./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH --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 0e3838e9b0fe368810fc333620df3a05f4f501b739959aedb61fcfde88b41758 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 05:17:55,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 05:17:55,680 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 05:17:55,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 05:17:55,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 05:17:55,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 05:17:55,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 05:17:55,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 05:17:55,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 05:17:55,741 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 05:17:55,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 05:17:55,744 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 05:17:55,745 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 05:17:55,746 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 05:17:55,747 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 05:17:55,749 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 05:17:55,750 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 05:17:55,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 05:17:55,753 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 05:17:55,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 05:17:55,758 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 05:17:55,759 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 05:17:55,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 05:17:55,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 05:17:55,766 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 05:17:55,766 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 05:17:55,767 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 05:17:55,768 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 05:17:55,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 05:17:55,770 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 05:17:55,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 05:17:55,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 05:17:55,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 05:17:55,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 05:17:55,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 05:17:55,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 05:17:55,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 05:17:55,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 05:17:55,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 05:17:55,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 05:17:55,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 05:17:55,780 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 05:17:55,805 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 05:17:55,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 05:17:55,807 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 05:17:55,807 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 05:17:55,807 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 05:17:55,807 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 05:17:55,807 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 05:17:55,808 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 05:17:55,808 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 05:17:55,808 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 05:17:55,808 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 05:17:55,809 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 05:17:55,809 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 05:17:55,809 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 05:17:55,809 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 05:17:55,816 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 05:17:55,816 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 05:17:55,817 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 05:17:55,817 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 05:17:55,817 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 05:17:55,817 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 05:17:55,818 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 05:17:55,818 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 05:17:55,818 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 05:17:55,818 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 05:17:55,818 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 05:17:55,819 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 05:17:55,819 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 05:17:55,819 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 05:17:55,819 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 05:17:55,820 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:17:55,820 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 05:17:55,820 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 05:17:55,822 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 05:17:55,822 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 05:17:55,822 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 05:17:55,823 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 05:17:55,823 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 05:17:55,823 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 05:17:55,823 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e3838e9b0fe368810fc333620df3a05f4f501b739959aedb61fcfde88b41758 [2021-11-03 05:17:56,129 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 05:17:56,166 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 05:17:56,169 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 05:17:56,171 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 05:17:56,171 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 05:17:56,172 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-03 05:17:56,250 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/data/93b42a3a7/310d5f9e5bbe4db1b553d391654873d0/FLAG50d7daf78 [2021-11-03 05:17:57,291 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 05:17:57,293 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-03 05:17:57,358 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/data/93b42a3a7/310d5f9e5bbe4db1b553d391654873d0/FLAG50d7daf78 [2021-11-03 05:17:57,669 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/data/93b42a3a7/310d5f9e5bbe4db1b553d391654873d0 [2021-11-03 05:17:57,671 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 05:17:57,673 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 05:17:57,674 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 05:17:57,675 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 05:17:57,678 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 05:17:57,679 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:57" (1/1) ... [2021-11-03 05:17:57,680 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18e461f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:17:57, skipping insertion in model container [2021-11-03 05:17:57,680 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 05:17:57" (1/1) ... [2021-11-03 05:17:57,687 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 05:17:58,062 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 05:17:59,235 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[93880,93893] [2021-11-03 05:17:59,362 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127977,127990] [2021-11-03 05:17:59,521 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[184673,184686] [2021-11-03 05:17:59,682 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[220032,220045] [2021-11-03 05:17:59,712 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[229801,229814] [2021-11-03 05:17:59,721 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[232051,232064] [2021-11-03 05:17:59,776 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[249702,249715] [2021-11-03 05:17:59,801 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[257723,257736] [2021-11-03 05:17:59,905 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[288453,288466] [2021-11-03 05:17:59,998 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[318193,318206] [2021-11-03 05:18:00,245 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[406252,406265] [2021-11-03 05:18:00,301 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[425331,425344] [2021-11-03 05:18:00,360 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[445911,445924] [2021-11-03 05:18:00,408 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[453486,453499] [2021-11-03 05:18:00,440 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[457284,457297] [2021-11-03 05:18:00,497 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[472883,472896] [2021-11-03 05:18:00,546 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[488771,488784] [2021-11-03 05:18:00,649 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[523323,523336] [2021-11-03 05:18:00,897 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[617972,617985] [2021-11-03 05:18:01,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:18:01,184 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 05:18:01,587 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[93880,93893] [2021-11-03 05:18:01,684 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127977,127990] [2021-11-03 05:18:01,842 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[184673,184686] [2021-11-03 05:18:01,927 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[220032,220045] [2021-11-03 05:18:01,952 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[229801,229814] [2021-11-03 05:18:01,959 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[232051,232064] [2021-11-03 05:18:02,004 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[249702,249715] [2021-11-03 05:18:02,024 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[257723,257736] [2021-11-03 05:18:02,101 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[288453,288466] [2021-11-03 05:18:02,176 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[318193,318206] [2021-11-03 05:18:02,388 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[406252,406265] [2021-11-03 05:18:02,438 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[425331,425344] [2021-11-03 05:18:02,493 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[445911,445924] [2021-11-03 05:18:02,513 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[453486,453499] [2021-11-03 05:18:02,524 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[457284,457297] [2021-11-03 05:18:02,598 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[472883,472896] [2021-11-03 05:18:02,638 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[488771,488784] [2021-11-03 05:18:02,723 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[523323,523336] [2021-11-03 05:18:02,933 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_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[617972,617985] [2021-11-03 05:18:03,140 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 05:18:03,180 INFO L208 MainTranslator]: Completed translation [2021-11-03 05:18:03,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03 WrapperNode [2021-11-03 05:18:03,181 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 05:18:03,182 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 05:18:03,182 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 05:18:03,182 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 05:18:03,190 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:03,287 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:03,764 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 05:18:03,765 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 05:18:03,765 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 05:18:03,765 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 05:18:03,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:03,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:03,837 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:03,837 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:04,089 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:04,211 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:04,247 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:04,334 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 05:18:04,336 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 05:18:04,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 05:18:04,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 05:18:04,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (1/1) ... [2021-11-03 05:18:04,348 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 05:18:04,361 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 05:18:04,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 05:18:04,395 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8cd9f5a-8f73-4d3d-9e98-7879f6267c5d/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 05:18:04,427 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 05:18:04,428 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 05:18:04,428 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 05:18:04,428 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 05:18:19,145 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 05:18:19,146 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-03 05:18:19,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:18:19 BoogieIcfgContainer [2021-11-03 05:18:19,156 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 05:18:19,160 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 05:18:19,160 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 05:18:19,164 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 05:18:19,164 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 05:17:57" (1/3) ... [2021-11-03 05:18:19,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4b2448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:18:19, skipping insertion in model container [2021-11-03 05:18:19,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 05:18:03" (2/3) ... [2021-11-03 05:18:19,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b4b2448 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 05:18:19, skipping insertion in model container [2021-11-03 05:18:19,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 05:18:19" (3/3) ... [2021-11-03 05:18:19,169 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-03 05:18:19,178 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 05:18:19,179 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 19 error locations. [2021-11-03 05:18:19,257 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 05:18:19,267 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 [2021-11-03 05:18:19,268 INFO L340 AbstractCegarLoop]: Starting to check reachability of 19 error locations. [2021-11-03 05:18:19,380 INFO L276 IsEmpty]: Start isEmpty. Operand has 6224 states, 6204 states have (on average 1.776434558349452) internal successors, (11021), 6223 states have internal predecessors, (11021), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:19,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-11-03 05:18:19,427 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:19,428 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:19,428 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:18:19,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:19,434 INFO L85 PathProgramCache]: Analyzing trace with hash 556941127, now seen corresponding path program 1 times [2021-11-03 05:18:19,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:19,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180964442] [2021-11-03 05:18:19,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:19,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:19,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:20,085 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:20,086 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:20,086 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180964442] [2021-11-03 05:18:20,087 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180964442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:20,087 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:20,088 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:18:20,089 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743081614] [2021-11-03 05:18:20,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:18:20,098 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:20,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:18:20,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:20,135 INFO L87 Difference]: Start difference. First operand has 6224 states, 6204 states have (on average 1.776434558349452) internal successors, (11021), 6223 states have internal predecessors, (11021), 0 states have call successors, (0), 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 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:25,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:25,667 INFO L93 Difference]: Finished difference Result 9150 states and 15957 transitions. [2021-11-03 05:18:25,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:18:25,669 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 77 [2021-11-03 05:18:25,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:25,721 INFO L225 Difference]: With dead ends: 9150 [2021-11-03 05:18:25,721 INFO L226 Difference]: Without dead ends: 5803 [2021-11-03 05:18:25,736 INFO L786 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 [2021-11-03 05:18:25,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5803 states. [2021-11-03 05:18:26,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5803 to 5770. [2021-11-03 05:18:26,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5770 states, 5751 states have (on average 1.2809946096331073) internal successors, (7367), 5769 states have internal predecessors, (7367), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:26,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5770 states to 5770 states and 7367 transitions. [2021-11-03 05:18:26,045 INFO L78 Accepts]: Start accepts. Automaton has 5770 states and 7367 transitions. Word has length 77 [2021-11-03 05:18:26,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:26,047 INFO L470 AbstractCegarLoop]: Abstraction has 5770 states and 7367 transitions. [2021-11-03 05:18:26,047 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:26,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5770 states and 7367 transitions. [2021-11-03 05:18:26,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-03 05:18:26,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:26,067 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:26,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 05:18:26,068 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:18:26,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:26,071 INFO L85 PathProgramCache]: Analyzing trace with hash 129891559, now seen corresponding path program 1 times [2021-11-03 05:18:26,071 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:26,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45486051] [2021-11-03 05:18:26,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:26,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:26,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:26,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:26,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:26,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45486051] [2021-11-03 05:18:26,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45486051] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:26,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:26,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:18:26,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124504398] [2021-11-03 05:18:26,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:18:26,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:26,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:18:26,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:26,276 INFO L87 Difference]: Start difference. First operand 5770 states and 7367 transitions. Second operand has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:30,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:30,272 INFO L93 Difference]: Finished difference Result 9466 states and 12008 transitions. [2021-11-03 05:18:30,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:18:30,272 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 78 [2021-11-03 05:18:30,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:30,307 INFO L225 Difference]: With dead ends: 9466 [2021-11-03 05:18:30,308 INFO L226 Difference]: Without dead ends: 6014 [2021-11-03 05:18:30,315 INFO L786 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 [2021-11-03 05:18:30,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2021-11-03 05:18:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5983. [2021-11-03 05:18:30,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5983 states, 5964 states have (on average 1.2766599597585513) internal successors, (7614), 5982 states have internal predecessors, (7614), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:30,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5983 states to 5983 states and 7614 transitions. [2021-11-03 05:18:30,610 INFO L78 Accepts]: Start accepts. Automaton has 5983 states and 7614 transitions. Word has length 78 [2021-11-03 05:18:30,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:30,611 INFO L470 AbstractCegarLoop]: Abstraction has 5983 states and 7614 transitions. [2021-11-03 05:18:30,612 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:30,612 INFO L276 IsEmpty]: Start isEmpty. Operand 5983 states and 7614 transitions. [2021-11-03 05:18:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 05:18:30,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:30,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:30,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 05:18:30,628 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:18:30,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash 1232150739, now seen corresponding path program 1 times [2021-11-03 05:18:30,638 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:30,638 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822266914] [2021-11-03 05:18:30,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:30,639 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:30,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:30,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:30,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:30,813 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1822266914] [2021-11-03 05:18:30,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1822266914] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:30,813 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:30,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:18:30,814 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850059689] [2021-11-03 05:18:30,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:18:30,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:30,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:18:30,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:30,815 INFO L87 Difference]: Start difference. First operand 5983 states and 7614 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:34,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:34,333 INFO L93 Difference]: Finished difference Result 10922 states and 13884 transitions. [2021-11-03 05:18:34,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:18:34,334 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-03 05:18:34,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:34,380 INFO L225 Difference]: With dead ends: 10922 [2021-11-03 05:18:34,380 INFO L226 Difference]: Without dead ends: 7480 [2021-11-03 05:18:34,388 INFO L786 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 [2021-11-03 05:18:34,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7480 states. [2021-11-03 05:18:34,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7480 to 7460. [2021-11-03 05:18:34,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 7441 states have (on average 1.275097433140707) internal successors, (9488), 7459 states have internal predecessors, (9488), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:34,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 9488 transitions. [2021-11-03 05:18:34,953 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 9488 transitions. Word has length 79 [2021-11-03 05:18:34,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:34,954 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 9488 transitions. [2021-11-03 05:18:34,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:34,955 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 9488 transitions. [2021-11-03 05:18:34,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 05:18:34,970 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:34,970 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:34,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 05:18:34,971 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:18:34,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:34,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1538274182, now seen corresponding path program 1 times [2021-11-03 05:18:34,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:34,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775536900] [2021-11-03 05:18:34,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:34,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:35,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:35,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:35,298 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:35,299 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775536900] [2021-11-03 05:18:35,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775536900] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:35,299 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:35,299 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:18:35,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815376587] [2021-11-03 05:18:35,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:18:35,302 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:35,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:18:35,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:18:35,303 INFO L87 Difference]: Start difference. First operand 7460 states and 9488 transitions. Second operand has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:41,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:41,568 INFO L93 Difference]: Finished difference Result 8496 states and 10801 transitions. [2021-11-03 05:18:41,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:18:41,575 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-03 05:18:41,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:41,628 INFO L225 Difference]: With dead ends: 8496 [2021-11-03 05:18:41,629 INFO L226 Difference]: Without dead ends: 8490 [2021-11-03 05:18:41,633 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:18:41,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8490 states. [2021-11-03 05:18:42,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8490 to 7460. [2021-11-03 05:18:42,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7460 states, 7441 states have (on average 1.2749630426018008) internal successors, (9487), 7459 states have internal predecessors, (9487), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:42,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7460 states to 7460 states and 9487 transitions. [2021-11-03 05:18:42,109 INFO L78 Accepts]: Start accepts. Automaton has 7460 states and 9487 transitions. Word has length 79 [2021-11-03 05:18:42,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:42,110 INFO L470 AbstractCegarLoop]: Abstraction has 7460 states and 9487 transitions. [2021-11-03 05:18:42,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.875) internal successors, (79), 7 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:42,111 INFO L276 IsEmpty]: Start isEmpty. Operand 7460 states and 9487 transitions. [2021-11-03 05:18:42,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-03 05:18:42,123 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:42,124 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:42,124 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-03 05:18:42,124 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:18:42,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:42,125 INFO L85 PathProgramCache]: Analyzing trace with hash -1448863563, now seen corresponding path program 1 times [2021-11-03 05:18:42,125 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:42,125 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205238478] [2021-11-03 05:18:42,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:42,126 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:42,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:42,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:42,302 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:42,302 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205238478] [2021-11-03 05:18:42,303 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205238478] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:42,303 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:42,303 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:18:42,306 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970350472] [2021-11-03 05:18:42,311 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:18:42,312 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:42,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:18:42,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:18:42,313 INFO L87 Difference]: Start difference. First operand 7460 states and 9487 transitions. Second operand has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:45,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:45,016 INFO L93 Difference]: Finished difference Result 15041 states and 19076 transitions. [2021-11-03 05:18:45,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:18:45,017 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 79 [2021-11-03 05:18:45,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:45,048 INFO L225 Difference]: With dead ends: 15041 [2021-11-03 05:18:45,049 INFO L226 Difference]: Without dead ends: 10250 [2021-11-03 05:18:45,059 INFO L786 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 [2021-11-03 05:18:45,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10250 states. [2021-11-03 05:18:45,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10250 to 10222. [2021-11-03 05:18:45,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10222 states, 10203 states have (on average 1.2509065960991865) internal successors, (12763), 10221 states have internal predecessors, (12763), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:45,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10222 states to 10222 states and 12763 transitions. [2021-11-03 05:18:45,602 INFO L78 Accepts]: Start accepts. Automaton has 10222 states and 12763 transitions. Word has length 79 [2021-11-03 05:18:45,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:45,604 INFO L470 AbstractCegarLoop]: Abstraction has 10222 states and 12763 transitions. [2021-11-03 05:18:45,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:45,604 INFO L276 IsEmpty]: Start isEmpty. Operand 10222 states and 12763 transitions. [2021-11-03 05:18:45,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 05:18:45,624 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:45,624 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:45,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-03 05:18:45,624 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:18:45,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:45,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1852629809, now seen corresponding path program 1 times [2021-11-03 05:18:45,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:45,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1919429738] [2021-11-03 05:18:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:45,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:45,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:46,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:46,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:46,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1919429738] [2021-11-03 05:18:46,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1919429738] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:46,171 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:46,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:18:46,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493676998] [2021-11-03 05:18:46,172 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:18:46,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:46,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:18:46,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:18:46,173 INFO L87 Difference]: Start difference. First operand 10222 states and 12763 transitions. Second operand has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:52,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:18:52,228 INFO L93 Difference]: Finished difference Result 25887 states and 33873 transitions. [2021-11-03 05:18:52,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 05:18:52,228 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 05:18:52,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:18:52,289 INFO L225 Difference]: With dead ends: 25887 [2021-11-03 05:18:52,289 INFO L226 Difference]: Without dead ends: 24652 [2021-11-03 05:18:52,298 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 370 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 05:18:52,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24652 states. [2021-11-03 05:18:53,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24652 to 10141. [2021-11-03 05:18:53,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10141 states, 10123 states have (on average 1.2506174059073398) internal successors, (12660), 10140 states have internal predecessors, (12660), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:53,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10141 states to 10141 states and 12660 transitions. [2021-11-03 05:18:53,289 INFO L78 Accepts]: Start accepts. Automaton has 10141 states and 12660 transitions. Word has length 80 [2021-11-03 05:18:53,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:18:53,289 INFO L470 AbstractCegarLoop]: Abstraction has 10141 states and 12660 transitions. [2021-11-03 05:18:53,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.153846153846154) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:18:53,290 INFO L276 IsEmpty]: Start isEmpty. Operand 10141 states and 12660 transitions. [2021-11-03 05:18:53,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-03 05:18:53,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:18:53,305 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:18:53,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-03 05:18:53,305 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:18:53,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:18:53,306 INFO L85 PathProgramCache]: Analyzing trace with hash 345318540, now seen corresponding path program 1 times [2021-11-03 05:18:53,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:18:53,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749993865] [2021-11-03 05:18:53,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:18:53,307 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:18:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:18:53,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:18:53,573 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:18:53,573 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749993865] [2021-11-03 05:18:53,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749993865] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:18:53,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:18:53,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 05:18:53,574 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [542447435] [2021-11-03 05:18:53,574 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:18:53,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:18:53,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:18:53,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:18:53,575 INFO L87 Difference]: Start difference. First operand 10141 states and 12660 transitions. Second operand has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:00,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:00,598 INFO L93 Difference]: Finished difference Result 17277 states and 22097 transitions. [2021-11-03 05:19:00,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-03 05:19:00,598 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 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 80 [2021-11-03 05:19:00,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:00,637 INFO L225 Difference]: With dead ends: 17277 [2021-11-03 05:19:00,637 INFO L226 Difference]: Without dead ends: 16002 [2021-11-03 05:19:00,645 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=480, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:19:00,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16002 states. [2021-11-03 05:19:01,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16002 to 10148. [2021-11-03 05:19:01,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10148 states, 10130 states have (on average 1.2504442250740375) internal successors, (12667), 10147 states have internal predecessors, (12667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:01,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10148 states to 10148 states and 12667 transitions. [2021-11-03 05:19:01,523 INFO L78 Accepts]: Start accepts. Automaton has 10148 states and 12667 transitions. Word has length 80 [2021-11-03 05:19:01,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:01,523 INFO L470 AbstractCegarLoop]: Abstraction has 10148 states and 12667 transitions. [2021-11-03 05:19:01,524 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.88888888888889) internal successors, (80), 8 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:01,524 INFO L276 IsEmpty]: Start isEmpty. Operand 10148 states and 12667 transitions. [2021-11-03 05:19:01,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 05:19:01,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:01,538 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:01,538 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-03 05:19:01,538 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:19:01,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:01,539 INFO L85 PathProgramCache]: Analyzing trace with hash 1931324810, now seen corresponding path program 1 times [2021-11-03 05:19:01,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:01,539 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785485158] [2021-11-03 05:19:01,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:01,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:01,651 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:01,651 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:01,651 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785485158] [2021-11-03 05:19:01,652 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785485158] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:01,652 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:01,652 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 05:19:01,652 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855432899] [2021-11-03 05:19:01,653 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 05:19:01,653 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:01,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 05:19:01,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-03 05:19:01,654 INFO L87 Difference]: Start difference. First operand 10148 states and 12667 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:04,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:04,869 INFO L93 Difference]: Finished difference Result 22649 states and 28591 transitions. [2021-11-03 05:19:04,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 05:19:04,870 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 05:19:04,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:04,903 INFO L225 Difference]: With dead ends: 22649 [2021-11-03 05:19:04,903 INFO L226 Difference]: Without dead ends: 14755 [2021-11-03 05:19:04,918 INFO L786 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 [2021-11-03 05:19:04,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14755 states. [2021-11-03 05:19:05,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14755 to 14731. [2021-11-03 05:19:05,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14731 states, 14713 states have (on average 1.2520220213416706) internal successors, (18421), 14730 states have internal predecessors, (18421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:05,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14731 states to 14731 states and 18421 transitions. [2021-11-03 05:19:05,963 INFO L78 Accepts]: Start accepts. Automaton has 14731 states and 18421 transitions. Word has length 81 [2021-11-03 05:19:05,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:05,963 INFO L470 AbstractCegarLoop]: Abstraction has 14731 states and 18421 transitions. [2021-11-03 05:19:05,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:05,964 INFO L276 IsEmpty]: Start isEmpty. Operand 14731 states and 18421 transitions. [2021-11-03 05:19:05,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 05:19:05,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:05,981 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:05,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-03 05:19:05,982 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:19:05,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:05,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1417764063, now seen corresponding path program 1 times [2021-11-03 05:19:05,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:05,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1070757152] [2021-11-03 05:19:05,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:05,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:06,083 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:06,084 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:06,084 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1070757152] [2021-11-03 05:19:06,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1070757152] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:06,084 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:06,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:19:06,085 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043660134] [2021-11-03 05:19:06,085 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:19:06,085 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:06,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:19:06,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:19:06,086 INFO L87 Difference]: Start difference. First operand 14731 states and 18421 transitions. Second operand has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:07,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:07,712 INFO L93 Difference]: Finished difference Result 28945 states and 36330 transitions. [2021-11-03 05:19:07,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:19:07,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 05:19:07,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:07,742 INFO L225 Difference]: With dead ends: 28945 [2021-11-03 05:19:07,742 INFO L226 Difference]: Without dead ends: 17843 [2021-11-03 05:19:07,761 INFO L786 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 [2021-11-03 05:19:07,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17843 states. [2021-11-03 05:19:09,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17843 to 17814. [2021-11-03 05:19:09,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17814 states, 17796 states have (on average 1.2420206788042256) internal successors, (22103), 17813 states have internal predecessors, (22103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:09,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17814 states to 17814 states and 22103 transitions. [2021-11-03 05:19:09,163 INFO L78 Accepts]: Start accepts. Automaton has 17814 states and 22103 transitions. Word has length 81 [2021-11-03 05:19:09,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:09,163 INFO L470 AbstractCegarLoop]: Abstraction has 17814 states and 22103 transitions. [2021-11-03 05:19:09,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.0) internal successors, (81), 3 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:09,164 INFO L276 IsEmpty]: Start isEmpty. Operand 17814 states and 22103 transitions. [2021-11-03 05:19:09,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-03 05:19:09,181 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:09,181 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:09,181 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-03 05:19:09,182 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr18ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:19:09,182 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:09,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1047514158, now seen corresponding path program 1 times [2021-11-03 05:19:09,182 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:09,183 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471229047] [2021-11-03 05:19:09,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:09,183 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:09,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:09,585 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:09,585 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:09,586 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471229047] [2021-11-03 05:19:09,586 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471229047] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:09,586 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:09,586 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:19:09,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981176531] [2021-11-03 05:19:09,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:19:09,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:19:09,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:19:09,588 INFO L87 Difference]: Start difference. First operand 17814 states and 22103 transitions. Second operand has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:17,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:17,187 INFO L93 Difference]: Finished difference Result 38186 states and 49267 transitions. [2021-11-03 05:19:17,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-03 05:19:17,188 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 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 81 [2021-11-03 05:19:17,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:17,233 INFO L225 Difference]: With dead ends: 38186 [2021-11-03 05:19:17,233 INFO L226 Difference]: Without dead ends: 36435 [2021-11-03 05:19:17,241 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=229, Invalid=763, Unknown=0, NotChecked=0, Total=992 [2021-11-03 05:19:17,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36435 states. [2021-11-03 05:19:18,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36435 to 17761. [2021-11-03 05:19:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17761 states, 17744 states have (on average 1.2417718665464383) internal successors, (22034), 17760 states have internal predecessors, (22034), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:18,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17761 states to 17761 states and 22034 transitions. [2021-11-03 05:19:18,909 INFO L78 Accepts]: Start accepts. Automaton has 17761 states and 22034 transitions. Word has length 81 [2021-11-03 05:19:18,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:18,910 INFO L470 AbstractCegarLoop]: Abstraction has 17761 states and 22034 transitions. [2021-11-03 05:19:18,910 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.230769230769231) internal successors, (81), 12 states have internal predecessors, (81), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:18,910 INFO L276 IsEmpty]: Start isEmpty. Operand 17761 states and 22034 transitions. [2021-11-03 05:19:18,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 05:19:18,927 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:18,928 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:18,928 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-03 05:19:18,928 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:19:18,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:18,929 INFO L85 PathProgramCache]: Analyzing trace with hash 145335399, now seen corresponding path program 1 times [2021-11-03 05:19:18,929 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:18,929 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219200826] [2021-11-03 05:19:18,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:18,930 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:18,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:19,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:19,116 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:19,116 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219200826] [2021-11-03 05:19:19,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219200826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:19,117 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:19,117 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:19:19,117 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381615714] [2021-11-03 05:19:19,117 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:19:19,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:19:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:19:19,120 INFO L87 Difference]: Start difference. First operand 17761 states and 22034 transitions. Second operand has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 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) [2021-11-03 05:19:26,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:26,275 INFO L93 Difference]: Finished difference Result 22260 states and 27657 transitions. [2021-11-03 05:19:26,276 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-03 05:19:26,276 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 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) Word has length 82 [2021-11-03 05:19:26,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:26,302 INFO L225 Difference]: With dead ends: 22260 [2021-11-03 05:19:26,302 INFO L226 Difference]: Without dead ends: 22251 [2021-11-03 05:19:26,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2021-11-03 05:19:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22251 states. [2021-11-03 05:19:27,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22251 to 17761. [2021-11-03 05:19:27,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17761 states, 17744 states have (on average 1.2417155094679893) internal successors, (22033), 17760 states have internal predecessors, (22033), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:27,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17761 states to 17761 states and 22033 transitions. [2021-11-03 05:19:27,981 INFO L78 Accepts]: Start accepts. Automaton has 17761 states and 22033 transitions. Word has length 82 [2021-11-03 05:19:27,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:27,982 INFO L470 AbstractCegarLoop]: Abstraction has 17761 states and 22033 transitions. [2021-11-03 05:19:27,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.25) internal successors, (82), 7 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) [2021-11-03 05:19:27,982 INFO L276 IsEmpty]: Start isEmpty. Operand 17761 states and 22033 transitions. [2021-11-03 05:19:27,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-03 05:19:27,990 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:27,990 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:27,990 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-03 05:19:27,990 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:19:27,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:27,991 INFO L85 PathProgramCache]: Analyzing trace with hash 281132209, now seen corresponding path program 1 times [2021-11-03 05:19:27,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:27,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843304261] [2021-11-03 05:19:27,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:27,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:28,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:28,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:28,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843304261] [2021-11-03 05:19:28,222 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843304261] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:28,222 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:28,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 05:19:28,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998233625] [2021-11-03 05:19:28,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:19:28,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:19:28,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:19:28,223 INFO L87 Difference]: Start difference. First operand 17761 states and 22033 transitions. Second operand has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 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) [2021-11-03 05:19:38,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:38,435 INFO L93 Difference]: Finished difference Result 33515 states and 43071 transitions. [2021-11-03 05:19:38,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 05:19:38,436 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 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) Word has length 82 [2021-11-03 05:19:38,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:38,472 INFO L225 Difference]: With dead ends: 33515 [2021-11-03 05:19:38,472 INFO L226 Difference]: Without dead ends: 30087 [2021-11-03 05:19:38,483 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:19:38,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30087 states. [2021-11-03 05:19:40,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30087 to 17731. [2021-11-03 05:19:40,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17731 states, 17714 states have (on average 1.2418426103646834) internal successors, (21998), 17730 states have internal predecessors, (21998), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:40,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17731 states to 17731 states and 21998 transitions. [2021-11-03 05:19:40,571 INFO L78 Accepts]: Start accepts. Automaton has 17731 states and 21998 transitions. Word has length 82 [2021-11-03 05:19:40,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:40,572 INFO L470 AbstractCegarLoop]: Abstraction has 17731 states and 21998 transitions. [2021-11-03 05:19:40,572 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.11111111111111) internal successors, (82), 8 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) [2021-11-03 05:19:40,572 INFO L276 IsEmpty]: Start isEmpty. Operand 17731 states and 21998 transitions. [2021-11-03 05:19:40,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 05:19:40,580 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:40,580 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:40,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-03 05:19:40,580 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:19:40,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:40,581 INFO L85 PathProgramCache]: Analyzing trace with hash 334995124, now seen corresponding path program 1 times [2021-11-03 05:19:40,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:40,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594565082] [2021-11-03 05:19:40,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:40,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:40,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:40,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:40,986 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:40,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594565082] [2021-11-03 05:19:40,987 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594565082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:40,987 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:40,987 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:19:40,987 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633508785] [2021-11-03 05:19:40,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:19:40,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:19:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:19:40,988 INFO L87 Difference]: Start difference. First operand 17731 states and 21998 transitions. Second operand has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:52,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:19:52,892 INFO L93 Difference]: Finished difference Result 46841 states and 60970 transitions. [2021-11-03 05:19:52,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-03 05:19:52,892 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 05:19:52,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:19:52,944 INFO L225 Difference]: With dead ends: 46841 [2021-11-03 05:19:52,944 INFO L226 Difference]: Without dead ends: 46829 [2021-11-03 05:19:52,951 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 368 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=319, Invalid=1241, Unknown=0, NotChecked=0, Total=1560 [2021-11-03 05:19:52,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46829 states. [2021-11-03 05:19:55,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46829 to 17724. [2021-11-03 05:19:55,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17724 states, 17707 states have (on average 1.2418817416840797) internal successors, (21990), 17723 states have internal predecessors, (21990), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:55,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17724 states to 17724 states and 21990 transitions. [2021-11-03 05:19:55,281 INFO L78 Accepts]: Start accepts. Automaton has 17724 states and 21990 transitions. Word has length 83 [2021-11-03 05:19:55,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:19:55,282 INFO L470 AbstractCegarLoop]: Abstraction has 17724 states and 21990 transitions. [2021-11-03 05:19:55,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.384615384615385) internal successors, (83), 12 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:19:55,282 INFO L276 IsEmpty]: Start isEmpty. Operand 17724 states and 21990 transitions. [2021-11-03 05:19:55,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 05:19:55,290 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:19:55,291 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:19:55,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-03 05:19:55,291 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:19:55,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:19:55,291 INFO L85 PathProgramCache]: Analyzing trace with hash -116911058, now seen corresponding path program 1 times [2021-11-03 05:19:55,291 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:19:55,291 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799096299] [2021-11-03 05:19:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:19:55,292 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:19:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:19:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:19:55,731 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:19:55,731 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799096299] [2021-11-03 05:19:55,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799096299] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:19:55,731 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:19:55,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:19:55,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000718471] [2021-11-03 05:19:55,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:19:55,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:19:55,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:19:55,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:19:55,733 INFO L87 Difference]: Start difference. First operand 17724 states and 21990 transitions. Second operand has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:03,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:03,645 INFO L93 Difference]: Finished difference Result 31322 states and 40775 transitions. [2021-11-03 05:20:03,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 05:20:03,645 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 05:20:03,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:03,677 INFO L225 Difference]: With dead ends: 31322 [2021-11-03 05:20:03,678 INFO L226 Difference]: Without dead ends: 27891 [2021-11-03 05:20:03,686 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=176, Invalid=424, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:20:03,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27891 states. [2021-11-03 05:20:06,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27891 to 17687. [2021-11-03 05:20:06,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17687 states, 17671 states have (on average 1.242091562446947) internal successors, (21949), 17686 states have internal predecessors, (21949), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:06,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17687 states to 17687 states and 21949 transitions. [2021-11-03 05:20:06,225 INFO L78 Accepts]: Start accepts. Automaton has 17687 states and 21949 transitions. Word has length 83 [2021-11-03 05:20:06,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:06,225 INFO L470 AbstractCegarLoop]: Abstraction has 17687 states and 21949 transitions. [2021-11-03 05:20:06,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.916666666666667) internal successors, (83), 11 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:06,226 INFO L276 IsEmpty]: Start isEmpty. Operand 17687 states and 21949 transitions. [2021-11-03 05:20:06,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-03 05:20:06,238 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:06,238 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:06,238 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-03 05:20:06,238 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:20:06,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:06,239 INFO L85 PathProgramCache]: Analyzing trace with hash -1102446847, now seen corresponding path program 1 times [2021-11-03 05:20:06,239 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:06,239 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877330480] [2021-11-03 05:20:06,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:06,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:06,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:06,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:06,450 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:06,450 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877330480] [2021-11-03 05:20:06,450 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877330480] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:06,450 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:06,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 05:20:06,451 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433821915] [2021-11-03 05:20:06,451 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:20:06,451 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:06,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:20:06,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:20:06,452 INFO L87 Difference]: Start difference. First operand 17687 states and 21949 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:15,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:15,835 INFO L93 Difference]: Finished difference Result 22984 states and 29222 transitions. [2021-11-03 05:20:15,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 05:20:15,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 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 83 [2021-11-03 05:20:15,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:15,855 INFO L225 Difference]: With dead ends: 22984 [2021-11-03 05:20:15,855 INFO L226 Difference]: Without dead ends: 19290 [2021-11-03 05:20:15,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=142, Invalid=364, Unknown=0, NotChecked=0, Total=506 [2021-11-03 05:20:15,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19290 states. [2021-11-03 05:20:18,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19290 to 17393. [2021-11-03 05:20:18,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17393 states, 17377 states have (on average 1.2427346492490072) internal successors, (21595), 17392 states have internal predecessors, (21595), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:18,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17393 states to 17393 states and 21595 transitions. [2021-11-03 05:20:18,433 INFO L78 Accepts]: Start accepts. Automaton has 17393 states and 21595 transitions. Word has length 83 [2021-11-03 05:20:18,433 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:18,433 INFO L470 AbstractCegarLoop]: Abstraction has 17393 states and 21595 transitions. [2021-11-03 05:20:18,433 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:18,434 INFO L276 IsEmpty]: Start isEmpty. Operand 17393 states and 21595 transitions. [2021-11-03 05:20:18,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:20:18,446 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:18,446 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:18,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-03 05:20:18,446 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:20:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash -259980893, now seen corresponding path program 1 times [2021-11-03 05:20:18,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:18,447 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1168108920] [2021-11-03 05:20:18,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:18,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:18,659 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:18,660 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:18,660 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1168108920] [2021-11-03 05:20:18,663 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1168108920] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:18,664 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:18,664 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 05:20:18,664 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [731959732] [2021-11-03 05:20:18,665 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:20:18,665 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:18,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:20:18,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:20:18,666 INFO L87 Difference]: Start difference. First operand 17393 states and 21595 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:30,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:30,232 INFO L93 Difference]: Finished difference Result 31027 states and 39678 transitions. [2021-11-03 05:20:30,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-03 05:20:30,232 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 05:20:30,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:30,264 INFO L225 Difference]: With dead ends: 31027 [2021-11-03 05:20:30,264 INFO L226 Difference]: Without dead ends: 28567 [2021-11-03 05:20:30,271 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=474, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:20:30,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28567 states. [2021-11-03 05:20:32,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28567 to 17393. [2021-11-03 05:20:32,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17393 states, 17377 states have (on average 1.242677101916326) internal successors, (21594), 17392 states have internal predecessors, (21594), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:32,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17393 states to 17393 states and 21594 transitions. [2021-11-03 05:20:32,956 INFO L78 Accepts]: Start accepts. Automaton has 17393 states and 21594 transitions. Word has length 84 [2021-11-03 05:20:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:32,956 INFO L470 AbstractCegarLoop]: Abstraction has 17393 states and 21594 transitions. [2021-11-03 05:20:32,956 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 8 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:32,956 INFO L276 IsEmpty]: Start isEmpty. Operand 17393 states and 21594 transitions. [2021-11-03 05:20:32,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:20:32,969 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:32,969 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:32,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-03 05:20:32,969 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:20:32,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:32,970 INFO L85 PathProgramCache]: Analyzing trace with hash -659144821, now seen corresponding path program 1 times [2021-11-03 05:20:32,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:32,970 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061522553] [2021-11-03 05:20:32,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:32,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:33,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:33,123 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:33,123 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061522553] [2021-11-03 05:20:33,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061522553] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:33,123 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:33,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:20:33,124 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631164423] [2021-11-03 05:20:33,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:20:33,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:33,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:20:33,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:20:33,126 INFO L87 Difference]: Start difference. First operand 17393 states and 21594 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:42,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:42,003 INFO L93 Difference]: Finished difference Result 24171 states and 30331 transitions. [2021-11-03 05:20:42,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-03 05:20:42,004 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 05:20:42,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:42,027 INFO L225 Difference]: With dead ends: 24171 [2021-11-03 05:20:42,027 INFO L226 Difference]: Without dead ends: 24160 [2021-11-03 05:20:42,031 INFO L786 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 [2021-11-03 05:20:42,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24160 states. [2021-11-03 05:20:44,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24160 to 17393. [2021-11-03 05:20:44,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17393 states, 17377 states have (on average 1.2426195545836451) internal successors, (21593), 17392 states have internal predecessors, (21593), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:44,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17393 states to 17393 states and 21593 transitions. [2021-11-03 05:20:44,815 INFO L78 Accepts]: Start accepts. Automaton has 17393 states and 21593 transitions. Word has length 84 [2021-11-03 05:20:44,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:44,815 INFO L470 AbstractCegarLoop]: Abstraction has 17393 states and 21593 transitions. [2021-11-03 05:20:44,815 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:44,816 INFO L276 IsEmpty]: Start isEmpty. Operand 17393 states and 21593 transitions. [2021-11-03 05:20:44,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:20:44,824 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:44,824 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:44,824 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-03 05:20:44,825 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:20:44,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:44,825 INFO L85 PathProgramCache]: Analyzing trace with hash -171382137, now seen corresponding path program 1 times [2021-11-03 05:20:44,825 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:44,826 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419419514] [2021-11-03 05:20:44,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:44,826 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:44,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:44,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:44,906 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:44,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419419514] [2021-11-03 05:20:44,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419419514] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:44,907 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:44,907 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:20:44,907 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480061893] [2021-11-03 05:20:44,907 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:20:44,908 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:44,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:20:44,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:20:44,908 INFO L87 Difference]: Start difference. First operand 17393 states and 21593 transitions. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:48,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:20:48,341 INFO L93 Difference]: Finished difference Result 25276 states and 31896 transitions. [2021-11-03 05:20:48,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:20:48,342 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 05:20:48,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:20:48,357 INFO L225 Difference]: With dead ends: 25276 [2021-11-03 05:20:48,357 INFO L226 Difference]: Without dead ends: 15382 [2021-11-03 05:20:48,367 INFO L786 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 [2021-11-03 05:20:48,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15382 states. [2021-11-03 05:20:51,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15382 to 15368. [2021-11-03 05:20:51,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2578145350351655) internal successors, (19315), 15367 states have internal predecessors, (19315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:51,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19315 transitions. [2021-11-03 05:20:51,297 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19315 transitions. Word has length 84 [2021-11-03 05:20:51,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:20:51,297 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19315 transitions. [2021-11-03 05:20:51,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:20:51,297 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19315 transitions. [2021-11-03 05:20:51,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:20:51,304 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:20:51,304 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:20:51,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-03 05:20:51,305 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:20:51,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:20:51,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1017648630, now seen corresponding path program 1 times [2021-11-03 05:20:51,306 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:20:51,306 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [511252512] [2021-11-03 05:20:51,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:20:51,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:20:51,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:20:51,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:20:51,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:20:51,464 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [511252512] [2021-11-03 05:20:51,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [511252512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:20:51,465 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:20:51,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:20:51,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436009360] [2021-11-03 05:20:51,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:20:51,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:20:51,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:20:51,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:20:51,466 INFO L87 Difference]: Start difference. First operand 15368 states and 19315 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:00,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:00,833 INFO L93 Difference]: Finished difference Result 25711 states and 33029 transitions. [2021-11-03 05:21:00,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:21:00,834 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 05:21:00,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:00,858 INFO L225 Difference]: With dead ends: 25711 [2021-11-03 05:21:00,858 INFO L226 Difference]: Without dead ends: 24033 [2021-11-03 05:21:00,864 INFO L786 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 [2021-11-03 05:21:00,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24033 states. [2021-11-03 05:21:03,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24033 to 15368. [2021-11-03 05:21:03,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2577494139098724) internal successors, (19314), 15367 states have internal predecessors, (19314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:03,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19314 transitions. [2021-11-03 05:21:03,934 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19314 transitions. Word has length 84 [2021-11-03 05:21:03,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:03,935 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19314 transitions. [2021-11-03 05:21:03,935 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:03,935 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19314 transitions. [2021-11-03 05:21:03,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:21:03,942 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:03,942 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:03,942 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-03 05:21:03,942 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:21:03,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:03,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1298086344, now seen corresponding path program 1 times [2021-11-03 05:21:03,943 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:21:03,943 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636565137] [2021-11-03 05:21:03,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:03,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:21:03,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:04,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:21:04,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636565137] [2021-11-03 05:21:04,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636565137] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:04,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:04,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:21:04,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [764777742] [2021-11-03 05:21:04,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:21:04,102 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:21:04,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:21:04,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:21:04,102 INFO L87 Difference]: Start difference. First operand 15368 states and 19314 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:12,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:12,168 INFO L93 Difference]: Finished difference Result 20805 states and 26712 transitions. [2021-11-03 05:21:12,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:21:12,168 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 05:21:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:12,188 INFO L225 Difference]: With dead ends: 20805 [2021-11-03 05:21:12,188 INFO L226 Difference]: Without dead ends: 19709 [2021-11-03 05:21:12,192 INFO L786 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 [2021-11-03 05:21:12,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19709 states. [2021-11-03 05:21:15,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19709 to 15368. [2021-11-03 05:21:15,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2576842927845793) internal successors, (19313), 15367 states have internal predecessors, (19313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:15,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19313 transitions. [2021-11-03 05:21:15,248 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19313 transitions. Word has length 84 [2021-11-03 05:21:15,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:15,248 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19313 transitions. [2021-11-03 05:21:15,248 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:15,248 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19313 transitions. [2021-11-03 05:21:15,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-03 05:21:15,255 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:15,255 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:15,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-03 05:21:15,256 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:21:15,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:15,256 INFO L85 PathProgramCache]: Analyzing trace with hash -1021711736, now seen corresponding path program 1 times [2021-11-03 05:21:15,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:21:15,256 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1623641692] [2021-11-03 05:21:15,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:15,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:21:15,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:15,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:15,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:21:15,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1623641692] [2021-11-03 05:21:15,403 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1623641692] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:15,403 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:15,403 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:21:15,403 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050432192] [2021-11-03 05:21:15,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:21:15,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:21:15,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:21:15,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:21:15,405 INFO L87 Difference]: Start difference. First operand 15368 states and 19313 transitions. Second operand has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:26,236 INFO L93 Difference]: Finished difference Result 28658 states and 37039 transitions. [2021-11-03 05:21:26,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:21:26,236 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 84 [2021-11-03 05:21:26,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:26,265 INFO L225 Difference]: With dead ends: 28658 [2021-11-03 05:21:26,265 INFO L226 Difference]: Without dead ends: 26017 [2021-11-03 05:21:26,271 INFO L786 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 [2021-11-03 05:21:26,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26017 states. [2021-11-03 05:21:29,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26017 to 15368. [2021-11-03 05:21:29,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2576191716592864) internal successors, (19312), 15367 states have internal predecessors, (19312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:29,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19312 transitions. [2021-11-03 05:21:29,462 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19312 transitions. Word has length 84 [2021-11-03 05:21:29,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:29,462 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19312 transitions. [2021-11-03 05:21:29,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.5) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:29,462 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19312 transitions. [2021-11-03 05:21:29,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:21:29,469 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:29,470 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:29,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-03 05:21:29,470 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:21:29,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:29,470 INFO L85 PathProgramCache]: Analyzing trace with hash -1746059872, now seen corresponding path program 1 times [2021-11-03 05:21:29,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:21:29,471 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876636531] [2021-11-03 05:21:29,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:29,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:21:29,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:29,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:29,619 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:21:29,619 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876636531] [2021-11-03 05:21:29,619 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876636531] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:29,619 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:29,619 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:21:29,620 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190147081] [2021-11-03 05:21:29,620 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:21:29,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:21:29,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:21:29,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:21:29,621 INFO L87 Difference]: Start difference. First operand 15368 states and 19312 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:41,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:41,160 INFO L93 Difference]: Finished difference Result 30626 states and 39738 transitions. [2021-11-03 05:21:41,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:21:41,160 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:21:41,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:41,191 INFO L225 Difference]: With dead ends: 30626 [2021-11-03 05:21:41,191 INFO L226 Difference]: Without dead ends: 27265 [2021-11-03 05:21:41,196 INFO L786 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 [2021-11-03 05:21:41,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27265 states. [2021-11-03 05:21:44,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27265 to 15368. [2021-11-03 05:21:44,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15368 states, 15356 states have (on average 1.2575540505339933) internal successors, (19311), 15367 states have internal predecessors, (19311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:44,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15368 states to 15368 states and 19311 transitions. [2021-11-03 05:21:44,477 INFO L78 Accepts]: Start accepts. Automaton has 15368 states and 19311 transitions. Word has length 85 [2021-11-03 05:21:44,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:44,477 INFO L470 AbstractCegarLoop]: Abstraction has 15368 states and 19311 transitions. [2021-11-03 05:21:44,477 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:44,478 INFO L276 IsEmpty]: Start isEmpty. Operand 15368 states and 19311 transitions. [2021-11-03 05:21:44,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:21:44,485 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:44,485 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:44,485 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-03 05:21:44,485 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:21:44,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:44,485 INFO L85 PathProgramCache]: Analyzing trace with hash 534088540, now seen corresponding path program 1 times [2021-11-03 05:21:44,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:21:44,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052707814] [2021-11-03 05:21:44,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:44,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:21:44,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:44,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:44,646 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:21:44,646 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052707814] [2021-11-03 05:21:44,647 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052707814] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:44,647 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:44,647 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:21:44,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390435408] [2021-11-03 05:21:44,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:21:44,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:21:44,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:21:44,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:21:44,651 INFO L87 Difference]: Start difference. First operand 15368 states and 19311 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:53,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:21:53,047 INFO L93 Difference]: Finished difference Result 22695 states and 29307 transitions. [2021-11-03 05:21:53,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:21:53,048 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:21:53,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:21:53,068 INFO L225 Difference]: With dead ends: 22695 [2021-11-03 05:21:53,068 INFO L226 Difference]: Without dead ends: 20516 [2021-11-03 05:21:53,073 INFO L786 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 [2021-11-03 05:21:53,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20516 states. [2021-11-03 05:21:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20516 to 15367. [2021-11-03 05:21:56,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15355 states have (on average 1.2575056984695538) internal successors, (19309), 15366 states have internal predecessors, (19309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:56,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 19309 transitions. [2021-11-03 05:21:56,276 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 19309 transitions. Word has length 85 [2021-11-03 05:21:56,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:21:56,276 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 19309 transitions. [2021-11-03 05:21:56,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:21:56,276 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 19309 transitions. [2021-11-03 05:21:56,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:21:56,285 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:21:56,285 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:21:56,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-03 05:21:56,286 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:21:56,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:21:56,286 INFO L85 PathProgramCache]: Analyzing trace with hash -609990958, now seen corresponding path program 1 times [2021-11-03 05:21:56,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:21:56,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771888512] [2021-11-03 05:21:56,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:21:56,287 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:21:56,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:21:56,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:21:56,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:21:56,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771888512] [2021-11-03 05:21:56,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771888512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:21:56,423 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:21:56,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:21:56,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040500742] [2021-11-03 05:21:56,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:21:56,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:21:56,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:21:56,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:21:56,425 INFO L87 Difference]: Start difference. First operand 15367 states and 19309 transitions. Second operand has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:07,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:07,020 INFO L93 Difference]: Finished difference Result 27469 states and 35423 transitions. [2021-11-03 05:22:07,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:22:07,021 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:22:07,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:07,049 INFO L225 Difference]: With dead ends: 27469 [2021-11-03 05:22:07,049 INFO L226 Difference]: Without dead ends: 25280 [2021-11-03 05:22:07,054 INFO L786 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 [2021-11-03 05:22:07,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25280 states. [2021-11-03 05:22:10,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25280 to 15367. [2021-11-03 05:22:10,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15367 states, 15355 states have (on average 1.2574405731032237) internal successors, (19308), 15366 states have internal predecessors, (19308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:10,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15367 states to 15367 states and 19308 transitions. [2021-11-03 05:22:10,360 INFO L78 Accepts]: Start accepts. Automaton has 15367 states and 19308 transitions. Word has length 85 [2021-11-03 05:22:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:10,360 INFO L470 AbstractCegarLoop]: Abstraction has 15367 states and 19308 transitions. [2021-11-03 05:22:10,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.625) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 15367 states and 19308 transitions. [2021-11-03 05:22:10,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:22:10,368 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:10,368 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:10,368 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-03 05:22:10,369 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:22:10,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:10,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1552046566, now seen corresponding path program 1 times [2021-11-03 05:22:10,369 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:10,369 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415567324] [2021-11-03 05:22:10,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:10,369 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:10,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:10,463 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:10,463 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415567324] [2021-11-03 05:22:10,463 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415567324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:10,463 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:10,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:22:10,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614425948] [2021-11-03 05:22:10,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:22:10,464 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:10,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:22:10,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:22:10,465 INFO L87 Difference]: Start difference. First operand 15367 states and 19308 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:16,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:16,099 INFO L93 Difference]: Finished difference Result 30345 states and 38922 transitions. [2021-11-03 05:22:16,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:22:16,099 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:22:16,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:16,123 INFO L225 Difference]: With dead ends: 30345 [2021-11-03 05:22:16,123 INFO L226 Difference]: Without dead ends: 23116 [2021-11-03 05:22:16,129 INFO L786 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 [2021-11-03 05:22:16,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23116 states. [2021-11-03 05:22:21,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23116 to 23100. [2021-11-03 05:22:21,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23100 states, 23088 states have (on average 1.2647262647262647) internal successors, (29200), 23099 states have internal predecessors, (29200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:21,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23100 states to 23100 states and 29200 transitions. [2021-11-03 05:22:21,655 INFO L78 Accepts]: Start accepts. Automaton has 23100 states and 29200 transitions. Word has length 85 [2021-11-03 05:22:21,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:21,655 INFO L470 AbstractCegarLoop]: Abstraction has 23100 states and 29200 transitions. [2021-11-03 05:22:21,656 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:21,656 INFO L276 IsEmpty]: Start isEmpty. Operand 23100 states and 29200 transitions. [2021-11-03 05:22:21,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:22:21,665 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:21,665 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:21,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-03 05:22:21,666 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:22:21,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:21,666 INFO L85 PathProgramCache]: Analyzing trace with hash 457131040, now seen corresponding path program 1 times [2021-11-03 05:22:21,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:21,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640368292] [2021-11-03 05:22:21,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:21,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:21,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:22,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:22,008 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:22,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640368292] [2021-11-03 05:22:22,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640368292] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:22,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:22,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-03 05:22:22,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658878195] [2021-11-03 05:22:22,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-03 05:22:22,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:22,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-03 05:22:22,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-11-03 05:22:22,010 INFO L87 Difference]: Start difference. First operand 23100 states and 29200 transitions. Second operand has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:36,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:36,656 INFO L93 Difference]: Finished difference Result 42400 states and 55578 transitions. [2021-11-03 05:22:36,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 05:22:36,656 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:22:36,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:36,701 INFO L225 Difference]: With dead ends: 42400 [2021-11-03 05:22:36,701 INFO L226 Difference]: Without dead ends: 38233 [2021-11-03 05:22:36,708 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=185, Invalid=465, Unknown=0, NotChecked=0, Total=650 [2021-11-03 05:22:36,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38233 states. [2021-11-03 05:22:42,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38233 to 22999. [2021-11-03 05:22:42,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22999 states, 22988 states have (on average 1.2654428397424744) internal successors, (29090), 22998 states have internal predecessors, (29090), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:42,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22999 states to 22999 states and 29090 transitions. [2021-11-03 05:22:42,569 INFO L78 Accepts]: Start accepts. Automaton has 22999 states and 29090 transitions. Word has length 85 [2021-11-03 05:22:42,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:22:42,569 INFO L470 AbstractCegarLoop]: Abstraction has 22999 states and 29090 transitions. [2021-11-03 05:22:42,569 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.538461538461538) internal successors, (85), 12 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:42,569 INFO L276 IsEmpty]: Start isEmpty. Operand 22999 states and 29090 transitions. [2021-11-03 05:22:42,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:22:42,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:22:42,579 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:22:42,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-03 05:22:42,579 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:22:42,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:22:42,580 INFO L85 PathProgramCache]: Analyzing trace with hash -386055985, now seen corresponding path program 1 times [2021-11-03 05:22:42,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:22:42,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [264169502] [2021-11-03 05:22:42,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:22:42,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:22:42,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:22:42,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:22:42,757 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:22:42,757 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [264169502] [2021-11-03 05:22:42,757 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [264169502] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:22:42,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:22:42,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 05:22:42,758 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090365092] [2021-11-03 05:22:42,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:22:42,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:22:42,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:22:42,759 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:22:42,759 INFO L87 Difference]: Start difference. First operand 22999 states and 29090 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:22:56,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:22:56,609 INFO L93 Difference]: Finished difference Result 42739 states and 55809 transitions. [2021-11-03 05:22:56,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 05:22:56,609 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:22:56,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:22:56,647 INFO L225 Difference]: With dead ends: 42739 [2021-11-03 05:22:56,647 INFO L226 Difference]: Without dead ends: 33025 [2021-11-03 05:22:56,659 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=127, Invalid=335, Unknown=0, NotChecked=0, Total=462 [2021-11-03 05:22:56,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33025 states. [2021-11-03 05:23:02,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33025 to 22999. [2021-11-03 05:23:02,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22999 states, 22988 states have (on average 1.2653993387854532) internal successors, (29089), 22998 states have internal predecessors, (29089), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:02,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22999 states to 22999 states and 29089 transitions. [2021-11-03 05:23:02,895 INFO L78 Accepts]: Start accepts. Automaton has 22999 states and 29089 transitions. Word has length 85 [2021-11-03 05:23:02,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:02,896 INFO L470 AbstractCegarLoop]: Abstraction has 22999 states and 29089 transitions. [2021-11-03 05:23:02,896 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 8 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:02,896 INFO L276 IsEmpty]: Start isEmpty. Operand 22999 states and 29089 transitions. [2021-11-03 05:23:02,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:23:02,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:02,905 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:02,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-03 05:23:02,906 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:23:02,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:02,906 INFO L85 PathProgramCache]: Analyzing trace with hash -954958880, now seen corresponding path program 1 times [2021-11-03 05:23:02,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:02,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1461413752] [2021-11-03 05:23:02,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:02,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:02,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:23:02,989 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:02,989 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1461413752] [2021-11-03 05:23:02,989 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1461413752] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:02,989 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:02,989 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:23:02,990 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394102124] [2021-11-03 05:23:02,990 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:23:02,990 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:02,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:23:02,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:23:02,991 INFO L87 Difference]: Start difference. First operand 22999 states and 29089 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:11,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:11,373 INFO L93 Difference]: Finished difference Result 37599 states and 49057 transitions. [2021-11-03 05:23:11,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:23:11,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:23:11,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:11,405 INFO L225 Difference]: With dead ends: 37599 [2021-11-03 05:23:11,405 INFO L226 Difference]: Without dead ends: 26870 [2021-11-03 05:23:11,418 INFO L786 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 [2021-11-03 05:23:11,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26870 states. [2021-11-03 05:23:18,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26870 to 22343. [2021-11-03 05:23:18,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22343 states, 22332 states have (on average 1.2852856886978328) internal successors, (28703), 22342 states have internal predecessors, (28703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:18,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22343 states to 22343 states and 28703 transitions. [2021-11-03 05:23:18,774 INFO L78 Accepts]: Start accepts. Automaton has 22343 states and 28703 transitions. Word has length 85 [2021-11-03 05:23:18,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:18,774 INFO L470 AbstractCegarLoop]: Abstraction has 22343 states and 28703 transitions. [2021-11-03 05:23:18,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:18,774 INFO L276 IsEmpty]: Start isEmpty. Operand 22343 states and 28703 transitions. [2021-11-03 05:23:18,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:23:18,782 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:18,783 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:18,783 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-03 05:23:18,783 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:23:18,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:18,783 INFO L85 PathProgramCache]: Analyzing trace with hash -1869392622, now seen corresponding path program 1 times [2021-11-03 05:23:18,783 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:18,783 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [608592821] [2021-11-03 05:23:18,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:18,784 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:18,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:19,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:23:19,117 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:19,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [608592821] [2021-11-03 05:23:19,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [608592821] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:19,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:19,118 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-03 05:23:19,118 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492022150] [2021-11-03 05:23:19,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-03 05:23:19,119 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:19,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-03 05:23:19,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2021-11-03 05:23:19,119 INFO L87 Difference]: Start difference. First operand 22343 states and 28703 transitions. Second operand has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:34,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:34,354 INFO L93 Difference]: Finished difference Result 33787 states and 44167 transitions. [2021-11-03 05:23:34,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-03 05:23:34,355 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:23:34,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:34,391 INFO L225 Difference]: With dead ends: 33787 [2021-11-03 05:23:34,391 INFO L226 Difference]: Without dead ends: 31849 [2021-11-03 05:23:34,397 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=153, Invalid=447, Unknown=0, NotChecked=0, Total=600 [2021-11-03 05:23:34,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31849 states. [2021-11-03 05:23:42,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31849 to 22343. [2021-11-03 05:23:42,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22343 states, 22332 states have (on average 1.2851961311123052) internal successors, (28701), 22342 states have internal predecessors, (28701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:42,077 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22343 states to 22343 states and 28701 transitions. [2021-11-03 05:23:42,078 INFO L78 Accepts]: Start accepts. Automaton has 22343 states and 28701 transitions. Word has length 85 [2021-11-03 05:23:42,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:23:42,078 INFO L470 AbstractCegarLoop]: Abstraction has 22343 states and 28701 transitions. [2021-11-03 05:23:42,078 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.083333333333333) internal successors, (85), 11 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:42,078 INFO L276 IsEmpty]: Start isEmpty. Operand 22343 states and 28701 transitions. [2021-11-03 05:23:42,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:23:42,086 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:23:42,087 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:23:42,087 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-03 05:23:42,087 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr15ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:23:42,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:23:42,087 INFO L85 PathProgramCache]: Analyzing trace with hash -9657187, now seen corresponding path program 1 times [2021-11-03 05:23:42,087 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:23:42,087 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252261200] [2021-11-03 05:23:42,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:23:42,088 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:23:42,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:23:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:23:42,166 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:23:42,166 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252261200] [2021-11-03 05:23:42,166 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252261200] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:23:42,166 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:23:42,166 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:23:42,166 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575627318] [2021-11-03 05:23:42,167 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:23:42,167 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:23:42,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:23:42,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:23:42,168 INFO L87 Difference]: Start difference. First operand 22343 states and 28701 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:23:53,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:23:53,511 INFO L93 Difference]: Finished difference Result 40469 states and 53348 transitions. [2021-11-03 05:23:53,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:23:53,512 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:23:53,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:23:53,544 INFO L225 Difference]: With dead ends: 40469 [2021-11-03 05:23:53,544 INFO L226 Difference]: Without dead ends: 27655 [2021-11-03 05:23:53,558 INFO L786 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 [2021-11-03 05:23:53,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27655 states. [2021-11-03 05:24:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27655 to 22786. [2021-11-03 05:24:03,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22786 states, 22775 states have (on average 1.295411635565313) internal successors, (29503), 22785 states have internal predecessors, (29503), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22786 states to 22786 states and 29503 transitions. [2021-11-03 05:24:03,186 INFO L78 Accepts]: Start accepts. Automaton has 22786 states and 29503 transitions. Word has length 85 [2021-11-03 05:24:03,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:03,186 INFO L470 AbstractCegarLoop]: Abstraction has 22786 states and 29503 transitions. [2021-11-03 05:24:03,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:03,186 INFO L276 IsEmpty]: Start isEmpty. Operand 22786 states and 29503 transitions. [2021-11-03 05:24:03,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2021-11-03 05:24:03,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:03,194 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:24:03,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-03 05:24:03,194 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr17ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:24:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:03,194 INFO L85 PathProgramCache]: Analyzing trace with hash 2006860160, now seen corresponding path program 1 times [2021-11-03 05:24:03,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:03,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135352524] [2021-11-03 05:24:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:03,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:03,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:03,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:03,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:03,273 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135352524] [2021-11-03 05:24:03,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [135352524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:03,273 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:03,273 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 05:24:03,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400150262] [2021-11-03 05:24:03,274 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 05:24:03,274 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:03,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 05:24:03,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 05:24:03,275 INFO L87 Difference]: Start difference. First operand 22786 states and 29503 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:20,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:24:20,584 INFO L93 Difference]: Finished difference Result 53628 states and 70378 transitions. [2021-11-03 05:24:20,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 05:24:20,585 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 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 85 [2021-11-03 05:24:20,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:24:20,630 INFO L225 Difference]: With dead ends: 53628 [2021-11-03 05:24:20,630 INFO L226 Difference]: Without dead ends: 37741 [2021-11-03 05:24:20,645 INFO L786 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 [2021-11-03 05:24:20,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37741 states. [2021-11-03 05:24:38,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37741 to 37727. [2021-11-03 05:24:38,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37727 states, 37716 states have (on average 1.2942252624880688) internal successors, (48813), 37726 states have internal predecessors, (48813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:38,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37727 states to 37727 states and 48813 transitions. [2021-11-03 05:24:38,586 INFO L78 Accepts]: Start accepts. Automaton has 37727 states and 48813 transitions. Word has length 85 [2021-11-03 05:24:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:24:38,586 INFO L470 AbstractCegarLoop]: Abstraction has 37727 states and 48813 transitions. [2021-11-03 05:24:38,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:24:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 37727 states and 48813 transitions. [2021-11-03 05:24:38,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 05:24:38,595 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:24:38,596 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:24:38,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-03 05:24:38,596 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:24:38,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:24:38,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1166777784, now seen corresponding path program 1 times [2021-11-03 05:24:38,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:24:38,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1058540415] [2021-11-03 05:24:38,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:24:38,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:24:38,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:24:39,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:24:39,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:24:39,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1058540415] [2021-11-03 05:24:39,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1058540415] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:24:39,608 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:24:39,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2021-11-03 05:24:39,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231544068] [2021-11-03 05:24:39,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-03 05:24:39,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:24:39,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-03 05:24:39,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2021-11-03 05:24:39,610 INFO L87 Difference]: Start difference. First operand 37727 states and 48813 transitions. Second operand has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:34,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:25:34,941 INFO L93 Difference]: Finished difference Result 88409 states and 114886 transitions. [2021-11-03 05:25:34,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-11-03 05:25:34,942 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-03 05:25:34,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:25:35,069 INFO L225 Difference]: With dead ends: 88409 [2021-11-03 05:25:35,069 INFO L226 Difference]: Without dead ends: 85091 [2021-11-03 05:25:35,087 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 320 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=422, Invalid=1558, Unknown=0, NotChecked=0, Total=1980 [2021-11-03 05:25:35,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85091 states. [2021-11-03 05:25:54,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85091 to 37707. [2021-11-03 05:25:54,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37707 states, 37696 states have (on average 1.2942752546689305) internal successors, (48789), 37706 states have internal predecessors, (48789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:54,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37707 states to 37707 states and 48789 transitions. [2021-11-03 05:25:54,383 INFO L78 Accepts]: Start accepts. Automaton has 37707 states and 48789 transitions. Word has length 86 [2021-11-03 05:25:54,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:25:54,383 INFO L470 AbstractCegarLoop]: Abstraction has 37707 states and 48789 transitions. [2021-11-03 05:25:54,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 4.3) internal successors, (86), 19 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:25:54,384 INFO L276 IsEmpty]: Start isEmpty. Operand 37707 states and 48789 transitions. [2021-11-03 05:25:54,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 05:25:54,392 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:25:54,393 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:25:54,393 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-03 05:25:54,393 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:25:54,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:25:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash 946314104, now seen corresponding path program 1 times [2021-11-03 05:25:54,393 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:25:54,393 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1471860588] [2021-11-03 05:25:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:25:54,394 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:25:54,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:25:54,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:25:54,533 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:25:54,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1471860588] [2021-11-03 05:25:54,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1471860588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:25:54,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:25:54,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-03 05:25:54,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577061190] [2021-11-03 05:25:54,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-03 05:25:54,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:25:54,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-03 05:25:54,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-03 05:25:54,538 INFO L87 Difference]: Start difference. First operand 37707 states and 48789 transitions. Second operand has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:38,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 05:26:38,775 INFO L93 Difference]: Finished difference Result 69438 states and 90126 transitions. [2021-11-03 05:26:38,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-03 05:26:38,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 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 86 [2021-11-03 05:26:38,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 05:26:38,884 INFO L225 Difference]: With dead ends: 69438 [2021-11-03 05:26:38,884 INFO L226 Difference]: Without dead ends: 66060 [2021-11-03 05:26:38,902 INFO L786 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 [2021-11-03 05:26:38,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66060 states. [2021-11-03 05:26:58,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66060 to 37693. [2021-11-03 05:26:58,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 37693 states, 37682 states have (on average 1.294251897457672) internal successors, (48770), 37692 states have internal predecessors, (48770), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37693 states to 37693 states and 48770 transitions. [2021-11-03 05:26:58,770 INFO L78 Accepts]: Start accepts. Automaton has 37693 states and 48770 transitions. Word has length 86 [2021-11-03 05:26:58,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 05:26:58,771 INFO L470 AbstractCegarLoop]: Abstraction has 37693 states and 48770 transitions. [2021-11-03 05:26:58,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.75) internal successors, (86), 7 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 05:26:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 37693 states and 48770 transitions. [2021-11-03 05:26:58,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-03 05:26:58,783 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 05:26:58,784 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 05:26:58,784 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-03 05:26:58,784 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 16 more)] === [2021-11-03 05:26:58,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 05:26:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash -884520293, now seen corresponding path program 1 times [2021-11-03 05:26:58,785 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-03 05:26:58,785 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260040660] [2021-11-03 05:26:58,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 05:26:58,785 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 05:26:58,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 05:26:58,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 05:26:58,970 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-03 05:26:58,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260040660] [2021-11-03 05:26:58,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260040660] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 05:26:58,971 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 05:26:58,971 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-03 05:26:58,971 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467746955] [2021-11-03 05:26:58,971 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-03 05:26:58,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-03 05:26:58,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-03 05:26:58,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-03 05:26:58,973 INFO L87 Difference]: Start difference. First operand 37693 states and 48770 transitions. Second operand has 9 states, 9 states have (on average 9.555555555555555) internal successors, (86), 8 states have internal predecessors, (86), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)