./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dc718442bb91da0bdb0fa6a159b603baccf5b9195c06341082ea90462d0b755 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 01:35:39,105 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 01:35:39,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 01:35:39,140 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 01:35:39,141 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 01:35:39,142 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 01:35:39,144 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 01:35:39,146 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 01:35:39,148 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 01:35:39,150 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 01:35:39,151 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 01:35:39,152 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 01:35:39,153 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 01:35:39,154 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 01:35:39,156 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 01:35:39,158 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 01:35:39,159 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 01:35:39,160 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 01:35:39,162 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 01:35:39,165 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 01:35:39,167 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 01:35:39,169 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 01:35:39,170 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 01:35:39,171 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 01:35:39,175 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 01:35:39,176 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 01:35:39,176 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 01:35:39,177 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 01:35:39,178 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 01:35:39,179 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 01:35:39,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 01:35:39,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 01:35:39,181 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 01:35:39,182 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 01:35:39,184 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 01:35:39,184 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 01:35:39,185 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 01:35:39,185 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 01:35:39,186 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 01:35:39,190 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 01:35:39,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 01:35:39,195 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-13 01:35:39,232 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 01:35:39,233 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 01:35:39,235 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-13 01:35:39,235 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-13 01:35:39,235 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-13 01:35:39,236 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-13 01:35:39,236 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-13 01:35:39,236 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-13 01:35:39,242 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-13 01:35:39,243 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-13 01:35:39,244 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-13 01:35:39,244 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-13 01:35:39,244 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-13 01:35:39,244 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-13 01:35:39,245 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-13 01:35:39,245 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-13 01:35:39,246 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 01:35:39,246 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 01:35:39,246 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 01:35:39,247 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 01:35:39,247 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 01:35:39,247 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-13 01:35:39,247 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-13 01:35:39,247 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-13 01:35:39,248 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-13 01:35:39,248 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 01:35:39,248 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 01:35:39,248 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 01:35:39,249 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-13 01:35:39,249 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 01:35:39,249 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-13 01:35:39,249 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:35:39,250 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 01:35:39,250 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-13 01:35:39,250 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-13 01:35:39,250 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-13 01:35:39,251 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-13 01:35:39,251 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-13 01:35:39,251 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 01:35:39,251 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-13 01:35:39,251 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_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dc718442bb91da0bdb0fa6a159b603baccf5b9195c06341082ea90462d0b755 [2021-11-13 01:35:39,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 01:35:39,602 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 01:35:39,605 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 01:35:39,606 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 01:35:39,607 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 01:35:39,608 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-13 01:35:39,697 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/data/5232bc973/9d3dbb5112c64ac8aa0c26d1d0ff68da/FLAGdfbdf1d33 [2021-11-13 01:35:40,669 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 01:35:40,670 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-13 01:35:40,728 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/data/5232bc973/9d3dbb5112c64ac8aa0c26d1d0ff68da/FLAGdfbdf1d33 [2021-11-13 01:35:41,120 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/data/5232bc973/9d3dbb5112c64ac8aa0c26d1d0ff68da [2021-11-13 01:35:41,123 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 01:35:41,125 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 01:35:41,127 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 01:35:41,128 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 01:35:41,131 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 01:35:41,132 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:35:41" (1/1) ... [2021-11-13 01:35:41,134 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@386bc0ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:41, skipping insertion in model container [2021-11-13 01:35:41,134 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 01:35:41" (1/1) ... [2021-11-13 01:35:41,143 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 01:35:41,420 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 01:35:42,015 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26861,26874] [2021-11-13 01:35:42,062 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33212,33225] [2021-11-13 01:35:42,202 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57844,57857] [2021-11-13 01:35:42,245 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65899,65912] [2021-11-13 01:35:42,285 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71726,71739] [2021-11-13 01:35:42,348 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82469,82482] [2021-11-13 01:35:42,385 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90414,90427] [2021-11-13 01:35:42,418 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97642,97655] [2021-11-13 01:35:42,564 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132349,132362] [2021-11-13 01:35:42,574 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[135477,135490] [2021-11-13 01:35:42,597 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[143490,143503] [2021-11-13 01:35:42,624 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[149294,149307] [2021-11-13 01:35:42,796 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[172040,172053] [2021-11-13 01:35:42,882 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199876,199889] [2021-11-13 01:35:42,950 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226429,226442] [2021-11-13 01:35:43,018 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[253730,253743] [2021-11-13 01:35:43,094 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[284837,284850] [2021-11-13 01:35:43,391 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:35:43,410 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 01:35:43,582 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[26861,26874] [2021-11-13 01:35:43,600 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[33212,33225] [2021-11-13 01:35:43,658 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[57844,57857] [2021-11-13 01:35:43,678 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[65899,65912] [2021-11-13 01:35:43,694 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[71726,71739] [2021-11-13 01:35:43,722 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[82469,82482] [2021-11-13 01:35:43,745 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[90414,90427] [2021-11-13 01:35:43,775 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[97642,97655] [2021-11-13 01:35:43,855 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[132349,132362] [2021-11-13 01:35:43,864 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[135477,135490] [2021-11-13 01:35:43,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[143490,143503] [2021-11-13 01:35:43,898 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[149294,149307] [2021-11-13 01:35:43,948 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[172040,172053] [2021-11-13 01:35:44,007 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[199876,199889] [2021-11-13 01:35:44,087 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[226429,226442] [2021-11-13 01:35:44,161 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[253730,253743] [2021-11-13 01:35:44,222 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c[284837,284850] [2021-11-13 01:35:44,441 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 01:35:44,487 INFO L208 MainTranslator]: Completed translation [2021-11-13 01:35:44,487 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44 WrapperNode [2021-11-13 01:35:44,487 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 01:35:44,489 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 01:35:44,489 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 01:35:44,489 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 01:35:44,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:44,603 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:44,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 01:35:44,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 01:35:44,893 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 01:35:44,893 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 01:35:44,902 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:44,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:44,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:44,959 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:45,159 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:45,222 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:45,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:45,293 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 01:35:45,295 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 01:35:45,295 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 01:35:45,295 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 01:35:45,296 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (1/1) ... [2021-11-13 01:35:45,305 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-13 01:35:45,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/z3 [2021-11-13 01:35:45,338 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-13 01:35:45,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_06032a80-5fea-4749-9dd2-38b21646e072/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-13 01:35:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 01:35:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 01:35:45,382 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 01:35:45,382 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 01:35:54,991 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 01:35:54,992 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-13 01:35:54,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:35:54 BoogieIcfgContainer [2021-11-13 01:35:54,999 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 01:35:55,001 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-13 01:35:55,001 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-13 01:35:55,005 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-13 01:35:55,005 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 01:35:41" (1/3) ... [2021-11-13 01:35:55,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e8aad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:35:55, skipping insertion in model container [2021-11-13 01:35:55,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 01:35:44" (2/3) ... [2021-11-13 01:35:55,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45e8aad9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 01:35:55, skipping insertion in model container [2021-11-13 01:35:55,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 01:35:54" (3/3) ... [2021-11-13 01:35:55,008 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+sep-reducer.c [2021-11-13 01:35:55,013 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-13 01:35:55,013 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2021-11-13 01:35:55,074 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-13 01:35:55,081 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-13 01:35:55,081 INFO L340 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2021-11-13 01:35:55,150 INFO L276 IsEmpty]: Start isEmpty. Operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:35:55,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-11-13 01:35:55,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:35:55,194 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] [2021-11-13 01:35:55,195 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:35:55,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:35:55,200 INFO L85 PathProgramCache]: Analyzing trace with hash 600254357, now seen corresponding path program 1 times [2021-11-13 01:35:55,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:35:55,210 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771161274] [2021-11-13 01:35:55,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:35:55,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:35:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:35:55,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:35:55,714 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:35:55,715 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771161274] [2021-11-13 01:35:55,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771161274] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:35:55,716 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:35:55,717 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:35:55,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369529879] [2021-11-13 01:35:55,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:35:55,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:35:55,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:35:55,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:35:55,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:35:55,770 INFO L87 Difference]: Start difference. First operand has 3362 states, 3344 states have (on average 1.8310406698564594) internal successors, (6123), 3361 states have internal predecessors, (6123), 0 states have call successors, (0), 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 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:00,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:00,493 INFO L93 Difference]: Finished difference Result 6231 states and 11121 transitions. [2021-11-13 01:36:00,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:36:00,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 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 63 [2021-11-13 01:36:00,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:00,540 INFO L225 Difference]: With dead ends: 6231 [2021-11-13 01:36:00,540 INFO L226 Difference]: Without dead ends: 3945 [2021-11-13 01:36:00,551 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 [2021-11-13 01:36:00,555 INFO L933 BasicCegarLoop]: 2573 mSDtfsCounter, 18388 mSDsluCounter, 1045 mSDsCounter, 0 mSdLazyCounter, 3438 mSolverCounterSat, 235 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3256.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 18388 SdHoareTripleChecker+Valid, 3615 SdHoareTripleChecker+Invalid, 3673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 88.10ms SdHoareTripleChecker+Time, 235 IncrementalHoareTripleChecker+Valid, 3438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4113.35ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:00,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18388 Valid, 3615 Invalid, 3673 Unknown, 0 Unchecked, 88.10ms Time], IncrementalHoareTripleChecker [235 Valid, 3438 Invalid, 0 Unknown, 0 Unchecked, 4113.35ms Time] [2021-11-13 01:36:00,582 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3945 states. [2021-11-13 01:36:00,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3945 to 3921. [2021-11-13 01:36:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3921 states, 3904 states have (on average 1.309938524590164) internal successors, (5114), 3920 states have internal predecessors, (5114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:00,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3921 states to 3921 states and 5114 transitions. [2021-11-13 01:36:00,780 INFO L78 Accepts]: Start accepts. Automaton has 3921 states and 5114 transitions. Word has length 63 [2021-11-13 01:36:00,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:00,781 INFO L470 AbstractCegarLoop]: Abstraction has 3921 states and 5114 transitions. [2021-11-13 01:36:00,781 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:00,781 INFO L276 IsEmpty]: Start isEmpty. Operand 3921 states and 5114 transitions. [2021-11-13 01:36:00,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 01:36:00,792 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:00,793 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] [2021-11-13 01:36:00,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-13 01:36:00,793 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:00,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:00,794 INFO L85 PathProgramCache]: Analyzing trace with hash -1279054806, now seen corresponding path program 1 times [2021-11-13 01:36:00,795 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:00,795 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609450825] [2021-11-13 01:36:00,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:00,796 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:00,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:01,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:01,048 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:01,048 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609450825] [2021-11-13 01:36:01,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609450825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:01,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:01,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:36:01,050 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009565773] [2021-11-13 01:36:01,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:01,051 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:36:01,051 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:01,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:36:01,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:36:01,053 INFO L87 Difference]: Start difference. First operand 3921 states and 5114 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:03,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:03,935 INFO L93 Difference]: Finished difference Result 7148 states and 9301 transitions. [2021-11-13 01:36:03,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:36:03,936 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-13 01:36:03,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:03,969 INFO L225 Difference]: With dead ends: 7148 [2021-11-13 01:36:03,969 INFO L226 Difference]: Without dead ends: 4344 [2021-11-13 01:36:03,976 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 [2021-11-13 01:36:03,978 INFO L933 BasicCegarLoop]: 1317 mSDtfsCounter, 10161 mSDsluCounter, 439 mSDsCounter, 0 mSdLazyCounter, 2121 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2020.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 10161 SdHoareTripleChecker+Valid, 1756 SdHoareTripleChecker+Invalid, 2215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 35.61ms SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 2121 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2498.90ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:03,984 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10161 Valid, 1756 Invalid, 2215 Unknown, 0 Unchecked, 35.61ms Time], IncrementalHoareTripleChecker [94 Valid, 2121 Invalid, 0 Unknown, 0 Unchecked, 2498.90ms Time] [2021-11-13 01:36:03,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2021-11-13 01:36:04,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 4324. [2021-11-13 01:36:04,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4324 states, 4307 states have (on average 1.3134432319479916) internal successors, (5657), 4323 states have internal predecessors, (5657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:04,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4324 states to 4324 states and 5657 transitions. [2021-11-13 01:36:04,205 INFO L78 Accepts]: Start accepts. Automaton has 4324 states and 5657 transitions. Word has length 64 [2021-11-13 01:36:04,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:04,205 INFO L470 AbstractCegarLoop]: Abstraction has 4324 states and 5657 transitions. [2021-11-13 01:36:04,206 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:04,206 INFO L276 IsEmpty]: Start isEmpty. Operand 4324 states and 5657 transitions. [2021-11-13 01:36:04,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-13 01:36:04,216 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:04,216 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] [2021-11-13 01:36:04,216 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-13 01:36:04,217 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:04,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:04,218 INFO L85 PathProgramCache]: Analyzing trace with hash 2141976619, now seen corresponding path program 1 times [2021-11-13 01:36:04,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:04,218 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070757690] [2021-11-13 01:36:04,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:04,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:04,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:04,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:04,404 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:04,404 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070757690] [2021-11-13 01:36:04,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070757690] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:04,405 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:04,405 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:36:04,405 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559859591] [2021-11-13 01:36:04,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:04,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:36:04,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:36:04,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:36:04,408 INFO L87 Difference]: Start difference. First operand 4324 states and 5657 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:07,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:07,104 INFO L93 Difference]: Finished difference Result 8674 states and 11325 transitions. [2021-11-13 01:36:07,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:36:07,105 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 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 64 [2021-11-13 01:36:07,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:07,146 INFO L225 Difference]: With dead ends: 8674 [2021-11-13 01:36:07,146 INFO L226 Difference]: Without dead ends: 5883 [2021-11-13 01:36:07,152 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 [2021-11-13 01:36:07,156 INFO L933 BasicCegarLoop]: 1243 mSDtfsCounter, 9638 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1892 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1800.11ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9638 SdHoareTripleChecker+Valid, 1727 SdHoareTripleChecker+Invalid, 1990 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.64ms SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2288.44ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:07,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9638 Valid, 1727 Invalid, 1990 Unknown, 0 Unchecked, 23.64ms Time], IncrementalHoareTripleChecker [98 Valid, 1892 Invalid, 0 Unknown, 0 Unchecked, 2288.44ms Time] [2021-11-13 01:36:07,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5883 states. [2021-11-13 01:36:07,456 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5883 to 5856. [2021-11-13 01:36:07,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 5839 states have (on average 1.3115259462236684) internal successors, (7658), 5855 states have internal predecessors, (7658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:07,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 7658 transitions. [2021-11-13 01:36:07,491 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 7658 transitions. Word has length 64 [2021-11-13 01:36:07,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:07,496 INFO L470 AbstractCegarLoop]: Abstraction has 5856 states and 7658 transitions. [2021-11-13 01:36:07,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:07,496 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 7658 transitions. [2021-11-13 01:36:07,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 01:36:07,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:07,509 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] [2021-11-13 01:36:07,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-13 01:36:07,510 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:07,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:07,511 INFO L85 PathProgramCache]: Analyzing trace with hash 767039615, now seen corresponding path program 1 times [2021-11-13 01:36:07,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:07,515 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030678311] [2021-11-13 01:36:07,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:07,515 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:07,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:07,643 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:07,643 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:07,643 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030678311] [2021-11-13 01:36:07,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030678311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:07,644 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:07,644 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 01:36:07,644 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138163767] [2021-11-13 01:36:07,644 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:07,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-13 01:36:07,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:07,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-13 01:36:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-13 01:36:07,647 INFO L87 Difference]: Start difference. First operand 5856 states and 7658 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:09,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:09,611 INFO L93 Difference]: Finished difference Result 11170 states and 14672 transitions. [2021-11-13 01:36:09,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-13 01:36:09,612 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-13 01:36:09,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:09,659 INFO L225 Difference]: With dead ends: 11170 [2021-11-13 01:36:09,659 INFO L226 Difference]: Without dead ends: 7350 [2021-11-13 01:36:09,668 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 [2021-11-13 01:36:09,669 INFO L933 BasicCegarLoop]: 1127 mSDtfsCounter, 8101 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 1565 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1285.86ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8101 SdHoareTripleChecker+Valid, 1483 SdHoareTripleChecker+Invalid, 1607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.53ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 1565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1635.08ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:09,669 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8101 Valid, 1483 Invalid, 1607 Unknown, 0 Unchecked, 16.53ms Time], IncrementalHoareTripleChecker [42 Valid, 1565 Invalid, 0 Unknown, 0 Unchecked, 1635.08ms Time] [2021-11-13 01:36:09,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7350 states. [2021-11-13 01:36:10,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7350 to 7315. [2021-11-13 01:36:10,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7315 states, 7298 states have (on average 1.3187174568374898) internal successors, (9624), 7314 states have internal predecessors, (9624), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:10,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7315 states to 7315 states and 9624 transitions. [2021-11-13 01:36:10,200 INFO L78 Accepts]: Start accepts. Automaton has 7315 states and 9624 transitions. Word has length 65 [2021-11-13 01:36:10,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:10,200 INFO L470 AbstractCegarLoop]: Abstraction has 7315 states and 9624 transitions. [2021-11-13 01:36:10,201 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:10,201 INFO L276 IsEmpty]: Start isEmpty. Operand 7315 states and 9624 transitions. [2021-11-13 01:36:10,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 01:36:10,211 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:10,211 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] [2021-11-13 01:36:10,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-13 01:36:10,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:10,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:10,213 INFO L85 PathProgramCache]: Analyzing trace with hash 1941175905, now seen corresponding path program 1 times [2021-11-13 01:36:10,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:10,213 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401952644] [2021-11-13 01:36:10,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:10,214 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:10,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:10,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:10,382 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401952644] [2021-11-13 01:36:10,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401952644] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:10,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:10,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:36:10,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322877467] [2021-11-13 01:36:10,389 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:10,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:36:10,390 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:10,390 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:36:10,390 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:36:10,391 INFO L87 Difference]: Start difference. First operand 7315 states and 9624 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:15,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:15,826 INFO L93 Difference]: Finished difference Result 12557 states and 16727 transitions. [2021-11-13 01:36:15,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:36:15,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-13 01:36:15,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:15,879 INFO L225 Difference]: With dead ends: 12557 [2021-11-13 01:36:15,879 INFO L226 Difference]: Without dead ends: 11630 [2021-11-13 01:36:15,885 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:36:15,886 INFO L933 BasicCegarLoop]: 1213 mSDtfsCounter, 9803 mSDsluCounter, 3879 mSDsCounter, 0 mSdLazyCounter, 6442 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3648.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9803 SdHoareTripleChecker+Valid, 5092 SdHoareTripleChecker+Invalid, 6828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 66.40ms SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 6442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4467.42ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:15,886 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9803 Valid, 5092 Invalid, 6828 Unknown, 0 Unchecked, 66.40ms Time], IncrementalHoareTripleChecker [386 Valid, 6442 Invalid, 0 Unknown, 0 Unchecked, 4467.42ms Time] [2021-11-13 01:36:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11630 states. [2021-11-13 01:36:16,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11630 to 7274. [2021-11-13 01:36:16,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7274 states, 7257 states have (on average 1.318451150613201) internal successors, (9568), 7273 states have internal predecessors, (9568), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:16,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7274 states to 7274 states and 9568 transitions. [2021-11-13 01:36:16,332 INFO L78 Accepts]: Start accepts. Automaton has 7274 states and 9568 transitions. Word has length 65 [2021-11-13 01:36:16,333 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:16,333 INFO L470 AbstractCegarLoop]: Abstraction has 7274 states and 9568 transitions. [2021-11-13 01:36:16,334 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 7 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:16,334 INFO L276 IsEmpty]: Start isEmpty. Operand 7274 states and 9568 transitions. [2021-11-13 01:36:16,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-13 01:36:16,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:16,344 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] [2021-11-13 01:36:16,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-13 01:36:16,345 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:16,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:16,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1194049603, now seen corresponding path program 1 times [2021-11-13 01:36:16,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:16,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684143855] [2021-11-13 01:36:16,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:16,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:16,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:16,532 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:16,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:16,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684143855] [2021-11-13 01:36:16,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684143855] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:16,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:16,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 01:36:16,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655601993] [2021-11-13 01:36:16,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:16,537 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:36:16,537 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:16,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:36:16,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:36:16,538 INFO L87 Difference]: Start difference. First operand 7274 states and 9568 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:19,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:19,600 INFO L93 Difference]: Finished difference Result 10835 states and 14522 transitions. [2021-11-13 01:36:19,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 01:36:19,600 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 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 65 [2021-11-13 01:36:19,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:19,618 INFO L225 Difference]: With dead ends: 10835 [2021-11-13 01:36:19,618 INFO L226 Difference]: Without dead ends: 9818 [2021-11-13 01:36:19,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:36:19,624 INFO L933 BasicCegarLoop]: 1153 mSDtfsCounter, 5614 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 4224 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1952.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5614 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 4287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 30.40ms SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 4224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2455.23ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:19,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5614 Valid, 3845 Invalid, 4287 Unknown, 0 Unchecked, 30.40ms Time], IncrementalHoareTripleChecker [63 Valid, 4224 Invalid, 0 Unknown, 0 Unchecked, 2455.23ms Time] [2021-11-13 01:36:19,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9818 states. [2021-11-13 01:36:19,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9818 to 7147. [2021-11-13 01:36:19,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7130 states have (on average 1.3183730715287518) internal successors, (9400), 7146 states have internal predecessors, (9400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:19,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9400 transitions. [2021-11-13 01:36:19,974 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9400 transitions. Word has length 65 [2021-11-13 01:36:19,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:19,975 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 9400 transitions. [2021-11-13 01:36:19,975 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 6 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:19,975 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9400 transitions. [2021-11-13 01:36:19,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:36:19,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:19,985 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] [2021-11-13 01:36:19,985 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-13 01:36:19,986 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:19,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:19,986 INFO L85 PathProgramCache]: Analyzing trace with hash -780640952, now seen corresponding path program 1 times [2021-11-13 01:36:19,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:19,987 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732919305] [2021-11-13 01:36:19,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:19,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:20,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:20,111 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:20,111 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732919305] [2021-11-13 01:36:20,111 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732919305] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:20,111 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:20,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:36:20,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [367285121] [2021-11-13 01:36:20,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:20,112 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:36:20,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:20,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:36:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:36:20,113 INFO L87 Difference]: Start difference. First operand 7147 states and 9400 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:23,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:23,617 INFO L93 Difference]: Finished difference Result 9821 states and 12941 transitions. [2021-11-13 01:36:23,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-13 01:36:23,617 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-13 01:36:23,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:23,643 INFO L225 Difference]: With dead ends: 9821 [2021-11-13 01:36:23,643 INFO L226 Difference]: Without dead ends: 9813 [2021-11-13 01:36:23,647 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 [2021-11-13 01:36:23,648 INFO L933 BasicCegarLoop]: 1203 mSDtfsCounter, 8685 mSDsluCounter, 3719 mSDsCounter, 0 mSdLazyCounter, 5605 mSolverCounterSat, 283 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2316.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8685 SdHoareTripleChecker+Valid, 4922 SdHoareTripleChecker+Invalid, 5888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.22ms SdHoareTripleChecker+Time, 283 IncrementalHoareTripleChecker+Valid, 5605 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2881.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:23,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8685 Valid, 4922 Invalid, 5888 Unknown, 0 Unchecked, 29.22ms Time], IncrementalHoareTripleChecker [283 Valid, 5605 Invalid, 0 Unknown, 0 Unchecked, 2881.12ms Time] [2021-11-13 01:36:23,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9813 states. [2021-11-13 01:36:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9813 to 7147. [2021-11-13 01:36:24,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7130 states have (on average 1.3182328190743338) internal successors, (9399), 7146 states have internal predecessors, (9399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9399 transitions. [2021-11-13 01:36:24,184 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9399 transitions. Word has length 66 [2021-11-13 01:36:24,185 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:24,185 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 9399 transitions. [2021-11-13 01:36:24,185 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:24,185 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9399 transitions. [2021-11-13 01:36:24,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:36:24,198 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:24,199 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] [2021-11-13 01:36:24,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-13 01:36:24,199 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:24,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:24,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1912274000, now seen corresponding path program 1 times [2021-11-13 01:36:24,204 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:24,204 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [567971014] [2021-11-13 01:36:24,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:24,205 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:24,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:24,378 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:24,378 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [567971014] [2021-11-13 01:36:24,378 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [567971014] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:24,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:24,379 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:36:24,379 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817619055] [2021-11-13 01:36:24,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:24,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:36:24,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:24,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:36:24,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:36:24,381 INFO L87 Difference]: Start difference. First operand 7147 states and 9399 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:28,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:28,053 INFO L93 Difference]: Finished difference Result 8315 states and 10934 transitions. [2021-11-13 01:36:28,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-13 01:36:28,054 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-13 01:36:28,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:28,074 INFO L225 Difference]: With dead ends: 8315 [2021-11-13 01:36:28,075 INFO L226 Difference]: Without dead ends: 8310 [2021-11-13 01:36:28,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-13 01:36:28,080 INFO L933 BasicCegarLoop]: 1154 mSDtfsCounter, 7016 mSDsluCounter, 3590 mSDsCounter, 0 mSdLazyCounter, 4978 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2345.42ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7016 SdHoareTripleChecker+Valid, 4744 SdHoareTripleChecker+Invalid, 5124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.06ms SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 4978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2925.85ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:28,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7016 Valid, 4744 Invalid, 5124 Unknown, 0 Unchecked, 29.06ms Time], IncrementalHoareTripleChecker [146 Valid, 4978 Invalid, 0 Unknown, 0 Unchecked, 2925.85ms Time] [2021-11-13 01:36:28,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8310 states. [2021-11-13 01:36:28,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8310 to 7147. [2021-11-13 01:36:28,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7147 states, 7130 states have (on average 1.318092566619916) internal successors, (9398), 7146 states have internal predecessors, (9398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:28,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7147 states to 7147 states and 9398 transitions. [2021-11-13 01:36:28,614 INFO L78 Accepts]: Start accepts. Automaton has 7147 states and 9398 transitions. Word has length 66 [2021-11-13 01:36:28,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:28,615 INFO L470 AbstractCegarLoop]: Abstraction has 7147 states and 9398 transitions. [2021-11-13 01:36:28,615 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:28,615 INFO L276 IsEmpty]: Start isEmpty. Operand 7147 states and 9398 transitions. [2021-11-13 01:36:28,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:36:28,625 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:28,625 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] [2021-11-13 01:36:28,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-13 01:36:28,625 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:28,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:28,626 INFO L85 PathProgramCache]: Analyzing trace with hash -143652767, now seen corresponding path program 1 times [2021-11-13 01:36:28,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:28,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256968073] [2021-11-13 01:36:28,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:28,627 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:28,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:29,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:29,055 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:29,055 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256968073] [2021-11-13 01:36:29,055 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256968073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:29,056 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:29,056 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 01:36:29,056 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182155132] [2021-11-13 01:36:29,056 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:29,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:36:29,056 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:29,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:36:29,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:36:29,057 INFO L87 Difference]: Start difference. First operand 7147 states and 9398 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:32,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:32,154 INFO L93 Difference]: Finished difference Result 13456 states and 18307 transitions. [2021-11-13 01:36:32,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:36:32,155 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-13 01:36:32,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:32,181 INFO L225 Difference]: With dead ends: 13456 [2021-11-13 01:36:32,182 INFO L226 Difference]: Without dead ends: 12526 [2021-11-13 01:36:32,189 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:36:32,190 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 11913 mSDsluCounter, 7204 mSDsCounter, 0 mSdLazyCounter, 1659 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1198.51ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11913 SdHoareTripleChecker+Valid, 9338 SdHoareTripleChecker+Invalid, 1786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.34ms SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1426.74ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:32,191 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11913 Valid, 9338 Invalid, 1786 Unknown, 0 Unchecked, 43.34ms Time], IncrementalHoareTripleChecker [127 Valid, 1659 Invalid, 0 Unknown, 0 Unchecked, 1426.74ms Time] [2021-11-13 01:36:32,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12526 states. [2021-11-13 01:36:32,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12526 to 7099. [2021-11-13 01:36:32,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7099 states, 7083 states have (on average 1.3180855569673866) internal successors, (9336), 7098 states have internal predecessors, (9336), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:32,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7099 states to 7099 states and 9336 transitions. [2021-11-13 01:36:32,792 INFO L78 Accepts]: Start accepts. Automaton has 7099 states and 9336 transitions. Word has length 66 [2021-11-13 01:36:32,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:32,793 INFO L470 AbstractCegarLoop]: Abstraction has 7099 states and 9336 transitions. [2021-11-13 01:36:32,793 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 9 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:32,793 INFO L276 IsEmpty]: Start isEmpty. Operand 7099 states and 9336 transitions. [2021-11-13 01:36:32,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-13 01:36:32,804 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:32,804 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] [2021-11-13 01:36:32,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-13 01:36:32,805 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:32,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:32,806 INFO L85 PathProgramCache]: Analyzing trace with hash -1525924249, now seen corresponding path program 1 times [2021-11-13 01:36:32,806 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:32,806 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026417337] [2021-11-13 01:36:32,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:32,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:32,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:33,249 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:33,249 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:33,250 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026417337] [2021-11-13 01:36:33,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026417337] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:33,250 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:33,250 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:36:33,250 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649283430] [2021-11-13 01:36:33,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:33,251 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:36:33,251 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:33,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:36:33,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:36:33,252 INFO L87 Difference]: Start difference. First operand 7099 states and 9336 transitions. Second operand has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:36,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:36,670 INFO L93 Difference]: Finished difference Result 11310 states and 15291 transitions. [2021-11-13 01:36:36,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-13 01:36:36,670 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 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 66 [2021-11-13 01:36:36,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:36,691 INFO L225 Difference]: With dead ends: 11310 [2021-11-13 01:36:36,691 INFO L226 Difference]: Without dead ends: 11306 [2021-11-13 01:36:36,696 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:36:36,697 INFO L933 BasicCegarLoop]: 2315 mSDtfsCounter, 8561 mSDsluCounter, 11113 mSDsCounter, 0 mSdLazyCounter, 2050 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1306.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8561 SdHoareTripleChecker+Valid, 13254 SdHoareTripleChecker+Invalid, 2231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.47ms SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 2050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1564.96ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:36,697 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8561 Valid, 13254 Invalid, 2231 Unknown, 0 Unchecked, 33.47ms Time], IncrementalHoareTripleChecker [181 Valid, 2050 Invalid, 0 Unknown, 0 Unchecked, 1564.96ms Time] [2021-11-13 01:36:36,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11306 states. [2021-11-13 01:36:37,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11306 to 7095. [2021-11-13 01:36:37,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7095 states, 7080 states have (on average 1.3180790960451978) internal successors, (9332), 7094 states have internal predecessors, (9332), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:37,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7095 states to 7095 states and 9332 transitions. [2021-11-13 01:36:37,495 INFO L78 Accepts]: Start accepts. Automaton has 7095 states and 9332 transitions. Word has length 66 [2021-11-13 01:36:37,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:37,496 INFO L470 AbstractCegarLoop]: Abstraction has 7095 states and 9332 transitions. [2021-11-13 01:36:37,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.5) internal successors, (66), 11 states have internal predecessors, (66), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:37,496 INFO L276 IsEmpty]: Start isEmpty. Operand 7095 states and 9332 transitions. [2021-11-13 01:36:37,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:36:37,508 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:37,508 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] [2021-11-13 01:36:37,508 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-13 01:36:37,509 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:37,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:37,509 INFO L85 PathProgramCache]: Analyzing trace with hash 2095330879, now seen corresponding path program 1 times [2021-11-13 01:36:37,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:37,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173604484] [2021-11-13 01:36:37,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:37,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:37,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:37,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:37,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173604484] [2021-11-13 01:36:37,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173604484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:37,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:37,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:36:37,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537827808] [2021-11-13 01:36:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:37,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-13 01:36:37,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-13 01:36:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-13 01:36:37,837 INFO L87 Difference]: Start difference. First operand 7095 states and 9332 transitions. Second operand has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:41,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:41,537 INFO L93 Difference]: Finished difference Result 13973 states and 19032 transitions. [2021-11-13 01:36:41,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 01:36:41,537 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 01:36:41,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:41,558 INFO L225 Difference]: With dead ends: 13973 [2021-11-13 01:36:41,558 INFO L226 Difference]: Without dead ends: 12990 [2021-11-13 01:36:41,563 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=192, Invalid=408, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:36:41,564 INFO L933 BasicCegarLoop]: 2195 mSDtfsCounter, 11905 mSDsluCounter, 8506 mSDsCounter, 0 mSdLazyCounter, 1886 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1133.54ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11905 SdHoareTripleChecker+Valid, 10604 SdHoareTripleChecker+Invalid, 2014 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 29.95ms SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 1886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1367.27ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:41,564 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11905 Valid, 10604 Invalid, 2014 Unknown, 0 Unchecked, 29.95ms Time], IncrementalHoareTripleChecker [128 Valid, 1886 Invalid, 0 Unknown, 0 Unchecked, 1367.27ms Time] [2021-11-13 01:36:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12990 states. [2021-11-13 01:36:42,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12990 to 7063. [2021-11-13 01:36:42,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3185300794551646) internal successors, (9293), 7062 states have internal predecessors, (9293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9293 transitions. [2021-11-13 01:36:42,382 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9293 transitions. Word has length 67 [2021-11-13 01:36:42,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:42,383 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9293 transitions. [2021-11-13 01:36:42,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.090909090909091) internal successors, (67), 10 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9293 transitions. [2021-11-13 01:36:42,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:36:42,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:42,393 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] [2021-11-13 01:36:42,394 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-13 01:36:42,394 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:42,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:42,395 INFO L85 PathProgramCache]: Analyzing trace with hash 920345528, now seen corresponding path program 1 times [2021-11-13 01:36:42,395 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:42,395 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382196717] [2021-11-13 01:36:42,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:42,395 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:42,545 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:42,546 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:42,546 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382196717] [2021-11-13 01:36:42,546 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382196717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:42,546 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:42,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 01:36:42,547 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404597852] [2021-11-13 01:36:42,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:42,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-13 01:36:42,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:42,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 01:36:42,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-13 01:36:42,549 INFO L87 Difference]: Start difference. First operand 7063 states and 9293 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:46,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:46,543 INFO L93 Difference]: Finished difference Result 10873 states and 14580 transitions. [2021-11-13 01:36:46,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-13 01:36:46,544 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 01:36:46,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:46,556 INFO L225 Difference]: With dead ends: 10873 [2021-11-13 01:36:46,556 INFO L226 Difference]: Without dead ends: 9712 [2021-11-13 01:36:46,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-13 01:36:46,559 INFO L933 BasicCegarLoop]: 1097 mSDtfsCounter, 8677 mSDsluCounter, 2509 mSDsCounter, 0 mSdLazyCounter, 3980 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2054.89ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 8677 SdHoareTripleChecker+Valid, 3606 SdHoareTripleChecker+Invalid, 4082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 28.62ms SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 3980 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2561.67ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:46,560 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8677 Valid, 3606 Invalid, 4082 Unknown, 0 Unchecked, 28.62ms Time], IncrementalHoareTripleChecker [102 Valid, 3980 Invalid, 0 Unknown, 0 Unchecked, 2561.67ms Time] [2021-11-13 01:36:46,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9712 states. [2021-11-13 01:36:47,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9712 to 7063. [2021-11-13 01:36:47,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3183881952326901) internal successors, (9292), 7062 states have internal predecessors, (9292), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:47,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9292 transitions. [2021-11-13 01:36:47,356 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9292 transitions. Word has length 67 [2021-11-13 01:36:47,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:47,356 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9292 transitions. [2021-11-13 01:36:47,356 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 6 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:47,356 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9292 transitions. [2021-11-13 01:36:47,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:36:47,368 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:47,368 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] [2021-11-13 01:36:47,369 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-13 01:36:47,369 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:47,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:47,370 INFO L85 PathProgramCache]: Analyzing trace with hash -1407222430, now seen corresponding path program 1 times [2021-11-13 01:36:47,370 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:47,370 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101748173] [2021-11-13 01:36:47,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:47,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:47,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:47,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:47,541 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:47,541 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101748173] [2021-11-13 01:36:47,541 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101748173] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:47,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:47,542 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:36:47,542 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187583920] [2021-11-13 01:36:47,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:47,543 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:36:47,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:47,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:36:47,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:36:47,544 INFO L87 Difference]: Start difference. First operand 7063 states and 9292 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:52,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:52,868 INFO L93 Difference]: Finished difference Result 12012 states and 16103 transitions. [2021-11-13 01:36:52,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:36:52,868 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 01:36:52,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:52,884 INFO L225 Difference]: With dead ends: 12012 [2021-11-13 01:36:52,884 INFO L226 Difference]: Without dead ends: 11115 [2021-11-13 01:36:52,888 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=194, Unknown=0, NotChecked=0, Total=272 [2021-11-13 01:36:52,889 INFO L933 BasicCegarLoop]: 1256 mSDtfsCounter, 7113 mSDsluCounter, 4670 mSDsCounter, 0 mSdLazyCounter, 6697 mSolverCounterSat, 208 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2899.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 7113 SdHoareTripleChecker+Valid, 5926 SdHoareTripleChecker+Invalid, 6905 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 33.38ms SdHoareTripleChecker+Time, 208 IncrementalHoareTripleChecker+Valid, 6697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3556.32ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:52,889 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [7113 Valid, 5926 Invalid, 6905 Unknown, 0 Unchecked, 33.38ms Time], IncrementalHoareTripleChecker [208 Valid, 6697 Invalid, 0 Unknown, 0 Unchecked, 3556.32ms Time] [2021-11-13 01:36:52,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11115 states. [2021-11-13 01:36:53,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11115 to 7063. [2021-11-13 01:36:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3182463110102156) internal successors, (9291), 7062 states have internal predecessors, (9291), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:53,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9291 transitions. [2021-11-13 01:36:53,638 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9291 transitions. Word has length 67 [2021-11-13 01:36:53,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:53,638 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9291 transitions. [2021-11-13 01:36:53,638 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:53,638 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9291 transitions. [2021-11-13 01:36:53,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:36:53,647 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:53,648 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] [2021-11-13 01:36:53,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-13 01:36:53,648 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:53,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:53,649 INFO L85 PathProgramCache]: Analyzing trace with hash -805185725, now seen corresponding path program 1 times [2021-11-13 01:36:53,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:53,649 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75717026] [2021-11-13 01:36:53,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:53,650 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:53,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:36:53,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:36:53,764 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:36:53,765 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75717026] [2021-11-13 01:36:53,765 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75717026] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:36:53,765 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:36:53,765 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:36:53,765 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960045218] [2021-11-13 01:36:53,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:36:53,766 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:36:53,766 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:36:53,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:36:53,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:36:53,767 INFO L87 Difference]: Start difference. First operand 7063 states and 9291 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:59,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:36:59,166 INFO L93 Difference]: Finished difference Result 12055 states and 16076 transitions. [2021-11-13 01:36:59,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-13 01:36:59,166 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 01:36:59,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:36:59,178 INFO L225 Difference]: With dead ends: 12055 [2021-11-13 01:36:59,179 INFO L226 Difference]: Without dead ends: 11116 [2021-11-13 01:36:59,181 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:36:59,182 INFO L933 BasicCegarLoop]: 1162 mSDtfsCounter, 9055 mSDsluCounter, 3737 mSDsCounter, 0 mSdLazyCounter, 6185 mSolverCounterSat, 362 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2843.17ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 9055 SdHoareTripleChecker+Valid, 4899 SdHoareTripleChecker+Invalid, 6547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 43.81ms SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 6185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3530.94ms IncrementalHoareTripleChecker+Time [2021-11-13 01:36:59,182 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9055 Valid, 4899 Invalid, 6547 Unknown, 0 Unchecked, 43.81ms Time], IncrementalHoareTripleChecker [362 Valid, 6185 Invalid, 0 Unknown, 0 Unchecked, 3530.94ms Time] [2021-11-13 01:36:59,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11116 states. [2021-11-13 01:36:59,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11116 to 7063. [2021-11-13 01:36:59,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7063 states, 7048 states have (on average 1.3181044267877413) internal successors, (9290), 7062 states have internal predecessors, (9290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:59,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7063 states to 7063 states and 9290 transitions. [2021-11-13 01:36:59,843 INFO L78 Accepts]: Start accepts. Automaton has 7063 states and 9290 transitions. Word has length 67 [2021-11-13 01:36:59,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:36:59,843 INFO L470 AbstractCegarLoop]: Abstraction has 7063 states and 9290 transitions. [2021-11-13 01:36:59,843 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:36:59,844 INFO L276 IsEmpty]: Start isEmpty. Operand 7063 states and 9290 transitions. [2021-11-13 01:36:59,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:36:59,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:36:59,850 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] [2021-11-13 01:36:59,850 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-13 01:36:59,851 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:36:59,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:36:59,851 INFO L85 PathProgramCache]: Analyzing trace with hash 164568382, now seen corresponding path program 1 times [2021-11-13 01:36:59,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:36:59,851 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210904775] [2021-11-13 01:36:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:36:59,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:36:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:00,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:00,204 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:00,204 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210904775] [2021-11-13 01:37:00,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210904775] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:00,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:00,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:37:00,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31103870] [2021-11-13 01:37:00,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:00,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:37:00,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:00,206 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:37:00,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:37:00,206 INFO L87 Difference]: Start difference. First operand 7063 states and 9290 transitions. Second operand has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:07,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:07,076 INFO L93 Difference]: Finished difference Result 17367 states and 23830 transitions. [2021-11-13 01:37:07,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-13 01:37:07,077 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 01:37:07,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:07,103 INFO L225 Difference]: With dead ends: 17367 [2021-11-13 01:37:07,103 INFO L226 Difference]: Without dead ends: 16321 [2021-11-13 01:37:07,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=264, Invalid=666, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:37:07,109 INFO L933 BasicCegarLoop]: 2671 mSDtfsCounter, 11108 mSDsluCounter, 13029 mSDsCounter, 0 mSdLazyCounter, 3755 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2223.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 11108 SdHoareTripleChecker+Valid, 15541 SdHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 45.87ms SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 3755 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2673.46ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:07,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11108 Valid, 15541 Invalid, 4097 Unknown, 0 Unchecked, 45.87ms Time], IncrementalHoareTripleChecker [342 Valid, 3755 Invalid, 0 Unknown, 0 Unchecked, 2673.46ms Time] [2021-11-13 01:37:07,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16321 states. [2021-11-13 01:37:08,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16321 to 6899. [2021-11-13 01:37:08,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6899 states, 6885 states have (on average 1.3166303558460422) internal successors, (9065), 6898 states have internal predecessors, (9065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6899 states to 6899 states and 9065 transitions. [2021-11-13 01:37:08,094 INFO L78 Accepts]: Start accepts. Automaton has 6899 states and 9065 transitions. Word has length 67 [2021-11-13 01:37:08,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:08,095 INFO L470 AbstractCegarLoop]: Abstraction has 6899 states and 9065 transitions. [2021-11-13 01:37:08,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.583333333333333) internal successors, (67), 11 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 6899 states and 9065 transitions. [2021-11-13 01:37:08,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-13 01:37:08,106 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:08,107 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] [2021-11-13 01:37:08,107 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-13 01:37:08,107 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:08,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:08,108 INFO L85 PathProgramCache]: Analyzing trace with hash 2055073312, now seen corresponding path program 1 times [2021-11-13 01:37:08,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:08,109 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112153231] [2021-11-13 01:37:08,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:08,109 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:08,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:08,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:08,180 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:08,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112153231] [2021-11-13 01:37:08,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112153231] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:08,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:08,181 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:37:08,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668455721] [2021-11-13 01:37:08,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:08,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:37:08,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:08,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:37:08,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:08,183 INFO L87 Difference]: Start difference. First operand 6899 states and 9065 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:09,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:09,144 INFO L93 Difference]: Finished difference Result 9773 states and 12969 transitions. [2021-11-13 01:37:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:37:09,144 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 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 67 [2021-11-13 01:37:09,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:09,151 INFO L225 Difference]: With dead ends: 9773 [2021-11-13 01:37:09,151 INFO L226 Difference]: Without dead ends: 5890 [2021-11-13 01:37:09,156 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:09,157 INFO L933 BasicCegarLoop]: 1644 mSDtfsCounter, 1608 mSDsluCounter, 492 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 121.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1608 SdHoareTripleChecker+Valid, 2126 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.21ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 152.83ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:09,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1608 Valid, 2126 Invalid, 132 Unknown, 0 Unchecked, 5.21ms Time], IncrementalHoareTripleChecker [5 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 152.83ms Time] [2021-11-13 01:37:09,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5890 states. [2021-11-13 01:37:09,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5890 to 5872. [2021-11-13 01:37:10,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5872 states, 5862 states have (on average 1.3213920163766633) internal successors, (7746), 5871 states have internal predecessors, (7746), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:10,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5872 states to 5872 states and 7746 transitions. [2021-11-13 01:37:10,011 INFO L78 Accepts]: Start accepts. Automaton has 5872 states and 7746 transitions. Word has length 67 [2021-11-13 01:37:10,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:10,011 INFO L470 AbstractCegarLoop]: Abstraction has 5872 states and 7746 transitions. [2021-11-13 01:37:10,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:10,012 INFO L276 IsEmpty]: Start isEmpty. Operand 5872 states and 7746 transitions. [2021-11-13 01:37:10,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:37:10,019 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:10,019 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] [2021-11-13 01:37:10,019 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-13 01:37:10,020 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:10,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:10,020 INFO L85 PathProgramCache]: Analyzing trace with hash -985199678, now seen corresponding path program 1 times [2021-11-13 01:37:10,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:10,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650525630] [2021-11-13 01:37:10,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:10,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:10,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:10,085 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:10,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650525630] [2021-11-13 01:37:10,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650525630] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:10,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:10,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:37:10,087 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324593241] [2021-11-13 01:37:10,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:10,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:37:10,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:10,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:37:10,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:10,088 INFO L87 Difference]: Start difference. First operand 5872 states and 7746 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:11,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:11,303 INFO L93 Difference]: Finished difference Result 9132 states and 12158 transitions. [2021-11-13 01:37:11,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:37:11,303 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-13 01:37:11,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:11,310 INFO L225 Difference]: With dead ends: 9132 [2021-11-13 01:37:11,310 INFO L226 Difference]: Without dead ends: 5530 [2021-11-13 01:37:11,315 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:11,315 INFO L933 BasicCegarLoop]: 1273 mSDtfsCounter, 1270 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 119.65ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1270 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.23ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 150.67ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:11,316 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1270 Valid, 1627 Invalid, 148 Unknown, 0 Unchecked, 4.23ms Time], IncrementalHoareTripleChecker [9 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 150.67ms Time] [2021-11-13 01:37:11,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5530 states. [2021-11-13 01:37:12,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5530 to 5522. [2021-11-13 01:37:12,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 5515 states have (on average 1.3298277425203988) internal successors, (7334), 5521 states have internal predecessors, (7334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:12,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 7334 transitions. [2021-11-13 01:37:12,304 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 7334 transitions. Word has length 68 [2021-11-13 01:37:12,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:12,305 INFO L470 AbstractCegarLoop]: Abstraction has 5522 states and 7334 transitions. [2021-11-13 01:37:12,305 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 7334 transitions. [2021-11-13 01:37:12,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:37:12,311 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:12,311 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] [2021-11-13 01:37:12,312 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-13 01:37:12,312 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:12,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:12,313 INFO L85 PathProgramCache]: Analyzing trace with hash -746381525, now seen corresponding path program 1 times [2021-11-13 01:37:12,313 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:12,313 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667065652] [2021-11-13 01:37:12,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:12,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:12,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:12,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:12,380 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:12,380 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667065652] [2021-11-13 01:37:12,380 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667065652] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:12,380 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:12,381 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:37:12,381 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092063662] [2021-11-13 01:37:12,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:12,381 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:37:12,382 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:12,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:37:12,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:12,382 INFO L87 Difference]: Start difference. First operand 5522 states and 7334 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:13,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:13,707 INFO L93 Difference]: Finished difference Result 8036 states and 10955 transitions. [2021-11-13 01:37:13,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:37:13,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-13 01:37:13,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:13,715 INFO L225 Difference]: With dead ends: 8036 [2021-11-13 01:37:13,715 INFO L226 Difference]: Without dead ends: 5645 [2021-11-13 01:37:13,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:13,720 INFO L933 BasicCegarLoop]: 1328 mSDtfsCounter, 754 mSDsluCounter, 616 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.07ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1936 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.95ms SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 94.34ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:13,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [754 Valid, 1936 Invalid, 64 Unknown, 0 Unchecked, 3.95ms Time], IncrementalHoareTripleChecker [11 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 94.34ms Time] [2021-11-13 01:37:13,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5645 states. [2021-11-13 01:37:14,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5645 to 4547. [2021-11-13 01:37:14,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4547 states, 4540 states have (on average 1.3365638766519823) internal successors, (6068), 4546 states have internal predecessors, (6068), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:14,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4547 states to 4547 states and 6068 transitions. [2021-11-13 01:37:14,617 INFO L78 Accepts]: Start accepts. Automaton has 4547 states and 6068 transitions. Word has length 68 [2021-11-13 01:37:14,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:14,617 INFO L470 AbstractCegarLoop]: Abstraction has 4547 states and 6068 transitions. [2021-11-13 01:37:14,617 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:14,618 INFO L276 IsEmpty]: Start isEmpty. Operand 4547 states and 6068 transitions. [2021-11-13 01:37:14,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:37:14,620 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:14,620 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] [2021-11-13 01:37:14,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-13 01:37:14,621 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:14,621 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:14,621 INFO L85 PathProgramCache]: Analyzing trace with hash -1614233913, now seen corresponding path program 1 times [2021-11-13 01:37:14,621 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:14,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051141331] [2021-11-13 01:37:14,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:14,622 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:14,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:14,717 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:14,717 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:14,718 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051141331] [2021-11-13 01:37:14,718 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051141331] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:14,718 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:14,718 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:37:14,718 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154997613] [2021-11-13 01:37:14,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:14,719 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:37:14,719 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:14,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:37:14,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:14,720 INFO L87 Difference]: Start difference. First operand 4547 states and 6068 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:16,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:16,524 INFO L93 Difference]: Finished difference Result 9294 states and 12652 transitions. [2021-11-13 01:37:16,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:37:16,524 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-13 01:37:16,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:16,534 INFO L225 Difference]: With dead ends: 9294 [2021-11-13 01:37:16,535 INFO L226 Difference]: Without dead ends: 6899 [2021-11-13 01:37:16,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:16,540 INFO L933 BasicCegarLoop]: 1396 mSDtfsCounter, 775 mSDsluCounter, 1096 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 98.13ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 775 SdHoareTripleChecker+Valid, 2483 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.48ms SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.18ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:16,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [775 Valid, 2483 Invalid, 97 Unknown, 0 Unchecked, 4.48ms Time], IncrementalHoareTripleChecker [22 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 121.18ms Time] [2021-11-13 01:37:16,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6899 states. [2021-11-13 01:37:17,992 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6899 to 6891. [2021-11-13 01:37:17,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6891 states, 6884 states have (on average 1.340935502614759) internal successors, (9231), 6890 states have internal predecessors, (9231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:18,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6891 states to 6891 states and 9231 transitions. [2021-11-13 01:37:18,008 INFO L78 Accepts]: Start accepts. Automaton has 6891 states and 9231 transitions. Word has length 68 [2021-11-13 01:37:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:18,008 INFO L470 AbstractCegarLoop]: Abstraction has 6891 states and 9231 transitions. [2021-11-13 01:37:18,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:18,008 INFO L276 IsEmpty]: Start isEmpty. Operand 6891 states and 9231 transitions. [2021-11-13 01:37:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-11-13 01:37:18,013 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:18,014 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] [2021-11-13 01:37:18,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-13 01:37:18,014 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:18,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:18,015 INFO L85 PathProgramCache]: Analyzing trace with hash 563894881, now seen corresponding path program 1 times [2021-11-13 01:37:18,015 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:18,015 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906627493] [2021-11-13 01:37:18,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:18,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:18,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:18,076 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:18,077 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:18,077 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906627493] [2021-11-13 01:37:18,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906627493] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:18,077 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:18,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:37:18,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413540491] [2021-11-13 01:37:18,078 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:18,078 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:37:18,078 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:18,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:37:18,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:18,079 INFO L87 Difference]: Start difference. First operand 6891 states and 9231 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:20,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:20,708 INFO L93 Difference]: Finished difference Result 15333 states and 20857 transitions. [2021-11-13 01:37:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:37:20,709 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 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 68 [2021-11-13 01:37:20,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:20,720 INFO L225 Difference]: With dead ends: 15333 [2021-11-13 01:37:20,721 INFO L226 Difference]: Without dead ends: 10755 [2021-11-13 01:37:20,726 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 [2021-11-13 01:37:20,729 INFO L933 BasicCegarLoop]: 1442 mSDtfsCounter, 669 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 131.93ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:20,729 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [669 Valid, 2519 Invalid, 130 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [36 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 131.93ms Time] [2021-11-13 01:37:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10755 states. [2021-11-13 01:37:23,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10755 to 10747. [2021-11-13 01:37:23,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10747 states, 10740 states have (on average 1.3308193668528865) internal successors, (14293), 10746 states have internal predecessors, (14293), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:23,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10747 states to 10747 states and 14293 transitions. [2021-11-13 01:37:23,302 INFO L78 Accepts]: Start accepts. Automaton has 10747 states and 14293 transitions. Word has length 68 [2021-11-13 01:37:23,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:23,302 INFO L470 AbstractCegarLoop]: Abstraction has 10747 states and 14293 transitions. [2021-11-13 01:37:23,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:23,303 INFO L276 IsEmpty]: Start isEmpty. Operand 10747 states and 14293 transitions. [2021-11-13 01:37:23,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 01:37:23,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:23,307 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] [2021-11-13 01:37:23,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-13 01:37:23,307 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:23,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:23,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1885995579, now seen corresponding path program 1 times [2021-11-13 01:37:23,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:23,308 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162698818] [2021-11-13 01:37:23,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:23,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:23,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:23,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:23,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:23,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162698818] [2021-11-13 01:37:23,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1162698818] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:23,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:23,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 01:37:23,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126045542] [2021-11-13 01:37:23,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:23,584 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:37:23,584 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:23,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:37:23,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:37:23,585 INFO L87 Difference]: Start difference. First operand 10747 states and 14293 transitions. Second operand has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:30,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:30,464 INFO L93 Difference]: Finished difference Result 21260 states and 28786 transitions. [2021-11-13 01:37:30,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:37:30,464 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-13 01:37:30,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:30,494 INFO L225 Difference]: With dead ends: 21260 [2021-11-13 01:37:30,494 INFO L226 Difference]: Without dead ends: 19247 [2021-11-13 01:37:30,500 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=136, Invalid=284, Unknown=0, NotChecked=0, Total=420 [2021-11-13 01:37:30,501 INFO L933 BasicCegarLoop]: 1303 mSDtfsCounter, 5385 mSDsluCounter, 4523 mSDsCounter, 0 mSdLazyCounter, 957 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 670.21ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5385 SdHoareTripleChecker+Valid, 5762 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 18.63ms SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 795.03ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:30,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5385 Valid, 5762 Invalid, 1026 Unknown, 0 Unchecked, 18.63ms Time], IncrementalHoareTripleChecker [69 Valid, 957 Invalid, 0 Unknown, 0 Unchecked, 795.03ms Time] [2021-11-13 01:37:30,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19247 states. [2021-11-13 01:37:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19247 to 10616. [2021-11-13 01:37:33,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10616 states, 10612 states have (on average 1.3305691669807764) internal successors, (14120), 10615 states have internal predecessors, (14120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:33,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10616 states to 10616 states and 14120 transitions. [2021-11-13 01:37:33,554 INFO L78 Accepts]: Start accepts. Automaton has 10616 states and 14120 transitions. Word has length 69 [2021-11-13 01:37:33,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:33,554 INFO L470 AbstractCegarLoop]: Abstraction has 10616 states and 14120 transitions. [2021-11-13 01:37:33,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.9) internal successors, (69), 9 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:33,554 INFO L276 IsEmpty]: Start isEmpty. Operand 10616 states and 14120 transitions. [2021-11-13 01:37:33,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-11-13 01:37:33,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:33,559 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] [2021-11-13 01:37:33,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-13 01:37:33,560 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:33,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:33,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1898328567, now seen corresponding path program 1 times [2021-11-13 01:37:33,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:33,560 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539143191] [2021-11-13 01:37:33,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:33,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:33,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:33,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:33,614 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:33,614 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539143191] [2021-11-13 01:37:33,615 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539143191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:33,615 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:33,615 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:37:33,615 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864597558] [2021-11-13 01:37:33,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:33,616 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:37:33,616 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:33,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:37:33,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:33,617 INFO L87 Difference]: Start difference. First operand 10616 states and 14120 transitions. Second operand has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:36,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:36,992 INFO L93 Difference]: Finished difference Result 19817 states and 26681 transitions. [2021-11-13 01:37:36,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:37:36,995 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 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 69 [2021-11-13 01:37:36,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:37,007 INFO L225 Difference]: With dead ends: 19817 [2021-11-13 01:37:37,007 INFO L226 Difference]: Without dead ends: 10654 [2021-11-13 01:37:37,015 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:37:37,016 INFO L933 BasicCegarLoop]: 1071 mSDtfsCounter, 817 mSDsluCounter, 472 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 125.31ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 817 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.55ms SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 164.81ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:37,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [817 Valid, 1536 Invalid, 178 Unknown, 0 Unchecked, 4.55ms Time], IncrementalHoareTripleChecker [18 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 164.81ms Time] [2021-11-13 01:37:37,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10654 states. [2021-11-13 01:37:39,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10654 to 8856. [2021-11-13 01:37:39,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8856 states, 8852 states have (on average 1.3375508359692725) internal successors, (11840), 8855 states have internal predecessors, (11840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:39,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8856 states to 8856 states and 11840 transitions. [2021-11-13 01:37:39,457 INFO L78 Accepts]: Start accepts. Automaton has 8856 states and 11840 transitions. Word has length 69 [2021-11-13 01:37:39,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:39,458 INFO L470 AbstractCegarLoop]: Abstraction has 8856 states and 11840 transitions. [2021-11-13 01:37:39,458 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.0) internal successors, (69), 3 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:39,458 INFO L276 IsEmpty]: Start isEmpty. Operand 8856 states and 11840 transitions. [2021-11-13 01:37:39,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:37:39,461 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:39,461 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] [2021-11-13 01:37:39,461 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-13 01:37:39,462 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:39,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:39,462 INFO L85 PathProgramCache]: Analyzing trace with hash 936354534, now seen corresponding path program 1 times [2021-11-13 01:37:39,463 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:39,463 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [15322041] [2021-11-13 01:37:39,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:39,463 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:39,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:39,642 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:39,642 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:39,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [15322041] [2021-11-13 01:37:39,643 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [15322041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:39,643 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:39,643 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-13 01:37:39,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704842198] [2021-11-13 01:37:39,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:39,644 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:37:39,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:39,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:37:39,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:37:39,645 INFO L87 Difference]: Start difference. First operand 8856 states and 11840 transitions. Second operand has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:48,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:48,261 INFO L93 Difference]: Finished difference Result 21372 states and 28855 transitions. [2021-11-13 01:37:48,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-13 01:37:48,261 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-13 01:37:48,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:48,286 INFO L225 Difference]: With dead ends: 21372 [2021-11-13 01:37:48,286 INFO L226 Difference]: Without dead ends: 19200 [2021-11-13 01:37:48,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=442, Unknown=0, NotChecked=0, Total=600 [2021-11-13 01:37:48,291 INFO L933 BasicCegarLoop]: 677 mSDtfsCounter, 4676 mSDsluCounter, 2541 mSDsCounter, 0 mSdLazyCounter, 3655 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1571.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 4676 SdHoareTripleChecker+Valid, 3218 SdHoareTripleChecker+Invalid, 3906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 19.97ms SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 3655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1926.38ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:48,291 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4676 Valid, 3218 Invalid, 3906 Unknown, 0 Unchecked, 19.97ms Time], IncrementalHoareTripleChecker [251 Valid, 3655 Invalid, 0 Unknown, 0 Unchecked, 1926.38ms Time] [2021-11-13 01:37:48,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19200 states. [2021-11-13 01:37:50,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19200 to 8712. [2021-11-13 01:37:50,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8708 states have (on average 1.3388837850252642) internal successors, (11659), 8711 states have internal predecessors, (11659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:50,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 11659 transitions. [2021-11-13 01:37:50,889 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 11659 transitions. Word has length 70 [2021-11-13 01:37:50,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:50,890 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 11659 transitions. [2021-11-13 01:37:50,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.0) internal successors, (70), 9 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:50,890 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 11659 transitions. [2021-11-13 01:37:50,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:37:50,895 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:50,895 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] [2021-11-13 01:37:50,895 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-13 01:37:50,896 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:50,896 INFO L85 PathProgramCache]: Analyzing trace with hash 521195886, now seen corresponding path program 1 times [2021-11-13 01:37:50,896 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:50,897 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [576740342] [2021-11-13 01:37:50,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:50,897 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:50,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:51,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:51,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:51,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [576740342] [2021-11-13 01:37:51,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [576740342] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:51,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:51,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:37:51,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028340449] [2021-11-13 01:37:51,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:51,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:37:51,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:51,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:37:51,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:37:51,036 INFO L87 Difference]: Start difference. First operand 8712 states and 11659 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:57,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:37:57,208 INFO L93 Difference]: Finished difference Result 14013 states and 18751 transitions. [2021-11-13 01:37:57,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:37:57,209 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-13 01:37:57,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:37:57,226 INFO L225 Difference]: With dead ends: 14013 [2021-11-13 01:37:57,226 INFO L226 Difference]: Without dead ends: 13395 [2021-11-13 01:37:57,230 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 [2021-11-13 01:37:57,231 INFO L933 BasicCegarLoop]: 618 mSDtfsCounter, 3460 mSDsluCounter, 1872 mSDsCounter, 0 mSdLazyCounter, 2503 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1124.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3460 SdHoareTripleChecker+Valid, 2490 SdHoareTripleChecker+Invalid, 2592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.23ms SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 2503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1391.22ms IncrementalHoareTripleChecker+Time [2021-11-13 01:37:57,231 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3460 Valid, 2490 Invalid, 2592 Unknown, 0 Unchecked, 15.23ms Time], IncrementalHoareTripleChecker [89 Valid, 2503 Invalid, 0 Unknown, 0 Unchecked, 1391.22ms Time] [2021-11-13 01:37:57,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13395 states. [2021-11-13 01:37:59,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13395 to 8712. [2021-11-13 01:37:59,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8708 states have (on average 1.3386541111621497) internal successors, (11657), 8711 states have internal predecessors, (11657), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:59,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 11657 transitions. [2021-11-13 01:37:59,786 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 11657 transitions. Word has length 70 [2021-11-13 01:37:59,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:37:59,786 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 11657 transitions. [2021-11-13 01:37:59,786 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:37:59,786 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 11657 transitions. [2021-11-13 01:37:59,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2021-11-13 01:37:59,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:37:59,789 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] [2021-11-13 01:37:59,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-13 01:37:59,789 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:37:59,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:37:59,790 INFO L85 PathProgramCache]: Analyzing trace with hash 358544031, now seen corresponding path program 1 times [2021-11-13 01:37:59,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:37:59,790 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174615976] [2021-11-13 01:37:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:37:59,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:37:59,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:37:59,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:37:59,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:37:59,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174615976] [2021-11-13 01:37:59,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174615976] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:37:59,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:37:59,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-13 01:37:59,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009085919] [2021-11-13 01:37:59,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:37:59,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-13 01:37:59,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:37:59,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-13 01:37:59,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-13 01:37:59,916 INFO L87 Difference]: Start difference. First operand 8712 states and 11657 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:06,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:06,903 INFO L93 Difference]: Finished difference Result 16104 states and 21623 transitions. [2021-11-13 01:38:06,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:38:06,903 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 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 70 [2021-11-13 01:38:06,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:06,925 INFO L225 Difference]: With dead ends: 16104 [2021-11-13 01:38:06,926 INFO L226 Difference]: Without dead ends: 15128 [2021-11-13 01:38:06,930 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 [2021-11-13 01:38:06,931 INFO L933 BasicCegarLoop]: 742 mSDtfsCounter, 3604 mSDsluCounter, 2470 mSDsCounter, 0 mSdLazyCounter, 3510 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1450.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3604 SdHoareTripleChecker+Valid, 3212 SdHoareTripleChecker+Invalid, 3609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.98ms SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 3510 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1787.12ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:06,931 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3604 Valid, 3212 Invalid, 3609 Unknown, 0 Unchecked, 16.98ms Time], IncrementalHoareTripleChecker [99 Valid, 3510 Invalid, 0 Unknown, 0 Unchecked, 1787.12ms Time] [2021-11-13 01:38:06,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15128 states. [2021-11-13 01:38:09,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15128 to 8712. [2021-11-13 01:38:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8712 states, 8708 states have (on average 1.3384244372990353) internal successors, (11655), 8711 states have internal predecessors, (11655), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:09,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8712 states to 8712 states and 11655 transitions. [2021-11-13 01:38:09,558 INFO L78 Accepts]: Start accepts. Automaton has 8712 states and 11655 transitions. Word has length 70 [2021-11-13 01:38:09,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:09,558 INFO L470 AbstractCegarLoop]: Abstraction has 8712 states and 11655 transitions. [2021-11-13 01:38:09,558 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:09,558 INFO L276 IsEmpty]: Start isEmpty. Operand 8712 states and 11655 transitions. [2021-11-13 01:38:09,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-13 01:38:09,561 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:09,561 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] [2021-11-13 01:38:09,561 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-13 01:38:09,561 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:38:09,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:09,562 INFO L85 PathProgramCache]: Analyzing trace with hash 1750057004, now seen corresponding path program 1 times [2021-11-13 01:38:09,562 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:09,562 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634840133] [2021-11-13 01:38:09,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:09,563 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:09,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:09,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:38:09,616 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:09,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634840133] [2021-11-13 01:38:09,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634840133] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:09,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:09,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:38:09,617 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539047175] [2021-11-13 01:38:09,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:09,618 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:38:09,618 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:09,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:38:09,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:38:09,619 INFO L87 Difference]: Start difference. First operand 8712 states and 11655 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:13,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:13,822 INFO L93 Difference]: Finished difference Result 18542 states and 25482 transitions. [2021-11-13 01:38:13,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:38:13,822 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 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 71 [2021-11-13 01:38:13,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:13,837 INFO L225 Difference]: With dead ends: 18542 [2021-11-13 01:38:13,837 INFO L226 Difference]: Without dead ends: 12248 [2021-11-13 01:38:13,846 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:38:13,846 INFO L933 BasicCegarLoop]: 1091 mSDtfsCounter, 608 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 65.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 608 SdHoareTripleChecker+Valid, 1593 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.78ms SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 79.99ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:13,846 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [608 Valid, 1593 Invalid, 69 Unknown, 0 Unchecked, 2.78ms Time], IncrementalHoareTripleChecker [16 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 79.99ms Time] [2021-11-13 01:38:13,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12248 states. [2021-11-13 01:38:17,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12248 to 10894. [2021-11-13 01:38:17,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10894 states, 10890 states have (on average 1.3527089072543619) internal successors, (14731), 10893 states have internal predecessors, (14731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:17,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10894 states to 10894 states and 14731 transitions. [2021-11-13 01:38:17,475 INFO L78 Accepts]: Start accepts. Automaton has 10894 states and 14731 transitions. Word has length 71 [2021-11-13 01:38:17,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:17,475 INFO L470 AbstractCegarLoop]: Abstraction has 10894 states and 14731 transitions. [2021-11-13 01:38:17,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:17,476 INFO L276 IsEmpty]: Start isEmpty. Operand 10894 states and 14731 transitions. [2021-11-13 01:38:17,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:38:17,481 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:17,481 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] [2021-11-13 01:38:17,481 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-13 01:38:17,481 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:38:17,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:17,482 INFO L85 PathProgramCache]: Analyzing trace with hash 1762368696, now seen corresponding path program 1 times [2021-11-13 01:38:17,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:17,482 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421345115] [2021-11-13 01:38:17,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:17,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:17,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:17,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:38:17,885 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:17,885 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421345115] [2021-11-13 01:38:17,885 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421345115] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:17,885 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:17,885 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:38:17,886 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111582854] [2021-11-13 01:38:17,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:17,886 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:38:17,886 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:17,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:38:17,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:38:17,887 INFO L87 Difference]: Start difference. First operand 10894 states and 14731 transitions. Second operand has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:33,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:33,020 INFO L93 Difference]: Finished difference Result 32459 states and 44079 transitions. [2021-11-13 01:38:33,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-13 01:38:33,021 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-13 01:38:33,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:33,075 INFO L225 Difference]: With dead ends: 32459 [2021-11-13 01:38:33,075 INFO L226 Difference]: Without dead ends: 31877 [2021-11-13 01:38:33,082 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=208, Invalid=722, Unknown=0, NotChecked=0, Total=930 [2021-11-13 01:38:33,083 INFO L933 BasicCegarLoop]: 1491 mSDtfsCounter, 5728 mSDsluCounter, 8380 mSDsCounter, 0 mSdLazyCounter, 1981 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1156.41ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5728 SdHoareTripleChecker+Valid, 9629 SdHoareTripleChecker+Invalid, 2129 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 25.82ms SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1388.45ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:33,083 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5728 Valid, 9629 Invalid, 2129 Unknown, 0 Unchecked, 25.82ms Time], IncrementalHoareTripleChecker [148 Valid, 1981 Invalid, 0 Unknown, 0 Unchecked, 1388.45ms Time] [2021-11-13 01:38:33,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31877 states. [2021-11-13 01:38:37,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31877 to 10874. [2021-11-13 01:38:37,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10874 states, 10871 states have (on average 1.3525894581915188) internal successors, (14704), 10873 states have internal predecessors, (14704), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:37,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10874 states to 10874 states and 14704 transitions. [2021-11-13 01:38:37,127 INFO L78 Accepts]: Start accepts. Automaton has 10874 states and 14704 transitions. Word has length 72 [2021-11-13 01:38:37,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:37,128 INFO L470 AbstractCegarLoop]: Abstraction has 10874 states and 14704 transitions. [2021-11-13 01:38:37,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.538461538461538) internal successors, (72), 12 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:37,128 INFO L276 IsEmpty]: Start isEmpty. Operand 10874 states and 14704 transitions. [2021-11-13 01:38:37,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-13 01:38:37,131 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:37,131 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] [2021-11-13 01:38:37,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-13 01:38:37,131 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:38:37,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:37,132 INFO L85 PathProgramCache]: Analyzing trace with hash -891142700, now seen corresponding path program 1 times [2021-11-13 01:38:37,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:37,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580821444] [2021-11-13 01:38:37,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:37,132 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:37,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:37,179 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:38:37,179 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:37,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580821444] [2021-11-13 01:38:37,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580821444] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:37,180 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:37,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:38:37,181 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167949255] [2021-11-13 01:38:37,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:37,181 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:38:37,181 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:37,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:38:37,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:38:37,182 INFO L87 Difference]: Start difference. First operand 10874 states and 14704 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:41,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:41,739 INFO L93 Difference]: Finished difference Result 21059 states and 28762 transitions. [2021-11-13 01:38:41,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:38:41,740 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 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 72 [2021-11-13 01:38:41,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:41,752 INFO L225 Difference]: With dead ends: 21059 [2021-11-13 01:38:41,752 INFO L226 Difference]: Without dead ends: 11154 [2021-11-13 01:38:41,761 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:38:41,761 INFO L933 BasicCegarLoop]: 1082 mSDtfsCounter, 960 mSDsluCounter, 323 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 77.55ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 960 SdHoareTripleChecker+Valid, 1399 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 97.85ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:41,761 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [960 Valid, 1399 Invalid, 110 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [10 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 97.85ms Time] [2021-11-13 01:38:41,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11154 states. [2021-11-13 01:38:45,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11154 to 9838. [2021-11-13 01:38:45,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9838 states, 9835 states have (on average 1.3608540925266903) internal successors, (13384), 9837 states have internal predecessors, (13384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:45,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9838 states to 9838 states and 13384 transitions. [2021-11-13 01:38:45,555 INFO L78 Accepts]: Start accepts. Automaton has 9838 states and 13384 transitions. Word has length 72 [2021-11-13 01:38:45,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:45,555 INFO L470 AbstractCegarLoop]: Abstraction has 9838 states and 13384 transitions. [2021-11-13 01:38:45,555 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:45,555 INFO L276 IsEmpty]: Start isEmpty. Operand 9838 states and 13384 transitions. [2021-11-13 01:38:45,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:38:45,557 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:45,557 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] [2021-11-13 01:38:45,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-13 01:38:45,557 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:38:45,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:45,558 INFO L85 PathProgramCache]: Analyzing trace with hash 830639487, now seen corresponding path program 1 times [2021-11-13 01:38:45,558 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:45,558 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965609959] [2021-11-13 01:38:45,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:45,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:45,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:38:45,860 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:45,860 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965609959] [2021-11-13 01:38:45,861 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965609959] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:45,861 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:45,861 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-13 01:38:45,861 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748067991] [2021-11-13 01:38:45,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:45,862 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-13 01:38:45,862 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:45,862 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-13 01:38:45,862 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-13 01:38:45,863 INFO L87 Difference]: Start difference. First operand 9838 states and 13384 transitions. Second operand has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:54,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:38:54,149 INFO L93 Difference]: Finished difference Result 16893 states and 22898 transitions. [2021-11-13 01:38:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-13 01:38:54,149 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-13 01:38:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:38:54,173 INFO L225 Difference]: With dead ends: 16893 [2021-11-13 01:38:54,173 INFO L226 Difference]: Without dead ends: 16325 [2021-11-13 01:38:54,178 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 [2021-11-13 01:38:54,179 INFO L933 BasicCegarLoop]: 1062 mSDtfsCounter, 5778 mSDsluCounter, 4666 mSDsCounter, 0 mSdLazyCounter, 906 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 552.38ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 5778 SdHoareTripleChecker+Valid, 5640 SdHoareTripleChecker+Invalid, 1050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.95ms SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 663.64ms IncrementalHoareTripleChecker+Time [2021-11-13 01:38:54,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [5778 Valid, 5640 Invalid, 1050 Unknown, 0 Unchecked, 15.95ms Time], IncrementalHoareTripleChecker [144 Valid, 906 Invalid, 0 Unknown, 0 Unchecked, 663.64ms Time] [2021-11-13 01:38:54,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16325 states. [2021-11-13 01:38:58,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16325 to 9832. [2021-11-13 01:38:58,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9832 states, 9830 states have (on average 1.3606307222787386) internal successors, (13375), 9831 states have internal predecessors, (13375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:58,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9832 states to 9832 states and 13375 transitions. [2021-11-13 01:38:58,180 INFO L78 Accepts]: Start accepts. Automaton has 9832 states and 13375 transitions. Word has length 73 [2021-11-13 01:38:58,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:38:58,180 INFO L470 AbstractCegarLoop]: Abstraction has 9832 states and 13375 transitions. [2021-11-13 01:38:58,180 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.083333333333333) internal successors, (73), 11 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:38:58,180 INFO L276 IsEmpty]: Start isEmpty. Operand 9832 states and 13375 transitions. [2021-11-13 01:38:58,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:38:58,183 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:38:58,183 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] [2021-11-13 01:38:58,183 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-13 01:38:58,184 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:38:58,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:38:58,184 INFO L85 PathProgramCache]: Analyzing trace with hash -581497913, now seen corresponding path program 1 times [2021-11-13 01:38:58,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:38:58,184 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93824984] [2021-11-13 01:38:58,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:38:58,184 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:38:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:38:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:38:58,588 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:38:58,588 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93824984] [2021-11-13 01:38:58,588 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93824984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:38:58,588 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:38:58,588 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-13 01:38:58,589 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23492631] [2021-11-13 01:38:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:38:58,589 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-13 01:38:58,589 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:38:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-13 01:38:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-13 01:38:58,590 INFO L87 Difference]: Start difference. First operand 9832 states and 13375 transitions. Second operand has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:17,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:17,243 INFO L93 Difference]: Finished difference Result 34719 states and 47107 transitions. [2021-11-13 01:39:17,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-13 01:39:17,243 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-13 01:39:17,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:17,297 INFO L225 Difference]: With dead ends: 34719 [2021-11-13 01:39:17,297 INFO L226 Difference]: Without dead ends: 34117 [2021-11-13 01:39:17,304 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 161 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=185, Invalid=685, Unknown=0, NotChecked=0, Total=870 [2021-11-13 01:39:17,305 INFO L933 BasicCegarLoop]: 1347 mSDtfsCounter, 6230 mSDsluCounter, 6986 mSDsCounter, 0 mSdLazyCounter, 1763 mSolverCounterSat, 196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1096.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 6230 SdHoareTripleChecker+Valid, 8172 SdHoareTripleChecker+Invalid, 1959 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 23.82ms SdHoareTripleChecker+Time, 196 IncrementalHoareTripleChecker+Valid, 1763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1326.29ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:17,305 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6230 Valid, 8172 Invalid, 1959 Unknown, 0 Unchecked, 23.82ms Time], IncrementalHoareTripleChecker [196 Valid, 1763 Invalid, 0 Unknown, 0 Unchecked, 1326.29ms Time] [2021-11-13 01:39:17,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34117 states. [2021-11-13 01:39:21,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34117 to 9792. [2021-11-13 01:39:21,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9792 states, 9791 states have (on average 1.3608415892145849) internal successors, (13324), 9791 states have internal predecessors, (13324), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:21,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9792 states to 9792 states and 13324 transitions. [2021-11-13 01:39:21,610 INFO L78 Accepts]: Start accepts. Automaton has 9792 states and 13324 transitions. Word has length 73 [2021-11-13 01:39:21,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:39:21,610 INFO L470 AbstractCegarLoop]: Abstraction has 9792 states and 13324 transitions. [2021-11-13 01:39:21,610 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.615384615384615) internal successors, (73), 12 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:21,611 INFO L276 IsEmpty]: Start isEmpty. Operand 9792 states and 13324 transitions. [2021-11-13 01:39:21,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:39:21,613 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:39:21,613 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] [2021-11-13 01:39:21,613 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-13 01:39:21,614 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:39:21,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:39:21,614 INFO L85 PathProgramCache]: Analyzing trace with hash -1325615543, now seen corresponding path program 1 times [2021-11-13 01:39:21,614 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:39:21,614 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401806597] [2021-11-13 01:39:21,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:21,614 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:39:21,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:21,676 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:39:21,677 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:39:21,677 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401806597] [2021-11-13 01:39:21,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401806597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:39:21,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:39:21,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:39:21,678 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324114320] [2021-11-13 01:39:21,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:21,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:39:21,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:39:21,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:39:21,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:39:21,679 INFO L87 Difference]: Start difference. First operand 9792 states and 13324 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:27,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:27,707 INFO L93 Difference]: Finished difference Result 22852 states and 31559 transitions. [2021-11-13 01:39:27,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:39:27,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-13 01:39:27,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:27,726 INFO L225 Difference]: With dead ends: 22852 [2021-11-13 01:39:27,726 INFO L226 Difference]: Without dead ends: 14402 [2021-11-13 01:39:27,732 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:39:27,733 INFO L933 BasicCegarLoop]: 1019 mSDtfsCounter, 629 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 72.64ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 629 SdHoareTripleChecker+Valid, 1379 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.33ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 91.52ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:27,733 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [629 Valid, 1379 Invalid, 95 Unknown, 0 Unchecked, 2.33ms Time], IncrementalHoareTripleChecker [31 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 91.52ms Time] [2021-11-13 01:39:27,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14402 states. [2021-11-13 01:39:33,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14402 to 13380. [2021-11-13 01:39:33,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13380 states, 13379 states have (on average 1.3594439046266538) internal successors, (18188), 13379 states have internal predecessors, (18188), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:33,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13380 states to 13380 states and 18188 transitions. [2021-11-13 01:39:33,307 INFO L78 Accepts]: Start accepts. Automaton has 13380 states and 18188 transitions. Word has length 73 [2021-11-13 01:39:33,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:39:33,307 INFO L470 AbstractCegarLoop]: Abstraction has 13380 states and 18188 transitions. [2021-11-13 01:39:33,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:33,307 INFO L276 IsEmpty]: Start isEmpty. Operand 13380 states and 18188 transitions. [2021-11-13 01:39:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-13 01:39:33,310 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:39:33,310 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] [2021-11-13 01:39:33,310 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-13 01:39:33,310 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:39:33,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:39:33,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1745719696, now seen corresponding path program 1 times [2021-11-13 01:39:33,311 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:39:33,311 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657743302] [2021-11-13 01:39:33,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:33,312 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:39:33,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:33,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:39:33,425 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:39:33,425 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657743302] [2021-11-13 01:39:33,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657743302] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:39:33,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:39:33,426 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-13 01:39:33,426 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294604904] [2021-11-13 01:39:33,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:33,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-13 01:39:33,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:39:33,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-13 01:39:33,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:39:33,427 INFO L87 Difference]: Start difference. First operand 13380 states and 18188 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:39,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:39,239 INFO L93 Difference]: Finished difference Result 24652 states and 33732 transitions. [2021-11-13 01:39:39,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-13 01:39:39,240 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 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 73 [2021-11-13 01:39:39,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:39,255 INFO L225 Difference]: With dead ends: 24652 [2021-11-13 01:39:39,255 INFO L226 Difference]: Without dead ends: 12656 [2021-11-13 01:39:39,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2021-11-13 01:39:39,265 INFO L933 BasicCegarLoop]: 898 mSDtfsCounter, 1663 mSDsluCounter, 619 mSDsCounter, 0 mSdLazyCounter, 148 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 131.57ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1663 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.60ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 161.19ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:39,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1663 Valid, 1509 Invalid, 168 Unknown, 0 Unchecked, 4.60ms Time], IncrementalHoareTripleChecker [20 Valid, 148 Invalid, 0 Unknown, 0 Unchecked, 161.19ms Time] [2021-11-13 01:39:39,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12656 states. [2021-11-13 01:39:45,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12656 to 12650. [2021-11-13 01:39:45,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12650 states, 12649 states have (on average 1.3538619653727568) internal successors, (17125), 12649 states have internal predecessors, (17125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:45,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12650 states to 12650 states and 17125 transitions. [2021-11-13 01:39:45,067 INFO L78 Accepts]: Start accepts. Automaton has 12650 states and 17125 transitions. Word has length 73 [2021-11-13 01:39:45,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:39:45,067 INFO L470 AbstractCegarLoop]: Abstraction has 12650 states and 17125 transitions. [2021-11-13 01:39:45,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:45,068 INFO L276 IsEmpty]: Start isEmpty. Operand 12650 states and 17125 transitions. [2021-11-13 01:39:45,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-13 01:39:45,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:39:45,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:39:45,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-13 01:39:45,070 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:39:45,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:39:45,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1692473838, now seen corresponding path program 1 times [2021-11-13 01:39:45,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:39:45,071 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54463955] [2021-11-13 01:39:45,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:39:45,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:39:45,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:39:45,127 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:39:45,127 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:39:45,128 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54463955] [2021-11-13 01:39:45,128 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54463955] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:39:45,128 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:39:45,128 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:39:45,128 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50745755] [2021-11-13 01:39:45,129 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:39:45,129 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:39:45,129 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:39:45,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:39:45,130 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:39:45,130 INFO L87 Difference]: Start difference. First operand 12650 states and 17125 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:39:54,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:39:54,023 INFO L93 Difference]: Finished difference Result 29906 states and 40963 transitions. [2021-11-13 01:39:54,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:39:54,023 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-13 01:39:54,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:39:54,048 INFO L225 Difference]: With dead ends: 29906 [2021-11-13 01:39:54,048 INFO L226 Difference]: Without dead ends: 19004 [2021-11-13 01:39:54,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:39:54,057 INFO L933 BasicCegarLoop]: 981 mSDtfsCounter, 535 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 70.26ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 535 SdHoareTripleChecker+Valid, 1403 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 87.59ms IncrementalHoareTripleChecker+Time [2021-11-13 01:39:54,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [535 Valid, 1403 Invalid, 85 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [32 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 87.59ms Time] [2021-11-13 01:39:54,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19004 states. [2021-11-13 01:40:02,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19004 to 17564. [2021-11-13 01:40:02,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17564 states, 17563 states have (on average 1.3494847121790128) internal successors, (23701), 17563 states have internal predecessors, (23701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:40:02,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17564 states to 17564 states and 23701 transitions. [2021-11-13 01:40:02,489 INFO L78 Accepts]: Start accepts. Automaton has 17564 states and 23701 transitions. Word has length 75 [2021-11-13 01:40:02,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:02,490 INFO L470 AbstractCegarLoop]: Abstraction has 17564 states and 23701 transitions. [2021-11-13 01:40:02,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:40:02,490 INFO L276 IsEmpty]: Start isEmpty. Operand 17564 states and 23701 transitions. [2021-11-13 01:40:02,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-13 01:40:02,493 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:02,493 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 01:40:02,493 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-13 01:40:02,493 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:40:02,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:02,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1151547134, now seen corresponding path program 1 times [2021-11-13 01:40:02,494 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:40:02,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2017045846] [2021-11-13 01:40:02,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:02,495 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:40:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:02,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:40:02,558 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:40:02,558 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2017045846] [2021-11-13 01:40:02,558 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2017045846] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:40:02,558 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:40:02,559 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 01:40:02,559 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190563011] [2021-11-13 01:40:02,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:02,559 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-13 01:40:02,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:40:02,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 01:40:02,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:40:02,560 INFO L87 Difference]: Start difference. First operand 17564 states and 23701 transitions. Second operand has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:40:14,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 01:40:14,248 INFO L93 Difference]: Finished difference Result 41873 states and 57060 transitions. [2021-11-13 01:40:14,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 01:40:14,249 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-13 01:40:14,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-13 01:40:14,295 INFO L225 Difference]: With dead ends: 41873 [2021-11-13 01:40:14,295 INFO L226 Difference]: Without dead ends: 26487 [2021-11-13 01:40:14,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 01:40:14,310 INFO L933 BasicCegarLoop]: 962 mSDtfsCounter, 426 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 87.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 426 SdHoareTripleChecker+Valid, 1469 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.04ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 110.04ms IncrementalHoareTripleChecker+Time [2021-11-13 01:40:14,310 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [426 Valid, 1469 Invalid, 106 Unknown, 0 Unchecked, 3.04ms Time], IncrementalHoareTripleChecker [38 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 110.04ms Time] [2021-11-13 01:40:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26487 states. [2021-11-13 01:40:25,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26487 to 24389. [2021-11-13 01:40:25,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24389 states, 24388 states have (on average 1.3425045104149582) internal successors, (32741), 24388 states have internal predecessors, (32741), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:40:25,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24389 states to 24389 states and 32741 transitions. [2021-11-13 01:40:25,630 INFO L78 Accepts]: Start accepts. Automaton has 24389 states and 32741 transitions. Word has length 78 [2021-11-13 01:40:25,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-13 01:40:25,630 INFO L470 AbstractCegarLoop]: Abstraction has 24389 states and 32741 transitions. [2021-11-13 01:40:25,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 26.0) internal successors, (78), 3 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 01:40:25,630 INFO L276 IsEmpty]: Start isEmpty. Operand 24389 states and 32741 transitions. [2021-11-13 01:40:25,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-13 01:40:25,633 INFO L506 BasicCegarLoop]: Found error trace [2021-11-13 01:40:25,633 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] [2021-11-13 01:40:25,633 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-13 01:40:25,633 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 14 more)] === [2021-11-13 01:40:25,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 01:40:25,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1874224031, now seen corresponding path program 1 times [2021-11-13 01:40:25,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-13 01:40:25,634 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [820215141] [2021-11-13 01:40:25,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 01:40:25,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 01:40:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 01:40:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 01:40:25,769 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-13 01:40:25,769 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [820215141] [2021-11-13 01:40:25,769 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [820215141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 01:40:25,769 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 01:40:25,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-13 01:40:25,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489205290] [2021-11-13 01:40:25,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 01:40:25,770 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-13 01:40:25,770 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-13 01:40:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-13 01:40:25,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-13 01:40:25,771 INFO L87 Difference]: Start difference. First operand 24389 states and 32741 transitions. Second operand has 10 states, 10 states have (on average 8.2) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)