./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/config/TaipanReach.xml -i ../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8 --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 7ee0c03ea7571fbf8ad45188f5238b16bf8ad4a8ddf56fc7d5d394e59af71d1f --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 01:17:35,588 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 01:17:35,589 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 01:17:35,626 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 01:17:35,627 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 01:17:35,628 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 01:17:35,636 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 01:17:35,638 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 01:17:35,641 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 01:17:35,642 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 01:17:35,643 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 01:17:35,644 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 01:17:35,647 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 01:17:35,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 01:17:35,656 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 01:17:35,658 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 01:17:35,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 01:17:35,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 01:17:35,666 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 01:17:35,677 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 01:17:35,682 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 01:17:35,685 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 01:17:35,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 01:17:35,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 01:17:35,693 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 01:17:35,694 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 01:17:35,694 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 01:17:35,699 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 01:17:35,700 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 01:17:35,701 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 01:17:35,702 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 01:17:35,702 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 01:17:35,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 01:17:35,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 01:17:35,705 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 01:17:35,706 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 01:17:35,707 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 01:17:35,707 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 01:17:35,708 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 01:17:35,709 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 01:17:35,709 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 01:17:35,713 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-07 01:17:35,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 01:17:35,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 01:17:35,768 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-07 01:17:35,769 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-07 01:17:35,769 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-07 01:17:35,769 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-07 01:17:35,769 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-07 01:17:35,770 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-07 01:17:35,770 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-07 01:17:35,770 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-07 01:17:35,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-07 01:17:35,771 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-07 01:17:35,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-07 01:17:35,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-07 01:17:35,772 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-07 01:17:35,773 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 01:17:35,773 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 01:17:35,773 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 01:17:35,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 01:17:35,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 01:17:35,774 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 01:17:35,774 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 01:17:35,774 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 01:17:35,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-07 01:17:35,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 01:17:35,775 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 01:17:35,775 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 01:17:35,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 01:17:35,776 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 01:17:35,777 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 01:17:35,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:35,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 01:17:35,778 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 01:17:35,778 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 01:17:35,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-07 01:17:35,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 01:17:35,779 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 01:17:35,779 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 01:17:35,779 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-07 01:17:35,780 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7ee0c03ea7571fbf8ad45188f5238b16bf8ad4a8ddf56fc7d5d394e59af71d1f [2021-11-07 01:17:36,103 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 01:17:36,145 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 01:17:36,148 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 01:17:36,149 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 01:17:36,150 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 01:17:36,151 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/../../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-07 01:17:36,240 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/data/f0d655151/0fe3096a2cf2418484d0f40d7c98b944/FLAGcad2ba9f6 [2021-11-07 01:17:37,042 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 01:17:37,045 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-07 01:17:37,088 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/data/f0d655151/0fe3096a2cf2418484d0f40d7c98b944/FLAGcad2ba9f6 [2021-11-07 01:17:37,130 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/data/f0d655151/0fe3096a2cf2418484d0f40d7c98b944 [2021-11-07 01:17:37,133 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 01:17:37,136 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 01:17:37,138 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:37,138 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 01:17:37,142 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 01:17:37,142 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:37" (1/1) ... [2021-11-07 01:17:37,145 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8ce1833 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:37, skipping insertion in model container [2021-11-07 01:17:37,145 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 01:17:37" (1/1) ... [2021-11-07 01:17:37,152 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 01:17:37,302 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 01:17:38,013 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[37768,37781] [2021-11-07 01:17:38,106 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[53783,53796] [2021-11-07 01:17:38,137 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[61800,61813] [2021-11-07 01:17:38,152 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[65782,65795] [2021-11-07 01:17:38,167 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[69649,69662] [2021-11-07 01:17:38,224 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[86712,86725] [2021-11-07 01:17:38,252 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[94766,94779] [2021-11-07 01:17:38,266 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[98785,98798] [2021-11-07 01:17:38,281 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[102689,102702] [2021-11-07 01:17:38,297 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[107203,107216] [2021-11-07 01:17:38,312 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[111131,111144] [2021-11-07 01:17:38,327 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[115150,115163] [2021-11-07 01:17:38,341 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[119054,119067] [2021-11-07 01:17:38,356 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[123189,123202] [2021-11-07 01:17:38,370 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127260,127273] [2021-11-07 01:17:38,394 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[131260,131273] [2021-11-07 01:17:38,486 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:38,520 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 01:17:38,800 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[37768,37781] [2021-11-07 01:17:38,845 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[53783,53796] [2021-11-07 01:17:38,872 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[61800,61813] [2021-11-07 01:17:38,884 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[65782,65795] [2021-11-07 01:17:38,896 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[69649,69662] [2021-11-07 01:17:38,941 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[86712,86725] [2021-11-07 01:17:38,961 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[94766,94779] [2021-11-07 01:17:38,972 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[98785,98798] [2021-11-07 01:17:38,983 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[102689,102702] [2021-11-07 01:17:38,996 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[107203,107216] [2021-11-07 01:17:39,006 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[111131,111144] [2021-11-07 01:17:39,019 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[115150,115163] [2021-11-07 01:17:39,030 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[119054,119067] [2021-11-07 01:17:39,044 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[123189,123202] [2021-11-07 01:17:39,058 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[127260,127273] [2021-11-07 01:17:39,068 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_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c[131260,131273] [2021-11-07 01:17:39,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 01:17:39,130 INFO L208 MainTranslator]: Completed translation [2021-11-07 01:17:39,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39 WrapperNode [2021-11-07 01:17:39,130 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 01:17:39,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:39,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 01:17:39,132 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 01:17:39,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,198 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,378 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 01:17:39,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 01:17:39,379 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 01:17:39,379 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 01:17:39,388 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,388 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,418 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,418 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,485 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,521 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,542 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 01:17:39,543 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 01:17:39,543 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 01:17:39,543 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 01:17:39,544 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (1/1) ... [2021-11-07 01:17:39,551 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 01:17:39,561 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:17:39,572 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 01:17:39,600 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 01:17:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 01:17:39,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 01:17:39,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 01:17:39,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 01:17:43,135 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 01:17:43,135 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2021-11-07 01:17:43,141 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:43 BoogieIcfgContainer [2021-11-07 01:17:43,142 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 01:17:43,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 01:17:43,144 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 01:17:43,148 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 01:17:43,148 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 01:17:37" (1/3) ... [2021-11-07 01:17:43,149 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c43a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:43, skipping insertion in model container [2021-11-07 01:17:43,149 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 01:17:39" (2/3) ... [2021-11-07 01:17:43,150 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12c43a70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 01:17:43, skipping insertion in model container [2021-11-07 01:17:43,150 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 01:17:43" (3/3) ... [2021-11-07 01:17:43,153 INFO L111 eAbstractionObserver]: Analyzing ICFG pals_lcr.5.1.ufo.BOUNDED-10.pals.c.v+sep-reducer.c [2021-11-07 01:17:43,159 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 01:17:43,159 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 16 error locations. [2021-11-07 01:17:43,227 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 01:17:43,232 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 [2021-11-07 01:17:43,232 INFO L340 AbstractCegarLoop]: Starting to check reachability of 16 error locations. [2021-11-07 01:17:43,276 INFO L276 IsEmpty]: Start isEmpty. Operand has 1170 states, 1153 states have (on average 1.7710320901994796) internal successors, (2042), 1169 states have internal predecessors, (2042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:17:43,307 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:43,308 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] [2021-11-07 01:17:43,308 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:43,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:43,313 INFO L85 PathProgramCache]: Analyzing trace with hash -959725519, now seen corresponding path program 1 times [2021-11-07 01:17:43,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:43,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509412918] [2021-11-07 01:17:43,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:43,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:43,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:43,750 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:43,751 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509412918] [2021-11-07 01:17:43,751 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509412918] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:43,751 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:43,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:17:43,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774026079] [2021-11-07 01:17:43,758 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:17:43,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:43,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:17:43,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:17:43,775 INFO L87 Difference]: Start difference. First operand has 1170 states, 1153 states have (on average 1.7710320901994796) internal successors, (2042), 1169 states have internal predecessors, (2042), 0 states have call successors, (0), 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 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:44,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:44,570 INFO L93 Difference]: Finished difference Result 1365 states and 2339 transitions. [2021-11-07 01:17:44,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:44,571 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:17:44,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:44,589 INFO L225 Difference]: With dead ends: 1365 [2021-11-07 01:17:44,590 INFO L226 Difference]: Without dead ends: 788 [2021-11-07 01:17:44,595 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 [2021-11-07 01:17:44,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 788 states. [2021-11-07 01:17:44,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 788 to 788. [2021-11-07 01:17:44,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 788 states, 772 states have (on average 1.2681347150259068) internal successors, (979), 787 states have internal predecessors, (979), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:44,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 788 states to 788 states and 979 transitions. [2021-11-07 01:17:44,680 INFO L78 Accepts]: Start accepts. Automaton has 788 states and 979 transitions. Word has length 72 [2021-11-07 01:17:44,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:44,681 INFO L470 AbstractCegarLoop]: Abstraction has 788 states and 979 transitions. [2021-11-07 01:17:44,681 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:44,681 INFO L276 IsEmpty]: Start isEmpty. Operand 788 states and 979 transitions. [2021-11-07 01:17:44,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:17:44,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:44,686 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] [2021-11-07 01:17:44,686 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 01:17:44,686 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:44,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:44,687 INFO L85 PathProgramCache]: Analyzing trace with hash -968066446, now seen corresponding path program 1 times [2021-11-07 01:17:44,687 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:44,687 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490381326] [2021-11-07 01:17:44,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:44,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:44,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:44,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:44,880 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:44,881 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490381326] [2021-11-07 01:17:44,881 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [490381326] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:44,881 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:44,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:17:44,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210250720] [2021-11-07 01:17:44,887 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:17:44,888 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:44,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:17:44,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:17:44,890 INFO L87 Difference]: Start difference. First operand 788 states and 979 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:45,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:45,618 INFO L93 Difference]: Finished difference Result 1366 states and 1712 transitions. [2021-11-07 01:17:45,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:45,619 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:17:45,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:45,631 INFO L225 Difference]: With dead ends: 1366 [2021-11-07 01:17:45,631 INFO L226 Difference]: Without dead ends: 966 [2021-11-07 01:17:45,633 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 [2021-11-07 01:17:45,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 966 states. [2021-11-07 01:17:45,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 966 to 872. [2021-11-07 01:17:45,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 872 states, 856 states have (on average 1.3189252336448598) internal successors, (1129), 871 states have internal predecessors, (1129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:45,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 872 states to 872 states and 1129 transitions. [2021-11-07 01:17:45,696 INFO L78 Accepts]: Start accepts. Automaton has 872 states and 1129 transitions. Word has length 72 [2021-11-07 01:17:45,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:45,697 INFO L470 AbstractCegarLoop]: Abstraction has 872 states and 1129 transitions. [2021-11-07 01:17:45,697 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:45,697 INFO L276 IsEmpty]: Start isEmpty. Operand 872 states and 1129 transitions. [2021-11-07 01:17:45,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-11-07 01:17:45,700 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:45,701 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] [2021-11-07 01:17:45,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 01:17:45,701 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:45,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:45,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1526182328, now seen corresponding path program 1 times [2021-11-07 01:17:45,702 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:45,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666745442] [2021-11-07 01:17:45,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:45,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:45,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:45,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:45,899 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:45,899 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666745442] [2021-11-07 01:17:45,899 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666745442] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:45,899 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:45,899 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:17:45,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733728753] [2021-11-07 01:17:45,900 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:17:45,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:45,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:17:45,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:17:45,904 INFO L87 Difference]: Start difference. First operand 872 states and 1129 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:46,245 INFO L93 Difference]: Finished difference Result 1042 states and 1327 transitions. [2021-11-07 01:17:46,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:46,245 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 72 [2021-11-07 01:17:46,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:46,249 INFO L225 Difference]: With dead ends: 1042 [2021-11-07 01:17:46,249 INFO L226 Difference]: Without dead ends: 618 [2021-11-07 01:17:46,250 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 [2021-11-07 01:17:46,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2021-11-07 01:17:46,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2021-11-07 01:17:46,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 602 states have (on average 1.318936877076412) internal successors, (794), 617 states have internal predecessors, (794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:46,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 794 transitions. [2021-11-07 01:17:46,281 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 794 transitions. Word has length 72 [2021-11-07 01:17:46,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:46,281 INFO L470 AbstractCegarLoop]: Abstraction has 618 states and 794 transitions. [2021-11-07 01:17:46,282 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 4 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 794 transitions. [2021-11-07 01:17:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-11-07 01:17:46,283 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:46,284 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] [2021-11-07 01:17:46,284 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 01:17:46,284 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:46,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:46,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1953545306, now seen corresponding path program 1 times [2021-11-07 01:17:46,285 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:46,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [238021527] [2021-11-07 01:17:46,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:46,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:46,419 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:46,420 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:46,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [238021527] [2021-11-07 01:17:46,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [238021527] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:46,420 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:46,420 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:17:46,421 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118755308] [2021-11-07 01:17:46,422 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:17:46,422 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:46,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:17:46,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:17:46,423 INFO L87 Difference]: Start difference. First operand 618 states and 794 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:46,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:46,695 INFO L93 Difference]: Finished difference Result 885 states and 1138 transitions. [2021-11-07 01:17:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:46,699 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 74 [2021-11-07 01:17:46,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:46,703 INFO L225 Difference]: With dead ends: 885 [2021-11-07 01:17:46,703 INFO L226 Difference]: Without dead ends: 552 [2021-11-07 01:17:46,704 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 [2021-11-07 01:17:46,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 552 states. [2021-11-07 01:17:46,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 552 to 552. [2021-11-07 01:17:46,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 552 states, 536 states have (on average 1.328358208955224) internal successors, (712), 551 states have internal predecessors, (712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:46,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 552 states to 552 states and 712 transitions. [2021-11-07 01:17:46,738 INFO L78 Accepts]: Start accepts. Automaton has 552 states and 712 transitions. Word has length 74 [2021-11-07 01:17:46,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:46,738 INFO L470 AbstractCegarLoop]: Abstraction has 552 states and 712 transitions. [2021-11-07 01:17:46,738 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 4 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:46,739 INFO L276 IsEmpty]: Start isEmpty. Operand 552 states and 712 transitions. [2021-11-07 01:17:46,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-07 01:17:46,740 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:46,741 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] [2021-11-07 01:17:46,741 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 01:17:46,741 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:46,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:46,742 INFO L85 PathProgramCache]: Analyzing trace with hash -1983390979, now seen corresponding path program 1 times [2021-11-07 01:17:46,742 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:46,742 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866426569] [2021-11-07 01:17:46,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:46,743 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:46,827 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:46,827 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:46,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866426569] [2021-11-07 01:17:46,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866426569] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:46,828 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:46,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 01:17:46,828 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801705482] [2021-11-07 01:17:46,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-07 01:17:46,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:46,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-07 01:17:46,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-07 01:17:46,832 INFO L87 Difference]: Start difference. First operand 552 states and 712 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:47,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:47,194 INFO L93 Difference]: Finished difference Result 801 states and 1029 transitions. [2021-11-07 01:17:47,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 01:17:47,195 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 76 [2021-11-07 01:17:47,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:47,200 INFO L225 Difference]: With dead ends: 801 [2021-11-07 01:17:47,200 INFO L226 Difference]: Without dead ends: 544 [2021-11-07 01:17:47,206 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 [2021-11-07 01:17:47,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-07 01:17:47,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 544. [2021-11-07 01:17:47,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3276515151515151) internal successors, (701), 543 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:47,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 701 transitions. [2021-11-07 01:17:47,249 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 701 transitions. Word has length 76 [2021-11-07 01:17:47,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:47,250 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 701 transitions. [2021-11-07 01:17:47,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 4 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:47,250 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 701 transitions. [2021-11-07 01:17:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:17:47,252 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:47,252 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] [2021-11-07 01:17:47,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-07 01:17:47,253 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:47,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:47,253 INFO L85 PathProgramCache]: Analyzing trace with hash 802660192, now seen corresponding path program 1 times [2021-11-07 01:17:47,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:47,254 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118509967] [2021-11-07 01:17:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:47,254 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:47,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:47,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:47,467 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:47,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118509967] [2021-11-07 01:17:47,468 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118509967] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:47,468 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:47,469 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-07 01:17:47,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918259309] [2021-11-07 01:17:47,470 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:17:47,470 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:47,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:17:47,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:17:47,471 INFO L87 Difference]: Start difference. First operand 544 states and 701 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 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) [2021-11-07 01:17:48,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:48,153 INFO L93 Difference]: Finished difference Result 1001 states and 1246 transitions. [2021-11-07 01:17:48,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 01:17:48,154 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 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 [2021-11-07 01:17:48,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:48,159 INFO L225 Difference]: With dead ends: 1001 [2021-11-07 01:17:48,159 INFO L226 Difference]: Without dead ends: 751 [2021-11-07 01:17:48,160 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:17:48,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 751 states. [2021-11-07 01:17:48,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 751 to 544. [2021-11-07 01:17:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3257575757575757) internal successors, (700), 543 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:48,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 700 transitions. [2021-11-07 01:17:48,208 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 700 transitions. Word has length 78 [2021-11-07 01:17:48,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:48,209 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 700 transitions. [2021-11-07 01:17:48,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 6 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) [2021-11-07 01:17:48,210 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 700 transitions. [2021-11-07 01:17:48,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:17:48,215 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:48,215 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] [2021-11-07 01:17:48,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-07 01:17:48,216 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:48,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:48,216 INFO L85 PathProgramCache]: Analyzing trace with hash 1668159008, now seen corresponding path program 1 times [2021-11-07 01:17:48,216 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:48,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1937468759] [2021-11-07 01:17:48,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:48,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:48,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:48,405 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:48,405 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1937468759] [2021-11-07 01:17:48,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1937468759] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:48,405 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:48,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:17:48,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794259529] [2021-11-07 01:17:48,406 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:48,406 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:48,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:48,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:17:48,407 INFO L87 Difference]: Start difference. First operand 544 states and 700 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2021-11-07 01:17:49,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:49,452 INFO L93 Difference]: Finished difference Result 1144 states and 1482 transitions. [2021-11-07 01:17:49,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:17:49,453 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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 [2021-11-07 01:17:49,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:49,458 INFO L225 Difference]: With dead ends: 1144 [2021-11-07 01:17:49,459 INFO L226 Difference]: Without dead ends: 1029 [2021-11-07 01:17:49,460 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:17:49,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-07 01:17:49,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 544. [2021-11-07 01:17:49,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3238636363636365) internal successors, (699), 543 states have internal predecessors, (699), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 699 transitions. [2021-11-07 01:17:49,514 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 699 transitions. Word has length 78 [2021-11-07 01:17:49,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:49,515 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 699 transitions. [2021-11-07 01:17:49,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2021-11-07 01:17:49,515 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 699 transitions. [2021-11-07 01:17:49,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-11-07 01:17:49,517 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:49,517 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] [2021-11-07 01:17:49,517 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 01:17:49,517 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:49,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:49,518 INFO L85 PathProgramCache]: Analyzing trace with hash 1675317728, now seen corresponding path program 1 times [2021-11-07 01:17:49,518 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:49,518 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [363740956] [2021-11-07 01:17:49,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:49,519 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:49,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:49,675 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:49,675 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [363740956] [2021-11-07 01:17:49,675 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [363740956] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:49,676 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:49,676 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:17:49,676 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082195091] [2021-11-07 01:17:49,676 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:49,677 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:49,677 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:49,677 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:17:49,678 INFO L87 Difference]: Start difference. First operand 544 states and 699 transitions. Second operand has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2021-11-07 01:17:50,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:50,486 INFO L93 Difference]: Finished difference Result 796 states and 1026 transitions. [2021-11-07 01:17:50,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:17:50,487 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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 [2021-11-07 01:17:50,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:50,490 INFO L225 Difference]: With dead ends: 796 [2021-11-07 01:17:50,490 INFO L226 Difference]: Without dead ends: 638 [2021-11-07 01:17:50,495 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 [2021-11-07 01:17:50,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-11-07 01:17:50,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 544. [2021-11-07 01:17:50,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.321969696969697) internal successors, (698), 543 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:50,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 698 transitions. [2021-11-07 01:17:50,544 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 698 transitions. Word has length 78 [2021-11-07 01:17:50,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:50,545 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 698 transitions. [2021-11-07 01:17:50,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.75) internal successors, (78), 7 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) [2021-11-07 01:17:50,563 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 698 transitions. [2021-11-07 01:17:50,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2021-11-07 01:17:50,565 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:50,565 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] [2021-11-07 01:17:50,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-07 01:17:50,565 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:50,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:50,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1605144151, now seen corresponding path program 1 times [2021-11-07 01:17:50,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:50,566 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23409033] [2021-11-07 01:17:50,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:50,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:50,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:50,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:50,732 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:50,732 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23409033] [2021-11-07 01:17:50,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23409033] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:50,733 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:50,733 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:17:50,733 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1484389396] [2021-11-07 01:17:50,733 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:50,736 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:50,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:50,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:17:50,737 INFO L87 Difference]: Start difference. First operand 544 states and 698 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) [2021-11-07 01:17:51,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:51,815 INFO L93 Difference]: Finished difference Result 1099 states and 1413 transitions. [2021-11-07 01:17:51,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:17:51,815 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 [2021-11-07 01:17:51,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:51,821 INFO L225 Difference]: With dead ends: 1099 [2021-11-07 01:17:51,821 INFO L226 Difference]: Without dead ends: 1003 [2021-11-07 01:17:51,822 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 [2021-11-07 01:17:51,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-07 01:17:51,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 544. [2021-11-07 01:17:51,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3200757575757576) internal successors, (697), 543 states have internal predecessors, (697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:51,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 697 transitions. [2021-11-07 01:17:51,881 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 697 transitions. Word has length 79 [2021-11-07 01:17:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:51,882 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 697 transitions. [2021-11-07 01:17:51,882 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) [2021-11-07 01:17:51,882 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 697 transitions. [2021-11-07 01:17:51,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:17:51,884 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:51,884 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] [2021-11-07 01:17:51,884 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-07 01:17:51,885 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:51,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:51,885 INFO L85 PathProgramCache]: Analyzing trace with hash 968830309, now seen corresponding path program 1 times [2021-11-07 01:17:51,885 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:51,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428483243] [2021-11-07 01:17:51,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:51,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:51,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:52,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:52,065 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:52,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428483243] [2021-11-07 01:17:52,065 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428483243] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:52,065 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:52,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:17:52,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635847159] [2021-11-07 01:17:52,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:52,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:52,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:52,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:17:52,067 INFO L87 Difference]: Start difference. First operand 544 states and 697 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:52,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:52,747 INFO L93 Difference]: Finished difference Result 868 states and 1118 transitions. [2021-11-07 01:17:52,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:17:52,748 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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 [2021-11-07 01:17:52,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:52,751 INFO L225 Difference]: With dead ends: 868 [2021-11-07 01:17:52,752 INFO L226 Difference]: Without dead ends: 638 [2021-11-07 01:17:52,752 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-11-07 01:17:52,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-11-07 01:17:52,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 544. [2021-11-07 01:17:52,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.316287878787879) internal successors, (695), 543 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:52,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 695 transitions. [2021-11-07 01:17:52,811 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 695 transitions. Word has length 80 [2021-11-07 01:17:52,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:52,811 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 695 transitions. [2021-11-07 01:17:52,811 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:52,812 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 695 transitions. [2021-11-07 01:17:52,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:17:52,813 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:52,813 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] [2021-11-07 01:17:52,814 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 01:17:52,814 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:52,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:52,814 INFO L85 PathProgramCache]: Analyzing trace with hash 1772365797, now seen corresponding path program 1 times [2021-11-07 01:17:52,815 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:52,815 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68196217] [2021-11-07 01:17:52,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:52,815 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:52,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:52,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:52,937 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:52,937 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68196217] [2021-11-07 01:17:52,937 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68196217] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:52,937 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:52,937 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:17:52,937 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050540290] [2021-11-07 01:17:52,938 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:52,938 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:52,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:52,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:17:52,939 INFO L87 Difference]: Start difference. First operand 544 states and 695 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:54,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:54,038 INFO L93 Difference]: Finished difference Result 1164 states and 1501 transitions. [2021-11-07 01:17:54,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:17:54,039 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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 [2021-11-07 01:17:54,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:54,046 INFO L225 Difference]: With dead ends: 1164 [2021-11-07 01:17:54,046 INFO L226 Difference]: Without dead ends: 1029 [2021-11-07 01:17:54,047 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=121, Invalid=299, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:17:54,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1029 states. [2021-11-07 01:17:54,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1029 to 544. [2021-11-07 01:17:54,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3125) internal successors, (693), 543 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:54,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 693 transitions. [2021-11-07 01:17:54,111 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 693 transitions. Word has length 80 [2021-11-07 01:17:54,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:54,111 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 693 transitions. [2021-11-07 01:17:54,111 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:54,112 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 693 transitions. [2021-11-07 01:17:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:17:54,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:54,113 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] [2021-11-07 01:17:54,114 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-07 01:17:54,114 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:54,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:54,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1109843867, now seen corresponding path program 1 times [2021-11-07 01:17:54,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:54,115 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970456024] [2021-11-07 01:17:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:54,115 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:54,250 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:54,251 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:54,251 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970456024] [2021-11-07 01:17:54,251 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970456024] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:54,251 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:54,251 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:17:54,252 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163273377] [2021-11-07 01:17:54,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:54,252 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:54,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:54,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:17:54,253 INFO L87 Difference]: Start difference. First operand 544 states and 693 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:55,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:55,323 INFO L93 Difference]: Finished difference Result 1110 states and 1421 transitions. [2021-11-07 01:17:55,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:17:55,324 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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 [2021-11-07 01:17:55,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:55,330 INFO L225 Difference]: With dead ends: 1110 [2021-11-07 01:17:55,330 INFO L226 Difference]: Without dead ends: 1003 [2021-11-07 01:17:55,331 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 [2021-11-07 01:17:55,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-07 01:17:55,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 544. [2021-11-07 01:17:55,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.308712121212121) internal successors, (691), 543 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:55,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 691 transitions. [2021-11-07 01:17:55,395 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 691 transitions. Word has length 80 [2021-11-07 01:17:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:55,396 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 691 transitions. [2021-11-07 01:17:55,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:55,396 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 691 transitions. [2021-11-07 01:17:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:17:55,398 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:55,398 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] [2021-11-07 01:17:55,398 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-07 01:17:55,398 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:55,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:55,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1167764005, now seen corresponding path program 1 times [2021-11-07 01:17:55,399 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:55,399 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311068156] [2021-11-07 01:17:55,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:55,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:55,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:55,547 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:55,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:55,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311068156] [2021-11-07 01:17:55,548 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311068156] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:55,548 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:55,548 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:17:55,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1961678149] [2021-11-07 01:17:55,549 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:17:55,549 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:55,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:17:55,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:17:55,550 INFO L87 Difference]: Start difference. First operand 544 states and 691 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:56,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:56,533 INFO L93 Difference]: Finished difference Result 1103 states and 1410 transitions. [2021-11-07 01:17:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:17:56,533 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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 [2021-11-07 01:17:56,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:56,542 INFO L225 Difference]: With dead ends: 1103 [2021-11-07 01:17:56,543 INFO L226 Difference]: Without dead ends: 1003 [2021-11-07 01:17:56,543 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 [2021-11-07 01:17:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-07 01:17:56,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 544. [2021-11-07 01:17:56,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 544 states, 528 states have (on average 1.3068181818181819) internal successors, (690), 543 states have internal predecessors, (690), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:56,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 690 transitions. [2021-11-07 01:17:56,614 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 690 transitions. Word has length 80 [2021-11-07 01:17:56,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:56,614 INFO L470 AbstractCegarLoop]: Abstraction has 544 states and 690 transitions. [2021-11-07 01:17:56,614 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:17:56,615 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 690 transitions. [2021-11-07 01:17:56,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:17:56,616 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:56,617 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] [2021-11-07 01:17:56,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-07 01:17:56,617 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:56,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:56,618 INFO L85 PathProgramCache]: Analyzing trace with hash 845800069, now seen corresponding path program 1 times [2021-11-07 01:17:56,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:56,618 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704900949] [2021-11-07 01:17:56,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:56,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:56,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:56,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704900949] [2021-11-07 01:17:56,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704900949] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:56,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:56,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:17:56,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750649682] [2021-11-07 01:17:56,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:17:56,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:56,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:17:56,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:17:56,850 INFO L87 Difference]: Start difference. First operand 544 states and 690 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 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) [2021-11-07 01:17:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:17:58,961 INFO L93 Difference]: Finished difference Result 1619 states and 2090 transitions. [2021-11-07 01:17:58,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:17:58,962 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 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 [2021-11-07 01:17:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:17:58,970 INFO L225 Difference]: With dead ends: 1619 [2021-11-07 01:17:58,971 INFO L226 Difference]: Without dead ends: 1495 [2021-11-07 01:17:58,973 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:17:58,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1495 states. [2021-11-07 01:17:59,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1495 to 549. [2021-11-07 01:17:59,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 533 states have (on average 1.3039399624765478) internal successors, (695), 548 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:17:59,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 695 transitions. [2021-11-07 01:17:59,064 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 695 transitions. Word has length 80 [2021-11-07 01:17:59,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:17:59,064 INFO L470 AbstractCegarLoop]: Abstraction has 549 states and 695 transitions. [2021-11-07 01:17:59,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 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) [2021-11-07 01:17:59,065 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 695 transitions. [2021-11-07 01:17:59,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:17:59,067 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:17:59,067 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, 1, 1] [2021-11-07 01:17:59,068 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-07 01:17:59,068 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:17:59,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:17:59,068 INFO L85 PathProgramCache]: Analyzing trace with hash 319051941, now seen corresponding path program 1 times [2021-11-07 01:17:59,069 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:17:59,069 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [502267391] [2021-11-07 01:17:59,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:17:59,069 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:17:59,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:17:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:17:59,282 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:17:59,282 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [502267391] [2021-11-07 01:17:59,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [502267391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:17:59,283 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:17:59,283 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:17:59,283 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999111169] [2021-11-07 01:17:59,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:17:59,284 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:17:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:17:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:17:59,285 INFO L87 Difference]: Start difference. First operand 549 states and 695 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 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) [2021-11-07 01:18:01,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:01,297 INFO L93 Difference]: Finished difference Result 1611 states and 2079 transitions. [2021-11-07 01:18:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:01,298 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 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 [2021-11-07 01:18:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:01,304 INFO L225 Difference]: With dead ends: 1611 [2021-11-07 01:18:01,304 INFO L226 Difference]: Without dead ends: 1511 [2021-11-07 01:18:01,305 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:01,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1511 states. [2021-11-07 01:18:01,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1511 to 554. [2021-11-07 01:18:01,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 554 states, 538 states have (on average 1.3011152416356877) internal successors, (700), 553 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:01,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 554 states to 554 states and 700 transitions. [2021-11-07 01:18:01,407 INFO L78 Accepts]: Start accepts. Automaton has 554 states and 700 transitions. Word has length 80 [2021-11-07 01:18:01,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:01,407 INFO L470 AbstractCegarLoop]: Abstraction has 554 states and 700 transitions. [2021-11-07 01:18:01,408 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 10 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) [2021-11-07 01:18:01,408 INFO L276 IsEmpty]: Start isEmpty. Operand 554 states and 700 transitions. [2021-11-07 01:18:01,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2021-11-07 01:18:01,410 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:01,410 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] [2021-11-07 01:18:01,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-07 01:18:01,412 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:01,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:01,412 INFO L85 PathProgramCache]: Analyzing trace with hash 436282523, now seen corresponding path program 1 times [2021-11-07 01:18:01,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:01,413 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [344660911] [2021-11-07 01:18:01,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:01,413 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:01,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:01,530 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:01,530 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [344660911] [2021-11-07 01:18:01,532 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [344660911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:01,532 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:01,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:01,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773842521] [2021-11-07 01:18:01,533 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:01,533 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:01,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:01,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:01,534 INFO L87 Difference]: Start difference. First operand 554 states and 700 transitions. Second operand has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:18:02,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:02,559 INFO L93 Difference]: Finished difference Result 1075 states and 1360 transitions. [2021-11-07 01:18:02,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:02,559 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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 [2021-11-07 01:18:02,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:02,563 INFO L225 Difference]: With dead ends: 1075 [2021-11-07 01:18:02,564 INFO L226 Difference]: Without dead ends: 988 [2021-11-07 01:18:02,564 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 [2021-11-07 01:18:02,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-07 01:18:02,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 553. [2021-11-07 01:18:02,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 537 states have (on average 1.2998137802607077) internal successors, (698), 552 states have internal predecessors, (698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:02,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 698 transitions. [2021-11-07 01:18:02,667 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 698 transitions. Word has length 80 [2021-11-07 01:18:02,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:02,667 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 698 transitions. [2021-11-07 01:18:02,668 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.0) internal successors, (80), 7 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) [2021-11-07 01:18:02,668 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 698 transitions. [2021-11-07 01:18:02,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:18:02,669 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:02,670 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] [2021-11-07 01:18:02,670 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-07 01:18:02,670 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:02,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:02,672 INFO L85 PathProgramCache]: Analyzing trace with hash 1402771346, now seen corresponding path program 1 times [2021-11-07 01:18:02,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:02,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851839533] [2021-11-07 01:18:02,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:02,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:02,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:02,803 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851839533] [2021-11-07 01:18:02,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851839533] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:02,803 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:02,803 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:02,803 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574846391] [2021-11-07 01:18:02,804 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:02,804 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:02,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:02,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:02,805 INFO L87 Difference]: Start difference. First operand 553 states and 698 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:03,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:03,963 INFO L93 Difference]: Finished difference Result 1080 states and 1364 transitions. [2021-11-07 01:18:03,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:03,963 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-07 01:18:03,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:03,967 INFO L225 Difference]: With dead ends: 1080 [2021-11-07 01:18:03,967 INFO L226 Difference]: Without dead ends: 988 [2021-11-07 01:18:03,968 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 [2021-11-07 01:18:03,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-07 01:18:04,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 553. [2021-11-07 01:18:04,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 537 states have (on average 1.2960893854748603) internal successors, (696), 552 states have internal predecessors, (696), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:04,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 696 transitions. [2021-11-07 01:18:04,081 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 696 transitions. Word has length 81 [2021-11-07 01:18:04,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:04,081 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 696 transitions. [2021-11-07 01:18:04,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:04,082 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 696 transitions. [2021-11-07 01:18:04,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:18:04,083 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:04,084 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] [2021-11-07 01:18:04,084 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-07 01:18:04,084 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:04,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:04,085 INFO L85 PathProgramCache]: Analyzing trace with hash -737160558, now seen corresponding path program 1 times [2021-11-07 01:18:04,085 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:04,085 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406065512] [2021-11-07 01:18:04,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:04,085 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:04,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:04,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:04,232 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:04,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406065512] [2021-11-07 01:18:04,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406065512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:04,233 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:04,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:04,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1960404272] [2021-11-07 01:18:04,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:04,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:04,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:04,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:04,236 INFO L87 Difference]: Start difference. First operand 553 states and 696 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:05,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:05,213 INFO L93 Difference]: Finished difference Result 1077 states and 1359 transitions. [2021-11-07 01:18:05,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:05,214 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-07 01:18:05,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:05,217 INFO L225 Difference]: With dead ends: 1077 [2021-11-07 01:18:05,217 INFO L226 Difference]: Without dead ends: 988 [2021-11-07 01:18:05,218 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 [2021-11-07 01:18:05,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-07 01:18:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 553. [2021-11-07 01:18:05,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 537 states have (on average 1.2942271880819367) internal successors, (695), 552 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:05,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 695 transitions. [2021-11-07 01:18:05,298 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 695 transitions. Word has length 81 [2021-11-07 01:18:05,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:05,299 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 695 transitions. [2021-11-07 01:18:05,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:05,299 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 695 transitions. [2021-11-07 01:18:05,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:18:05,301 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:05,301 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] [2021-11-07 01:18:05,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-07 01:18:05,301 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:05,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:05,302 INFO L85 PathProgramCache]: Analyzing trace with hash -1997711831, now seen corresponding path program 1 times [2021-11-07 01:18:05,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:05,302 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098663010] [2021-11-07 01:18:05,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:05,303 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:05,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:05,412 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:05,412 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098663010] [2021-11-07 01:18:05,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098663010] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:05,412 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:05,413 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:05,413 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [546865735] [2021-11-07 01:18:05,413 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:05,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:05,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:05,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:05,414 INFO L87 Difference]: Start difference. First operand 553 states and 695 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:06,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:06,415 INFO L93 Difference]: Finished difference Result 1157 states and 1478 transitions. [2021-11-07 01:18:06,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:18:06,415 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-07 01:18:06,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:06,421 INFO L225 Difference]: With dead ends: 1157 [2021-11-07 01:18:06,421 INFO L226 Difference]: Without dead ends: 1033 [2021-11-07 01:18:06,422 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:18:06,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1033 states. [2021-11-07 01:18:06,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1033 to 548. [2021-11-07 01:18:06,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 1.2951127819548873) internal successors, (689), 547 states have internal predecessors, (689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:06,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 689 transitions. [2021-11-07 01:18:06,496 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 689 transitions. Word has length 81 [2021-11-07 01:18:06,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:06,496 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 689 transitions. [2021-11-07 01:18:06,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:06,496 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 689 transitions. [2021-11-07 01:18:06,498 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:18:06,498 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:06,498 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] [2021-11-07 01:18:06,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-07 01:18:06,499 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:06,499 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:06,499 INFO L85 PathProgramCache]: Analyzing trace with hash 1762485042, now seen corresponding path program 1 times [2021-11-07 01:18:06,499 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:06,500 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1535741809] [2021-11-07 01:18:06,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:06,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:06,621 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:06,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1535741809] [2021-11-07 01:18:06,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1535741809] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:06,622 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:06,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:06,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362046068] [2021-11-07 01:18:06,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:06,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:06,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:06,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:06,624 INFO L87 Difference]: Start difference. First operand 548 states and 689 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:07,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:07,623 INFO L93 Difference]: Finished difference Result 1072 states and 1352 transitions. [2021-11-07 01:18:07,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:07,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-07 01:18:07,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:07,627 INFO L225 Difference]: With dead ends: 1072 [2021-11-07 01:18:07,627 INFO L226 Difference]: Without dead ends: 983 [2021-11-07 01:18:07,627 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 [2021-11-07 01:18:07,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 983 states. [2021-11-07 01:18:07,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 983 to 548. [2021-11-07 01:18:07,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 1.2932330827067668) internal successors, (688), 547 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:07,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 688 transitions. [2021-11-07 01:18:07,726 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 688 transitions. Word has length 81 [2021-11-07 01:18:07,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:07,726 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 688 transitions. [2021-11-07 01:18:07,726 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:07,726 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 688 transitions. [2021-11-07 01:18:07,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:18:07,728 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:07,728 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] [2021-11-07 01:18:07,728 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-07 01:18:07,728 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:07,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:07,729 INFO L85 PathProgramCache]: Analyzing trace with hash -818292174, now seen corresponding path program 1 times [2021-11-07 01:18:07,729 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:07,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1187522038] [2021-11-07 01:18:07,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:07,730 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:07,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:07,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:07,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:07,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1187522038] [2021-11-07 01:18:07,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1187522038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:07,922 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:07,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:18:07,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312004919] [2021-11-07 01:18:07,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:18:07,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:07,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:18:07,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:07,924 INFO L87 Difference]: Start difference. First operand 548 states and 688 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 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) [2021-11-07 01:18:09,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:09,753 INFO L93 Difference]: Finished difference Result 1516 states and 1940 transitions. [2021-11-07 01:18:09,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:09,753 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 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 [2021-11-07 01:18:09,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:09,760 INFO L225 Difference]: With dead ends: 1516 [2021-11-07 01:18:09,760 INFO L226 Difference]: Without dead ends: 1427 [2021-11-07 01:18:09,761 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:09,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1427 states. [2021-11-07 01:18:09,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1427 to 553. [2021-11-07 01:18:09,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 537 states have (on average 1.2905027932960893) internal successors, (693), 552 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:09,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 693 transitions. [2021-11-07 01:18:09,860 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 693 transitions. Word has length 81 [2021-11-07 01:18:09,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:09,860 INFO L470 AbstractCegarLoop]: Abstraction has 553 states and 693 transitions. [2021-11-07 01:18:09,860 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 10 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) [2021-11-07 01:18:09,860 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 693 transitions. [2021-11-07 01:18:09,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-07 01:18:09,862 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:09,862 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] [2021-11-07 01:18:09,862 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-07 01:18:09,862 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:09,863 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:09,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1352872111, now seen corresponding path program 1 times [2021-11-07 01:18:09,863 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:09,863 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18152358] [2021-11-07 01:18:09,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:09,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:09,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:09,962 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:09,963 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:09,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18152358] [2021-11-07 01:18:09,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18152358] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:09,963 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:09,963 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:09,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706074815] [2021-11-07 01:18:09,964 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:09,964 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:09,964 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:09,965 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:09,965 INFO L87 Difference]: Start difference. First operand 553 states and 693 transitions. Second operand has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:10,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:10,904 INFO L93 Difference]: Finished difference Result 1107 states and 1404 transitions. [2021-11-07 01:18:10,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:18:10,904 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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 [2021-11-07 01:18:10,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:10,908 INFO L225 Difference]: With dead ends: 1107 [2021-11-07 01:18:10,908 INFO L226 Difference]: Without dead ends: 1007 [2021-11-07 01:18:10,909 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:18:10,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2021-11-07 01:18:11,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 548. [2021-11-07 01:18:11,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 1.2913533834586466) internal successors, (687), 547 states have internal predecessors, (687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:11,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 687 transitions. [2021-11-07 01:18:11,005 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 687 transitions. Word has length 81 [2021-11-07 01:18:11,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:11,005 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 687 transitions. [2021-11-07 01:18:11,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.125) internal successors, (81), 7 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) [2021-11-07 01:18:11,005 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 687 transitions. [2021-11-07 01:18:11,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:11,008 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:11,008 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] [2021-11-07 01:18:11,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-07 01:18:11,009 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:11,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:11,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1416899414, now seen corresponding path program 1 times [2021-11-07 01:18:11,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:11,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737412866] [2021-11-07 01:18:11,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:11,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:11,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:11,139 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:11,139 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737412866] [2021-11-07 01:18:11,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737412866] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:11,140 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:11,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:11,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225682425] [2021-11-07 01:18:11,140 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:11,140 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:11,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:11,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:11,141 INFO L87 Difference]: Start difference. First operand 548 states and 687 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) [2021-11-07 01:18:12,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:12,137 INFO L93 Difference]: Finished difference Result 984 states and 1232 transitions. [2021-11-07 01:18:12,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:12,137 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 [2021-11-07 01:18:12,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:12,141 INFO L225 Difference]: With dead ends: 984 [2021-11-07 01:18:12,141 INFO L226 Difference]: Without dead ends: 978 [2021-11-07 01:18:12,142 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 [2021-11-07 01:18:12,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2021-11-07 01:18:12,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 548. [2021-11-07 01:18:12,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 548 states, 532 states have (on average 1.287593984962406) internal successors, (685), 547 states have internal predecessors, (685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:12,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 548 states to 548 states and 685 transitions. [2021-11-07 01:18:12,247 INFO L78 Accepts]: Start accepts. Automaton has 548 states and 685 transitions. Word has length 82 [2021-11-07 01:18:12,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:12,248 INFO L470 AbstractCegarLoop]: Abstraction has 548 states and 685 transitions. [2021-11-07 01:18:12,248 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) [2021-11-07 01:18:12,248 INFO L276 IsEmpty]: Start isEmpty. Operand 548 states and 685 transitions. [2021-11-07 01:18:12,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:12,250 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:12,250 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] [2021-11-07 01:18:12,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-07 01:18:12,251 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:12,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:12,251 INFO L85 PathProgramCache]: Analyzing trace with hash 110550506, now seen corresponding path program 1 times [2021-11-07 01:18:12,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:12,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019294716] [2021-11-07 01:18:12,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:12,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:12,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:12,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:12,444 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:12,444 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019294716] [2021-11-07 01:18:12,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019294716] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:12,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:12,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:18:12,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217111181] [2021-11-07 01:18:12,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:18:12,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:12,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:18:12,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:12,447 INFO L87 Difference]: Start difference. First operand 548 states and 685 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:14,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:14,415 INFO L93 Difference]: Finished difference Result 1538 states and 1964 transitions. [2021-11-07 01:18:14,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:14,415 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:18:14,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:14,420 INFO L225 Difference]: With dead ends: 1538 [2021-11-07 01:18:14,421 INFO L226 Difference]: Without dead ends: 1519 [2021-11-07 01:18:14,421 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:14,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1519 states. [2021-11-07 01:18:14,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1519 to 558. [2021-11-07 01:18:14,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 542 states have (on average 1.2822878228782288) internal successors, (695), 557 states have internal predecessors, (695), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:14,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 695 transitions. [2021-11-07 01:18:14,527 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 695 transitions. Word has length 82 [2021-11-07 01:18:14,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:14,527 INFO L470 AbstractCegarLoop]: Abstraction has 558 states and 695 transitions. [2021-11-07 01:18:14,528 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:14,528 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 695 transitions. [2021-11-07 01:18:14,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:14,529 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:14,529 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] [2021-11-07 01:18:14,529 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-07 01:18:14,530 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:14,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:14,530 INFO L85 PathProgramCache]: Analyzing trace with hash -534325398, now seen corresponding path program 1 times [2021-11-07 01:18:14,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:14,530 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583803077] [2021-11-07 01:18:14,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:14,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:14,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:14,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:14,708 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:14,708 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583803077] [2021-11-07 01:18:14,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583803077] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:14,709 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:14,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:18:14,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005244005] [2021-11-07 01:18:14,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:18:14,709 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:14,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:18:14,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:14,710 INFO L87 Difference]: Start difference. First operand 558 states and 695 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:16,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:16,694 INFO L93 Difference]: Finished difference Result 1445 states and 1836 transitions. [2021-11-07 01:18:16,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:16,694 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:18:16,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:16,699 INFO L225 Difference]: With dead ends: 1445 [2021-11-07 01:18:16,699 INFO L226 Difference]: Without dead ends: 1439 [2021-11-07 01:18:16,700 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:16,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1439 states. [2021-11-07 01:18:16,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1439 to 568. [2021-11-07 01:18:16,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 552 states have (on average 1.2771739130434783) internal successors, (705), 567 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:16,817 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 705 transitions. [2021-11-07 01:18:16,818 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 705 transitions. Word has length 82 [2021-11-07 01:18:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:16,818 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 705 transitions. [2021-11-07 01:18:16,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:16,819 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 705 transitions. [2021-11-07 01:18:16,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:16,820 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:16,820 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] [2021-11-07 01:18:16,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-07 01:18:16,821 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:16,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:16,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1378881558, now seen corresponding path program 1 times [2021-11-07 01:18:16,821 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:16,821 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1488507496] [2021-11-07 01:18:16,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:16,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:16,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:16,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:16,931 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:16,931 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1488507496] [2021-11-07 01:18:16,931 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1488507496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:16,931 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:16,931 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:16,931 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065515072] [2021-11-07 01:18:16,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:16,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:16,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:16,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:16,934 INFO L87 Difference]: Start difference. First operand 568 states and 705 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) [2021-11-07 01:18:17,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:17,906 INFO L93 Difference]: Finished difference Result 1084 states and 1358 transitions. [2021-11-07 01:18:17,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:17,907 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 [2021-11-07 01:18:17,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:17,910 INFO L225 Difference]: With dead ends: 1084 [2021-11-07 01:18:17,910 INFO L226 Difference]: Without dead ends: 988 [2021-11-07 01:18:17,911 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 [2021-11-07 01:18:17,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2021-11-07 01:18:18,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 568. [2021-11-07 01:18:18,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 552 states have (on average 1.2735507246376812) internal successors, (703), 567 states have internal predecessors, (703), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:18,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 703 transitions. [2021-11-07 01:18:18,008 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 703 transitions. Word has length 82 [2021-11-07 01:18:18,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:18,008 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 703 transitions. [2021-11-07 01:18:18,009 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) [2021-11-07 01:18:18,009 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 703 transitions. [2021-11-07 01:18:18,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:18,010 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:18,010 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] [2021-11-07 01:18:18,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-07 01:18:18,011 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:18,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:18,011 INFO L85 PathProgramCache]: Analyzing trace with hash 148568362, now seen corresponding path program 1 times [2021-11-07 01:18:18,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:18,012 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012881089] [2021-11-07 01:18:18,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:18,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:18,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:18,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:18,126 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:18,126 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012881089] [2021-11-07 01:18:18,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012881089] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:18,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:18,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:18,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887610022] [2021-11-07 01:18:18,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:18,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:18,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:18,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:18,129 INFO L87 Difference]: Start difference. First operand 568 states and 703 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) [2021-11-07 01:18:19,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:19,159 INFO L93 Difference]: Finished difference Result 1130 states and 1422 transitions. [2021-11-07 01:18:19,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:19,159 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 [2021-11-07 01:18:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:19,174 INFO L225 Difference]: With dead ends: 1130 [2021-11-07 01:18:19,175 INFO L226 Difference]: Without dead ends: 1017 [2021-11-07 01:18:19,175 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 [2021-11-07 01:18:19,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1017 states. [2021-11-07 01:18:19,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1017 to 568. [2021-11-07 01:18:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 568 states, 552 states have (on average 1.269927536231884) internal successors, (701), 567 states have internal predecessors, (701), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:19,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 701 transitions. [2021-11-07 01:18:19,292 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 701 transitions. Word has length 82 [2021-11-07 01:18:19,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:19,292 INFO L470 AbstractCegarLoop]: Abstraction has 568 states and 701 transitions. [2021-11-07 01:18:19,293 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) [2021-11-07 01:18:19,293 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 701 transitions. [2021-11-07 01:18:19,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:19,294 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:19,294 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] [2021-11-07 01:18:19,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-07 01:18:19,294 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:19,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:19,295 INFO L85 PathProgramCache]: Analyzing trace with hash -1321164118, now seen corresponding path program 1 times [2021-11-07 01:18:19,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:19,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689093233] [2021-11-07 01:18:19,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:19,296 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:19,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:19,484 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:19,484 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:19,484 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689093233] [2021-11-07 01:18:19,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689093233] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:19,484 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:19,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:18:19,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781421458] [2021-11-07 01:18:19,485 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:18:19,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:19,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:18:19,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:19,486 INFO L87 Difference]: Start difference. First operand 568 states and 701 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:21,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:21,665 INFO L93 Difference]: Finished difference Result 1717 states and 2190 transitions. [2021-11-07 01:18:21,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:21,666 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:18:21,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:21,670 INFO L225 Difference]: With dead ends: 1717 [2021-11-07 01:18:21,671 INFO L226 Difference]: Without dead ends: 1560 [2021-11-07 01:18:21,672 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:21,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1560 states. [2021-11-07 01:18:21,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1560 to 578. [2021-11-07 01:18:21,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 562 states have (on average 1.2651245551601424) internal successors, (711), 577 states have internal predecessors, (711), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:21,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 711 transitions. [2021-11-07 01:18:21,814 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 711 transitions. Word has length 82 [2021-11-07 01:18:21,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:21,814 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 711 transitions. [2021-11-07 01:18:21,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:21,814 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 711 transitions. [2021-11-07 01:18:21,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:21,815 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:21,815 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] [2021-11-07 01:18:21,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-07 01:18:21,816 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:21,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:21,816 INFO L85 PathProgramCache]: Analyzing trace with hash -378154710, now seen corresponding path program 1 times [2021-11-07 01:18:21,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:21,817 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549145294] [2021-11-07 01:18:21,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:21,817 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:21,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:21,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:21,924 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:21,924 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549145294] [2021-11-07 01:18:21,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549145294] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:21,925 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:21,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:21,925 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [778764961] [2021-11-07 01:18:21,925 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:21,926 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:21,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:21,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:21,927 INFO L87 Difference]: Start difference. First operand 578 states and 711 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) [2021-11-07 01:18:23,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:23,034 INFO L93 Difference]: Finished difference Result 1090 states and 1359 transitions. [2021-11-07 01:18:23,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:23,035 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 [2021-11-07 01:18:23,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:23,037 INFO L225 Difference]: With dead ends: 1090 [2021-11-07 01:18:23,037 INFO L226 Difference]: Without dead ends: 998 [2021-11-07 01:18:23,038 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 [2021-11-07 01:18:23,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 998 states. [2021-11-07 01:18:23,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 998 to 578. [2021-11-07 01:18:23,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 562 states have (on average 1.2633451957295374) internal successors, (710), 577 states have internal predecessors, (710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:23,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 710 transitions. [2021-11-07 01:18:23,191 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 710 transitions. Word has length 82 [2021-11-07 01:18:23,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:23,191 INFO L470 AbstractCegarLoop]: Abstraction has 578 states and 710 transitions. [2021-11-07 01:18:23,192 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) [2021-11-07 01:18:23,192 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 710 transitions. [2021-11-07 01:18:23,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:23,193 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:23,193 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] [2021-11-07 01:18:23,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-07 01:18:23,194 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:23,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:23,194 INFO L85 PathProgramCache]: Analyzing trace with hash 637597674, now seen corresponding path program 1 times [2021-11-07 01:18:23,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:23,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76626391] [2021-11-07 01:18:23,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:23,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:23,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:23,373 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:23,374 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76626391] [2021-11-07 01:18:23,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76626391] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:23,374 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:23,374 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:18:23,374 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839921567] [2021-11-07 01:18:23,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:18:23,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:23,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:18:23,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:23,376 INFO L87 Difference]: Start difference. First operand 578 states and 710 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:25,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:25,447 INFO L93 Difference]: Finished difference Result 1634 states and 2078 transitions. [2021-11-07 01:18:25,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:25,447 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:18:25,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:25,449 INFO L225 Difference]: With dead ends: 1634 [2021-11-07 01:18:25,449 INFO L226 Difference]: Without dead ends: 1529 [2021-11-07 01:18:25,450 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:25,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1529 states. [2021-11-07 01:18:25,576 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1529 to 583. [2021-11-07 01:18:25,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 583 states, 567 states have (on average 1.2610229276895943) internal successors, (715), 582 states have internal predecessors, (715), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:25,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 583 states to 583 states and 715 transitions. [2021-11-07 01:18:25,577 INFO L78 Accepts]: Start accepts. Automaton has 583 states and 715 transitions. Word has length 82 [2021-11-07 01:18:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:25,578 INFO L470 AbstractCegarLoop]: Abstraction has 583 states and 715 transitions. [2021-11-07 01:18:25,578 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:25,578 INFO L276 IsEmpty]: Start isEmpty. Operand 583 states and 715 transitions. [2021-11-07 01:18:25,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:25,579 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:25,579 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] [2021-11-07 01:18:25,579 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-07 01:18:25,579 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr7ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:25,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:25,580 INFO L85 PathProgramCache]: Analyzing trace with hash -586374390, now seen corresponding path program 1 times [2021-11-07 01:18:25,580 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:25,580 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142842757] [2021-11-07 01:18:25,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:25,580 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:25,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:25,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:25,759 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:25,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142842757] [2021-11-07 01:18:25,760 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1142842757] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:25,760 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:25,760 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:18:25,760 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545317992] [2021-11-07 01:18:25,761 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:18:25,761 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:25,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:18:25,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:25,762 INFO L87 Difference]: Start difference. First operand 583 states and 715 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:27,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:27,857 INFO L93 Difference]: Finished difference Result 1536 states and 1946 transitions. [2021-11-07 01:18:27,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:27,859 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:18:27,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:27,861 INFO L225 Difference]: With dead ends: 1536 [2021-11-07 01:18:27,861 INFO L226 Difference]: Without dead ends: 1444 [2021-11-07 01:18:27,862 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:27,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-11-07 01:18:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 588. [2021-11-07 01:18:27,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 572 states have (on average 1.2587412587412588) internal successors, (720), 587 states have internal predecessors, (720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:27,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 720 transitions. [2021-11-07 01:18:27,980 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 720 transitions. Word has length 82 [2021-11-07 01:18:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:27,980 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 720 transitions. [2021-11-07 01:18:27,980 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 720 transitions. [2021-11-07 01:18:27,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:27,981 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:27,982 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] [2021-11-07 01:18:27,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-07 01:18:27,982 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:27,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:27,983 INFO L85 PathProgramCache]: Analyzing trace with hash -1027878550, now seen corresponding path program 1 times [2021-11-07 01:18:27,983 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:27,983 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716147896] [2021-11-07 01:18:27,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:27,983 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:28,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:28,177 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:28,177 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:28,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716147896] [2021-11-07 01:18:28,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716147896] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:28,178 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:28,178 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:18:28,178 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113637039] [2021-11-07 01:18:28,178 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:18:28,178 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:28,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:18:28,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:18:28,179 INFO L87 Difference]: Start difference. First operand 588 states and 720 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:30,337 INFO L93 Difference]: Finished difference Result 1450 states and 1829 transitions. [2021-11-07 01:18:30,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-07 01:18:30,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 82 [2021-11-07 01:18:30,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:30,341 INFO L225 Difference]: With dead ends: 1450 [2021-11-07 01:18:30,341 INFO L226 Difference]: Without dead ends: 1444 [2021-11-07 01:18:30,342 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=264, Invalid=728, Unknown=0, NotChecked=0, Total=992 [2021-11-07 01:18:30,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1444 states. [2021-11-07 01:18:30,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1444 to 593. [2021-11-07 01:18:30,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 577 states have (on average 1.2564991334488735) internal successors, (725), 592 states have internal predecessors, (725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 725 transitions. [2021-11-07 01:18:30,461 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 725 transitions. Word has length 82 [2021-11-07 01:18:30,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:30,462 INFO L470 AbstractCegarLoop]: Abstraction has 593 states and 725 transitions. [2021-11-07 01:18:30,462 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 10 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:30,462 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 725 transitions. [2021-11-07 01:18:30,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-11-07 01:18:30,463 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:30,463 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] [2021-11-07 01:18:30,463 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-07 01:18:30,463 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:30,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:30,463 INFO L85 PathProgramCache]: Analyzing trace with hash -1106070334, now seen corresponding path program 1 times [2021-11-07 01:18:30,464 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:30,464 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [963377116] [2021-11-07 01:18:30,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:30,464 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:30,572 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:30,572 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:30,572 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [963377116] [2021-11-07 01:18:30,573 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [963377116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:30,573 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:30,573 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:30,573 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831975172] [2021-11-07 01:18:30,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:30,574 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:30,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:30,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:30,574 INFO L87 Difference]: Start difference. First operand 593 states and 725 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) [2021-11-07 01:18:31,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:31,594 INFO L93 Difference]: Finished difference Result 1092 states and 1358 transitions. [2021-11-07 01:18:31,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:18:31,595 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 [2021-11-07 01:18:31,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:31,596 INFO L225 Difference]: With dead ends: 1092 [2021-11-07 01:18:31,596 INFO L226 Difference]: Without dead ends: 1003 [2021-11-07 01:18:31,597 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:18:31,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1003 states. [2021-11-07 01:18:31,733 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1003 to 588. [2021-11-07 01:18:31,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 588 states, 572 states have (on average 1.256993006993007) internal successors, (719), 587 states have internal predecessors, (719), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:31,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 588 states to 588 states and 719 transitions. [2021-11-07 01:18:31,734 INFO L78 Accepts]: Start accepts. Automaton has 588 states and 719 transitions. Word has length 82 [2021-11-07 01:18:31,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:31,735 INFO L470 AbstractCegarLoop]: Abstraction has 588 states and 719 transitions. [2021-11-07 01:18:31,735 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) [2021-11-07 01:18:31,735 INFO L276 IsEmpty]: Start isEmpty. Operand 588 states and 719 transitions. [2021-11-07 01:18:31,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:31,736 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:31,736 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] [2021-11-07 01:18:31,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-07 01:18:31,737 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:31,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:31,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1377145907, now seen corresponding path program 1 times [2021-11-07 01:18:31,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:31,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312567524] [2021-11-07 01:18:31,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:31,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:31,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:32,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:32,053 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:32,053 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312567524] [2021-11-07 01:18:32,053 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312567524] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:32,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:32,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 01:18:32,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139708329] [2021-11-07 01:18:32,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:18:32,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:32,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:18:32,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:18:32,055 INFO L87 Difference]: Start difference. First operand 588 states and 719 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) [2021-11-07 01:18:32,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:32,892 INFO L93 Difference]: Finished difference Result 984 states and 1234 transitions. [2021-11-07 01:18:32,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:18:32,892 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 [2021-11-07 01:18:32,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:32,894 INFO L225 Difference]: With dead ends: 984 [2021-11-07 01:18:32,894 INFO L226 Difference]: Without dead ends: 772 [2021-11-07 01:18:32,895 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=321, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:18:32,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 772 states. [2021-11-07 01:18:33,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 772 to 462. [2021-11-07 01:18:33,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 462 states, 450 states have (on average 1.2533333333333334) internal successors, (564), 461 states have internal predecessors, (564), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:33,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 462 states to 462 states and 564 transitions. [2021-11-07 01:18:33,054 INFO L78 Accepts]: Start accepts. Automaton has 462 states and 564 transitions. Word has length 83 [2021-11-07 01:18:33,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:33,054 INFO L470 AbstractCegarLoop]: Abstraction has 462 states and 564 transitions. [2021-11-07 01:18:33,054 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) [2021-11-07 01:18:33,055 INFO L276 IsEmpty]: Start isEmpty. Operand 462 states and 564 transitions. [2021-11-07 01:18:33,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:33,055 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:33,055 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] [2021-11-07 01:18:33,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-07 01:18:33,056 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:33,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:33,056 INFO L85 PathProgramCache]: Analyzing trace with hash -1042213600, now seen corresponding path program 1 times [2021-11-07 01:18:33,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:33,056 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059724719] [2021-11-07 01:18:33,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:33,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:33,152 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:33,153 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:33,153 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059724719] [2021-11-07 01:18:33,153 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059724719] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:33,153 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:33,153 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:33,154 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1950722015] [2021-11-07 01:18:33,154 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:33,155 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:33,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:33,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:33,155 INFO L87 Difference]: Start difference. First operand 462 states and 564 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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) [2021-11-07 01:18:34,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:34,133 INFO L93 Difference]: Finished difference Result 1104 states and 1387 transitions. [2021-11-07 01:18:34,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:18:34,133 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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 [2021-11-07 01:18:34,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:34,134 INFO L225 Difference]: With dead ends: 1104 [2021-11-07 01:18:34,134 INFO L226 Difference]: Without dead ends: 947 [2021-11-07 01:18:34,135 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:18:34,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 947 states. [2021-11-07 01:18:34,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 947 to 452. [2021-11-07 01:18:34,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 440 states have (on average 1.2545454545454546) internal successors, (552), 451 states have internal predecessors, (552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:34,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 552 transitions. [2021-11-07 01:18:34,246 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 552 transitions. Word has length 83 [2021-11-07 01:18:34,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:34,247 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 552 transitions. [2021-11-07 01:18:34,247 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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) [2021-11-07 01:18:34,247 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 552 transitions. [2021-11-07 01:18:34,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:34,248 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:34,248 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] [2021-11-07 01:18:34,248 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-07 01:18:34,249 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:34,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:34,249 INFO L85 PathProgramCache]: Analyzing trace with hash -199769875, now seen corresponding path program 1 times [2021-11-07 01:18:34,249 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:34,249 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1367989373] [2021-11-07 01:18:34,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:34,250 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:34,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:34,579 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:34,579 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1367989373] [2021-11-07 01:18:34,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1367989373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:34,579 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:34,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 01:18:34,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582055483] [2021-11-07 01:18:34,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:18:34,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:34,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:18:34,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:18:34,580 INFO L87 Difference]: Start difference. First operand 452 states and 552 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) [2021-11-07 01:18:35,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:35,984 INFO L93 Difference]: Finished difference Result 1096 states and 1383 transitions. [2021-11-07 01:18:35,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:35,985 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 [2021-11-07 01:18:35,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:35,986 INFO L225 Difference]: With dead ends: 1096 [2021-11-07 01:18:35,986 INFO L226 Difference]: Without dead ends: 1008 [2021-11-07 01:18:35,987 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:18:35,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2021-11-07 01:18:36,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 450. [2021-11-07 01:18:36,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 438 states have (on average 1.2511415525114156) internal successors, (548), 449 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:36,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 548 transitions. [2021-11-07 01:18:36,112 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 548 transitions. Word has length 83 [2021-11-07 01:18:36,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:36,112 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 548 transitions. [2021-11-07 01:18:36,112 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) [2021-11-07 01:18:36,112 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 548 transitions. [2021-11-07 01:18:36,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:36,113 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:36,113 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] [2021-11-07 01:18:36,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-07 01:18:36,114 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:36,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:36,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1097921229, now seen corresponding path program 1 times [2021-11-07 01:18:36,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:36,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885825788] [2021-11-07 01:18:36,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:36,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:37,448 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:37,448 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:37,448 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885825788] [2021-11-07 01:18:37,448 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885825788] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:37,448 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:37,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-07 01:18:37,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680881289] [2021-11-07 01:18:37,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 01:18:37,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:37,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 01:18:37,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=782, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:18:37,451 INFO L87 Difference]: Start difference. First operand 450 states and 548 transitions. Second operand has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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) [2021-11-07 01:18:43,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:43,333 INFO L93 Difference]: Finished difference Result 1238 states and 1535 transitions. [2021-11-07 01:18:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2021-11-07 01:18:43,333 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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 [2021-11-07 01:18:43,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:43,335 INFO L225 Difference]: With dead ends: 1238 [2021-11-07 01:18:43,335 INFO L226 Difference]: Without dead ends: 1151 [2021-11-07 01:18:43,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=475, Invalid=2387, Unknown=0, NotChecked=0, Total=2862 [2021-11-07 01:18:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1151 states. [2021-11-07 01:18:43,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1151 to 467. [2021-11-07 01:18:43,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 467 states, 455 states have (on average 1.2505494505494505) internal successors, (569), 466 states have internal predecessors, (569), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:43,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 467 states to 467 states and 569 transitions. [2021-11-07 01:18:43,487 INFO L78 Accepts]: Start accepts. Automaton has 467 states and 569 transitions. Word has length 83 [2021-11-07 01:18:43,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:43,487 INFO L470 AbstractCegarLoop]: Abstraction has 467 states and 569 transitions. [2021-11-07 01:18:43,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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) [2021-11-07 01:18:43,487 INFO L276 IsEmpty]: Start isEmpty. Operand 467 states and 569 transitions. [2021-11-07 01:18:43,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:43,488 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:43,488 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] [2021-11-07 01:18:43,488 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-07 01:18:43,488 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:43,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:43,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1397509459, now seen corresponding path program 1 times [2021-11-07 01:18:43,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:43,489 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2070360373] [2021-11-07 01:18:43,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:43,489 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:43,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:43,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:43,779 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:43,779 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2070360373] [2021-11-07 01:18:43,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2070360373] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:43,779 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:43,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 01:18:43,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849816723] [2021-11-07 01:18:43,779 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:18:43,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:43,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:18:43,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:18:43,780 INFO L87 Difference]: Start difference. First operand 467 states and 569 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) [2021-11-07 01:18:45,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:45,500 INFO L93 Difference]: Finished difference Result 1753 states and 2225 transitions. [2021-11-07 01:18:45,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 01:18:45,501 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 [2021-11-07 01:18:45,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:45,503 INFO L225 Difference]: With dead ends: 1753 [2021-11-07 01:18:45,503 INFO L226 Difference]: Without dead ends: 1635 [2021-11-07 01:18:45,504 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:18:45,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1635 states. [2021-11-07 01:18:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1635 to 435. [2021-11-07 01:18:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 435 states, 424 states have (on average 1.2476415094339623) internal successors, (529), 434 states have internal predecessors, (529), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:45,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 435 states to 435 states and 529 transitions. [2021-11-07 01:18:45,665 INFO L78 Accepts]: Start accepts. Automaton has 435 states and 529 transitions. Word has length 83 [2021-11-07 01:18:45,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:45,665 INFO L470 AbstractCegarLoop]: Abstraction has 435 states and 529 transitions. [2021-11-07 01:18:45,665 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) [2021-11-07 01:18:45,665 INFO L276 IsEmpty]: Start isEmpty. Operand 435 states and 529 transitions. [2021-11-07 01:18:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:45,666 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:45,666 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] [2021-11-07 01:18:45,666 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-07 01:18:45,666 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:45,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash -355875401, now seen corresponding path program 1 times [2021-11-07 01:18:45,667 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:45,667 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852709457] [2021-11-07 01:18:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:45,667 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:45,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:45,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:45,762 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:45,762 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852709457] [2021-11-07 01:18:45,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852709457] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:45,763 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:45,763 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:45,763 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1283445306] [2021-11-07 01:18:45,763 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:45,764 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:45,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:45,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:45,764 INFO L87 Difference]: Start difference. First operand 435 states and 529 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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) [2021-11-07 01:18:46,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:46,858 INFO L93 Difference]: Finished difference Result 948 states and 1185 transitions. [2021-11-07 01:18:46,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:18:46,859 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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 [2021-11-07 01:18:46,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:46,860 INFO L225 Difference]: With dead ends: 948 [2021-11-07 01:18:46,860 INFO L226 Difference]: Without dead ends: 843 [2021-11-07 01:18:46,861 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:18:46,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 843 states. [2021-11-07 01:18:47,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 843 to 430. [2021-11-07 01:18:47,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 419 states have (on average 1.2482100238663485) internal successors, (523), 429 states have internal predecessors, (523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:47,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 523 transitions. [2021-11-07 01:18:47,029 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 523 transitions. Word has length 83 [2021-11-07 01:18:47,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:47,029 INFO L470 AbstractCegarLoop]: Abstraction has 430 states and 523 transitions. [2021-11-07 01:18:47,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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) [2021-11-07 01:18:47,030 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 523 transitions. [2021-11-07 01:18:47,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:47,030 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:47,030 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] [2021-11-07 01:18:47,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-07 01:18:47,031 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:47,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:47,031 INFO L85 PathProgramCache]: Analyzing trace with hash 2096908269, now seen corresponding path program 1 times [2021-11-07 01:18:47,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:47,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074420368] [2021-11-07 01:18:47,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:47,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:47,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:48,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:48,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:48,260 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074420368] [2021-11-07 01:18:48,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074420368] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:48,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:48,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [29] imperfect sequences [] total 29 [2021-11-07 01:18:48,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190213107] [2021-11-07 01:18:48,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-11-07 01:18:48,262 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:48,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-11-07 01:18:48,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=788, Unknown=0, NotChecked=0, Total=870 [2021-11-07 01:18:48,263 INFO L87 Difference]: Start difference. First operand 430 states and 523 transitions. Second operand has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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) [2021-11-07 01:18:53,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:53,768 INFO L93 Difference]: Finished difference Result 941 states and 1148 transitions. [2021-11-07 01:18:53,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-11-07 01:18:53,769 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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 [2021-11-07 01:18:53,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:53,771 INFO L225 Difference]: With dead ends: 941 [2021-11-07 01:18:53,771 INFO L226 Difference]: Without dead ends: 854 [2021-11-07 01:18:53,773 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=631, Invalid=2675, Unknown=0, NotChecked=0, Total=3306 [2021-11-07 01:18:53,774 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2021-11-07 01:18:53,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 443. [2021-11-07 01:18:53,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 432 states have (on average 1.2453703703703705) internal successors, (538), 442 states have internal predecessors, (538), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:53,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 538 transitions. [2021-11-07 01:18:53,982 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 538 transitions. Word has length 83 [2021-11-07 01:18:53,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:53,982 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 538 transitions. [2021-11-07 01:18:53,982 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 2.7666666666666666) internal successors, (83), 29 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) [2021-11-07 01:18:53,983 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 538 transitions. [2021-11-07 01:18:53,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:53,983 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:53,983 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] [2021-11-07 01:18:53,983 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-07 01:18:53,983 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:53,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:53,984 INFO L85 PathProgramCache]: Analyzing trace with hash -1476237766, now seen corresponding path program 1 times [2021-11-07 01:18:53,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:53,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245488319] [2021-11-07 01:18:53,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:53,984 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:54,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:54,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:54,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:54,080 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245488319] [2021-11-07 01:18:54,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1245488319] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:54,081 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:54,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:18:54,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401513432] [2021-11-07 01:18:54,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:18:54,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:54,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:18:54,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:18:54,082 INFO L87 Difference]: Start difference. First operand 443 states and 538 transitions. Second operand has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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) [2021-11-07 01:18:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:55,076 INFO L93 Difference]: Finished difference Result 821 states and 1015 transitions. [2021-11-07 01:18:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:18:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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 [2021-11-07 01:18:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:55,078 INFO L225 Difference]: With dead ends: 821 [2021-11-07 01:18:55,078 INFO L226 Difference]: Without dead ends: 815 [2021-11-07 01:18:55,078 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=273, Unknown=0, NotChecked=0, Total=380 [2021-11-07 01:18:55,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 815 states. [2021-11-07 01:18:55,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 815 to 438. [2021-11-07 01:18:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 438 states, 427 states have (on average 1.2459016393442623) internal successors, (532), 437 states have internal predecessors, (532), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:55,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 438 states to 438 states and 532 transitions. [2021-11-07 01:18:55,225 INFO L78 Accepts]: Start accepts. Automaton has 438 states and 532 transitions. Word has length 83 [2021-11-07 01:18:55,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:55,225 INFO L470 AbstractCegarLoop]: Abstraction has 438 states and 532 transitions. [2021-11-07 01:18:55,225 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.375) internal successors, (83), 7 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) [2021-11-07 01:18:55,225 INFO L276 IsEmpty]: Start isEmpty. Operand 438 states and 532 transitions. [2021-11-07 01:18:55,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2021-11-07 01:18:55,226 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:55,226 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] [2021-11-07 01:18:55,226 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-07 01:18:55,226 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:55,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:55,226 INFO L85 PathProgramCache]: Analyzing trace with hash -916119347, now seen corresponding path program 1 times [2021-11-07 01:18:55,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:55,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1030324895] [2021-11-07 01:18:55,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:55,227 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:55,518 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:55,518 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:55,518 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1030324895] [2021-11-07 01:18:55,518 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1030324895] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:55,518 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:55,518 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 01:18:55,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576166817] [2021-11-07 01:18:55,519 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:18:55,519 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:55,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:18:55,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:18:55,520 INFO L87 Difference]: Start difference. First operand 438 states and 532 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) [2021-11-07 01:18:56,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:56,419 INFO L93 Difference]: Finished difference Result 740 states and 922 transitions. [2021-11-07 01:18:56,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:18:56,419 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 [2021-11-07 01:18:56,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:56,420 INFO L225 Difference]: With dead ends: 740 [2021-11-07 01:18:56,420 INFO L226 Difference]: Without dead ends: 586 [2021-11-07 01:18:56,420 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:18:56,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2021-11-07 01:18:56,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 370. [2021-11-07 01:18:56,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 360 states have (on average 1.2444444444444445) internal successors, (448), 369 states have internal predecessors, (448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:56,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 448 transitions. [2021-11-07 01:18:56,560 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 448 transitions. Word has length 83 [2021-11-07 01:18:56,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:56,561 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 448 transitions. [2021-11-07 01:18:56,561 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) [2021-11-07 01:18:56,561 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 448 transitions. [2021-11-07 01:18:56,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:18:56,562 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:56,562 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] [2021-11-07 01:18:56,562 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-07 01:18:56,563 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:56,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:56,563 INFO L85 PathProgramCache]: Analyzing trace with hash 2131684943, now seen corresponding path program 1 times [2021-11-07 01:18:56,563 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:56,564 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92874578] [2021-11-07 01:18:56,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:56,564 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:56,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:56,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:56,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:56,865 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92874578] [2021-11-07 01:18:56,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92874578] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:56,865 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:56,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 01:18:56,866 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738251506] [2021-11-07 01:18:56,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:18:56,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:56,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:18:56,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:18:56,867 INFO L87 Difference]: Start difference. First operand 370 states and 448 transitions. Second operand has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 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) [2021-11-07 01:18:57,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:18:57,818 INFO L93 Difference]: Finished difference Result 636 states and 782 transitions. [2021-11-07 01:18:57,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-07 01:18:57,819 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 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 [2021-11-07 01:18:57,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:18:57,820 INFO L225 Difference]: With dead ends: 636 [2021-11-07 01:18:57,820 INFO L226 Difference]: Without dead ends: 544 [2021-11-07 01:18:57,820 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:18:57,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 544 states. [2021-11-07 01:18:57,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 544 to 360. [2021-11-07 01:18:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 360 states, 351 states have (on average 1.2336182336182335) internal successors, (433), 359 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:18:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 360 states to 360 states and 433 transitions. [2021-11-07 01:18:57,949 INFO L78 Accepts]: Start accepts. Automaton has 360 states and 433 transitions. Word has length 84 [2021-11-07 01:18:57,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:18:57,949 INFO L470 AbstractCegarLoop]: Abstraction has 360 states and 433 transitions. [2021-11-07 01:18:57,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.0) internal successors, (84), 11 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) [2021-11-07 01:18:57,950 INFO L276 IsEmpty]: Start isEmpty. Operand 360 states and 433 transitions. [2021-11-07 01:18:57,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:18:57,950 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:18:57,951 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] [2021-11-07 01:18:57,951 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-07 01:18:57,951 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr6ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:18:57,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:18:57,951 INFO L85 PathProgramCache]: Analyzing trace with hash -1223733489, now seen corresponding path program 1 times [2021-11-07 01:18:57,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:18:57,952 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630429580] [2021-11-07 01:18:57,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:18:57,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:18:57,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:18:58,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:18:58,272 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:18:58,272 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630429580] [2021-11-07 01:18:58,272 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630429580] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:18:58,272 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:18:58,272 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-07 01:18:58,273 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1873066192] [2021-11-07 01:18:58,273 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-07 01:18:58,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:18:58,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-07 01:18:58,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2021-11-07 01:18:58,274 INFO L87 Difference]: Start difference. First operand 360 states and 433 transitions. Second operand has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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) [2021-11-07 01:19:00,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:00,134 INFO L93 Difference]: Finished difference Result 1529 states and 1936 transitions. [2021-11-07 01:19:00,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-07 01:19:00,135 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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 [2021-11-07 01:19:00,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:00,137 INFO L225 Difference]: With dead ends: 1529 [2021-11-07 01:19:00,137 INFO L226 Difference]: Without dead ends: 1386 [2021-11-07 01:19:00,138 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=166, Invalid=536, Unknown=0, NotChecked=0, Total=702 [2021-11-07 01:19:00,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1386 states. [2021-11-07 01:19:00,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1386 to 303. [2021-11-07 01:19:00,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 297 states have (on average 1.2154882154882154) internal successors, (361), 302 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:00,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 361 transitions. [2021-11-07 01:19:00,342 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 361 transitions. Word has length 84 [2021-11-07 01:19:00,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:00,343 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 361 transitions. [2021-11-07 01:19:00,343 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.461538461538462) internal successors, (84), 12 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) [2021-11-07 01:19:00,343 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 361 transitions. [2021-11-07 01:19:00,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-11-07 01:19:00,344 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:00,344 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] [2021-11-07 01:19:00,344 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-07 01:19:00,344 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:00,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:00,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1559722417, now seen corresponding path program 1 times [2021-11-07 01:19:00,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:00,345 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82667591] [2021-11-07 01:19:00,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:00,345 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:00,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:00,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:00,584 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:00,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82667591] [2021-11-07 01:19:00,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82667591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:00,584 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:00,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:19:00,585 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863374862] [2021-11-07 01:19:00,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:19:00,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:00,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:19:00,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:19:00,586 INFO L87 Difference]: Start difference. First operand 303 states and 361 transitions. Second operand has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 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) [2021-11-07 01:19:01,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:01,334 INFO L93 Difference]: Finished difference Result 616 states and 756 transitions. [2021-11-07 01:19:01,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-07 01:19:01,335 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 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 [2021-11-07 01:19:01,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:01,335 INFO L225 Difference]: With dead ends: 616 [2021-11-07 01:19:01,336 INFO L226 Difference]: Without dead ends: 463 [2021-11-07 01:19:01,336 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=134, Invalid=328, Unknown=0, NotChecked=0, Total=462 [2021-11-07 01:19:01,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2021-11-07 01:19:01,447 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 236. [2021-11-07 01:19:01,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.206008583690987) internal successors, (281), 235 states have internal predecessors, (281), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:01,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 281 transitions. [2021-11-07 01:19:01,448 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 281 transitions. Word has length 84 [2021-11-07 01:19:01,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:01,448 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 281 transitions. [2021-11-07 01:19:01,449 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.636363636363637) internal successors, (84), 10 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) [2021-11-07 01:19:01,449 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 281 transitions. [2021-11-07 01:19:01,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:19:01,449 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:01,449 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] [2021-11-07 01:19:01,449 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-07 01:19:01,449 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:01,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:01,450 INFO L85 PathProgramCache]: Analyzing trace with hash 458104271, now seen corresponding path program 1 times [2021-11-07 01:19:01,450 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:01,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275112994] [2021-11-07 01:19:01,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:01,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:01,546 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:01,547 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:01,547 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275112994] [2021-11-07 01:19:01,547 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275112994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:01,547 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:01,547 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:19:01,548 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37287280] [2021-11-07 01:19:01,548 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:19:01,548 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:01,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:19:01,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:19:01,549 INFO L87 Difference]: Start difference. First operand 236 states and 281 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) [2021-11-07 01:19:02,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:02,076 INFO L93 Difference]: Finished difference Result 370 states and 447 transitions. [2021-11-07 01:19:02,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:19:02,076 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 [2021-11-07 01:19:02,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:02,077 INFO L225 Difference]: With dead ends: 370 [2021-11-07 01:19:02,077 INFO L226 Difference]: Without dead ends: 362 [2021-11-07 01:19:02,077 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 [2021-11-07 01:19:02,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2021-11-07 01:19:02,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 236. [2021-11-07 01:19:02,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.201716738197425) internal successors, (280), 235 states have internal predecessors, (280), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:02,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 280 transitions. [2021-11-07 01:19:02,201 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 280 transitions. Word has length 86 [2021-11-07 01:19:02,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:02,201 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 280 transitions. [2021-11-07 01:19:02,202 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) [2021-11-07 01:19:02,202 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 280 transitions. [2021-11-07 01:19:02,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2021-11-07 01:19:02,202 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:02,202 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] [2021-11-07 01:19:02,202 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-07 01:19:02,202 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:02,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:02,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1517009585, now seen corresponding path program 1 times [2021-11-07 01:19:02,203 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:02,203 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374569717] [2021-11-07 01:19:02,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:02,204 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:02,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:02,365 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:02,366 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:02,366 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374569717] [2021-11-07 01:19:02,366 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374569717] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:02,366 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:02,366 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-07 01:19:02,367 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759213408] [2021-11-07 01:19:02,367 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-07 01:19:02,367 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:02,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-07 01:19:02,368 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-11-07 01:19:02,368 INFO L87 Difference]: Start difference. First operand 236 states and 280 transitions. Second operand has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 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) [2021-11-07 01:19:04,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:04,557 INFO L93 Difference]: Finished difference Result 1183 states and 1514 transitions. [2021-11-07 01:19:04,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-07 01:19:04,558 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 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 [2021-11-07 01:19:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:04,559 INFO L225 Difference]: With dead ends: 1183 [2021-11-07 01:19:04,559 INFO L226 Difference]: Without dead ends: 1063 [2021-11-07 01:19:04,560 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=242, Invalid=688, Unknown=0, NotChecked=0, Total=930 [2021-11-07 01:19:04,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1063 states. [2021-11-07 01:19:04,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1063 to 246. [2021-11-07 01:19:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 243 states have (on average 1.1934156378600822) internal successors, (290), 245 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:04,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2021-11-07 01:19:04,684 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 86 [2021-11-07 01:19:04,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:04,684 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2021-11-07 01:19:04,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.818181818181818) internal successors, (86), 10 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) [2021-11-07 01:19:04,684 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2021-11-07 01:19:04,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-11-07 01:19:04,685 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:04,685 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, 1] [2021-11-07 01:19:04,685 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-07 01:19:04,685 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:04,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:04,686 INFO L85 PathProgramCache]: Analyzing trace with hash -1606087513, now seen corresponding path program 1 times [2021-11-07 01:19:04,686 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:04,686 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245575216] [2021-11-07 01:19:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:04,686 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:04,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:04,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:04,811 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:04,811 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245575216] [2021-11-07 01:19:04,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245575216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:04,811 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:04,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:19:04,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1655544110] [2021-11-07 01:19:04,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:19:04,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:04,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:19:04,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:19:04,813 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:05,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:05,367 INFO L93 Difference]: Finished difference Result 509 states and 623 transitions. [2021-11-07 01:19:05,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:19:05,367 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 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 87 [2021-11-07 01:19:05,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:05,368 INFO L225 Difference]: With dead ends: 509 [2021-11-07 01:19:05,368 INFO L226 Difference]: Without dead ends: 389 [2021-11-07 01:19:05,368 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=97, Invalid=245, Unknown=0, NotChecked=0, Total=342 [2021-11-07 01:19:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2021-11-07 01:19:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 236. [2021-11-07 01:19:05,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 233 states have (on average 1.1931330472103003) internal successors, (278), 235 states have internal predecessors, (278), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 278 transitions. [2021-11-07 01:19:05,486 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 278 transitions. Word has length 87 [2021-11-07 01:19:05,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:05,486 INFO L470 AbstractCegarLoop]: Abstraction has 236 states and 278 transitions. [2021-11-07 01:19:05,486 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 10.875) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:05,486 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 278 transitions. [2021-11-07 01:19:05,487 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 01:19:05,487 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:05,487 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, 1, 1] [2021-11-07 01:19:05,487 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-07 01:19:05,487 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr14ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:05,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:05,488 INFO L85 PathProgramCache]: Analyzing trace with hash 615115764, now seen corresponding path program 1 times [2021-11-07 01:19:05,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:05,488 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607483398] [2021-11-07 01:19:05,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:05,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:05,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:05,752 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:05,752 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607483398] [2021-11-07 01:19:05,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607483398] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:05,752 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:05,752 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 01:19:05,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570020028] [2021-11-07 01:19:05,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:19:05,753 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:05,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:19:05,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:19:05,754 INFO L87 Difference]: Start difference. First operand 236 states and 278 transitions. Second operand has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:06,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:06,688 INFO L93 Difference]: Finished difference Result 556 states and 688 transitions. [2021-11-07 01:19:06,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:19:06,688 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-07 01:19:06,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:06,691 INFO L225 Difference]: With dead ends: 556 [2021-11-07 01:19:06,691 INFO L226 Difference]: Without dead ends: 550 [2021-11-07 01:19:06,692 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:19:06,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 550 states. [2021-11-07 01:19:06,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 550 to 230. [2021-11-07 01:19:06,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 228 states have (on average 1.1885964912280702) internal successors, (271), 229 states have internal predecessors, (271), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:06,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 271 transitions. [2021-11-07 01:19:06,903 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 271 transitions. Word has length 88 [2021-11-07 01:19:06,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:06,904 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 271 transitions. [2021-11-07 01:19:06,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.333333333333333) internal successors, (88), 11 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:06,904 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 271 transitions. [2021-11-07 01:19:06,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-07 01:19:06,905 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:06,905 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, 1, 1, 1] [2021-11-07 01:19:06,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-07 01:19:06,905 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:06,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:06,912 INFO L85 PathProgramCache]: Analyzing trace with hash -1522049356, now seen corresponding path program 1 times [2021-11-07 01:19:06,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:06,912 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134441926] [2021-11-07 01:19:06,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:06,913 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:07,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:07,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:07,916 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134441926] [2021-11-07 01:19:07,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134441926] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:07,916 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:07,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [27] imperfect sequences [] total 27 [2021-11-07 01:19:07,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333415468] [2021-11-07 01:19:07,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-11-07 01:19:07,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:07,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-11-07 01:19:07,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2021-11-07 01:19:07,918 INFO L87 Difference]: Start difference. First operand 230 states and 271 transitions. Second operand has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:10,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:10,465 INFO L93 Difference]: Finished difference Result 394 states and 469 transitions. [2021-11-07 01:19:10,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-11-07 01:19:10,465 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 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 88 [2021-11-07 01:19:10,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:10,466 INFO L225 Difference]: With dead ends: 394 [2021-11-07 01:19:10,466 INFO L226 Difference]: Without dead ends: 385 [2021-11-07 01:19:10,467 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 442 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=404, Invalid=2146, Unknown=0, NotChecked=0, Total=2550 [2021-11-07 01:19:10,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-07 01:19:10,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 246. [2021-11-07 01:19:10,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 244 states have (on average 1.1885245901639345) internal successors, (290), 245 states have internal predecessors, (290), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:10,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 290 transitions. [2021-11-07 01:19:10,613 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 290 transitions. Word has length 88 [2021-11-07 01:19:10,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:10,613 INFO L470 AbstractCegarLoop]: Abstraction has 246 states and 290 transitions. [2021-11-07 01:19:10,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 3.142857142857143) internal successors, (88), 27 states have internal predecessors, (88), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:10,614 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 290 transitions. [2021-11-07 01:19:10,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 01:19:10,614 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:10,614 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, 1, 1, 1] [2021-11-07 01:19:10,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-07 01:19:10,615 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:10,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:10,615 INFO L85 PathProgramCache]: Analyzing trace with hash -1503027030, now seen corresponding path program 1 times [2021-11-07 01:19:10,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:10,615 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208116611] [2021-11-07 01:19:10,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:10,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:11,533 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:11,534 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:11,534 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208116611] [2021-11-07 01:19:11,534 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208116611] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:11,534 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:11,534 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-11-07 01:19:11,534 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913361962] [2021-11-07 01:19:11,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-11-07 01:19:11,535 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:11,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-11-07 01:19:11,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=377, Unknown=0, NotChecked=0, Total=420 [2021-11-07 01:19:11,536 INFO L87 Difference]: Start difference. First operand 246 states and 290 transitions. Second operand has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:14,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:14,329 INFO L93 Difference]: Finished difference Result 661 states and 813 transitions. [2021-11-07 01:19:14,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:19:14,330 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-07 01:19:14,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:14,331 INFO L225 Difference]: With dead ends: 661 [2021-11-07 01:19:14,331 INFO L226 Difference]: Without dead ends: 648 [2021-11-07 01:19:14,331 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=276, Invalid=1446, Unknown=0, NotChecked=0, Total=1722 [2021-11-07 01:19:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 648 states. [2021-11-07 01:19:14,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 648 to 266. [2021-11-07 01:19:14,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 266 states, 264 states have (on average 1.1856060606060606) internal successors, (313), 265 states have internal predecessors, (313), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:14,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 313 transitions. [2021-11-07 01:19:14,501 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 313 transitions. Word has length 89 [2021-11-07 01:19:14,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:14,501 INFO L470 AbstractCegarLoop]: Abstraction has 266 states and 313 transitions. [2021-11-07 01:19:14,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 4.238095238095238) internal successors, (89), 20 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:14,501 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 313 transitions. [2021-11-07 01:19:14,502 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-07 01:19:14,502 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:14,502 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, 1, 1, 1] [2021-11-07 01:19:14,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-07 01:19:14,503 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr12ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:14,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:14,503 INFO L85 PathProgramCache]: Analyzing trace with hash 345988239, now seen corresponding path program 1 times [2021-11-07 01:19:14,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:14,504 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371682899] [2021-11-07 01:19:14,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:14,504 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:14,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:14,802 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:14,802 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371682899] [2021-11-07 01:19:14,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371682899] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:14,802 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:14,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-07 01:19:14,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795702909] [2021-11-07 01:19:14,803 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 01:19:14,803 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:14,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 01:19:14,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-11-07 01:19:14,803 INFO L87 Difference]: Start difference. First operand 266 states and 313 transitions. Second operand has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:15,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:15,928 INFO L93 Difference]: Finished difference Result 621 states and 766 transitions. [2021-11-07 01:19:15,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:19:15,929 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 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 89 [2021-11-07 01:19:15,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:15,930 INFO L225 Difference]: With dead ends: 621 [2021-11-07 01:19:15,930 INFO L226 Difference]: Without dead ends: 605 [2021-11-07 01:19:15,930 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=378, Unknown=0, NotChecked=0, Total=506 [2021-11-07 01:19:15,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2021-11-07 01:19:16,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 217. [2021-11-07 01:19:16,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 217 states, 216 states have (on average 1.1851851851851851) internal successors, (256), 216 states have internal predecessors, (256), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 256 transitions. [2021-11-07 01:19:16,116 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 256 transitions. Word has length 89 [2021-11-07 01:19:16,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:16,117 INFO L470 AbstractCegarLoop]: Abstraction has 217 states and 256 transitions. [2021-11-07 01:19:16,117 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.416666666666667) internal successors, (89), 11 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,117 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 256 transitions. [2021-11-07 01:19:16,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-11-07 01:19:16,117 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:16,117 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:16,118 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-07 01:19:16,118 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:16,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:16,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1337256340, now seen corresponding path program 1 times [2021-11-07 01:19:16,118 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:16,119 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1020931994] [2021-11-07 01:19:16,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:16,119 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:16,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:16,168 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:16,169 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:16,169 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1020931994] [2021-11-07 01:19:16,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1020931994] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:16,169 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:16,169 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:19:16,170 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077779396] [2021-11-07 01:19:16,170 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:19:16,170 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:16,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:19:16,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:16,171 INFO L87 Difference]: Start difference. First operand 217 states and 256 transitions. Second operand has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:16,483 INFO L93 Difference]: Finished difference Result 312 states and 381 transitions. [2021-11-07 01:19:16,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:19:16,484 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 107 [2021-11-07 01:19:16,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:16,485 INFO L225 Difference]: With dead ends: 312 [2021-11-07 01:19:16,485 INFO L226 Difference]: Without dead ends: 268 [2021-11-07 01:19:16,485 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 [2021-11-07 01:19:16,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2021-11-07 01:19:16,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 258. [2021-11-07 01:19:16,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 1.2023346303501945) internal successors, (309), 257 states have internal predecessors, (309), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 309 transitions. [2021-11-07 01:19:16,767 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 309 transitions. Word has length 107 [2021-11-07 01:19:16,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:16,767 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 309 transitions. [2021-11-07 01:19:16,767 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 35.666666666666664) internal successors, (107), 3 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:16,767 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 309 transitions. [2021-11-07 01:19:16,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-11-07 01:19:16,768 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:16,768 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:16,768 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-07 01:19:16,769 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:16,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:16,769 INFO L85 PathProgramCache]: Analyzing trace with hash 1745745532, now seen corresponding path program 1 times [2021-11-07 01:19:16,769 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:16,770 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379172751] [2021-11-07 01:19:16,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:16,770 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:16,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:16,826 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:16,826 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:16,827 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379172751] [2021-11-07 01:19:16,827 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379172751] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:16,827 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:16,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:19:16,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832500900] [2021-11-07 01:19:16,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:19:16,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:16,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:19:16,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:16,829 INFO L87 Difference]: Start difference. First operand 258 states and 309 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:17,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:17,251 INFO L93 Difference]: Finished difference Result 506 states and 637 transitions. [2021-11-07 01:19:17,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:19:17,252 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 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 110 [2021-11-07 01:19:17,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:17,253 INFO L225 Difference]: With dead ends: 506 [2021-11-07 01:19:17,253 INFO L226 Difference]: Without dead ends: 382 [2021-11-07 01:19:17,253 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 [2021-11-07 01:19:17,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2021-11-07 01:19:17,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 368. [2021-11-07 01:19:17,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 367 states have (on average 1.237057220708447) internal successors, (454), 367 states have internal predecessors, (454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:17,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 454 transitions. [2021-11-07 01:19:17,559 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 454 transitions. Word has length 110 [2021-11-07 01:19:17,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:17,559 INFO L470 AbstractCegarLoop]: Abstraction has 368 states and 454 transitions. [2021-11-07 01:19:17,559 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 3 states have internal predecessors, (110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:17,559 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 454 transitions. [2021-11-07 01:19:17,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-07 01:19:17,560 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:17,560 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:17,560 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-07 01:19:17,560 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:17,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:17,560 INFO L85 PathProgramCache]: Analyzing trace with hash 86933805, now seen corresponding path program 1 times [2021-11-07 01:19:17,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:17,561 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1094461174] [2021-11-07 01:19:17,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:17,561 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:17,612 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:17,612 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:17,612 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1094461174] [2021-11-07 01:19:17,613 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1094461174] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:17,613 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:17,613 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:19:17,613 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657732829] [2021-11-07 01:19:17,613 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:19:17,614 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:17,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:19:17,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:17,614 INFO L87 Difference]: Start difference. First operand 368 states and 454 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:18,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:18,468 INFO L93 Difference]: Finished difference Result 836 states and 1072 transitions. [2021-11-07 01:19:18,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:19:18,468 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 113 [2021-11-07 01:19:18,469 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:18,469 INFO L225 Difference]: With dead ends: 836 [2021-11-07 01:19:18,469 INFO L226 Difference]: Without dead ends: 602 [2021-11-07 01:19:18,470 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 [2021-11-07 01:19:18,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-07 01:19:19,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 576. [2021-11-07 01:19:19,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 575 states have (on average 1.2626086956521738) internal successors, (726), 575 states have internal predecessors, (726), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:19,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 726 transitions. [2021-11-07 01:19:19,041 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 726 transitions. Word has length 113 [2021-11-07 01:19:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:19,041 INFO L470 AbstractCegarLoop]: Abstraction has 576 states and 726 transitions. [2021-11-07 01:19:19,041 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:19,041 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 726 transitions. [2021-11-07 01:19:19,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2021-11-07 01:19:19,041 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:19,042 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:19,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-07 01:19:19,042 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:19,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:19,043 INFO L85 PathProgramCache]: Analyzing trace with hash -99208674, now seen corresponding path program 1 times [2021-11-07 01:19:19,043 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:19,043 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76004131] [2021-11-07 01:19:19,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:19,043 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:19,099 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:19,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:19,101 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76004131] [2021-11-07 01:19:19,101 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76004131] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:19,101 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:19,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:19:19,102 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026462396] [2021-11-07 01:19:19,102 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:19:19,103 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:19,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:19:19,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:19,103 INFO L87 Difference]: Start difference. First operand 576 states and 726 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:20,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:20,399 INFO L93 Difference]: Finished difference Result 1460 states and 1888 transitions. [2021-11-07 01:19:20,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:19:20,399 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 116 [2021-11-07 01:19:20,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:20,405 INFO L225 Difference]: With dead ends: 1460 [2021-11-07 01:19:20,405 INFO L226 Difference]: Without dead ends: 1018 [2021-11-07 01:19:20,406 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 [2021-11-07 01:19:20,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1018 states. [2021-11-07 01:19:21,507 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1018 to 968. [2021-11-07 01:19:21,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 968 states, 967 states have (on average 1.2761116856256463) internal successors, (1234), 967 states have internal predecessors, (1234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:21,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 968 states to 968 states and 1234 transitions. [2021-11-07 01:19:21,509 INFO L78 Accepts]: Start accepts. Automaton has 968 states and 1234 transitions. Word has length 116 [2021-11-07 01:19:21,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:21,509 INFO L470 AbstractCegarLoop]: Abstraction has 968 states and 1234 transitions. [2021-11-07 01:19:21,509 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 3 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:21,509 INFO L276 IsEmpty]: Start isEmpty. Operand 968 states and 1234 transitions. [2021-11-07 01:19:21,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2021-11-07 01:19:21,510 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:21,510 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:21,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-07 01:19:21,510 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:21,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:21,511 INFO L85 PathProgramCache]: Analyzing trace with hash 970496512, now seen corresponding path program 1 times [2021-11-07 01:19:21,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:21,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [336004325] [2021-11-07 01:19:21,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:21,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:21,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:21,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:21,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:21,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [336004325] [2021-11-07 01:19:21,559 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [336004325] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:21,560 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:21,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:19:21,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737209445] [2021-11-07 01:19:21,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:19:21,560 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:21,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:19:21,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:21,561 INFO L87 Difference]: Start difference. First operand 968 states and 1234 transitions. Second operand has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:23,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:23,750 INFO L93 Difference]: Finished difference Result 2636 states and 3412 transitions. [2021-11-07 01:19:23,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:19:23,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 119 [2021-11-07 01:19:23,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:23,752 INFO L225 Difference]: With dead ends: 2636 [2021-11-07 01:19:23,752 INFO L226 Difference]: Without dead ends: 1802 [2021-11-07 01:19:23,753 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 [2021-11-07 01:19:23,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1802 states. [2021-11-07 01:19:25,881 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1802 to 1704. [2021-11-07 01:19:25,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1704 states, 1703 states have (on average 1.2789195537287141) internal successors, (2178), 1703 states have internal predecessors, (2178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1704 states to 1704 states and 2178 transitions. [2021-11-07 01:19:25,885 INFO L78 Accepts]: Start accepts. Automaton has 1704 states and 2178 transitions. Word has length 119 [2021-11-07 01:19:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:25,885 INFO L470 AbstractCegarLoop]: Abstraction has 1704 states and 2178 transitions. [2021-11-07 01:19:25,886 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 39.666666666666664) internal successors, (119), 3 states have internal predecessors, (119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:25,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1704 states and 2178 transitions. [2021-11-07 01:19:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-11-07 01:19:25,887 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:25,887 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:25,887 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-07 01:19:25,887 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:25,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:25,888 INFO L85 PathProgramCache]: Analyzing trace with hash 488041427, now seen corresponding path program 1 times [2021-11-07 01:19:25,888 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:25,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [410811488] [2021-11-07 01:19:25,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:25,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:25,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:25,965 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:25,965 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:25,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [410811488] [2021-11-07 01:19:25,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [410811488] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:25,966 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:25,966 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:19:25,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110961180] [2021-11-07 01:19:25,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:19:25,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:25,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:19:25,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:19:25,967 INFO L87 Difference]: Start difference. First operand 1704 states and 2178 transitions. Second operand has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:33,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:33,416 INFO L93 Difference]: Finished difference Result 6809 states and 8797 transitions. [2021-11-07 01:19:33,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-07 01:19:33,417 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 122 [2021-11-07 01:19:33,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:33,424 INFO L225 Difference]: With dead ends: 6809 [2021-11-07 01:19:33,424 INFO L226 Difference]: Without dead ends: 5239 [2021-11-07 01:19:33,427 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2021-11-07 01:19:33,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2021-11-07 01:19:36,657 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 2468. [2021-11-07 01:19:36,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2468 states, 2467 states have (on average 1.270368869071747) internal successors, (3134), 2467 states have internal predecessors, (3134), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:36,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2468 states to 2468 states and 3134 transitions. [2021-11-07 01:19:36,663 INFO L78 Accepts]: Start accepts. Automaton has 2468 states and 3134 transitions. Word has length 122 [2021-11-07 01:19:36,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:36,663 INFO L470 AbstractCegarLoop]: Abstraction has 2468 states and 3134 transitions. [2021-11-07 01:19:36,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.428571428571427) internal successors, (122), 7 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:36,663 INFO L276 IsEmpty]: Start isEmpty. Operand 2468 states and 3134 transitions. [2021-11-07 01:19:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 01:19:36,664 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:36,664 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:36,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-07 01:19:36,664 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:36,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:36,665 INFO L85 PathProgramCache]: Analyzing trace with hash 601773992, now seen corresponding path program 1 times [2021-11-07 01:19:36,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:36,665 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177577784] [2021-11-07 01:19:36,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:36,665 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:36,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:36,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:36,720 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:36,720 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177577784] [2021-11-07 01:19:36,720 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177577784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:36,720 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:36,721 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 01:19:36,721 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117867305] [2021-11-07 01:19:36,721 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 01:19:36,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:36,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 01:19:36,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 01:19:36,722 INFO L87 Difference]: Start difference. First operand 2468 states and 3134 transitions. Second operand has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:40,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:40,716 INFO L93 Difference]: Finished difference Result 5412 states and 6908 transitions. [2021-11-07 01:19:40,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 01:19:40,717 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-07 01:19:40,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:40,721 INFO L225 Difference]: With dead ends: 5412 [2021-11-07 01:19:40,721 INFO L226 Difference]: Without dead ends: 3078 [2021-11-07 01:19:40,724 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 [2021-11-07 01:19:40,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-11-07 01:19:44,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3076. [2021-11-07 01:19:44,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.263089430894309) internal successors, (3884), 3075 states have internal predecessors, (3884), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:44,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3884 transitions. [2021-11-07 01:19:44,729 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3884 transitions. Word has length 124 [2021-11-07 01:19:44,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:44,729 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3884 transitions. [2021-11-07 01:19:44,729 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 41.333333333333336) internal successors, (124), 3 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:44,730 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3884 transitions. [2021-11-07 01:19:44,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-11-07 01:19:44,731 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:44,731 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:44,731 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-07 01:19:44,731 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:44,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:44,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1582353173, now seen corresponding path program 1 times [2021-11-07 01:19:44,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:44,733 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [785408276] [2021-11-07 01:19:44,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:44,733 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:44,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:44,914 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:44,914 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:44,914 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [785408276] [2021-11-07 01:19:44,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [785408276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:44,915 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:44,915 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:19:44,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350580864] [2021-11-07 01:19:44,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:19:44,916 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:44,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:19:44,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:19:44,916 INFO L87 Difference]: Start difference. First operand 3076 states and 3884 transitions. Second operand has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:49,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:19:49,658 INFO L93 Difference]: Finished difference Result 6020 states and 7624 transitions. [2021-11-07 01:19:49,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-07 01:19:49,659 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 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 124 [2021-11-07 01:19:49,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:19:49,664 INFO L225 Difference]: With dead ends: 6020 [2021-11-07 01:19:49,664 INFO L226 Difference]: Without dead ends: 3078 [2021-11-07 01:19:49,668 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2021-11-07 01:19:49,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3078 states. [2021-11-07 01:19:54,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3078 to 3076. [2021-11-07 01:19:54,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.262439024390244) internal successors, (3882), 3075 states have internal predecessors, (3882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:54,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3882 transitions. [2021-11-07 01:19:54,031 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3882 transitions. Word has length 124 [2021-11-07 01:19:54,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:19:54,031 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3882 transitions. [2021-11-07 01:19:54,032 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.714285714285715) internal successors, (124), 7 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:19:54,032 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3882 transitions. [2021-11-07 01:19:54,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2021-11-07 01:19:54,033 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:19:54,033 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:19:54,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-07 01:19:54,033 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:19:54,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:19:54,034 INFO L85 PathProgramCache]: Analyzing trace with hash -6458196, now seen corresponding path program 1 times [2021-11-07 01:19:54,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:19:54,034 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [495292431] [2021-11-07 01:19:54,034 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:19:54,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:19:54,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:19:54,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:19:54,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:19:54,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [495292431] [2021-11-07 01:19:54,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [495292431] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:19:54,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:19:54,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:19:54,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1217017128] [2021-11-07 01:19:54,130 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 01:19:54,130 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:19:54,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 01:19:54,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-07 01:19:54,131 INFO L87 Difference]: Start difference. First operand 3076 states and 3882 transitions. Second operand has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:00,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:00,288 INFO L93 Difference]: Finished difference Result 4243 states and 5298 transitions. [2021-11-07 01:20:00,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-07 01:20:00,289 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 125 [2021-11-07 01:20:00,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:00,293 INFO L225 Difference]: With dead ends: 4243 [2021-11-07 01:20:00,293 INFO L226 Difference]: Without dead ends: 4241 [2021-11-07 01:20:00,294 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-11-07 01:20:00,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4241 states. [2021-11-07 01:20:04,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4241 to 3076. [2021-11-07 01:20:04,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.246829268292683) internal successors, (3834), 3075 states have internal predecessors, (3834), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:04,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3834 transitions. [2021-11-07 01:20:04,405 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3834 transitions. Word has length 125 [2021-11-07 01:20:04,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:04,405 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3834 transitions. [2021-11-07 01:20:04,405 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 17.857142857142858) internal successors, (125), 7 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:04,405 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3834 transitions. [2021-11-07 01:20:04,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-11-07 01:20:04,407 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:04,407 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:04,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-07 01:20:04,408 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:20:04,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:04,408 INFO L85 PathProgramCache]: Analyzing trace with hash 238346755, now seen corresponding path program 1 times [2021-11-07 01:20:04,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:20:04,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444412418] [2021-11-07 01:20:04,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:04,408 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:20:04,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:04,523 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:20:04,524 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:20:04,524 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444412418] [2021-11-07 01:20:04,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444412418] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:04,524 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:04,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-07 01:20:04,525 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416931465] [2021-11-07 01:20:04,525 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 01:20:04,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:20:04,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 01:20:04,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-07 01:20:04,526 INFO L87 Difference]: Start difference. First operand 3076 states and 3834 transitions. Second operand has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:11,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:11,398 INFO L93 Difference]: Finished difference Result 7737 states and 9664 transitions. [2021-11-07 01:20:11,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-07 01:20:11,398 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 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 144 [2021-11-07 01:20:11,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:11,404 INFO L225 Difference]: With dead ends: 7737 [2021-11-07 01:20:11,404 INFO L226 Difference]: Without dead ends: 4778 [2021-11-07 01:20:11,407 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=192, Unknown=0, NotChecked=0, Total=272 [2021-11-07 01:20:11,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4778 states. [2021-11-07 01:20:15,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4778 to 3076. [2021-11-07 01:20:15,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3076 states, 3075 states have (on average 1.2461788617886178) internal successors, (3832), 3075 states have internal predecessors, (3832), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:15,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3076 states to 3076 states and 3832 transitions. [2021-11-07 01:20:15,621 INFO L78 Accepts]: Start accepts. Automaton has 3076 states and 3832 transitions. Word has length 144 [2021-11-07 01:20:15,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:15,622 INFO L470 AbstractCegarLoop]: Abstraction has 3076 states and 3832 transitions. [2021-11-07 01:20:15,622 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 16.625) internal successors, (133), 7 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:15,622 INFO L276 IsEmpty]: Start isEmpty. Operand 3076 states and 3832 transitions. [2021-11-07 01:20:15,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2021-11-07 01:20:15,623 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:15,624 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:15,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-07 01:20:15,624 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:20:15,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:15,624 INFO L85 PathProgramCache]: Analyzing trace with hash -85742584, now seen corresponding path program 1 times [2021-11-07 01:20:15,624 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:20:15,624 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951443758] [2021-11-07 01:20:15,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:15,625 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:20:15,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:16,396 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-07 01:20:16,396 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:20:16,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951443758] [2021-11-07 01:20:16,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951443758] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 01:20:16,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 01:20:16,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2021-11-07 01:20:16,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836533649] [2021-11-07 01:20:16,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2021-11-07 01:20:16,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-07 01:20:16,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2021-11-07 01:20:16,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=587, Unknown=0, NotChecked=0, Total=650 [2021-11-07 01:20:16,398 INFO L87 Difference]: Start difference. First operand 3076 states and 3832 transitions. Second operand has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:27,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-07 01:20:27,380 INFO L93 Difference]: Finished difference Result 9011 states and 11264 transitions. [2021-11-07 01:20:27,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2021-11-07 01:20:27,380 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 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 146 [2021-11-07 01:20:27,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-07 01:20:27,387 INFO L225 Difference]: With dead ends: 9011 [2021-11-07 01:20:27,387 INFO L226 Difference]: Without dead ends: 6058 [2021-11-07 01:20:27,391 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 311 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=337, Invalid=1919, Unknown=0, NotChecked=0, Total=2256 [2021-11-07 01:20:27,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6058 states. [2021-11-07 01:20:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6058 to 3094. [2021-11-07 01:20:32,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3094 states, 3093 states have (on average 1.245392822502425) internal successors, (3852), 3093 states have internal predecessors, (3852), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:32,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3094 states to 3094 states and 3852 transitions. [2021-11-07 01:20:32,261 INFO L78 Accepts]: Start accepts. Automaton has 3094 states and 3852 transitions. Word has length 146 [2021-11-07 01:20:32,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-07 01:20:32,261 INFO L470 AbstractCegarLoop]: Abstraction has 3094 states and 3852 transitions. [2021-11-07 01:20:32,261 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 5.1923076923076925) internal successors, (135), 26 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 01:20:32,262 INFO L276 IsEmpty]: Start isEmpty. Operand 3094 states and 3852 transitions. [2021-11-07 01:20:32,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-11-07 01:20:32,263 INFO L505 BasicCegarLoop]: Found error trace [2021-11-07 01:20:32,263 INFO L513 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 01:20:32,263 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-07 01:20:32,263 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 13 more)] === [2021-11-07 01:20:32,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 01:20:32,264 INFO L85 PathProgramCache]: Analyzing trace with hash 624258686, now seen corresponding path program 1 times [2021-11-07 01:20:32,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-07 01:20:32,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434618348] [2021-11-07 01:20:32,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:32,265 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 01:20:32,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 3 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:20:36,209 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-07 01:20:36,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434618348] [2021-11-07 01:20:36,209 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434618348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 01:20:36,209 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1139544089] [2021-11-07 01:20:36,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 01:20:36,210 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 01:20:36,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/z3 [2021-11-07 01:20:36,211 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 01:20:36,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e1b79b0a-75ab-40ab-a301-df8f6e674bf6/bin/utaipan-UUZaoUuFF8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 01:20:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 01:20:36,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 927 conjuncts, 93 conjunts are in the unsatisfiable core [2021-11-07 01:20:36,766 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 01:21:08,882 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 01:21:08,883 INFO L328 TraceCheckSpWp]: Computing backward predicates...