587529977) internal successors, (1093), 854 states have internal predecessors, (1093), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:36,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1093 transitions. [2021-11-19 13:32:36,698 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1093 transitions. Word has length 117 [2021-11-19 13:32:36,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:36,698 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1093 transitions. [2021-11-19 13:32:36,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:36,699 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1093 transitions. [2021-11-19 13:32:36,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:36,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:36,700 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:36,700 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 13:32:36,700 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:36,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:36,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1153256871, now seen corresponding path program 1 times [2021-11-19 13:32:36,701 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:36,701 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347770603] [2021-11-19 13:32:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:36,701 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:36,845 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:36,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:36,846 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347770603] [2021-11-19 13:32:36,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347770603] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:36,846 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:36,846 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:36,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73915942] [2021-11-19 13:32:36,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:36,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:36,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:36,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:36,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:36,848 INFO L87 Difference]: Start difference. First operand 855 states and 1093 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:38,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:38,485 INFO L93 Difference]: Finished difference Result 1667 states and 2147 transitions. [2021-11-19 13:32:38,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:38,486 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:38,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:38,487 INFO L225 Difference]: With dead ends: 1667 [2021-11-19 13:32:38,487 INFO L226 Difference]: Without dead ends: 1529 [2021-11-19 13:32:38,488 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:32:38,489 INFO L933 BasicCegarLoop]: 576 mSDtfsCounter, 2612 mSDsluCounter, 1801 mSDsCounter, 0 mSdLazyCounter, 1671 mSolverCounterSat, 67 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 2370 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 67 IncrementalHoareTripleChecker+Valid, 1671 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:38,489 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2612 Valid, 2370 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [67 Valid, 1671 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:32:38,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-19 13:32:38,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 855. [2021-11-19 13:32:38,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.3081534772182255) internal successors, (1091), 854 states have internal predecessors, (1091), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:38,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1091 transitions. [2021-11-19 13:32:38,738 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1091 transitions. Word has length 117 [2021-11-19 13:32:38,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:38,739 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1091 transitions. [2021-11-19 13:32:38,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:38,739 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1091 transitions. [2021-11-19 13:32:38,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:38,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:38,742 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:38,742 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 13:32:38,742 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:38,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:38,743 INFO L85 PathProgramCache]: Analyzing trace with hash 1208891289, now seen corresponding path program 1 times [2021-11-19 13:32:38,743 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:38,743 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258016205] [2021-11-19 13:32:38,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:38,744 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:38,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:38,909 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:38,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258016205] [2021-11-19 13:32:38,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258016205] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:38,910 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:38,910 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:38,910 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321817016] [2021-11-19 13:32:38,910 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:38,911 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:38,911 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:38,911 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:38,911 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:38,912 INFO L87 Difference]: Start difference. First operand 855 states and 1091 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:40,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:40,440 INFO L93 Difference]: Finished difference Result 1724 states and 2225 transitions. [2021-11-19 13:32:40,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:40,441 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:40,441 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:40,442 INFO L225 Difference]: With dead ends: 1724 [2021-11-19 13:32:40,443 INFO L226 Difference]: Without dead ends: 1549 [2021-11-19 13:32:40,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:40,444 INFO L933 BasicCegarLoop]: 620 mSDtfsCounter, 1829 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 1682 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1829 SdHoareTripleChecker+Valid, 2425 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 1682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:40,444 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1829 Valid, 2425 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 1682 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:32:40,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1549 states. [2021-11-19 13:32:40,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1549 to 855. [2021-11-19 13:32:40,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.3057553956834533) internal successors, (1089), 854 states have internal predecessors, (1089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1089 transitions. [2021-11-19 13:32:40,656 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1089 transitions. Word has length 117 [2021-11-19 13:32:40,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:40,656 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1089 transitions. [2021-11-19 13:32:40,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:40,656 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1089 transitions. [2021-11-19 13:32:40,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:40,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:40,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:40,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 13:32:40,657 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:40,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:40,658 INFO L85 PathProgramCache]: Analyzing trace with hash -934243495, now seen corresponding path program 1 times [2021-11-19 13:32:40,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:40,658 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143350455] [2021-11-19 13:32:40,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:40,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:40,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:40,806 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:40,806 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143350455] [2021-11-19 13:32:40,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143350455] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:40,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:40,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:40,807 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725163978] [2021-11-19 13:32:40,807 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:40,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:40,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:40,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:40,808 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:40,809 INFO L87 Difference]: Start difference. First operand 855 states and 1089 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:42,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:42,724 INFO L93 Difference]: Finished difference Result 1667 states and 2143 transitions. [2021-11-19 13:32:42,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:42,725 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:42,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:42,726 INFO L225 Difference]: With dead ends: 1667 [2021-11-19 13:32:42,726 INFO L226 Difference]: Without dead ends: 1529 [2021-11-19 13:32:42,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:32:42,727 INFO L933 BasicCegarLoop]: 623 mSDtfsCounter, 2428 mSDsluCounter, 1939 mSDsCounter, 0 mSdLazyCounter, 1836 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2428 SdHoareTripleChecker+Valid, 2555 SdHoareTripleChecker+Invalid, 1898 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1836 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:42,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2428 Valid, 2555 Invalid, 1898 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1836 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:32:42,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-19 13:32:42,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 855. [2021-11-19 13:32:42,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.303357314148681) internal successors, (1087), 854 states have internal predecessors, (1087), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:42,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1087 transitions. [2021-11-19 13:32:42,948 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1087 transitions. Word has length 117 [2021-11-19 13:32:42,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:42,948 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1087 transitions. [2021-11-19 13:32:42,948 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:42,948 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1087 transitions. [2021-11-19 13:32:42,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:42,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:42,949 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:42,949 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-19 13:32:42,950 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:42,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:42,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1147282969, now seen corresponding path program 1 times [2021-11-19 13:32:42,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:42,950 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [100320529] [2021-11-19 13:32:42,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:42,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:43,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:43,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:43,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:43,117 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [100320529] [2021-11-19 13:32:43,117 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [100320529] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:43,117 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:43,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:43,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [273775674] [2021-11-19 13:32:43,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:43,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:43,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:43,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:43,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:43,120 INFO L87 Difference]: Start difference. First operand 855 states and 1087 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:44,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:44,918 INFO L93 Difference]: Finished difference Result 1667 states and 2141 transitions. [2021-11-19 13:32:44,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:44,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:44,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:44,924 INFO L225 Difference]: With dead ends: 1667 [2021-11-19 13:32:44,924 INFO L226 Difference]: Without dead ends: 1529 [2021-11-19 13:32:44,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:32:44,925 INFO L933 BasicCegarLoop]: 696 mSDtfsCounter, 1582 mSDsluCounter, 2329 mSDsCounter, 0 mSdLazyCounter, 2017 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1582 SdHoareTripleChecker+Valid, 3015 SdHoareTripleChecker+Invalid, 2052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 2017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:44,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1582 Valid, 3015 Invalid, 2052 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 2017 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:32:44,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-19 13:32:45,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 855. [2021-11-19 13:32:45,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.3009592326139088) internal successors, (1085), 854 states have internal predecessors, (1085), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:45,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1085 transitions. [2021-11-19 13:32:45,145 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1085 transitions. Word has length 117 [2021-11-19 13:32:45,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:45,145 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1085 transitions. [2021-11-19 13:32:45,146 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:45,146 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1085 transitions. [2021-11-19 13:32:45,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:45,146 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:45,147 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:45,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 13:32:45,147 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:45,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:45,147 INFO L85 PathProgramCache]: Analyzing trace with hash 708418848, now seen corresponding path program 1 times [2021-11-19 13:32:45,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:45,148 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594934913] [2021-11-19 13:32:45,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:45,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:45,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:45,297 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:45,297 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594934913] [2021-11-19 13:32:45,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594934913] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:45,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:45,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:45,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693440886] [2021-11-19 13:32:45,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:45,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:45,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:45,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:45,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:45,299 INFO L87 Difference]: Start difference. First operand 855 states and 1085 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:46,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:46,763 INFO L93 Difference]: Finished difference Result 1582 states and 2010 transitions. [2021-11-19 13:32:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:46,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:46,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:46,765 INFO L225 Difference]: With dead ends: 1582 [2021-11-19 13:32:46,765 INFO L226 Difference]: Without dead ends: 1467 [2021-11-19 13:32:46,766 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:46,766 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 2772 mSDsluCounter, 1475 mSDsCounter, 0 mSdLazyCounter, 1433 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2772 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 1560 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:46,767 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2772 Valid, 1955 Invalid, 1560 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 1433 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:32:46,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1467 states. [2021-11-19 13:32:47,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1467 to 855. [2021-11-19 13:32:47,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.2997601918465227) internal successors, (1084), 854 states have internal predecessors, (1084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:47,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1084 transitions. [2021-11-19 13:32:47,024 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1084 transitions. Word has length 117 [2021-11-19 13:32:47,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:47,024 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1084 transitions. [2021-11-19 13:32:47,024 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1084 transitions. [2021-11-19 13:32:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:47,026 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:47,027 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:47,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 13:32:47,027 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:47,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:47,028 INFO L85 PathProgramCache]: Analyzing trace with hash -327780634, now seen corresponding path program 1 times [2021-11-19 13:32:47,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:47,028 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631299942] [2021-11-19 13:32:47,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:47,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:47,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:47,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:47,453 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:47,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631299942] [2021-11-19 13:32:47,454 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631299942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:47,454 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:47,454 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:32:47,454 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338785275] [2021-11-19 13:32:47,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:47,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:32:47,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:47,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:32:47,455 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:32:47,455 INFO L87 Difference]: Start difference. First operand 855 states and 1084 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:49,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:49,412 INFO L93 Difference]: Finished difference Result 1868 states and 2404 transitions. [2021-11-19 13:32:49,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:32:49,413 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:49,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:49,415 INFO L225 Difference]: With dead ends: 1868 [2021-11-19 13:32:49,415 INFO L226 Difference]: Without dead ends: 1755 [2021-11-19 13:32:49,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:32:49,417 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 3274 mSDsluCounter, 4872 mSDsCounter, 0 mSdLazyCounter, 1128 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3274 SdHoareTripleChecker+Valid, 5711 SdHoareTripleChecker+Invalid, 1201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:49,417 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3274 Valid, 5711 Invalid, 1201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1128 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:32:49,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1755 states. [2021-11-19 13:32:49,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1755 to 854. [2021-11-19 13:32:49,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2989195678271308) internal successors, (1082), 853 states have internal predecessors, (1082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:49,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1082 transitions. [2021-11-19 13:32:49,673 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1082 transitions. Word has length 117 [2021-11-19 13:32:49,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:49,673 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1082 transitions. [2021-11-19 13:32:49,674 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:49,674 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1082 transitions. [2021-11-19 13:32:49,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-11-19 13:32:49,675 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:49,676 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:49,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 13:32:49,676 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:49,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:49,677 INFO L85 PathProgramCache]: Analyzing trace with hash 660005984, now seen corresponding path program 1 times [2021-11-19 13:32:49,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:49,677 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688971356] [2021-11-19 13:32:49,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:49,677 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:49,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:49,828 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:49,828 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688971356] [2021-11-19 13:32:49,829 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688971356] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:49,829 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:49,829 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:49,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070564507] [2021-11-19 13:32:49,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:49,830 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:49,830 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:49,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:49,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:49,831 INFO L87 Difference]: Start difference. First operand 854 states and 1082 transitions. Second operand has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:51,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:51,825 INFO L93 Difference]: Finished difference Result 1796 states and 2306 transitions. [2021-11-19 13:32:51,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:51,825 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 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 117 [2021-11-19 13:32:51,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:51,827 INFO L225 Difference]: With dead ends: 1796 [2021-11-19 13:32:51,827 INFO L226 Difference]: Without dead ends: 1612 [2021-11-19 13:32:51,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:51,829 INFO L933 BasicCegarLoop]: 756 mSDtfsCounter, 1676 mSDsluCounter, 2209 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1676 SdHoareTripleChecker+Valid, 2956 SdHoareTripleChecker+Invalid, 2077 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:51,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1676 Valid, 2956 Invalid, 2077 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:32:51,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1612 states. [2021-11-19 13:32:52,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1612 to 854. [2021-11-19 13:32:52,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.297719087635054) internal successors, (1081), 853 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:52,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1081 transitions. [2021-11-19 13:32:52,122 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1081 transitions. Word has length 117 [2021-11-19 13:32:52,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:52,122 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1081 transitions. [2021-11-19 13:32:52,122 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.625) internal successors, (117), 7 states have internal predecessors, (117), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:52,122 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1081 transitions. [2021-11-19 13:32:52,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 13:32:52,123 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:52,123 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:52,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 13:32:52,124 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:52,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:52,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1530313190, now seen corresponding path program 1 times [2021-11-19 13:32:52,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:52,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709397907] [2021-11-19 13:32:52,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:52,125 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:52,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:52,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:52,289 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:52,290 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709397907] [2021-11-19 13:32:52,290 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709397907] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:52,290 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:52,290 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:52,291 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941947130] [2021-11-19 13:32:52,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:52,291 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:52,291 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:52,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:52,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:52,292 INFO L87 Difference]: Start difference. First operand 854 states and 1081 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:54,158 INFO L93 Difference]: Finished difference Result 1584 states and 2008 transitions. [2021-11-19 13:32:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 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 118 [2021-11-19 13:32:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:54,160 INFO L225 Difference]: With dead ends: 1584 [2021-11-19 13:32:54,160 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:32:54,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:32:54,162 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 1890 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1414 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1890 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:54,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1890 Valid, 1967 Invalid, 1495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1414 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:32:54,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:32:54,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:32:54,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2953181272509005) internal successors, (1079), 853 states have internal predecessors, (1079), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:54,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1079 transitions. [2021-11-19 13:32:54,493 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1079 transitions. Word has length 118 [2021-11-19 13:32:54,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:54,493 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1079 transitions. [2021-11-19 13:32:54,494 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:54,494 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1079 transitions. [2021-11-19 13:32:54,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 13:32:54,495 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:54,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:54,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 13:32:54,495 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:54,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:54,495 INFO L85 PathProgramCache]: Analyzing trace with hash -267490650, now seen corresponding path program 1 times [2021-11-19 13:32:54,495 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:54,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869099822] [2021-11-19 13:32:54,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:54,496 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:54,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:54,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:54,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:54,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869099822] [2021-11-19 13:32:54,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869099822] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:54,647 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:54,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:54,647 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941377107] [2021-11-19 13:32:54,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:54,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:54,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:54,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:54,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:54,649 INFO L87 Difference]: Start difference. First operand 854 states and 1079 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:56,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:56,342 INFO L93 Difference]: Finished difference Result 1584 states and 2006 transitions. [2021-11-19 13:32:56,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:56,343 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 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 118 [2021-11-19 13:32:56,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:56,344 INFO L225 Difference]: With dead ends: 1584 [2021-11-19 13:32:56,345 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:32:56,345 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:32:56,346 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 2731 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1410 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2731 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:56,346 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2731 Valid, 1967 Invalid, 1534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1410 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:32:56,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:32:56,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:32:56,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2929171668667467) internal successors, (1077), 853 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:56,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1077 transitions. [2021-11-19 13:32:56,600 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1077 transitions. Word has length 118 [2021-11-19 13:32:56,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:56,600 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1077 transitions. [2021-11-19 13:32:56,600 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:56,600 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1077 transitions. [2021-11-19 13:32:56,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 13:32:56,601 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:56,601 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:56,601 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-19 13:32:56,601 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:56,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:56,602 INFO L85 PathProgramCache]: Analyzing trace with hash -163297850, now seen corresponding path program 1 times [2021-11-19 13:32:56,602 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:56,602 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [791484660] [2021-11-19 13:32:56,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:56,602 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:56,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:56,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:56,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:56,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [791484660] [2021-11-19 13:32:56,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [791484660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:56,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:56,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:56,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205052674] [2021-11-19 13:32:56,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:56,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:56,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:56,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:56,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:56,772 INFO L87 Difference]: Start difference. First operand 854 states and 1077 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:58,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:32:58,984 INFO L93 Difference]: Finished difference Result 1584 states and 2004 transitions. [2021-11-19 13:32:58,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:32:58,985 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 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 118 [2021-11-19 13:32:58,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:32:58,986 INFO L225 Difference]: With dead ends: 1584 [2021-11-19 13:32:58,986 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:32:58,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:32:58,988 INFO L933 BasicCegarLoop]: 486 mSDtfsCounter, 2728 mSDsluCounter, 1488 mSDsCounter, 0 mSdLazyCounter, 1406 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2728 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 1530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1406 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:32:58,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2728 Valid, 1967 Invalid, 1530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1406 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:32:58,990 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:32:59,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:32:59,264 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.290516206482593) internal successors, (1075), 853 states have internal predecessors, (1075), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:59,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1075 transitions. [2021-11-19 13:32:59,265 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1075 transitions. Word has length 118 [2021-11-19 13:32:59,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:32:59,266 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1075 transitions. [2021-11-19 13:32:59,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:32:59,266 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1075 transitions. [2021-11-19 13:32:59,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-11-19 13:32:59,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:32:59,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:32:59,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 13:32:59,267 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:32:59,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:32:59,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1717089788, now seen corresponding path program 1 times [2021-11-19 13:32:59,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:32:59,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394888865] [2021-11-19 13:32:59,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:32:59,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:32:59,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:32:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:32:59,429 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:32:59,429 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394888865] [2021-11-19 13:32:59,429 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394888865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:32:59,429 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:32:59,430 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:32:59,430 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2012234947] [2021-11-19 13:32:59,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:32:59,431 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:32:59,431 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:32:59,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:32:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:32:59,432 INFO L87 Difference]: Start difference. First operand 854 states and 1075 transitions. Second operand has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:01,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:01,303 INFO L93 Difference]: Finished difference Result 1584 states and 2002 transitions. [2021-11-19 13:33:01,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:01,305 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 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 118 [2021-11-19 13:33:01,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:01,306 INFO L225 Difference]: With dead ends: 1584 [2021-11-19 13:33:01,306 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:33:01,307 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:01,307 INFO L933 BasicCegarLoop]: 495 mSDtfsCounter, 2726 mSDsluCounter, 1502 mSDsCounter, 0 mSdLazyCounter, 1409 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2726 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1409 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:01,308 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2726 Valid, 1988 Invalid, 1533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1409 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:33:01,309 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:33:01,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:33:01,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2893157262905162) internal successors, (1074), 853 states have internal predecessors, (1074), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:01,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1074 transitions. [2021-11-19 13:33:01,596 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1074 transitions. Word has length 118 [2021-11-19 13:33:01,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:01,597 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1074 transitions. [2021-11-19 13:33:01,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.75) internal successors, (118), 7 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:01,597 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1074 transitions. [2021-11-19 13:33:01,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:01,598 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:01,598 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:01,598 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 13:33:01,598 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:01,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:01,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1287563938, now seen corresponding path program 1 times [2021-11-19 13:33:01,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:01,599 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655481158] [2021-11-19 13:33:01,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:01,599 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:01,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:01,755 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:01,755 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:01,755 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655481158] [2021-11-19 13:33:01,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655481158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:01,756 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:01,756 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:01,756 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562640303] [2021-11-19 13:33:01,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:01,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:01,757 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:01,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:01,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:01,758 INFO L87 Difference]: Start difference. First operand 854 states and 1074 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:03,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:03,457 INFO L93 Difference]: Finished difference Result 1667 states and 2123 transitions. [2021-11-19 13:33:03,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:33:03,458 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:03,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:03,464 INFO L225 Difference]: With dead ends: 1667 [2021-11-19 13:33:03,465 INFO L226 Difference]: Without dead ends: 1528 [2021-11-19 13:33:03,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:33:03,467 INFO L933 BasicCegarLoop]: 688 mSDtfsCounter, 2263 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 1603 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2263 SdHoareTripleChecker+Valid, 2582 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1603 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:03,467 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2263 Valid, 2582 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1603 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:33:03,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-19 13:33:03,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 854. [2021-11-19 13:33:03,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2869147659063624) internal successors, (1072), 853 states have internal predecessors, (1072), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:03,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1072 transitions. [2021-11-19 13:33:03,806 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1072 transitions. Word has length 119 [2021-11-19 13:33:03,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:03,806 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1072 transitions. [2021-11-19 13:33:03,807 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:03,807 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1072 transitions. [2021-11-19 13:33:03,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:03,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:03,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:03,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 13:33:03,808 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:03,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:03,809 INFO L85 PathProgramCache]: Analyzing trace with hash -1428201762, now seen corresponding path program 1 times [2021-11-19 13:33:03,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:03,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537410294] [2021-11-19 13:33:03,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:03,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:03,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:03,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:03,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:03,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537410294] [2021-11-19 13:33:03,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537410294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:03,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:03,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:03,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532255111] [2021-11-19 13:33:03,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:03,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:03,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:03,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:03,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:03,966 INFO L87 Difference]: Start difference. First operand 854 states and 1072 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:05,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:05,754 INFO L93 Difference]: Finished difference Result 1731 states and 2204 transitions. [2021-11-19 13:33:05,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:05,755 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:05,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:05,757 INFO L225 Difference]: With dead ends: 1731 [2021-11-19 13:33:05,758 INFO L226 Difference]: Without dead ends: 1548 [2021-11-19 13:33:05,758 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:05,761 INFO L933 BasicCegarLoop]: 692 mSDtfsCounter, 1642 mSDsluCounter, 2031 mSDsCounter, 0 mSdLazyCounter, 1831 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1642 SdHoareTripleChecker+Valid, 2714 SdHoareTripleChecker+Invalid, 1856 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 1831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:05,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1642 Valid, 2714 Invalid, 1856 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 1831 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:33:05,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2021-11-19 13:33:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 854. [2021-11-19 13:33:06,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.284513805522209) internal successors, (1070), 853 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:06,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1070 transitions. [2021-11-19 13:33:06,039 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1070 transitions. Word has length 119 [2021-11-19 13:33:06,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:06,039 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1070 transitions. [2021-11-19 13:33:06,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:06,039 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1070 transitions. [2021-11-19 13:33:06,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:06,040 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:06,040 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:06,041 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 13:33:06,041 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash -1328095074, now seen corresponding path program 1 times [2021-11-19 13:33:06,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:06,042 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608877367] [2021-11-19 13:33:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:06,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:06,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:06,183 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:06,183 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:06,183 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608877367] [2021-11-19 13:33:06,184 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608877367] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:06,184 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:06,184 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:06,184 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589771192] [2021-11-19 13:33:06,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:06,185 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:06,185 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:06,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:06,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:06,186 INFO L87 Difference]: Start difference. First operand 854 states and 1070 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:07,937 INFO L93 Difference]: Finished difference Result 1588 states and 2001 transitions. [2021-11-19 13:33:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:07,938 INFO L225 Difference]: With dead ends: 1588 [2021-11-19 13:33:07,939 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:33:07,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:07,940 INFO L933 BasicCegarLoop]: 531 mSDtfsCounter, 2617 mSDsluCounter, 1572 mSDsCounter, 0 mSdLazyCounter, 1516 mSolverCounterSat, 120 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2617 SdHoareTripleChecker+Valid, 2094 SdHoareTripleChecker+Invalid, 1636 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 120 IncrementalHoareTripleChecker+Valid, 1516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:07,940 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2617 Valid, 2094 Invalid, 1636 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [120 Valid, 1516 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:33:07,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:33:08,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:33:08,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2821128451380552) internal successors, (1068), 853 states have internal predecessors, (1068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:08,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1068 transitions. [2021-11-19 13:33:08,187 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1068 transitions. Word has length 119 [2021-11-19 13:33:08,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:08,187 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1068 transitions. [2021-11-19 13:33:08,187 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:08,187 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1068 transitions. [2021-11-19 13:33:08,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:08,188 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:08,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:08,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-19 13:33:08,188 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:08,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:08,189 INFO L85 PathProgramCache]: Analyzing trace with hash -2127835810, now seen corresponding path program 1 times [2021-11-19 13:33:08,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:08,189 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278480669] [2021-11-19 13:33:08,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:08,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:08,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:08,296 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:08,296 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:08,296 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278480669] [2021-11-19 13:33:08,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278480669] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:08,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:08,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:08,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816294602] [2021-11-19 13:33:08,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:08,297 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:08,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:08,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:08,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:08,298 INFO L87 Difference]: Start difference. First operand 854 states and 1068 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:09,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:09,867 INFO L93 Difference]: Finished difference Result 1588 states and 1997 transitions. [2021-11-19 13:33:09,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:09,867 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:09,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:09,868 INFO L225 Difference]: With dead ends: 1588 [2021-11-19 13:33:09,868 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:33:09,869 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:09,869 INFO L933 BasicCegarLoop]: 510 mSDtfsCounter, 2659 mSDsluCounter, 1549 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2659 SdHoareTripleChecker+Valid, 2050 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:09,869 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2659 Valid, 2050 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:33:09,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:33:10,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:33:10,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2797118847539015) internal successors, (1066), 853 states have internal predecessors, (1066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:10,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1066 transitions. [2021-11-19 13:33:10,136 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1066 transitions. Word has length 119 [2021-11-19 13:33:10,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:10,136 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1066 transitions. [2021-11-19 13:33:10,136 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:10,136 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1066 transitions. [2021-11-19 13:33:10,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:10,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:10,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:10,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-19 13:33:10,138 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:10,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:10,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1345223326, now seen corresponding path program 1 times [2021-11-19 13:33:10,138 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:10,138 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930266309] [2021-11-19 13:33:10,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:10,138 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:10,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:10,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:10,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930266309] [2021-11-19 13:33:10,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930266309] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:10,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:10,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:10,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383992875] [2021-11-19 13:33:10,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:10,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:10,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:10,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:10,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:10,300 INFO L87 Difference]: Start difference. First operand 854 states and 1066 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:12,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:12,224 INFO L93 Difference]: Finished difference Result 1667 states and 2113 transitions. [2021-11-19 13:33:12,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:33:12,224 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:12,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:12,226 INFO L225 Difference]: With dead ends: 1667 [2021-11-19 13:33:12,226 INFO L226 Difference]: Without dead ends: 1528 [2021-11-19 13:33:12,227 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:33:12,227 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 1555 mSDsluCounter, 2558 mSDsCounter, 0 mSdLazyCounter, 2166 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1555 SdHoareTripleChecker+Valid, 3324 SdHoareTripleChecker+Invalid, 2199 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 2166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:12,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1555 Valid, 3324 Invalid, 2199 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 2166 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:33:12,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-19 13:33:12,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 854. [2021-11-19 13:33:12,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2773109243697478) internal successors, (1064), 853 states have internal predecessors, (1064), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:12,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1064 transitions. [2021-11-19 13:33:12,538 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1064 transitions. Word has length 119 [2021-11-19 13:33:12,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:12,539 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1064 transitions. [2021-11-19 13:33:12,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:12,539 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1064 transitions. [2021-11-19 13:33:12,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:12,540 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:12,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:12,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-19 13:33:12,540 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:12,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:12,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1363592542, now seen corresponding path program 1 times [2021-11-19 13:33:12,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:12,541 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257410844] [2021-11-19 13:33:12,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:12,541 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:12,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:12,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:12,697 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:12,698 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257410844] [2021-11-19 13:33:12,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257410844] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:12,698 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:12,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:12,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246734701] [2021-11-19 13:33:12,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:12,699 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:12,699 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:12,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:12,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:12,700 INFO L87 Difference]: Start difference. First operand 854 states and 1064 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:14,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:14,770 INFO L93 Difference]: Finished difference Result 1667 states and 2109 transitions. [2021-11-19 13:33:14,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:33:14,770 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:14,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:14,772 INFO L225 Difference]: With dead ends: 1667 [2021-11-19 13:33:14,772 INFO L226 Difference]: Without dead ends: 1528 [2021-11-19 13:33:14,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:33:14,773 INFO L933 BasicCegarLoop]: 723 mSDtfsCounter, 1556 mSDsluCounter, 2418 mSDsCounter, 0 mSdLazyCounter, 1935 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 3128 SdHoareTripleChecker+Invalid, 1970 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:14,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1556 Valid, 3128 Invalid, 1970 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1935 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:33:14,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-19 13:33:15,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 854. [2021-11-19 13:33:15,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2749099639855943) internal successors, (1062), 853 states have internal predecessors, (1062), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:15,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1062 transitions. [2021-11-19 13:33:15,080 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1062 transitions. Word has length 119 [2021-11-19 13:33:15,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:15,080 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1062 transitions. [2021-11-19 13:33:15,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:15,081 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1062 transitions. [2021-11-19 13:33:15,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:15,081 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:15,082 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:15,082 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-19 13:33:15,082 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:15,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:15,082 INFO L85 PathProgramCache]: Analyzing trace with hash -2109466594, now seen corresponding path program 1 times [2021-11-19 13:33:15,082 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:15,082 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860742022] [2021-11-19 13:33:15,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:15,083 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:15,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:15,240 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:15,240 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860742022] [2021-11-19 13:33:15,241 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860742022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:15,241 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:15,241 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:15,241 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1438981654] [2021-11-19 13:33:15,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:15,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:15,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:15,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:15,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:15,243 INFO L87 Difference]: Start difference. First operand 854 states and 1062 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:17,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:17,182 INFO L93 Difference]: Finished difference Result 1588 states and 1991 transitions. [2021-11-19 13:33:17,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:17,183 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:17,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:17,188 INFO L225 Difference]: With dead ends: 1588 [2021-11-19 13:33:17,188 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:33:17,190 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:33:17,190 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 2463 mSDsluCounter, 1695 mSDsCounter, 0 mSdLazyCounter, 1572 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2463 SdHoareTripleChecker+Valid, 2246 SdHoareTripleChecker+Invalid, 1687 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:17,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2463 Valid, 2246 Invalid, 1687 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 1572 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:33:17,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:33:17,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:33:17,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2725090036014406) internal successors, (1060), 853 states have internal predecessors, (1060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1060 transitions. [2021-11-19 13:33:17,559 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1060 transitions. Word has length 119 [2021-11-19 13:33:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:17,559 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1060 transitions. [2021-11-19 13:33:17,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1060 transitions. [2021-11-19 13:33:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:17,560 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:17,560 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:17,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-19 13:33:17,561 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:17,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:17,561 INFO L85 PathProgramCache]: Analyzing trace with hash -1309725858, now seen corresponding path program 1 times [2021-11-19 13:33:17,561 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:17,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243323015] [2021-11-19 13:33:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:17,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:17,726 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:17,726 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:17,726 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243323015] [2021-11-19 13:33:17,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243323015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:17,727 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:17,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:17,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954900813] [2021-11-19 13:33:17,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:17,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:17,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:17,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:17,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:17,729 INFO L87 Difference]: Start difference. First operand 854 states and 1060 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:19,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:19,799 INFO L93 Difference]: Finished difference Result 1588 states and 1989 transitions. [2021-11-19 13:33:19,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:19,799 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:19,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:19,801 INFO L225 Difference]: With dead ends: 1588 [2021-11-19 13:33:19,801 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:33:19,801 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:19,802 INFO L933 BasicCegarLoop]: 581 mSDtfsCounter, 1685 mSDsluCounter, 1722 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:19,802 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 2294 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:33:19,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:33:20,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:33:20,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2701080432172869) internal successors, (1058), 853 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:20,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1058 transitions. [2021-11-19 13:33:20,133 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1058 transitions. Word has length 119 [2021-11-19 13:33:20,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:20,134 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1058 transitions. [2021-11-19 13:33:20,134 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:20,134 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1058 transitions. [2021-11-19 13:33:20,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:20,135 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:20,135 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:20,135 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-19 13:33:20,135 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:20,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:20,136 INFO L85 PathProgramCache]: Analyzing trace with hash 1877368830, now seen corresponding path program 1 times [2021-11-19 13:33:20,136 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:20,136 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957647433] [2021-11-19 13:33:20,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:20,136 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:20,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:20,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:20,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957647433] [2021-11-19 13:33:20,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957647433] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:20,299 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:20,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:20,299 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49744164] [2021-11-19 13:33:20,299 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:20,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:20,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:20,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:20,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:20,301 INFO L87 Difference]: Start difference. First operand 854 states and 1058 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:22,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:22,249 INFO L93 Difference]: Finished difference Result 1588 states and 1985 transitions. [2021-11-19 13:33:22,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:22,250 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:22,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:22,251 INFO L225 Difference]: With dead ends: 1588 [2021-11-19 13:33:22,252 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:33:22,252 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:22,252 INFO L933 BasicCegarLoop]: 561 mSDtfsCounter, 2505 mSDsluCounter, 1664 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2505 SdHoareTripleChecker+Valid, 2216 SdHoareTripleChecker+Invalid, 1646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:22,253 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2505 Valid, 2216 Invalid, 1646 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:33:22,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:33:22,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:33:22,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2677070828331332) internal successors, (1056), 853 states have internal predecessors, (1056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:22,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1056 transitions. [2021-11-19 13:33:22,575 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1056 transitions. Word has length 119 [2021-11-19 13:33:22,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:22,575 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1056 transitions. [2021-11-19 13:33:22,575 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:22,575 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1056 transitions. [2021-11-19 13:33:22,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:22,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:22,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:22,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-19 13:33:22,577 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:22,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:22,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1509015355, now seen corresponding path program 1 times [2021-11-19 13:33:22,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:22,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375564440] [2021-11-19 13:33:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:22,577 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:22,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:22,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:22,713 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:22,713 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375564440] [2021-11-19 13:33:22,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375564440] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:22,713 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:22,713 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:22,713 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864226616] [2021-11-19 13:33:22,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:22,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:22,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:22,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:22,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:22,714 INFO L87 Difference]: Start difference. First operand 854 states and 1056 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:24,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:24,687 INFO L93 Difference]: Finished difference Result 1654 states and 2078 transitions. [2021-11-19 13:33:24,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:33:24,687 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:24,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:24,689 INFO L225 Difference]: With dead ends: 1654 [2021-11-19 13:33:24,689 INFO L226 Difference]: Without dead ends: 1528 [2021-11-19 13:33:24,690 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:33:24,690 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 1719 mSDsluCounter, 2182 mSDsCounter, 0 mSdLazyCounter, 1639 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1719 SdHoareTripleChecker+Valid, 2852 SdHoareTripleChecker+Invalid, 1675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:24,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1719 Valid, 2852 Invalid, 1675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1639 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-11-19 13:33:24,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-19 13:33:24,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 854. [2021-11-19 13:33:24,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2665066026410565) internal successors, (1055), 853 states have internal predecessors, (1055), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:25,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1055 transitions. [2021-11-19 13:33:25,000 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1055 transitions. Word has length 119 [2021-11-19 13:33:25,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:25,000 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1055 transitions. [2021-11-19 13:33:25,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:25,000 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1055 transitions. [2021-11-19 13:33:25,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:25,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:25,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:25,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-19 13:33:25,001 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:25,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:25,002 INFO L85 PathProgramCache]: Analyzing trace with hash -853614373, now seen corresponding path program 1 times [2021-11-19 13:33:25,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:25,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349602894] [2021-11-19 13:33:25,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:25,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:25,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:25,118 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:25,118 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:25,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349602894] [2021-11-19 13:33:25,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349602894] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:25,118 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:25,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:25,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147423951] [2021-11-19 13:33:25,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:25,119 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:25,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:25,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:25,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:25,119 INFO L87 Difference]: Start difference. First operand 854 states and 1055 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:26,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:26,682 INFO L93 Difference]: Finished difference Result 1581 states and 1972 transitions. [2021-11-19 13:33:26,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:26,683 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:26,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:26,684 INFO L225 Difference]: With dead ends: 1581 [2021-11-19 13:33:26,684 INFO L226 Difference]: Without dead ends: 1466 [2021-11-19 13:33:26,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:26,685 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 2525 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1438 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2525 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 1438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:26,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2525 Valid, 2187 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 1438 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:33:26,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2021-11-19 13:33:26,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 854. [2021-11-19 13:33:26,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 833 states have (on average 1.2653061224489797) internal successors, (1054), 853 states have internal predecessors, (1054), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:26,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 1054 transitions. [2021-11-19 13:33:26,957 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 1054 transitions. Word has length 119 [2021-11-19 13:33:26,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:26,957 INFO L470 AbstractCegarLoop]: Abstraction has 854 states and 1054 transitions. [2021-11-19 13:33:26,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:26,957 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 1054 transitions. [2021-11-19 13:33:26,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:26,958 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:26,958 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:26,958 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-19 13:33:26,958 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:26,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:26,959 INFO L85 PathProgramCache]: Analyzing trace with hash -2134274085, now seen corresponding path program 1 times [2021-11-19 13:33:26,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:26,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677595680] [2021-11-19 13:33:26,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:26,959 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:26,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:27,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:27,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:27,189 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677595680] [2021-11-19 13:33:27,189 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677595680] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:27,189 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:27,189 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:33:27,189 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931196732] [2021-11-19 13:33:27,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:27,189 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:33:27,189 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:27,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:33:27,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:33:27,190 INFO L87 Difference]: Start difference. First operand 854 states and 1054 transitions. Second operand has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:30,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:30,520 INFO L93 Difference]: Finished difference Result 2271 states and 2888 transitions. [2021-11-19 13:33:30,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-19 13:33:30,520 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:30,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:30,522 INFO L225 Difference]: With dead ends: 2271 [2021-11-19 13:33:30,522 INFO L226 Difference]: Without dead ends: 2145 [2021-11-19 13:33:30,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-19 13:33:30,523 INFO L933 BasicCegarLoop]: 679 mSDtfsCounter, 4681 mSDsluCounter, 2782 mSDsCounter, 0 mSdLazyCounter, 2368 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4681 SdHoareTripleChecker+Valid, 3447 SdHoareTripleChecker+Invalid, 2796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2368 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:30,523 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4681 Valid, 3447 Invalid, 2796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2368 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-19 13:33:30,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2145 states. [2021-11-19 13:33:30,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2145 to 859. [2021-11-19 13:33:30,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 838 states have (on average 1.2637231503579953) internal successors, (1059), 858 states have internal predecessors, (1059), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:30,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1059 transitions. [2021-11-19 13:33:30,858 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1059 transitions. Word has length 119 [2021-11-19 13:33:30,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:30,859 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1059 transitions. [2021-11-19 13:33:30,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 10.818181818181818) internal successors, (119), 10 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:30,859 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1059 transitions. [2021-11-19 13:33:30,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:30,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:30,860 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:30,860 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-19 13:33:30,860 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:30,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:30,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1458165509, now seen corresponding path program 1 times [2021-11-19 13:33:30,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:30,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1803925269] [2021-11-19 13:33:30,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:30,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:30,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:30,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:30,972 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:30,973 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1803925269] [2021-11-19 13:33:30,973 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1803925269] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:30,973 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:30,973 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:30,973 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616833460] [2021-11-19 13:33:30,973 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:30,973 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:30,973 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:30,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:30,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:30,974 INFO L87 Difference]: Start difference. First operand 859 states and 1059 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:32,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:32,649 INFO L93 Difference]: Finished difference Result 1586 states and 1976 transitions. [2021-11-19 13:33:32,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:33:32,649 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:32,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:32,651 INFO L225 Difference]: With dead ends: 1586 [2021-11-19 13:33:32,651 INFO L226 Difference]: Without dead ends: 1471 [2021-11-19 13:33:32,651 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:33:32,652 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1769 mSDsluCounter, 1652 mSDsCounter, 0 mSdLazyCounter, 1434 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1769 SdHoareTripleChecker+Valid, 2187 SdHoareTripleChecker+Invalid, 1511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:32,652 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1769 Valid, 2187 Invalid, 1511 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1434 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:33:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1471 states. [2021-11-19 13:33:32,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1471 to 859. [2021-11-19 13:33:32,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 838 states have (on average 1.2625298329355608) internal successors, (1058), 858 states have internal predecessors, (1058), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:32,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1058 transitions. [2021-11-19 13:33:32,977 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1058 transitions. Word has length 119 [2021-11-19 13:33:32,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:32,978 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1058 transitions. [2021-11-19 13:33:32,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:32,978 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1058 transitions. [2021-11-19 13:33:32,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-19 13:33:32,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:32,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:32,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-19 13:33:32,980 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:32,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:32,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2038910331, now seen corresponding path program 1 times [2021-11-19 13:33:32,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:32,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064037471] [2021-11-19 13:33:32,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:32,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:33,122 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:33,122 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064037471] [2021-11-19 13:33:33,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064037471] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:33,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:33,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:33:33,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583281584] [2021-11-19 13:33:33,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:33,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:33:33,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:33,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:33:33,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:33:33,124 INFO L87 Difference]: Start difference. First operand 859 states and 1058 transitions. Second operand has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:34,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:34,775 INFO L93 Difference]: Finished difference Result 1650 states and 2069 transitions. [2021-11-19 13:33:34,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:33:34,776 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 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 119 [2021-11-19 13:33:34,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:34,777 INFO L225 Difference]: With dead ends: 1650 [2021-11-19 13:33:34,778 INFO L226 Difference]: Without dead ends: 1528 [2021-11-19 13:33:34,778 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:33:34,778 INFO L933 BasicCegarLoop]: 706 mSDtfsCounter, 2212 mSDsluCounter, 1973 mSDsCounter, 0 mSdLazyCounter, 1566 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2212 SdHoareTripleChecker+Valid, 2672 SdHoareTripleChecker+Invalid, 1615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 1566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:34,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2212 Valid, 2672 Invalid, 1615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 1566 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:33:34,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1528 states. [2021-11-19 13:33:35,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1528 to 859. [2021-11-19 13:33:35,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 859 states, 838 states have (on average 1.2613365155131264) internal successors, (1057), 858 states have internal predecessors, (1057), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:35,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 859 states to 859 states and 1057 transitions. [2021-11-19 13:33:35,072 INFO L78 Accepts]: Start accepts. Automaton has 859 states and 1057 transitions. Word has length 119 [2021-11-19 13:33:35,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:35,072 INFO L470 AbstractCegarLoop]: Abstraction has 859 states and 1057 transitions. [2021-11-19 13:33:35,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.875) internal successors, (119), 7 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:35,072 INFO L276 IsEmpty]: Start isEmpty. Operand 859 states and 1057 transitions. [2021-11-19 13:33:35,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:33:35,073 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:35,073 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:35,074 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-19 13:33:35,074 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:35,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:35,074 INFO L85 PathProgramCache]: Analyzing trace with hash -2000163967, now seen corresponding path program 1 times [2021-11-19 13:33:35,074 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:35,075 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198954523] [2021-11-19 13:33:35,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:35,075 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:35,466 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:35,466 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:35,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198954523] [2021-11-19 13:33:35,466 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198954523] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:35,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:35,467 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:33:35,467 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917108135] [2021-11-19 13:33:35,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:35,467 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:33:35,467 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:35,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:33:35,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:33:35,468 INFO L87 Difference]: Start difference. First operand 859 states and 1057 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:38,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:38,823 INFO L93 Difference]: Finished difference Result 2543 states and 3147 transitions. [2021-11-19 13:33:38,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 13:33:38,824 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 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 120 [2021-11-19 13:33:38,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:38,827 INFO L225 Difference]: With dead ends: 2543 [2021-11-19 13:33:38,827 INFO L226 Difference]: Without dead ends: 2429 [2021-11-19 13:33:38,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:33:38,828 INFO L933 BasicCegarLoop]: 1072 mSDtfsCounter, 3231 mSDsluCounter, 7181 mSDsCounter, 0 mSdLazyCounter, 2062 mSolverCounterSat, 164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3231 SdHoareTripleChecker+Valid, 7976 SdHoareTripleChecker+Invalid, 2226 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 164 IncrementalHoareTripleChecker+Valid, 2062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:38,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3231 Valid, 7976 Invalid, 2226 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [164 Valid, 2062 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 13:33:38,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2429 states. [2021-11-19 13:33:39,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2429 to 857. [2021-11-19 13:33:39,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 857 states, 836 states have (on average 1.2595693779904307) internal successors, (1053), 856 states have internal predecessors, (1053), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:39,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 857 states to 857 states and 1053 transitions. [2021-11-19 13:33:39,167 INFO L78 Accepts]: Start accepts. Automaton has 857 states and 1053 transitions. Word has length 120 [2021-11-19 13:33:39,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:39,168 INFO L470 AbstractCegarLoop]: Abstraction has 857 states and 1053 transitions. [2021-11-19 13:33:39,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:39,168 INFO L276 IsEmpty]: Start isEmpty. Operand 857 states and 1053 transitions. [2021-11-19 13:33:39,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:33:39,169 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:39,170 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:39,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-19 13:33:39,170 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:39,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:39,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1331033441, now seen corresponding path program 1 times [2021-11-19 13:33:39,171 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:39,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521683114] [2021-11-19 13:33:39,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:39,171 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:39,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:39,544 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:39,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521683114] [2021-11-19 13:33:39,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521683114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:39,544 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:39,544 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:33:39,544 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8812333] [2021-11-19 13:33:39,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:39,545 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:33:39,545 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:39,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:33:39,545 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:33:39,545 INFO L87 Difference]: Start difference. First operand 857 states and 1053 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:43,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:43,280 INFO L93 Difference]: Finished difference Result 2539 states and 3141 transitions. [2021-11-19 13:33:43,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 13:33:43,281 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 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 120 [2021-11-19 13:33:43,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:43,283 INFO L225 Difference]: With dead ends: 2539 [2021-11-19 13:33:43,283 INFO L226 Difference]: Without dead ends: 2425 [2021-11-19 13:33:43,283 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:33:43,284 INFO L933 BasicCegarLoop]: 1086 mSDtfsCounter, 3891 mSDsluCounter, 6779 mSDsCounter, 0 mSdLazyCounter, 2010 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3891 SdHoareTripleChecker+Valid, 7600 SdHoareTripleChecker+Invalid, 2216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 2010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:43,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3891 Valid, 7600 Invalid, 2216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 2010 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-19 13:33:43,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2425 states. [2021-11-19 13:33:43,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2425 to 855. [2021-11-19 13:33:43,654 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 855 states, 834 states have (on average 1.2577937649880095) internal successors, (1049), 854 states have internal predecessors, (1049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:43,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 855 states to 855 states and 1049 transitions. [2021-11-19 13:33:43,655 INFO L78 Accepts]: Start accepts. Automaton has 855 states and 1049 transitions. Word has length 120 [2021-11-19 13:33:43,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:43,656 INFO L470 AbstractCegarLoop]: Abstraction has 855 states and 1049 transitions. [2021-11-19 13:33:43,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:43,656 INFO L276 IsEmpty]: Start isEmpty. Operand 855 states and 1049 transitions. [2021-11-19 13:33:43,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:33:43,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:43,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:43,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-19 13:33:43,657 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:43,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:43,657 INFO L85 PathProgramCache]: Analyzing trace with hash 826831361, now seen corresponding path program 1 times [2021-11-19 13:33:43,657 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:43,657 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412056351] [2021-11-19 13:33:43,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:43,658 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:45,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:45,256 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:45,256 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412056351] [2021-11-19 13:33:45,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412056351] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:45,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:45,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-19 13:33:45,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145524291] [2021-11-19 13:33:45,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:45,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-19 13:33:45,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:45,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-19 13:33:45,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 13:33:45,258 INFO L87 Difference]: Start difference. First operand 855 states and 1049 transitions. Second operand has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:56,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:33:56,015 INFO L93 Difference]: Finished difference Result 1915 states and 2377 transitions. [2021-11-19 13:33:56,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 13:33:56,016 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 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 120 [2021-11-19 13:33:56,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:33:56,017 INFO L225 Difference]: With dead ends: 1915 [2021-11-19 13:33:56,018 INFO L226 Difference]: Without dead ends: 1799 [2021-11-19 13:33:56,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=691, Invalid=4279, Unknown=0, NotChecked=0, Total=4970 [2021-11-19 13:33:56,019 INFO L933 BasicCegarLoop]: 1160 mSDtfsCounter, 4035 mSDsluCounter, 25068 mSDsCounter, 0 mSdLazyCounter, 12678 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4035 SdHoareTripleChecker+Valid, 25908 SdHoareTripleChecker+Invalid, 12805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 12678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:33:56,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4035 Valid, 25908 Invalid, 12805 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 12678 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 13:33:56,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1799 states. [2021-11-19 13:33:56,374 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1799 to 880. [2021-11-19 13:33:56,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 880 states, 859 states have (on average 1.2584400465657741) internal successors, (1081), 879 states have internal predecessors, (1081), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:56,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 880 states to 880 states and 1081 transitions. [2021-11-19 13:33:56,376 INFO L78 Accepts]: Start accepts. Automaton has 880 states and 1081 transitions. Word has length 120 [2021-11-19 13:33:56,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:33:56,376 INFO L470 AbstractCegarLoop]: Abstraction has 880 states and 1081 transitions. [2021-11-19 13:33:56,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1578947368421053) internal successors, (120), 37 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:33:56,377 INFO L276 IsEmpty]: Start isEmpty. Operand 880 states and 1081 transitions. [2021-11-19 13:33:56,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:33:56,377 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:33:56,377 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:33:56,378 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-19 13:33:56,378 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:33:56,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:33:56,378 INFO L85 PathProgramCache]: Analyzing trace with hash -1986769439, now seen corresponding path program 1 times [2021-11-19 13:33:56,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:33:56,378 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940811415] [2021-11-19 13:33:56,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:33:56,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:33:56,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:33:56,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:33:56,749 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:33:56,749 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940811415] [2021-11-19 13:33:56,749 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940811415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:33:56,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:33:56,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:33:56,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674079758] [2021-11-19 13:33:56,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:33:56,750 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:33:56,750 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:33:56,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:33:56,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:33:56,751 INFO L87 Difference]: Start difference. First operand 880 states and 1081 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:00,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:00,325 INFO L93 Difference]: Finished difference Result 2562 states and 3167 transitions. [2021-11-19 13:34:00,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-19 13:34:00,325 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 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 120 [2021-11-19 13:34:00,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:00,327 INFO L225 Difference]: With dead ends: 2562 [2021-11-19 13:34:00,327 INFO L226 Difference]: Without dead ends: 2448 [2021-11-19 13:34:00,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=157, Invalid=493, Unknown=0, NotChecked=0, Total=650 [2021-11-19 13:34:00,328 INFO L933 BasicCegarLoop]: 961 mSDtfsCounter, 3875 mSDsluCounter, 6173 mSDsCounter, 0 mSdLazyCounter, 1883 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3875 SdHoareTripleChecker+Valid, 6905 SdHoareTripleChecker+Invalid, 2083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:00,329 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3875 Valid, 6905 Invalid, 2083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1883 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-19 13:34:00,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2448 states. [2021-11-19 13:34:00,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2448 to 878. [2021-11-19 13:34:00,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 857 states have (on average 1.2567094515752626) internal successors, (1077), 877 states have internal predecessors, (1077), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:00,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1077 transitions. [2021-11-19 13:34:00,727 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1077 transitions. Word has length 120 [2021-11-19 13:34:00,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:00,728 INFO L470 AbstractCegarLoop]: Abstraction has 878 states and 1077 transitions. [2021-11-19 13:34:00,728 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:00,728 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1077 transitions. [2021-11-19 13:34:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:34:00,729 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:00,729 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:00,729 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-19 13:34:00,729 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:00,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:00,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1414607647, now seen corresponding path program 1 times [2021-11-19 13:34:00,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:00,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129822745] [2021-11-19 13:34:00,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:00,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:01,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:01,110 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:01,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129822745] [2021-11-19 13:34:01,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129822745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:01,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:01,111 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:34:01,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585182695] [2021-11-19 13:34:01,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:01,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:34:01,112 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:01,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:34:01,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:34:01,113 INFO L87 Difference]: Start difference. First operand 878 states and 1077 transitions. Second operand has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:04,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:04,163 INFO L93 Difference]: Finished difference Result 2958 states and 3740 transitions. [2021-11-19 13:34:04,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 13:34:04,164 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 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 120 [2021-11-19 13:34:04,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:04,166 INFO L225 Difference]: With dead ends: 2958 [2021-11-19 13:34:04,167 INFO L226 Difference]: Without dead ends: 2641 [2021-11-19 13:34:04,167 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:34:04,168 INFO L933 BasicCegarLoop]: 1614 mSDtfsCounter, 3921 mSDsluCounter, 9971 mSDsCounter, 0 mSdLazyCounter, 1089 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3921 SdHoareTripleChecker+Valid, 11279 SdHoareTripleChecker+Invalid, 1119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 1089 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:04,168 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3921 Valid, 11279 Invalid, 1119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 1089 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:34:04,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2641 states. [2021-11-19 13:34:04,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2641 to 673. [2021-11-19 13:34:04,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 657 states have (on average 1.2465753424657535) internal successors, (819), 672 states have internal predecessors, (819), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 819 transitions. [2021-11-19 13:34:04,505 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 819 transitions. Word has length 120 [2021-11-19 13:34:04,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:04,505 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 819 transitions. [2021-11-19 13:34:04,505 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.23076923076923) internal successors, (120), 12 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:04,505 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 819 transitions. [2021-11-19 13:34:04,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:34:04,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:04,506 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:04,506 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-19 13:34:04,506 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:04,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:04,507 INFO L85 PathProgramCache]: Analyzing trace with hash -2134984887, now seen corresponding path program 1 times [2021-11-19 13:34:04,507 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:04,507 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1053113284] [2021-11-19 13:34:04,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:04,507 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:04,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:04,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:04,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:04,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1053113284] [2021-11-19 13:34:04,614 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1053113284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:04,614 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:04,614 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:34:04,614 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664394639] [2021-11-19 13:34:04,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:04,615 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:04,615 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:04,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:04,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:34:04,615 INFO L87 Difference]: Start difference. First operand 673 states and 819 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:06,221 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:06,221 INFO L93 Difference]: Finished difference Result 1316 states and 1634 transitions. [2021-11-19 13:34:06,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:34:06,221 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 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 120 [2021-11-19 13:34:06,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:06,222 INFO L225 Difference]: With dead ends: 1316 [2021-11-19 13:34:06,223 INFO L226 Difference]: Without dead ends: 1198 [2021-11-19 13:34:06,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:34:06,223 INFO L933 BasicCegarLoop]: 436 mSDtfsCounter, 2036 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 1156 mSolverCounterSat, 87 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 1243 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 87 IncrementalHoareTripleChecker+Valid, 1156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:06,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2036 Valid, 1736 Invalid, 1243 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [87 Valid, 1156 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:34:06,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1198 states. [2021-11-19 13:34:06,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1198 to 673. [2021-11-19 13:34:06,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 657 states have (on average 1.2450532724505328) internal successors, (818), 672 states have internal predecessors, (818), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:06,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 818 transitions. [2021-11-19 13:34:06,560 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 818 transitions. Word has length 120 [2021-11-19 13:34:06,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:06,560 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 818 transitions. [2021-11-19 13:34:06,560 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:06,560 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 818 transitions. [2021-11-19 13:34:06,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:34:06,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:06,561 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:06,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-19 13:34:06,561 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:06,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:06,562 INFO L85 PathProgramCache]: Analyzing trace with hash 826376713, now seen corresponding path program 1 times [2021-11-19 13:34:06,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:06,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370809481] [2021-11-19 13:34:06,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:06,562 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:06,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:06,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:06,683 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:06,683 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1370809481] [2021-11-19 13:34:06,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1370809481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:06,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:06,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:34:06,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626975269] [2021-11-19 13:34:06,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:06,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:06,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:06,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:06,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:34:06,685 INFO L87 Difference]: Start difference. First operand 673 states and 818 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:08,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:08,276 INFO L93 Difference]: Finished difference Result 1348 states and 1682 transitions. [2021-11-19 13:34:08,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:34:08,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 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 120 [2021-11-19 13:34:08,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:08,278 INFO L225 Difference]: With dead ends: 1348 [2021-11-19 13:34:08,278 INFO L226 Difference]: Without dead ends: 1217 [2021-11-19 13:34:08,278 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:34:08,279 INFO L933 BasicCegarLoop]: 554 mSDtfsCounter, 1739 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1739 SdHoareTripleChecker+Valid, 2051 SdHoareTripleChecker+Invalid, 1357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:08,279 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1739 Valid, 2051 Invalid, 1357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1321 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:34:08,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-19 13:34:08,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 673. [2021-11-19 13:34:08,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 673 states, 657 states have (on average 1.243531202435312) internal successors, (817), 672 states have internal predecessors, (817), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:08,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 673 states to 673 states and 817 transitions. [2021-11-19 13:34:08,594 INFO L78 Accepts]: Start accepts. Automaton has 673 states and 817 transitions. Word has length 120 [2021-11-19 13:34:08,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:08,594 INFO L470 AbstractCegarLoop]: Abstraction has 673 states and 817 transitions. [2021-11-19 13:34:08,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:08,594 INFO L276 IsEmpty]: Start isEmpty. Operand 673 states and 817 transitions. [2021-11-19 13:34:08,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 13:34:08,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:08,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:08,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-19 13:34:08,595 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:08,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:08,595 INFO L85 PathProgramCache]: Analyzing trace with hash -2098188955, now seen corresponding path program 1 times [2021-11-19 13:34:08,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:08,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765697623] [2021-11-19 13:34:08,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:08,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:08,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:08,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:08,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:08,706 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765697623] [2021-11-19 13:34:08,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765697623] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:08,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:08,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:34:08,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [25141125] [2021-11-19 13:34:08,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:08,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:08,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:08,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:08,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:34:08,708 INFO L87 Difference]: Start difference. First operand 673 states and 817 transitions. Second operand has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:10,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:10,412 INFO L93 Difference]: Finished difference Result 1343 states and 1675 transitions. [2021-11-19 13:34:10,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:34:10,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 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 120 [2021-11-19 13:34:10,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:10,414 INFO L225 Difference]: With dead ends: 1343 [2021-11-19 13:34:10,414 INFO L226 Difference]: Without dead ends: 1217 [2021-11-19 13:34:10,414 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:34:10,415 INFO L933 BasicCegarLoop]: 542 mSDtfsCounter, 1780 mSDsluCounter, 1592 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1780 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:10,415 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1780 Valid, 2126 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:34:10,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1217 states. [2021-11-19 13:34:10,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1217 to 668. [2021-11-19 13:34:10,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 668 states, 652 states have (on average 1.2438650306748467) internal successors, (811), 667 states have internal predecessors, (811), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:10,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 668 states to 668 states and 811 transitions. [2021-11-19 13:34:10,730 INFO L78 Accepts]: Start accepts. Automaton has 668 states and 811 transitions. Word has length 120 [2021-11-19 13:34:10,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:10,730 INFO L470 AbstractCegarLoop]: Abstraction has 668 states and 811 transitions. [2021-11-19 13:34:10,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.0) internal successors, (120), 7 states have internal predecessors, (120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:10,730 INFO L276 IsEmpty]: Start isEmpty. Operand 668 states and 811 transitions. [2021-11-19 13:34:10,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:34:10,731 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:10,731 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:10,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-19 13:34:10,731 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr23ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:10,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:10,732 INFO L85 PathProgramCache]: Analyzing trace with hash 1130103171, now seen corresponding path program 1 times [2021-11-19 13:34:10,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:10,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832050184] [2021-11-19 13:34:10,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:10,732 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:10,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:11,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:11,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:11,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832050184] [2021-11-19 13:34:11,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832050184] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:11,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:11,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:34:11,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604502955] [2021-11-19 13:34:11,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:11,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:34:11,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:11,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:34:11,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:34:11,064 INFO L87 Difference]: Start difference. First operand 668 states and 811 transitions. Second operand has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:13,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:13,219 INFO L93 Difference]: Finished difference Result 1507 states and 1818 transitions. [2021-11-19 13:34:13,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:34:13,220 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 12 states have internal predecessors, (121), 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 121 [2021-11-19 13:34:13,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:13,221 INFO L225 Difference]: With dead ends: 1507 [2021-11-19 13:34:13,221 INFO L226 Difference]: Without dead ends: 1389 [2021-11-19 13:34:13,222 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=411, Unknown=0, NotChecked=0, Total=552 [2021-11-19 13:34:13,222 INFO L933 BasicCegarLoop]: 715 mSDtfsCounter, 2611 mSDsluCounter, 4413 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2611 SdHoareTripleChecker+Valid, 5010 SdHoareTripleChecker+Invalid, 1584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:13,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2611 Valid, 5010 Invalid, 1584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:34:13,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1389 states. [2021-11-19 13:34:13,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1389 to 658. [2021-11-19 13:34:13,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 643 states have (on average 1.2379471228615864) internal successors, (796), 657 states have internal predecessors, (796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:13,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 796 transitions. [2021-11-19 13:34:13,542 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 796 transitions. Word has length 121 [2021-11-19 13:34:13,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:13,542 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 796 transitions. [2021-11-19 13:34:13,542 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.307692307692308) internal successors, (121), 12 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:13,542 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 796 transitions. [2021-11-19 13:34:13,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:34:13,543 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:13,543 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:13,543 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-19 13:34:13,543 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:13,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:13,544 INFO L85 PathProgramCache]: Analyzing trace with hash 740557379, now seen corresponding path program 1 times [2021-11-19 13:34:13,544 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:13,544 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714431251] [2021-11-19 13:34:13,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:13,544 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:13,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:14,063 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:14,063 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:14,063 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714431251] [2021-11-19 13:34:14,063 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714431251] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:14,063 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:14,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-11-19 13:34:14,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306828994] [2021-11-19 13:34:14,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:14,064 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2021-11-19 13:34:14,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:14,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2021-11-19 13:34:14,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:34:14,064 INFO L87 Difference]: Start difference. First operand 658 states and 796 transitions. Second operand has 16 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:16,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:16,418 INFO L93 Difference]: Finished difference Result 1339 states and 1606 transitions. [2021-11-19 13:34:16,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 13:34:16,418 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 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 121 [2021-11-19 13:34:16,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:16,419 INFO L225 Difference]: With dead ends: 1339 [2021-11-19 13:34:16,419 INFO L226 Difference]: Without dead ends: 1223 [2021-11-19 13:34:16,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=218, Invalid=712, Unknown=0, NotChecked=0, Total=930 [2021-11-19 13:34:16,420 INFO L933 BasicCegarLoop]: 635 mSDtfsCounter, 4144 mSDsluCounter, 3844 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 223 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4144 SdHoareTripleChecker+Valid, 4396 SdHoareTripleChecker+Invalid, 1750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 223 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:16,420 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4144 Valid, 4396 Invalid, 1750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [223 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 13:34:16,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1223 states. [2021-11-19 13:34:16,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1223 to 656. [2021-11-19 13:34:16,732 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 656 states, 641 states have (on average 1.2355694227769112) internal successors, (792), 655 states have internal predecessors, (792), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:16,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 656 states to 656 states and 792 transitions. [2021-11-19 13:34:16,732 INFO L78 Accepts]: Start accepts. Automaton has 656 states and 792 transitions. Word has length 121 [2021-11-19 13:34:16,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:16,733 INFO L470 AbstractCegarLoop]: Abstraction has 656 states and 792 transitions. [2021-11-19 13:34:16,733 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.5625) internal successors, (121), 15 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:16,733 INFO L276 IsEmpty]: Start isEmpty. Operand 656 states and 792 transitions. [2021-11-19 13:34:16,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:34:16,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:16,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:16,734 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-19 13:34:16,734 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:16,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:16,734 INFO L85 PathProgramCache]: Analyzing trace with hash 883326787, now seen corresponding path program 1 times [2021-11-19 13:34:16,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:16,734 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595319314] [2021-11-19 13:34:16,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:16,734 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:16,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:18,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:18,228 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:18,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595319314] [2021-11-19 13:34:18,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595319314] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:18,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:18,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-19 13:34:18,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58237841] [2021-11-19 13:34:18,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:18,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-19 13:34:18,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:18,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-19 13:34:18,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 13:34:18,229 INFO L87 Difference]: Start difference. First operand 656 states and 792 transitions. Second operand has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:29,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:29,099 INFO L93 Difference]: Finished difference Result 1707 states and 2099 transitions. [2021-11-19 13:34:29,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 13:34:29,099 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 37 states have internal predecessors, (121), 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 121 [2021-11-19 13:34:29,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:29,101 INFO L225 Difference]: With dead ends: 1707 [2021-11-19 13:34:29,101 INFO L226 Difference]: Without dead ends: 1588 [2021-11-19 13:34:29,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=691, Invalid=4279, Unknown=0, NotChecked=0, Total=4970 [2021-11-19 13:34:29,102 INFO L933 BasicCegarLoop]: 1200 mSDtfsCounter, 4771 mSDsluCounter, 23227 mSDsCounter, 0 mSdLazyCounter, 12443 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4771 SdHoareTripleChecker+Valid, 24136 SdHoareTripleChecker+Invalid, 12581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 12443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:29,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4771 Valid, 24136 Invalid, 12581 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [138 Valid, 12443 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2021-11-19 13:34:29,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1588 states. [2021-11-19 13:34:29,467 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1588 to 670. [2021-11-19 13:34:29,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 655 states have (on average 1.2366412213740459) internal successors, (810), 669 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:29,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 810 transitions. [2021-11-19 13:34:29,469 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 810 transitions. Word has length 121 [2021-11-19 13:34:29,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:29,469 INFO L470 AbstractCegarLoop]: Abstraction has 670 states and 810 transitions. [2021-11-19 13:34:29,469 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:29,469 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 810 transitions. [2021-11-19 13:34:29,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:34:29,470 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:29,470 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:29,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-19 13:34:29,470 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:29,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:29,471 INFO L85 PathProgramCache]: Analyzing trace with hash 1007785507, now seen corresponding path program 1 times [2021-11-19 13:34:29,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:29,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982343584] [2021-11-19 13:34:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:29,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:29,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:31,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:31,101 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:31,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982343584] [2021-11-19 13:34:31,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982343584] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:31,101 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:31,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-19 13:34:31,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460949009] [2021-11-19 13:34:31,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:31,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-19 13:34:31,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:31,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-19 13:34:31,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=1316, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 13:34:31,102 INFO L87 Difference]: Start difference. First operand 670 states and 810 transitions. Second operand has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:42,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:42,544 INFO L93 Difference]: Finished difference Result 1709 states and 2101 transitions. [2021-11-19 13:34:42,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 13:34:42,544 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 37 states have internal predecessors, (121), 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 121 [2021-11-19 13:34:42,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:42,546 INFO L225 Difference]: With dead ends: 1709 [2021-11-19 13:34:42,546 INFO L226 Difference]: Without dead ends: 1590 [2021-11-19 13:34:42,546 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 735 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=626, Invalid=4344, Unknown=0, NotChecked=0, Total=4970 [2021-11-19 13:34:42,547 INFO L933 BasicCegarLoop]: 1227 mSDtfsCounter, 4424 mSDsluCounter, 24576 mSDsCounter, 0 mSdLazyCounter, 12818 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4424 SdHoareTripleChecker+Valid, 25482 SdHoareTripleChecker+Invalid, 12937 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 12818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:42,547 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4424 Valid, 25482 Invalid, 12937 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [119 Valid, 12818 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-11-19 13:34:42,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-19 13:34:42,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 676. [2021-11-19 13:34:42,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 676 states, 661 states have (on average 1.2344931921331317) internal successors, (816), 675 states have internal predecessors, (816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:42,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 676 states to 676 states and 816 transitions. [2021-11-19 13:34:42,887 INFO L78 Accepts]: Start accepts. Automaton has 676 states and 816 transitions. Word has length 121 [2021-11-19 13:34:42,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:42,887 INFO L470 AbstractCegarLoop]: Abstraction has 676 states and 816 transitions. [2021-11-19 13:34:42,888 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.1842105263157894) internal successors, (121), 37 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:42,888 INFO L276 IsEmpty]: Start isEmpty. Operand 676 states and 816 transitions. [2021-11-19 13:34:42,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:34:42,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:42,888 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:42,888 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-19 13:34:42,889 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:42,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:42,889 INFO L85 PathProgramCache]: Analyzing trace with hash 1156078687, now seen corresponding path program 1 times [2021-11-19 13:34:42,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:42,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157614185] [2021-11-19 13:34:42,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:42,889 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:42,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:43,164 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:43,165 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157614185] [2021-11-19 13:34:43,165 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157614185] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:43,165 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:43,165 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:34:43,165 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474182213] [2021-11-19 13:34:43,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:43,165 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:34:43,165 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:43,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:34:43,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:34:43,166 INFO L87 Difference]: Start difference. First operand 676 states and 816 transitions. Second operand has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:45,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:45,253 INFO L93 Difference]: Finished difference Result 1887 states and 2355 transitions. [2021-11-19 13:34:45,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:34:45,254 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 11 states have internal predecessors, (121), 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 121 [2021-11-19 13:34:45,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:45,255 INFO L225 Difference]: With dead ends: 1887 [2021-11-19 13:34:45,255 INFO L226 Difference]: Without dead ends: 1636 [2021-11-19 13:34:45,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=110, Invalid=310, Unknown=0, NotChecked=0, Total=420 [2021-11-19 13:34:45,256 INFO L933 BasicCegarLoop]: 1122 mSDtfsCounter, 1759 mSDsluCounter, 5696 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1759 SdHoareTripleChecker+Valid, 6658 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:45,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1759 Valid, 6658 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:34:45,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2021-11-19 13:34:45,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 536. [2021-11-19 13:34:45,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 536 states, 525 states have (on average 1.220952380952381) internal successors, (641), 535 states have internal predecessors, (641), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:45,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 536 states to 536 states and 641 transitions. [2021-11-19 13:34:45,587 INFO L78 Accepts]: Start accepts. Automaton has 536 states and 641 transitions. Word has length 121 [2021-11-19 13:34:45,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:45,587 INFO L470 AbstractCegarLoop]: Abstraction has 536 states and 641 transitions. [2021-11-19 13:34:45,587 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.083333333333334) internal successors, (121), 11 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:45,588 INFO L276 IsEmpty]: Start isEmpty. Operand 536 states and 641 transitions. [2021-11-19 13:34:45,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-11-19 13:34:45,588 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:45,588 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:45,588 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-19 13:34:45,588 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:45,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:45,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1869995562, now seen corresponding path program 1 times [2021-11-19 13:34:45,589 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:45,589 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225859937] [2021-11-19 13:34:45,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:45,589 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:45,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:45,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:45,868 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225859937] [2021-11-19 13:34:45,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225859937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:45,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:45,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:34:45,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049212138] [2021-11-19 13:34:45,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:45,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:34:45,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:45,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:34:45,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:34:45,870 INFO L87 Difference]: Start difference. First operand 536 states and 641 transitions. Second operand has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:47,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:47,097 INFO L93 Difference]: Finished difference Result 970 states and 1177 transitions. [2021-11-19 13:34:47,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:34:47,097 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 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 121 [2021-11-19 13:34:47,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:47,098 INFO L225 Difference]: With dead ends: 970 [2021-11-19 13:34:47,098 INFO L226 Difference]: Without dead ends: 718 [2021-11-19 13:34:47,099 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=108, Invalid=234, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:34:47,099 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 1807 mSDsluCounter, 998 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1807 SdHoareTripleChecker+Valid, 1404 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:47,099 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1807 Valid, 1404 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:47,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 718 states. [2021-11-19 13:34:47,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 718 to 396. [2021-11-19 13:34:47,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 396 states, 390 states have (on average 1.2102564102564102) internal successors, (472), 395 states have internal predecessors, (472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:47,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 396 states to 396 states and 472 transitions. [2021-11-19 13:34:47,368 INFO L78 Accepts]: Start accepts. Automaton has 396 states and 472 transitions. Word has length 121 [2021-11-19 13:34:47,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:47,368 INFO L470 AbstractCegarLoop]: Abstraction has 396 states and 472 transitions. [2021-11-19 13:34:47,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.1) internal successors, (121), 9 states have internal predecessors, (121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:47,368 INFO L276 IsEmpty]: Start isEmpty. Operand 396 states and 472 transitions. [2021-11-19 13:34:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-19 13:34:47,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:47,369 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:47,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-19 13:34:47,369 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:47,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1373813729, now seen corresponding path program 1 times [2021-11-19 13:34:47,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:47,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399955254] [2021-11-19 13:34:47,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:47,370 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:47,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:47,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:47,701 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:47,702 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399955254] [2021-11-19 13:34:47,702 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399955254] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:47,702 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:47,702 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:34:47,702 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194567587] [2021-11-19 13:34:47,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:47,702 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:34:47,703 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:47,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:34:47,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:34:47,703 INFO L87 Difference]: Start difference. First operand 396 states and 472 transitions. Second operand has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:49,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:49,190 INFO L93 Difference]: Finished difference Result 1047 states and 1307 transitions. [2021-11-19 13:34:49,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:34:49,190 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 11 states have internal predecessors, (122), 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 122 [2021-11-19 13:34:49,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:49,191 INFO L225 Difference]: With dead ends: 1047 [2021-11-19 13:34:49,191 INFO L226 Difference]: Without dead ends: 873 [2021-11-19 13:34:49,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:34:49,192 INFO L933 BasicCegarLoop]: 545 mSDtfsCounter, 1141 mSDsluCounter, 2257 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 2706 SdHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:49,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1141 Valid, 2706 Invalid, 432 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:34:49,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 873 states. [2021-11-19 13:34:49,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 873 to 315. [2021-11-19 13:34:49,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 312 states have (on average 1.1923076923076923) internal successors, (372), 314 states have internal predecessors, (372), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:49,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 372 transitions. [2021-11-19 13:34:49,429 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 372 transitions. Word has length 122 [2021-11-19 13:34:49,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:49,429 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 372 transitions. [2021-11-19 13:34:49,429 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.166666666666666) internal successors, (122), 11 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:49,429 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 372 transitions. [2021-11-19 13:34:49,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-19 13:34:49,430 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:49,430 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:49,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-19 13:34:49,430 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:49,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:49,430 INFO L85 PathProgramCache]: Analyzing trace with hash 1431269891, now seen corresponding path program 1 times [2021-11-19 13:34:49,430 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:49,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526103948] [2021-11-19 13:34:49,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:49,431 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:49,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:49,549 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:49,549 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526103948] [2021-11-19 13:34:49,549 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526103948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:49,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:49,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:34:49,550 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [707801781] [2021-11-19 13:34:49,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:49,550 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:49,550 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:49,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:49,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:34:49,550 INFO L87 Difference]: Start difference. First operand 315 states and 372 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:50,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:50,339 INFO L93 Difference]: Finished difference Result 475 states and 572 transitions. [2021-11-19 13:34:50,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:34:50,340 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 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 123 [2021-11-19 13:34:50,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:50,340 INFO L225 Difference]: With dead ends: 475 [2021-11-19 13:34:50,340 INFO L226 Difference]: Without dead ends: 467 [2021-11-19 13:34:50,341 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:34:50,341 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 575 mSDsluCounter, 454 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 575 SdHoareTripleChecker+Valid, 606 SdHoareTripleChecker+Invalid, 437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:50,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [575 Valid, 606 Invalid, 437 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:34:50,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 467 states. [2021-11-19 13:34:50,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 467 to 315. [2021-11-19 13:34:50,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 312 states have (on average 1.189102564102564) internal successors, (371), 314 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:50,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 371 transitions. [2021-11-19 13:34:50,596 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 371 transitions. Word has length 123 [2021-11-19 13:34:50,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:50,596 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 371 transitions. [2021-11-19 13:34:50,596 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:50,596 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 371 transitions. [2021-11-19 13:34:50,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-11-19 13:34:50,597 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:50,597 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:50,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-19 13:34:50,597 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:50,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:50,598 INFO L85 PathProgramCache]: Analyzing trace with hash 875840387, now seen corresponding path program 1 times [2021-11-19 13:34:50,598 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:50,598 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284507191] [2021-11-19 13:34:50,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:50,598 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:50,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:50,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:50,719 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:50,719 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284507191] [2021-11-19 13:34:50,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284507191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:50,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:50,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:34:50,719 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [178542762] [2021-11-19 13:34:50,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:50,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:34:50,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:50,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:34:50,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:34:50,720 INFO L87 Difference]: Start difference. First operand 315 states and 371 transitions. Second operand has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:51,622 INFO L93 Difference]: Finished difference Result 640 states and 784 transitions. [2021-11-19 13:34:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:34:51,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 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 123 [2021-11-19 13:34:51,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:51,623 INFO L225 Difference]: With dead ends: 640 [2021-11-19 13:34:51,623 INFO L226 Difference]: Without dead ends: 494 [2021-11-19 13:34:51,624 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:34:51,624 INFO L933 BasicCegarLoop]: 207 mSDtfsCounter, 653 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 653 SdHoareTripleChecker+Valid, 747 SdHoareTripleChecker+Invalid, 584 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:51,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [653 Valid, 747 Invalid, 584 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:34:51,625 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 494 states. [2021-11-19 13:34:51,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 494 to 315. [2021-11-19 13:34:51,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 312 states have (on average 1.1826923076923077) internal successors, (369), 314 states have internal predecessors, (369), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:51,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 369 transitions. [2021-11-19 13:34:51,869 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 369 transitions. Word has length 123 [2021-11-19 13:34:51,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:51,869 INFO L470 AbstractCegarLoop]: Abstraction has 315 states and 369 transitions. [2021-11-19 13:34:51,869 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 15.375) internal successors, (123), 7 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:51,869 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 369 transitions. [2021-11-19 13:34:51,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-19 13:34:51,870 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:51,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:51,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-19 13:34:51,870 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr27ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:51,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:51,870 INFO L85 PathProgramCache]: Analyzing trace with hash -756360920, now seen corresponding path program 1 times [2021-11-19 13:34:51,871 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:51,871 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728143464] [2021-11-19 13:34:51,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:51,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:51,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:52,198 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:52,198 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:52,198 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728143464] [2021-11-19 13:34:52,198 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728143464] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:52,198 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:52,198 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-19 13:34:52,198 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121857759] [2021-11-19 13:34:52,198 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:52,199 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-19 13:34:52,199 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:52,199 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-19 13:34:52,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:34:52,199 INFO L87 Difference]: Start difference. First operand 315 states and 369 transitions. Second operand has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:55,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:34:55,093 INFO L93 Difference]: Finished difference Result 1198 states and 1509 transitions. [2021-11-19 13:34:55,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-19 13:34:55,093 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 12 states have internal predecessors, (125), 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 125 [2021-11-19 13:34:55,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:34:55,094 INFO L225 Difference]: With dead ends: 1198 [2021-11-19 13:34:55,094 INFO L226 Difference]: Without dead ends: 1192 [2021-11-19 13:34:55,095 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-19 13:34:55,095 INFO L933 BasicCegarLoop]: 473 mSDtfsCounter, 1183 mSDsluCounter, 3566 mSDsCounter, 0 mSdLazyCounter, 798 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1183 SdHoareTripleChecker+Valid, 3813 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:34:55,095 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1183 Valid, 3813 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 798 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:34:55,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1192 states. [2021-11-19 13:34:55,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1192 to 309. [2021-11-19 13:34:55,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 307 states have (on average 1.1791530944625408) internal successors, (362), 308 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:55,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 362 transitions. [2021-11-19 13:34:55,351 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 362 transitions. Word has length 125 [2021-11-19 13:34:55,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:34:55,352 INFO L470 AbstractCegarLoop]: Abstraction has 309 states and 362 transitions. [2021-11-19 13:34:55,352 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.615384615384615) internal successors, (125), 12 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:34:55,352 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 362 transitions. [2021-11-19 13:34:55,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-19 13:34:55,352 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:34:55,352 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:34:55,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-19 13:34:55,353 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:34:55,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:34:55,353 INFO L85 PathProgramCache]: Analyzing trace with hash -18243096, now seen corresponding path program 1 times [2021-11-19 13:34:55,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:34:55,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266866912] [2021-11-19 13:34:55,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:34:55,353 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:34:55,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:34:57,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:34:57,274 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:34:57,275 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266866912] [2021-11-19 13:34:57,275 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266866912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:34:57,275 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:34:57,275 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [37] imperfect sequences [] total 37 [2021-11-19 13:34:57,275 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076069086] [2021-11-19 13:34:57,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:34:57,275 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2021-11-19 13:34:57,275 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:34:57,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2021-11-19 13:34:57,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1269, Unknown=0, NotChecked=0, Total=1406 [2021-11-19 13:34:57,276 INFO L87 Difference]: Start difference. First operand 309 states and 362 transitions. Second operand has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:02,237 INFO L93 Difference]: Finished difference Result 379 states and 436 transitions. [2021-11-19 13:35:02,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-11-19 13:35:02,238 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 37 states have internal predecessors, (125), 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 125 [2021-11-19 13:35:02,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:02,238 INFO L225 Difference]: With dead ends: 379 [2021-11-19 13:35:02,238 INFO L226 Difference]: Without dead ends: 370 [2021-11-19 13:35:02,239 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 4.1s TimeCoverageRelationStatistics Valid=739, Invalid=4231, Unknown=0, NotChecked=0, Total=4970 [2021-11-19 13:35:02,239 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 1242 mSDsluCounter, 3284 mSDsCounter, 0 mSdLazyCounter, 2514 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 2577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:02,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 3359 Invalid, 2577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 2514 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2021-11-19 13:35:02,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-19 13:35:02,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 337. [2021-11-19 13:35:02,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 335 states have (on average 1.1791044776119404) internal successors, (395), 336 states have internal predecessors, (395), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 395 transitions. [2021-11-19 13:35:02,516 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 395 transitions. Word has length 125 [2021-11-19 13:35:02,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:02,516 INFO L470 AbstractCegarLoop]: Abstraction has 337 states and 395 transitions. [2021-11-19 13:35:02,517 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 3.289473684210526) internal successors, (125), 37 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:02,517 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 395 transitions. [2021-11-19 13:35:02,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-19 13:35:02,517 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:02,517 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:02,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-19 13:35:02,517 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:02,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:02,518 INFO L85 PathProgramCache]: Analyzing trace with hash 68856123, now seen corresponding path program 1 times [2021-11-19 13:35:02,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:02,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809077404] [2021-11-19 13:35:02,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:02,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:02,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:03,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:03,037 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:03,037 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809077404] [2021-11-19 13:35:03,037 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809077404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:03,037 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:03,037 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2021-11-19 13:35:03,037 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284370972] [2021-11-19 13:35:03,037 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:03,038 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-11-19 13:35:03,038 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:03,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-11-19 13:35:03,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2021-11-19 13:35:03,038 INFO L87 Difference]: Start difference. First operand 337 states and 395 transitions. Second operand has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:06,460 INFO L93 Difference]: Finished difference Result 920 states and 1133 transitions. [2021-11-19 13:35:06,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-19 13:35:06,460 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 16 states have internal predecessors, (126), 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 126 [2021-11-19 13:35:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:06,461 INFO L225 Difference]: With dead ends: 920 [2021-11-19 13:35:06,462 INFO L226 Difference]: Without dead ends: 907 [2021-11-19 13:35:06,462 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=279, Invalid=1053, Unknown=0, NotChecked=0, Total=1332 [2021-11-19 13:35:06,462 INFO L933 BasicCegarLoop]: 370 mSDtfsCounter, 1254 mSDsluCounter, 3912 mSDsCounter, 0 mSdLazyCounter, 1192 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1254 SdHoareTripleChecker+Valid, 4083 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:06,462 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1254 Valid, 4083 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1192 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-19 13:35:06,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 907 states. [2021-11-19 13:35:06,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 907 to 333. [2021-11-19 13:35:06,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 331 states have (on average 1.1752265861027191) internal successors, (389), 332 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:06,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 389 transitions. [2021-11-19 13:35:06,773 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 389 transitions. Word has length 126 [2021-11-19 13:35:06,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:06,773 INFO L470 AbstractCegarLoop]: Abstraction has 333 states and 389 transitions. [2021-11-19 13:35:06,773 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 7.411764705882353) internal successors, (126), 16 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:06,773 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 389 transitions. [2021-11-19 13:35:06,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-19 13:35:06,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:06,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:06,774 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-19 13:35:06,774 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:06,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:06,774 INFO L85 PathProgramCache]: Analyzing trace with hash 653818872, now seen corresponding path program 1 times [2021-11-19 13:35:06,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:06,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1164339282] [2021-11-19 13:35:06,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:06,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:06,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:07,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:07,128 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:07,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1164339282] [2021-11-19 13:35:07,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1164339282] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:07,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:07,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:35:07,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304508056] [2021-11-19 13:35:07,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:07,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:35:07,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:07,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:35:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:35:07,129 INFO L87 Difference]: Start difference. First operand 333 states and 389 transitions. Second operand has 12 states, 12 states have (on average 10.5) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:09,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:09,170 INFO L93 Difference]: Finished difference Result 773 states and 953 transitions. [2021-11-19 13:35:09,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:35:09,171 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 10.5) internal successors, (126), 11 states have internal predecessors, (126), 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 126 [2021-11-19 13:35:09,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:09,172 INFO L225 Difference]: With dead ends: 773 [2021-11-19 13:35:09,172 INFO L226 Difference]: Without dead ends: 761 [2021-11-19 13:35:09,173 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-19 13:35:09,173 INFO L933 BasicCegarLoop]: 433 mSDtfsCounter, 1132 mSDsluCounter, 1635 mSDsCounter, 0 mSdLazyCounter, 375 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 1984 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 375 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:09,173 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1132 Valid, 1984 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 375 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:35:09,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2021-11-19 13:35:09,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 296. [2021-11-19 13:35:09,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 296 states, 295 states have (on average 1.176271186440678) internal successors, (347), 295 states have internal predecessors, (347), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:09,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 296 states to 296 states and 347 transitions. [2021-11-19 13:35:09,499 INFO L78 Accepts]: Start accepts. Automaton has 296 states and 347 transitions. Word has length 126 [2021-11-19 13:35:09,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:09,499 INFO L470 AbstractCegarLoop]: Abstraction has 296 states and 347 transitions. [2021-11-19 13:35:09,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 10.5) internal successors, (126), 11 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:09,500 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states and 347 transitions. [2021-11-19 13:35:09,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2021-11-19 13:35:09,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:09,500 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:09,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-19 13:35:09,501 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:09,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:09,501 INFO L85 PathProgramCache]: Analyzing trace with hash 761741703, now seen corresponding path program 1 times [2021-11-19 13:35:09,501 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:09,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911646660] [2021-11-19 13:35:09,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:09,502 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:09,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:09,597 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:09,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911646660] [2021-11-19 13:35:09,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911646660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:09,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:09,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:09,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484194490] [2021-11-19 13:35:09,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:09,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:09,599 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:09,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:09,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:09,600 INFO L87 Difference]: Start difference. First operand 296 states and 347 transitions. Second operand has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:10,107 INFO L93 Difference]: Finished difference Result 417 states and 506 transitions. [2021-11-19 13:35:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:10,107 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 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 149 [2021-11-19 13:35:10,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:10,108 INFO L225 Difference]: With dead ends: 417 [2021-11-19 13:35:10,108 INFO L226 Difference]: Without dead ends: 360 [2021-11-19 13:35:10,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:10,109 INFO L933 BasicCegarLoop]: 265 mSDtfsCounter, 86 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:10,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 410 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2021-11-19 13:35:10,550 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 350. [2021-11-19 13:35:10,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 349 states have (on average 1.1948424068767909) internal successors, (417), 349 states have internal predecessors, (417), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 417 transitions. [2021-11-19 13:35:10,552 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 417 transitions. Word has length 149 [2021-11-19 13:35:10,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:10,552 INFO L470 AbstractCegarLoop]: Abstraction has 350 states and 417 transitions. [2021-11-19 13:35:10,552 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 49.666666666666664) internal successors, (149), 3 states have internal predecessors, (149), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:10,552 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 417 transitions. [2021-11-19 13:35:10,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2021-11-19 13:35:10,553 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:10,553 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:10,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-19 13:35:10,554 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:10,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:10,554 INFO L85 PathProgramCache]: Analyzing trace with hash -1435394043, now seen corresponding path program 1 times [2021-11-19 13:35:10,555 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:10,555 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807778358] [2021-11-19 13:35:10,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:10,555 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:10,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:10,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:10,661 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:10,661 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807778358] [2021-11-19 13:35:10,662 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807778358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:10,662 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:10,662 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:10,662 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963541218] [2021-11-19 13:35:10,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:10,663 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:10,663 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:10,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:10,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:10,664 INFO L87 Difference]: Start difference. First operand 350 states and 417 transitions. Second operand has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:11,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:11,724 INFO L93 Difference]: Finished difference Result 676 states and 847 transitions. [2021-11-19 13:35:11,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:11,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 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 152 [2021-11-19 13:35:11,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:11,726 INFO L225 Difference]: With dead ends: 676 [2021-11-19 13:35:11,726 INFO L226 Difference]: Without dead ends: 513 [2021-11-19 13:35:11,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:11,727 INFO L933 BasicCegarLoop]: 258 mSDtfsCounter, 79 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:11,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 411 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:11,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2021-11-19 13:35:12,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 499. [2021-11-19 13:35:12,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 499 states, 498 states have (on average 1.2309236947791165) internal successors, (613), 498 states have internal predecessors, (613), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 499 states to 499 states and 613 transitions. [2021-11-19 13:35:12,488 INFO L78 Accepts]: Start accepts. Automaton has 499 states and 613 transitions. Word has length 152 [2021-11-19 13:35:12,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:12,488 INFO L470 AbstractCegarLoop]: Abstraction has 499 states and 613 transitions. [2021-11-19 13:35:12,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 50.666666666666664) internal successors, (152), 3 states have internal predecessors, (152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:12,489 INFO L276 IsEmpty]: Start isEmpty. Operand 499 states and 613 transitions. [2021-11-19 13:35:12,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2021-11-19 13:35:12,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:12,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:12,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-19 13:35:12,490 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:12,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:12,490 INFO L85 PathProgramCache]: Analyzing trace with hash 102295120, now seen corresponding path program 1 times [2021-11-19 13:35:12,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:12,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2121471691] [2021-11-19 13:35:12,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:12,491 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:12,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:12,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:12,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:12,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2121471691] [2021-11-19 13:35:12,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2121471691] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:12,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:12,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:12,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256687585] [2021-11-19 13:35:12,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:12,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:12,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:12,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:12,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:12,580 INFO L87 Difference]: Start difference. First operand 499 states and 613 transitions. Second operand has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:13,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:13,963 INFO L93 Difference]: Finished difference Result 1123 states and 1435 transitions. [2021-11-19 13:35:13,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:13,964 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 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 155 [2021-11-19 13:35:13,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:13,965 INFO L225 Difference]: With dead ends: 1123 [2021-11-19 13:35:13,965 INFO L226 Difference]: Without dead ends: 811 [2021-11-19 13:35:13,965 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:13,966 INFO L933 BasicCegarLoop]: 251 mSDtfsCounter, 72 mSDsluCounter, 168 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 412 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:13,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 412 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:13,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2021-11-19 13:35:15,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 785. [2021-11-19 13:35:15,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 784 states have (on average 1.2589285714285714) internal successors, (987), 784 states have internal predecessors, (987), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:15,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 987 transitions. [2021-11-19 13:35:15,464 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 987 transitions. Word has length 155 [2021-11-19 13:35:15,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:15,464 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 987 transitions. [2021-11-19 13:35:15,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.666666666666664) internal successors, (155), 3 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:15,464 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 987 transitions. [2021-11-19 13:35:15,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2021-11-19 13:35:15,465 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:15,465 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:15,465 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-19 13:35:15,466 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:15,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:15,466 INFO L85 PathProgramCache]: Analyzing trace with hash 507100104, now seen corresponding path program 1 times [2021-11-19 13:35:15,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:15,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480111144] [2021-11-19 13:35:15,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:15,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:15,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:15,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:15,589 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:15,589 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480111144] [2021-11-19 13:35:15,590 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480111144] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:15,590 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:15,590 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:15,590 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077077789] [2021-11-19 13:35:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:15,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:15,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:15,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:15,592 INFO L87 Difference]: Start difference. First operand 785 states and 987 transitions. Second operand has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:18,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:18,373 INFO L93 Difference]: Finished difference Result 1981 states and 2557 transitions. [2021-11-19 13:35:18,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:18,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 158 [2021-11-19 13:35:18,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:18,375 INFO L225 Difference]: With dead ends: 1981 [2021-11-19 13:35:18,375 INFO L226 Difference]: Without dead ends: 1383 [2021-11-19 13:35:18,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:18,377 INFO L933 BasicCegarLoop]: 244 mSDtfsCounter, 65 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:18,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [65 Valid, 413 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:35:18,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1383 states. [2021-11-19 13:35:21,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1383 to 1333. [2021-11-19 13:35:21,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1333 states, 1332 states have (on average 1.2755255255255256) internal successors, (1699), 1332 states have internal predecessors, (1699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:21,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1333 states to 1333 states and 1699 transitions. [2021-11-19 13:35:21,102 INFO L78 Accepts]: Start accepts. Automaton has 1333 states and 1699 transitions. Word has length 158 [2021-11-19 13:35:21,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:21,103 INFO L470 AbstractCegarLoop]: Abstraction has 1333 states and 1699 transitions. [2021-11-19 13:35:21,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.666666666666664) internal successors, (158), 3 states have internal predecessors, (158), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:21,103 INFO L276 IsEmpty]: Start isEmpty. Operand 1333 states and 1699 transitions. [2021-11-19 13:35:21,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2021-11-19 13:35:21,104 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:21,104 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:21,105 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-19 13:35:21,105 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:21,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:21,105 INFO L85 PathProgramCache]: Analyzing trace with hash -923206139, now seen corresponding path program 1 times [2021-11-19 13:35:21,106 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:21,106 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688475245] [2021-11-19 13:35:21,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:21,106 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:21,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:21,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:21,187 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:21,187 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1688475245] [2021-11-19 13:35:21,187 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1688475245] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:21,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:21,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:21,188 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [995569193] [2021-11-19 13:35:21,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:21,188 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:21,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:21,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:21,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:21,188 INFO L87 Difference]: Start difference. First operand 1333 states and 1699 transitions. Second operand has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:26,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:26,097 INFO L93 Difference]: Finished difference Result 3625 states and 4693 transitions. [2021-11-19 13:35:26,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:26,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 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 161 [2021-11-19 13:35:26,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:26,100 INFO L225 Difference]: With dead ends: 3625 [2021-11-19 13:35:26,100 INFO L226 Difference]: Without dead ends: 2479 [2021-11-19 13:35:26,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:26,102 INFO L933 BasicCegarLoop]: 237 mSDtfsCounter, 58 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:26,102 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 414 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:26,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2479 states. [2021-11-19 13:35:30,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2479 to 2381. [2021-11-19 13:35:30,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2381 states, 2380 states have (on average 1.2819327731092438) internal successors, (3051), 2380 states have internal predecessors, (3051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2381 states to 2381 states and 3051 transitions. [2021-11-19 13:35:30,608 INFO L78 Accepts]: Start accepts. Automaton has 2381 states and 3051 transitions. Word has length 161 [2021-11-19 13:35:30,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:30,609 INFO L470 AbstractCegarLoop]: Abstraction has 2381 states and 3051 transitions. [2021-11-19 13:35:30,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 53.666666666666664) internal successors, (161), 3 states have internal predecessors, (161), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:30,609 INFO L276 IsEmpty]: Start isEmpty. Operand 2381 states and 3051 transitions. [2021-11-19 13:35:30,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-11-19 13:35:30,610 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:30,610 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:30,610 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-19 13:35:30,610 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:30,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:30,610 INFO L85 PathProgramCache]: Analyzing trace with hash 1834312951, now seen corresponding path program 1 times [2021-11-19 13:35:30,611 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:30,611 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6463744] [2021-11-19 13:35:30,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:30,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:30,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:30,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:30,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:30,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6463744] [2021-11-19 13:35:30,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6463744] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:30,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:30,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:30,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980523221] [2021-11-19 13:35:30,712 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:30,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:30,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:30,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:30,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:30,713 INFO L87 Difference]: Start difference. First operand 2381 states and 3051 transitions. Second operand has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:39,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:35:39,580 INFO L93 Difference]: Finished difference Result 6769 states and 8749 transitions. [2021-11-19 13:35:39,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:35:39,580 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 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 164 [2021-11-19 13:35:39,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:35:39,584 INFO L225 Difference]: With dead ends: 6769 [2021-11-19 13:35:39,584 INFO L226 Difference]: Without dead ends: 4575 [2021-11-19 13:35:39,587 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:39,587 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 51 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:35:39,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 415 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:35:39,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4575 states. [2021-11-19 13:35:47,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4575 to 4381. [2021-11-19 13:35:47,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4381 states, 4380 states have (on average 1.2810502283105023) internal successors, (5611), 4380 states have internal predecessors, (5611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4381 states to 4381 states and 5611 transitions. [2021-11-19 13:35:48,000 INFO L78 Accepts]: Start accepts. Automaton has 4381 states and 5611 transitions. Word has length 164 [2021-11-19 13:35:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:35:48,000 INFO L470 AbstractCegarLoop]: Abstraction has 4381 states and 5611 transitions. [2021-11-19 13:35:48,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 54.666666666666664) internal successors, (164), 3 states have internal predecessors, (164), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:35:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 4381 states and 5611 transitions. [2021-11-19 13:35:48,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2021-11-19 13:35:48,001 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:35:48,001 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:35:48,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-19 13:35:48,001 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:35:48,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:35:48,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1951979049, now seen corresponding path program 1 times [2021-11-19 13:35:48,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:35:48,002 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633362841] [2021-11-19 13:35:48,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:35:48,002 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:35:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:35:48,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:35:48,081 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:35:48,081 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633362841] [2021-11-19 13:35:48,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633362841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:35:48,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:35:48,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:35:48,082 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [146140] [2021-11-19 13:35:48,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:35:48,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:35:48,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:35:48,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:35:48,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:35:48,083 INFO L87 Difference]: Start difference. First operand 4381 states and 5611 transitions. Second operand has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:36:04,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:36:04,692 INFO L93 Difference]: Finished difference Result 12769 states and 16429 transitions. [2021-11-19 13:36:04,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:36:04,693 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 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 167 [2021-11-19 13:36:04,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:36:04,702 INFO L225 Difference]: With dead ends: 12769 [2021-11-19 13:36:04,702 INFO L226 Difference]: Without dead ends: 8575 [2021-11-19 13:36:04,707 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:36:04,707 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 40 mSDsluCounter, 200 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 13:36:04,707 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 415 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 13:36:04,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8575 states. [2021-11-19 13:36:20,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8575 to 8189. [2021-11-19 13:36:20,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8189 states, 8188 states have (on average 1.2754030288226674) internal successors, (10443), 8188 states have internal predecessors, (10443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:36:20,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8189 states to 8189 states and 10443 transitions. [2021-11-19 13:36:20,987 INFO L78 Accepts]: Start accepts. Automaton has 8189 states and 10443 transitions. Word has length 167 [2021-11-19 13:36:20,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:36:20,987 INFO L470 AbstractCegarLoop]: Abstraction has 8189 states and 10443 transitions. [2021-11-19 13:36:20,987 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 55.666666666666664) internal successors, (167), 3 states have internal predecessors, (167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:36:20,987 INFO L276 IsEmpty]: Start isEmpty. Operand 8189 states and 10443 transitions. [2021-11-19 13:36:20,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2021-11-19 13:36:20,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:36:20,988 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:36:20,988 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-19 13:36:20,989 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:36:20,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:36:20,989 INFO L85 PathProgramCache]: Analyzing trace with hash 568446086, now seen corresponding path program 1 times [2021-11-19 13:36:20,989 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:36:20,989 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889767071] [2021-11-19 13:36:20,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:36:20,990 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:36:21,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:36:21,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:36:21,104 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:36:21,104 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889767071] [2021-11-19 13:36:21,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889767071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:36:21,104 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:36:21,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:36:21,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [200933578] [2021-11-19 13:36:21,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:36:21,105 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:36:21,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:36:21,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:36:21,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:36:21,105 INFO L87 Difference]: Start difference. First operand 8189 states and 10443 transitions. Second operand has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:37:09,645 INFO L93 Difference]: Finished difference Result 33020 states and 42424 transitions. [2021-11-19 13:37:09,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 13:37:09,646 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 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 170 [2021-11-19 13:37:09,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:37:09,687 INFO L225 Difference]: With dead ends: 33020 [2021-11-19 13:37:09,687 INFO L226 Difference]: Without dead ends: 25018 [2021-11-19 13:37:09,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2021-11-19 13:37:09,700 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 1651 mSDsluCounter, 3220 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1651 SdHoareTripleChecker+Valid, 3365 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:37:09,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1651 Valid, 3365 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:37:09,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25018 states. [2021-11-19 13:37:36,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25018 to 11261. [2021-11-19 13:37:36,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11261 states, 11260 states have (on average 1.2684724689165185) internal successors, (14283), 11260 states have internal predecessors, (14283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:36,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11261 states to 11261 states and 14283 transitions. [2021-11-19 13:37:36,878 INFO L78 Accepts]: Start accepts. Automaton has 11261 states and 14283 transitions. Word has length 170 [2021-11-19 13:37:36,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:37:36,879 INFO L470 AbstractCegarLoop]: Abstraction has 11261 states and 14283 transitions. [2021-11-19 13:37:36,879 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 18.88888888888889) internal successors, (170), 9 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:37:36,879 INFO L276 IsEmpty]: Start isEmpty. Operand 11261 states and 14283 transitions. [2021-11-19 13:37:36,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 13:37:36,880 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:37:36,880 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:37:36,880 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-19 13:37:36,880 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:37:36,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:37:36,880 INFO L85 PathProgramCache]: Analyzing trace with hash -1805355554, now seen corresponding path program 1 times [2021-11-19 13:37:36,881 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:37:36,881 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825810241] [2021-11-19 13:37:36,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:37:36,881 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:37:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:37:37,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:37:37,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:37:37,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825810241] [2021-11-19 13:37:37,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825810241] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:37:37,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:37:37,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:37:37,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234395997] [2021-11-19 13:37:37,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:37:37,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:37:37,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:37:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:37:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:37:37,129 INFO L87 Difference]: Start difference. First operand 11261 states and 14283 transitions. Second operand has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:02,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:38:02,647 INFO L93 Difference]: Finished difference Result 22337 states and 28365 transitions. [2021-11-19 13:38:02,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:38:02,648 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 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 172 [2021-11-19 13:38:02,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:38:02,660 INFO L225 Difference]: With dead ends: 22337 [2021-11-19 13:38:02,660 INFO L226 Difference]: Without dead ends: 11263 [2021-11-19 13:38:02,669 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=116, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:38:02,669 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 1146 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 634 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:38:02,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1146 Valid, 634 Invalid, 157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:38:02,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11263 states. [2021-11-19 13:38:27,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11263 to 11261. [2021-11-19 13:38:27,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11261 states, 11260 states have (on average 1.2682948490230905) internal successors, (14281), 11260 states have internal predecessors, (14281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:27,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11261 states to 11261 states and 14281 transitions. [2021-11-19 13:38:27,953 INFO L78 Accepts]: Start accepts. Automaton has 11261 states and 14281 transitions. Word has length 172 [2021-11-19 13:38:27,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:38:27,954 INFO L470 AbstractCegarLoop]: Abstraction has 11261 states and 14281 transitions. [2021-11-19 13:38:27,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 19.11111111111111) internal successors, (172), 9 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:38:27,954 INFO L276 IsEmpty]: Start isEmpty. Operand 11261 states and 14281 transitions. [2021-11-19 13:38:27,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2021-11-19 13:38:27,955 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:38:27,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:38:27,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-19 13:38:27,955 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:38:27,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:38:27,956 INFO L85 PathProgramCache]: Analyzing trace with hash 857155489, now seen corresponding path program 1 times [2021-11-19 13:38:27,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:38:27,956 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262322888] [2021-11-19 13:38:27,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:38:27,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:38:28,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:38:28,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:38:28,067 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:38:28,067 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262322888] [2021-11-19 13:38:28,067 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262322888] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:38:28,067 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:38:28,067 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:38:28,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550259415] [2021-11-19 13:38:28,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:38:28,068 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:38:28,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:38:28,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:38:28,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:38:28,070 INFO L87 Difference]: Start difference. First operand 11261 states and 14281 transitions. Second operand has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:02,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:39:02,776 INFO L93 Difference]: Finished difference Result 25345 states and 32201 transitions. [2021-11-19 13:39:02,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:39:02,777 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 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 172 [2021-11-19 13:39:02,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:39:02,797 INFO L225 Difference]: With dead ends: 25345 [2021-11-19 13:39:02,797 INFO L226 Difference]: Without dead ends: 14271 [2021-11-19 13:39:02,808 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:39:02,808 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 110 mSDsluCounter, 126 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 324 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:39:02,809 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 324 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:39:02,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14271 states. [2021-11-19 13:39:38,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14271 to 14269. [2021-11-19 13:39:38,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14269 states, 14268 states have (on average 1.2609335576114382) internal successors, (17991), 14268 states have internal predecessors, (17991), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:38,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14269 states to 14269 states and 17991 transitions. [2021-11-19 13:39:38,177 INFO L78 Accepts]: Start accepts. Automaton has 14269 states and 17991 transitions. Word has length 172 [2021-11-19 13:39:38,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:39:38,177 INFO L470 AbstractCegarLoop]: Abstraction has 14269 states and 17991 transitions. [2021-11-19 13:39:38,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.333333333333336) internal successors, (172), 3 states have internal predecessors, (172), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:39:38,177 INFO L276 IsEmpty]: Start isEmpty. Operand 14269 states and 17991 transitions. [2021-11-19 13:39:38,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-11-19 13:39:38,178 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:39:38,178 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:39:38,178 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-19 13:39:38,178 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:39:38,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:39:38,179 INFO L85 PathProgramCache]: Analyzing trace with hash 2143084327, now seen corresponding path program 1 times [2021-11-19 13:39:38,179 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:39:38,179 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223738962] [2021-11-19 13:39:38,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:39:38,179 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:39:38,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:39:38,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:39:38,350 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:39:38,351 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223738962] [2021-11-19 13:39:38,351 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223738962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:39:38,351 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:39:38,351 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:39:38,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [357048495] [2021-11-19 13:39:38,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:39:38,352 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:39:38,352 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:39:38,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:39:38,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:39:38,353 INFO L87 Difference]: Start difference. First operand 14269 states and 17991 transitions. Second operand has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:40:28,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:40:28,630 INFO L93 Difference]: Finished difference Result 20450 states and 25529 transitions. [2021-11-19 13:40:28,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:40:28,631 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 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 173 [2021-11-19 13:40:28,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:40:28,660 INFO L225 Difference]: With dead ends: 20450 [2021-11-19 13:40:28,661 INFO L226 Difference]: Without dead ends: 20448 [2021-11-19 13:40:28,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:40:28,666 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 453 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 453 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 169 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:40:28,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [453 Valid, 1342 Invalid, 169 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 157 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:40:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20448 states. [2021-11-19 13:41:05,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20448 to 14269. [2021-11-19 13:41:05,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14269 states, 14268 states have (on average 1.2474768713204374) internal successors, (17799), 14268 states have internal predecessors, (17799), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:05,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14269 states to 14269 states and 17799 transitions. [2021-11-19 13:41:05,082 INFO L78 Accepts]: Start accepts. Automaton has 14269 states and 17799 transitions. Word has length 173 [2021-11-19 13:41:05,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:41:05,083 INFO L470 AbstractCegarLoop]: Abstraction has 14269 states and 17799 transitions. [2021-11-19 13:41:05,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.714285714285715) internal successors, (173), 7 states have internal predecessors, (173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:41:05,083 INFO L276 IsEmpty]: Start isEmpty. Operand 14269 states and 17799 transitions. [2021-11-19 13:41:05,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 198 [2021-11-19 13:41:05,085 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:41:05,085 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:41:05,085 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-19 13:41:05,086 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:41:05,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:41:05,086 INFO L85 PathProgramCache]: Analyzing trace with hash 66863863, now seen corresponding path program 1 times [2021-11-19 13:41:05,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:41:05,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251316619] [2021-11-19 13:41:05,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:41:05,087 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:41:05,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:41:05,311 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:41:05,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:41:05,312 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251316619] [2021-11-19 13:41:05,312 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251316619] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:41:05,312 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:41:05,312 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:41:05,312 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478217878] [2021-11-19 13:41:05,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:41:05,313 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:41:05,313 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:41:05,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:41:05,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:41:05,314 INFO L87 Difference]: Start difference. First operand 14269 states and 17799 transitions. Second operand has 8 states, 8 states have (on average 22.875) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:02,248 INFO L93 Difference]: Finished difference Result 36050 states and 45001 transitions. [2021-11-19 13:42:02,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:42:02,248 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 7 states have internal predecessors, (183), 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 197 [2021-11-19 13:42:02,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:02,284 INFO L225 Difference]: With dead ends: 36050 [2021-11-19 13:42:02,284 INFO L226 Difference]: Without dead ends: 21951 [2021-11-19 13:42:02,296 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-19 13:42:02,296 INFO L933 BasicCegarLoop]: 171 mSDtfsCounter, 720 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 562 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:02,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [720 Valid, 562 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:42:02,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21951 states. [2021-11-19 13:42:34,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21951 to 14269. [2021-11-19 13:42:34,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14269 states, 14268 states have (on average 1.247336697504906) internal successors, (17797), 14268 states have internal predecessors, (17797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:35,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14269 states to 14269 states and 17797 transitions. [2021-11-19 13:42:35,010 INFO L78 Accepts]: Start accepts. Automaton has 14269 states and 17797 transitions. Word has length 197 [2021-11-19 13:42:35,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:35,010 INFO L470 AbstractCegarLoop]: Abstraction has 14269 states and 17797 transitions. [2021-11-19 13:42:35,010 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 22.875) internal successors, (183), 7 states have internal predecessors, (183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:35,011 INFO L276 IsEmpty]: Start isEmpty. Operand 14269 states and 17797 transitions. [2021-11-19 13:42:35,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2021-11-19 13:42:35,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:35,013 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:35,013 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-19 13:42:35,013 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr22ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 26 more)] === [2021-11-19 13:42:35,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:35,014 INFO L85 PathProgramCache]: Analyzing trace with hash -253256196, now seen corresponding path program 1 times [2021-11-19 13:42:35,014 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:35,014 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [879973745] [2021-11-19 13:42:35,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:35,014 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:36,893 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-11-19 13:42:36,893 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:36,893 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [879973745] [2021-11-19 13:42:36,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [879973745] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:36,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:36,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [36] imperfect sequences [] total 36 [2021-11-19 13:42:36,894 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20717764] [2021-11-19 13:42:36,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:36,894 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-11-19 13:42:36,894 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:36,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-11-19 13:42:36,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=1183, Unknown=0, NotChecked=0, Total=1260 [2021-11-19 13:42:36,895 INFO L87 Difference]: Start difference. First operand 14269 states and 17797 transitions. Second operand has 36 states, 36 states have (on average 5.138888888888889) internal successors, (185), 36 states have internal predecessors, (185), 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)