./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 13:42:36,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 13:42:36,542 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 13:42:36,608 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 13:42:36,609 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 13:42:36,617 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 13:42:36,620 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 13:42:36,625 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 13:42:36,628 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 13:42:36,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 13:42:36,640 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 13:42:36,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 13:42:36,643 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 13:42:36,647 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 13:42:36,650 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 13:42:36,656 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 13:42:36,659 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 13:42:36,660 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 13:42:36,663 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 13:42:36,672 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 13:42:36,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 13:42:36,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 13:42:36,681 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 13:42:36,683 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 13:42:36,690 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 13:42:36,691 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 13:42:36,692 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 13:42:36,694 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 13:42:36,695 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 13:42:36,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 13:42:36,699 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 13:42:36,700 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 13:42:36,703 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 13:42:36,704 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 13:42:36,707 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 13:42:36,707 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 13:42:36,708 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 13:42:36,708 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 13:42:36,709 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 13:42:36,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 13:42:36,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 13:42:36,712 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 13:42:36,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 13:42:36,776 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 13:42:36,777 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 13:42:36,778 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 13:42:36,778 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 13:42:36,778 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 13:42:36,779 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 13:42:36,779 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 13:42:36,779 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 13:42:36,780 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 13:42:36,789 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 13:42:36,789 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 13:42:36,789 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 13:42:36,790 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 13:42:36,790 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 13:42:36,790 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 13:42:36,791 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 13:42:36,792 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 13:42:36,792 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 13:42:36,792 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 13:42:36,793 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 13:42:36,793 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 13:42:36,793 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 13:42:36,793 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 13:42:36,794 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 13:42:36,794 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 13:42:36,794 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 13:42:36,795 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 13:42:36,795 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 13:42:36,797 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 13:42:36,798 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 13:42:36,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:42:36,799 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 13:42:36,799 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 13:42:36,799 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 13:42:36,800 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 13:42:36,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 13:42:36,800 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 13:42:36,800 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 13:42:36,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 13:42:36,801 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_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6b55d0b1c42ab7aaefa2efb35454af77e64d43e1c106bfebef7445a043c9409 [2021-11-19 13:42:37,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 13:42:37,240 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 13:42:37,244 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 13:42:37,245 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 13:42:37,246 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 13:42:37,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-11-19 13:42:37,337 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/data/fcc9e56a6/e7d0c421529843e3b0f8667774cb9dfb/FLAG7ad00214e [2021-11-19 13:42:37,926 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 13:42:37,927 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c [2021-11-19 13:42:37,936 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/data/fcc9e56a6/e7d0c421529843e3b0f8667774cb9dfb/FLAG7ad00214e [2021-11-19 13:42:38,237 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/data/fcc9e56a6/e7d0c421529843e3b0f8667774cb9dfb [2021-11-19 13:42:38,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 13:42:38,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 13:42:38,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 13:42:38,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 13:42:38,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 13:42:38,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6dab2d62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38, skipping insertion in model container [2021-11-19 13:42:38,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,274 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 13:42:38,315 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 13:42:38,643 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2021-11-19 13:42:38,648 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:42:38,658 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 13:42:38,714 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/sv-benchmarks/c/weaver/parallel-bakery-3.wvr.c[5426,5439] [2021-11-19 13:42:38,715 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 13:42:38,734 INFO L208 MainTranslator]: Completed translation [2021-11-19 13:42:38,735 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38 WrapperNode [2021-11-19 13:42:38,735 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 13:42:38,736 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 13:42:38,736 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 13:42:38,736 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 13:42:38,746 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,757 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,790 INFO L137 Inliner]: procedures = 22, calls = 110, calls flagged for inlining = 16, calls inlined = 16, statements flattened = 279 [2021-11-19 13:42:38,791 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 13:42:38,792 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 13:42:38,792 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 13:42:38,792 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 13:42:38,803 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,803 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,808 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,818 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,833 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,838 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,854 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 13:42:38,856 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 13:42:38,856 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 13:42:38,856 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 13:42:38,858 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (1/1) ... [2021-11-19 13:42:38,870 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 13:42:38,886 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 13:42:38,904 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 13:42:38,942 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 13:42:38,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 13:42:38,969 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-19 13:42:38,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-19 13:42:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-19 13:42:38,970 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-19 13:42:38,970 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-19 13:42:38,971 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-19 13:42:38,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-19 13:42:38,971 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 13:42:38,972 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-19 13:42:38,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-19 13:42:38,972 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-19 13:42:38,972 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 13:42:38,973 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 13:42:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-19 13:42:38,973 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 13:42:38,975 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-19 13:42:39,120 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 13:42:39,123 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 13:42:39,611 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 13:42:39,849 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 13:42:39,850 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-19 13:42:39,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:39 BoogieIcfgContainer [2021-11-19 13:42:39,855 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 13:42:39,857 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 13:42:39,858 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 13:42:39,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 13:42:39,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 01:42:38" (1/3) ... [2021-11-19 13:42:39,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206a4f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:39, skipping insertion in model container [2021-11-19 13:42:39,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 01:42:38" (2/3) ... [2021-11-19 13:42:39,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@206a4f63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 01:42:39, skipping insertion in model container [2021-11-19 13:42:39,865 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:39" (3/3) ... [2021-11-19 13:42:39,872 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-bakery-3.wvr.c [2021-11-19 13:42:39,880 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-19 13:42:39,880 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 13:42:39,881 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-19 13:42:39,881 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-19 13:42:39,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,966 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,967 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,968 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,969 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,970 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,971 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,972 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,973 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,974 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,975 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,976 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,977 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,978 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,979 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,979 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,979 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,980 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,981 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,982 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,983 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,984 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,985 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,986 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,990 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,995 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,996 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,997 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~ite4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,997 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork0_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,998 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:39,999 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,000 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork1_#t~ite7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,001 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,001 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~ite2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,001 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,002 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,002 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,002 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,003 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-19 13:42:40,006 INFO L148 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2021-11-19 13:42:40,087 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 13:42:40,096 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 13:42:40,097 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-11-19 13:42:40,116 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-19 13:42:40,133 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 152 transitions, 328 flow [2021-11-19 13:42:40,137 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 152 transitions, 328 flow [2021-11-19 13:42:40,139 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 160 places, 152 transitions, 328 flow [2021-11-19 13:42:40,250 INFO L129 PetriNetUnfolder]: 2/149 cut-off events. [2021-11-19 13:42:40,251 INFO L130 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2021-11-19 13:42:40,254 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 149 events. 2/149 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 105 event pairs, 0 based on Foata normal form. 0/146 useless extension candidates. Maximal degree in co-relation 107. Up to 2 conditions per place. [2021-11-19 13:42:40,260 INFO L116 LiptonReduction]: Number of co-enabled transitions 2184 [2021-11-19 13:42:46,603 INFO L131 LiptonReduction]: Checked pairs total: 14218 [2021-11-19 13:42:46,603 INFO L133 LiptonReduction]: Total number of compositions: 110 [2021-11-19 13:42:46,614 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 57 places, 47 transitions, 118 flow [2021-11-19 13:42:46,795 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:46,810 INFO L276 IsEmpty]: Start isEmpty. Operand has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:46,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:46,852 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:46,853 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:46,853 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:46,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:46,861 INFO L85 PathProgramCache]: Analyzing trace with hash 1048674286, now seen corresponding path program 1 times [2021-11-19 13:42:46,869 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:46,870 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341607708] [2021-11-19 13:42:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:46,871 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:47,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:47,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:47,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:47,466 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341607708] [2021-11-19 13:42:47,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341607708] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:47,467 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:47,468 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:42:47,469 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420739829] [2021-11-19 13:42:47,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:47,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:42:47,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:47,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:42:47,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:42:47,529 INFO L87 Difference]: Start difference. First operand has 3194 states, 3193 states have (on average 3.1453178828687753) internal successors, (10043), 3193 states have internal predecessors, (10043), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:47,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:47,742 INFO L93 Difference]: Finished difference Result 3194 states and 9951 transitions. [2021-11-19 13:42:47,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:42:47,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:47,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:47,800 INFO L225 Difference]: With dead ends: 3194 [2021-11-19 13:42:47,801 INFO L226 Difference]: Without dead ends: 3194 [2021-11-19 13:42:47,802 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:42:47,807 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 14 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:47,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 16 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:42:47,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3194 states. [2021-11-19 13:42:48,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3194 to 3194. [2021-11-19 13:42:48,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3194 states, 3193 states have (on average 3.116504854368932) internal successors, (9951), 3193 states have internal predecessors, (9951), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:48,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3194 states to 3194 states and 9951 transitions. [2021-11-19 13:42:48,173 INFO L78 Accepts]: Start accepts. Automaton has 3194 states and 9951 transitions. Word has length 43 [2021-11-19 13:42:48,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:48,174 INFO L470 AbstractCegarLoop]: Abstraction has 3194 states and 9951 transitions. [2021-11-19 13:42:48,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:48,175 INFO L276 IsEmpty]: Start isEmpty. Operand 3194 states and 9951 transitions. [2021-11-19 13:42:48,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:48,191 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:48,192 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:48,192 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-19 13:42:48,193 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:48,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:48,194 INFO L85 PathProgramCache]: Analyzing trace with hash -451905624, now seen corresponding path program 2 times [2021-11-19 13:42:48,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:48,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1670586025] [2021-11-19 13:42:48,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:48,195 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:48,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:48,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:48,617 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:48,617 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1670586025] [2021-11-19 13:42:48,617 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1670586025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:48,617 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:48,617 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:42:48,618 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924192144] [2021-11-19 13:42:48,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:48,619 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:42:48,620 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:48,620 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:42:48,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:42:48,621 INFO L87 Difference]: Start difference. First operand 3194 states and 9951 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:49,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:49,169 INFO L93 Difference]: Finished difference Result 3962 states and 12341 transitions. [2021-11-19 13:42:49,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:42:49,170 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:49,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:49,216 INFO L225 Difference]: With dead ends: 3962 [2021-11-19 13:42:49,217 INFO L226 Difference]: Without dead ends: 3962 [2021-11-19 13:42:49,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:42:49,221 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 57 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 426 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:49,222 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 68 Invalid, 426 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:42:49,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2021-11-19 13:42:49,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3884. [2021-11-19 13:42:49,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3884 states, 3883 states have (on average 3.1171774401236156) internal successors, (12104), 3883 states have internal predecessors, (12104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:49,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3884 states to 3884 states and 12104 transitions. [2021-11-19 13:42:49,499 INFO L78 Accepts]: Start accepts. Automaton has 3884 states and 12104 transitions. Word has length 43 [2021-11-19 13:42:49,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:49,500 INFO L470 AbstractCegarLoop]: Abstraction has 3884 states and 12104 transitions. [2021-11-19 13:42:49,504 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:49,504 INFO L276 IsEmpty]: Start isEmpty. Operand 3884 states and 12104 transitions. [2021-11-19 13:42:49,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:49,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:49,526 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:49,527 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-19 13:42:49,528 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:49,529 INFO L85 PathProgramCache]: Analyzing trace with hash 2070643424, now seen corresponding path program 3 times [2021-11-19 13:42:49,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:49,537 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1679663852] [2021-11-19 13:42:49,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:49,540 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:49,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:49,894 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:49,894 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:49,895 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1679663852] [2021-11-19 13:42:49,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1679663852] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:49,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:49,896 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:42:49,896 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1707377996] [2021-11-19 13:42:49,896 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:49,897 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:42:49,897 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:49,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:42:49,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:42:49,899 INFO L87 Difference]: Start difference. First operand 3884 states and 12104 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:50,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:50,542 INFO L93 Difference]: Finished difference Result 8988 states and 28211 transitions. [2021-11-19 13:42:50,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:42:50,543 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:50,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:50,665 INFO L225 Difference]: With dead ends: 8988 [2021-11-19 13:42:50,665 INFO L226 Difference]: Without dead ends: 8988 [2021-11-19 13:42:50,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:42:50,668 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 214 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:50,670 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [214 Valid, 82 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:42:50,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8988 states. [2021-11-19 13:42:50,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8988 to 5214. [2021-11-19 13:42:50,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5214 states, 5213 states have (on average 3.1126031076155765) internal successors, (16226), 5213 states have internal predecessors, (16226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:51,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5214 states to 5214 states and 16226 transitions. [2021-11-19 13:42:51,037 INFO L78 Accepts]: Start accepts. Automaton has 5214 states and 16226 transitions. Word has length 43 [2021-11-19 13:42:51,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:51,038 INFO L470 AbstractCegarLoop]: Abstraction has 5214 states and 16226 transitions. [2021-11-19 13:42:51,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:51,038 INFO L276 IsEmpty]: Start isEmpty. Operand 5214 states and 16226 transitions. [2021-11-19 13:42:51,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:51,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:51,061 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:51,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-19 13:42:51,062 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:51,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:51,063 INFO L85 PathProgramCache]: Analyzing trace with hash -847909174, now seen corresponding path program 4 times [2021-11-19 13:42:51,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:51,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1657199884] [2021-11-19 13:42:51,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:51,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:51,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:51,310 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:51,311 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:51,314 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1657199884] [2021-11-19 13:42:51,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1657199884] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:51,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:51,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:42:51,318 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132877570] [2021-11-19 13:42:51,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:51,321 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:42:51,321 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:51,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:42:51,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:51,326 INFO L87 Difference]: Start difference. First operand 5214 states and 16226 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:52,181 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:52,182 INFO L93 Difference]: Finished difference Result 6147 states and 18585 transitions. [2021-11-19 13:42:52,182 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:42:52,182 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:52,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:52,211 INFO L225 Difference]: With dead ends: 6147 [2021-11-19 13:42:52,212 INFO L226 Difference]: Without dead ends: 6030 [2021-11-19 13:42:52,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:42:52,213 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 165 mSDsluCounter, 647 mSDsCounter, 0 mSdLazyCounter, 895 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 895 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:52,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 14 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 895 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:42:52,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6030 states. [2021-11-19 13:42:52,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6030 to 5254. [2021-11-19 13:42:52,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5254 states, 5253 states have (on average 3.1045117075956594) internal successors, (16308), 5253 states have internal predecessors, (16308), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:52,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5254 states to 5254 states and 16308 transitions. [2021-11-19 13:42:52,546 INFO L78 Accepts]: Start accepts. Automaton has 5254 states and 16308 transitions. Word has length 43 [2021-11-19 13:42:52,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:52,549 INFO L470 AbstractCegarLoop]: Abstraction has 5254 states and 16308 transitions. [2021-11-19 13:42:52,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:52,549 INFO L276 IsEmpty]: Start isEmpty. Operand 5254 states and 16308 transitions. [2021-11-19 13:42:52,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:52,576 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:52,576 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:52,576 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-19 13:42:52,577 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:52,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:52,581 INFO L85 PathProgramCache]: Analyzing trace with hash 1683822156, now seen corresponding path program 5 times [2021-11-19 13:42:52,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:52,582 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629316624] [2021-11-19 13:42:52,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:52,582 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:52,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:53,135 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:53,135 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:53,135 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629316624] [2021-11-19 13:42:53,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629316624] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:53,136 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:53,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:42:53,136 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457448354] [2021-11-19 13:42:53,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:53,136 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:42:53,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:53,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:42:53,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:53,137 INFO L87 Difference]: Start difference. First operand 5254 states and 16308 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:53,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:53,553 INFO L93 Difference]: Finished difference Result 5856 states and 18001 transitions. [2021-11-19 13:42:53,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:42:53,554 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:53,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:53,582 INFO L225 Difference]: With dead ends: 5856 [2021-11-19 13:42:53,582 INFO L226 Difference]: Without dead ends: 5856 [2021-11-19 13:42:53,582 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:53,584 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 52 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:53,585 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 83 Invalid, 480 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:42:53,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5856 states. [2021-11-19 13:42:53,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5856 to 5828. [2021-11-19 13:42:53,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5828 states, 5827 states have (on average 3.0785996224472285) internal successors, (17939), 5827 states have internal predecessors, (17939), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:53,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5828 states to 5828 states and 17939 transitions. [2021-11-19 13:42:53,936 INFO L78 Accepts]: Start accepts. Automaton has 5828 states and 17939 transitions. Word has length 43 [2021-11-19 13:42:53,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:53,937 INFO L470 AbstractCegarLoop]: Abstraction has 5828 states and 17939 transitions. [2021-11-19 13:42:53,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:53,937 INFO L276 IsEmpty]: Start isEmpty. Operand 5828 states and 17939 transitions. [2021-11-19 13:42:53,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:53,962 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:53,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:53,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-19 13:42:53,965 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:53,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:53,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1608713522, now seen corresponding path program 6 times [2021-11-19 13:42:53,967 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:53,967 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [760296203] [2021-11-19 13:42:53,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:53,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:54,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:54,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:54,146 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:54,146 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [760296203] [2021-11-19 13:42:54,147 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [760296203] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:54,147 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:54,147 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:42:54,147 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966207029] [2021-11-19 13:42:54,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:54,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:42:54,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:54,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:42:54,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:54,149 INFO L87 Difference]: Start difference. First operand 5828 states and 17939 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:54,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:54,972 INFO L93 Difference]: Finished difference Result 6873 states and 20602 transitions. [2021-11-19 13:42:54,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:42:54,973 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:54,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:55,005 INFO L225 Difference]: With dead ends: 6873 [2021-11-19 13:42:55,006 INFO L226 Difference]: Without dead ends: 6502 [2021-11-19 13:42:55,006 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:42:55,007 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 176 mSDsluCounter, 629 mSDsCounter, 0 mSdLazyCounter, 871 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 874 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 871 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:55,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [176 Valid, 16 Invalid, 874 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 871 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:42:55,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2021-11-19 13:42:55,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 5698. [2021-11-19 13:42:55,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 5697 states have (on average 3.072845357205547) internal successors, (17506), 5697 states have internal predecessors, (17506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:55,353 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 17506 transitions. [2021-11-19 13:42:55,353 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 17506 transitions. Word has length 43 [2021-11-19 13:42:55,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:55,354 INFO L470 AbstractCegarLoop]: Abstraction has 5698 states and 17506 transitions. [2021-11-19 13:42:55,354 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:55,354 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 17506 transitions. [2021-11-19 13:42:55,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:55,381 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:55,382 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:55,382 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-19 13:42:55,382 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:55,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:55,383 INFO L85 PathProgramCache]: Analyzing trace with hash 685036104, now seen corresponding path program 7 times [2021-11-19 13:42:55,383 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:55,384 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191468000] [2021-11-19 13:42:55,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:55,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:55,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:55,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:55,511 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:55,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191468000] [2021-11-19 13:42:55,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191468000] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:55,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:55,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:42:55,513 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125820097] [2021-11-19 13:42:55,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:55,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:42:55,514 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:55,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:42:55,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:42:55,519 INFO L87 Difference]: Start difference. First operand 5698 states and 17506 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:55,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:55,659 INFO L93 Difference]: Finished difference Result 5450 states and 16484 transitions. [2021-11-19 13:42:55,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:42:55,660 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:55,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:55,691 INFO L225 Difference]: With dead ends: 5450 [2021-11-19 13:42:55,691 INFO L226 Difference]: Without dead ends: 5450 [2021-11-19 13:42:55,691 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:42:55,693 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:55,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:42:55,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5450 states. [2021-11-19 13:42:55,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5450 to 5450. [2021-11-19 13:42:55,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5450 states, 5449 states have (on average 3.0251422279317306) internal successors, (16484), 5449 states have internal predecessors, (16484), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:55,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5450 states to 5450 states and 16484 transitions. [2021-11-19 13:42:55,990 INFO L78 Accepts]: Start accepts. Automaton has 5450 states and 16484 transitions. Word has length 43 [2021-11-19 13:42:55,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:55,991 INFO L470 AbstractCegarLoop]: Abstraction has 5450 states and 16484 transitions. [2021-11-19 13:42:55,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:55,991 INFO L276 IsEmpty]: Start isEmpty. Operand 5450 states and 16484 transitions. [2021-11-19 13:42:56,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:56,014 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:56,014 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:56,014 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-19 13:42:56,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:56,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:56,016 INFO L85 PathProgramCache]: Analyzing trace with hash -117846452, now seen corresponding path program 8 times [2021-11-19 13:42:56,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:56,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683082885] [2021-11-19 13:42:56,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:56,016 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:56,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:56,293 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:56,293 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683082885] [2021-11-19 13:42:56,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683082885] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:56,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:56,294 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:42:56,294 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321147366] [2021-11-19 13:42:56,294 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:56,295 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:42:56,295 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:42:56,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:42:56,296 INFO L87 Difference]: Start difference. First operand 5450 states and 16484 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:56,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:56,780 INFO L93 Difference]: Finished difference Result 5612 states and 16903 transitions. [2021-11-19 13:42:56,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:42:56,781 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:56,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:56,806 INFO L225 Difference]: With dead ends: 5612 [2021-11-19 13:42:56,806 INFO L226 Difference]: Without dead ends: 5466 [2021-11-19 13:42:56,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:42:56,809 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 33 mSDsluCounter, 334 mSDsCounter, 0 mSdLazyCounter, 613 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 626 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:56,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 124 Invalid, 626 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 613 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:42:56,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2021-11-19 13:42:57,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 5466. [2021-11-19 13:42:57,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5466 states, 5465 states have (on average 3.02067703568161) internal successors, (16508), 5465 states have internal predecessors, (16508), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:57,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5466 states to 5466 states and 16508 transitions. [2021-11-19 13:42:57,081 INFO L78 Accepts]: Start accepts. Automaton has 5466 states and 16508 transitions. Word has length 43 [2021-11-19 13:42:57,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:57,082 INFO L470 AbstractCegarLoop]: Abstraction has 5466 states and 16508 transitions. [2021-11-19 13:42:57,082 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:57,083 INFO L276 IsEmpty]: Start isEmpty. Operand 5466 states and 16508 transitions. [2021-11-19 13:42:57,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:57,102 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:57,102 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:57,102 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-19 13:42:57,103 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:57,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:57,104 INFO L85 PathProgramCache]: Analyzing trace with hash -395847606, now seen corresponding path program 9 times [2021-11-19 13:42:57,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:57,104 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [343681153] [2021-11-19 13:42:57,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:57,105 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:57,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:57,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:57,417 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:57,417 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [343681153] [2021-11-19 13:42:57,417 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [343681153] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:57,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:57,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:42:57,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [462481848] [2021-11-19 13:42:57,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:57,419 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:42:57,419 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:57,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:42:57,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:57,420 INFO L87 Difference]: Start difference. First operand 5466 states and 16508 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:57,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:57,806 INFO L93 Difference]: Finished difference Result 6444 states and 19425 transitions. [2021-11-19 13:42:57,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:42:57,807 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:57,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:57,837 INFO L225 Difference]: With dead ends: 6444 [2021-11-19 13:42:57,838 INFO L226 Difference]: Without dead ends: 6444 [2021-11-19 13:42:57,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:42:57,839 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 74 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 407 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:57,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 64 Invalid, 407 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:42:57,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6444 states. [2021-11-19 13:42:58,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6444 to 5472. [2021-11-19 13:42:58,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5471 states have (on average 3.0182781941144214) internal successors, (16513), 5471 states have internal predecessors, (16513), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:58,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 16513 transitions. [2021-11-19 13:42:58,190 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 16513 transitions. Word has length 43 [2021-11-19 13:42:58,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:58,190 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 16513 transitions. [2021-11-19 13:42:58,190 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:58,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 16513 transitions. [2021-11-19 13:42:58,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:58,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:58,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:58,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-19 13:42:58,209 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:58,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:58,210 INFO L85 PathProgramCache]: Analyzing trace with hash -24868694, now seen corresponding path program 10 times [2021-11-19 13:42:58,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:58,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1555314977] [2021-11-19 13:42:58,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:58,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:58,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:58,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:58,645 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:58,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1555314977] [2021-11-19 13:42:58,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1555314977] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:58,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:58,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:42:58,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788423113] [2021-11-19 13:42:58,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:58,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:42:58,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:58,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:42:58,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:58,648 INFO L87 Difference]: Start difference. First operand 5472 states and 16513 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:59,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:42:59,138 INFO L93 Difference]: Finished difference Result 5626 states and 16900 transitions. [2021-11-19 13:42:59,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:42:59,139 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:42:59,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:42:59,183 INFO L225 Difference]: With dead ends: 5626 [2021-11-19 13:42:59,183 INFO L226 Difference]: Without dead ends: 5484 [2021-11-19 13:42:59,184 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:42:59,185 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 40 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 591 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:42:59,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 102 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 591 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:42:59,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5484 states. [2021-11-19 13:42:59,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5484 to 5472. [2021-11-19 13:42:59,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5472 states, 5471 states have (on average 3.017912630232133) internal successors, (16511), 5471 states have internal predecessors, (16511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:59,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5472 states to 5472 states and 16511 transitions. [2021-11-19 13:42:59,467 INFO L78 Accepts]: Start accepts. Automaton has 5472 states and 16511 transitions. Word has length 43 [2021-11-19 13:42:59,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:42:59,468 INFO L470 AbstractCegarLoop]: Abstraction has 5472 states and 16511 transitions. [2021-11-19 13:42:59,468 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:42:59,468 INFO L276 IsEmpty]: Start isEmpty. Operand 5472 states and 16511 transitions. [2021-11-19 13:42:59,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:42:59,490 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:42:59,490 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:42:59,490 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-19 13:42:59,490 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:42:59,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:42:59,491 INFO L85 PathProgramCache]: Analyzing trace with hash -148383666, now seen corresponding path program 11 times [2021-11-19 13:42:59,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:42:59,492 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [737143275] [2021-11-19 13:42:59,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:42:59,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:42:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:42:59,788 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:42:59,789 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:42:59,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [737143275] [2021-11-19 13:42:59,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [737143275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:42:59,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:42:59,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:42:59,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678327193] [2021-11-19 13:42:59,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:42:59,791 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:42:59,791 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:42:59,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:42:59,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:42:59,792 INFO L87 Difference]: Start difference. First operand 5472 states and 16511 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:00,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:00,397 INFO L93 Difference]: Finished difference Result 5854 states and 17495 transitions. [2021-11-19 13:43:00,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:43:00,398 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:00,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:00,423 INFO L225 Difference]: With dead ends: 5854 [2021-11-19 13:43:00,423 INFO L226 Difference]: Without dead ends: 5576 [2021-11-19 13:43:00,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:43:00,425 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 116 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 638 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 148 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 638 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:00,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 148 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 638 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:00,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5576 states. [2021-11-19 13:43:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5576 to 5474. [2021-11-19 13:43:00,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5474 states, 5473 states have (on average 3.0122419148547412) internal successors, (16486), 5473 states have internal predecessors, (16486), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:00,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5474 states to 5474 states and 16486 transitions. [2021-11-19 13:43:00,644 INFO L78 Accepts]: Start accepts. Automaton has 5474 states and 16486 transitions. Word has length 43 [2021-11-19 13:43:00,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:00,644 INFO L470 AbstractCegarLoop]: Abstraction has 5474 states and 16486 transitions. [2021-11-19 13:43:00,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:00,645 INFO L276 IsEmpty]: Start isEmpty. Operand 5474 states and 16486 transitions. [2021-11-19 13:43:00,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:00,667 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:00,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:00,668 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-19 13:43:00,668 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:00,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:00,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1950052274, now seen corresponding path program 12 times [2021-11-19 13:43:00,669 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:00,669 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2119310781] [2021-11-19 13:43:00,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:00,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:01,062 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:01,062 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2119310781] [2021-11-19 13:43:01,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2119310781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:01,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:01,063 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:01,063 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531458695] [2021-11-19 13:43:01,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:01,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:01,064 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:01,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:01,065 INFO L87 Difference]: Start difference. First operand 5474 states and 16486 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:01,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:01,478 INFO L93 Difference]: Finished difference Result 5754 states and 17216 transitions. [2021-11-19 13:43:01,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:01,479 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:01,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:01,501 INFO L225 Difference]: With dead ends: 5754 [2021-11-19 13:43:01,501 INFO L226 Difference]: Without dead ends: 5482 [2021-11-19 13:43:01,501 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:01,502 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 30 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 550 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:01,503 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 83 Invalid, 550 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:01,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5482 states. [2021-11-19 13:43:01,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5482 to 5478. [2021-11-19 13:43:01,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5478 states, 5477 states have (on average 3.011137484024101) internal successors, (16492), 5477 states have internal predecessors, (16492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:01,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5478 states to 5478 states and 16492 transitions. [2021-11-19 13:43:01,684 INFO L78 Accepts]: Start accepts. Automaton has 5478 states and 16492 transitions. Word has length 43 [2021-11-19 13:43:01,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:01,685 INFO L470 AbstractCegarLoop]: Abstraction has 5478 states and 16492 transitions. [2021-11-19 13:43:01,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:01,685 INFO L276 IsEmpty]: Start isEmpty. Operand 5478 states and 16492 transitions. [2021-11-19 13:43:01,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:01,705 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:01,705 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:01,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-19 13:43:01,706 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:01,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1933589320, now seen corresponding path program 13 times [2021-11-19 13:43:01,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:01,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1506848982] [2021-11-19 13:43:01,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:01,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:01,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:01,957 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:01,957 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1506848982] [2021-11-19 13:43:01,958 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1506848982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:01,958 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:01,958 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:01,958 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985961471] [2021-11-19 13:43:01,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:01,959 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:01,959 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:01,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:01,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:01,959 INFO L87 Difference]: Start difference. First operand 5478 states and 16492 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:02,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:02,549 INFO L93 Difference]: Finished difference Result 5966 states and 17833 transitions. [2021-11-19 13:43:02,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:02,550 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:02,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:02,573 INFO L225 Difference]: With dead ends: 5966 [2021-11-19 13:43:02,573 INFO L226 Difference]: Without dead ends: 5566 [2021-11-19 13:43:02,574 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:02,576 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 54 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 738 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 124 SdHoareTripleChecker+Invalid, 754 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:02,577 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 124 Invalid, 754 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 738 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:02,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5566 states. [2021-11-19 13:43:02,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5566 to 5412. [2021-11-19 13:43:02,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5412 states, 5411 states have (on average 2.998151912770283) internal successors, (16223), 5411 states have internal predecessors, (16223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:02,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5412 states to 5412 states and 16223 transitions. [2021-11-19 13:43:02,794 INFO L78 Accepts]: Start accepts. Automaton has 5412 states and 16223 transitions. Word has length 43 [2021-11-19 13:43:02,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:02,794 INFO L470 AbstractCegarLoop]: Abstraction has 5412 states and 16223 transitions. [2021-11-19 13:43:02,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:02,795 INFO L276 IsEmpty]: Start isEmpty. Operand 5412 states and 16223 transitions. [2021-11-19 13:43:02,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:02,811 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:02,811 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:02,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-19 13:43:02,812 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:02,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2091244310, now seen corresponding path program 14 times [2021-11-19 13:43:02,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:02,813 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377058512] [2021-11-19 13:43:02,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:02,814 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:03,002 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:03,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377058512] [2021-11-19 13:43:03,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377058512] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:03,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:03,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:03,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270408976] [2021-11-19 13:43:03,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:03,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:03,005 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:03,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:03,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:03,006 INFO L87 Difference]: Start difference. First operand 5412 states and 16223 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:03,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:03,862 INFO L93 Difference]: Finished difference Result 6175 states and 18068 transitions. [2021-11-19 13:43:03,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:03,863 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:03,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:03,889 INFO L225 Difference]: With dead ends: 6175 [2021-11-19 13:43:03,890 INFO L226 Difference]: Without dead ends: 5962 [2021-11-19 13:43:03,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:43:03,891 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 172 mSDsluCounter, 671 mSDsCounter, 0 mSdLazyCounter, 929 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 929 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:03,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 14 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 929 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 13:43:03,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2021-11-19 13:43:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5364. [2021-11-19 13:43:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5364 states, 5363 states have (on average 2.9884393063583814) internal successors, (16027), 5363 states have internal predecessors, (16027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:04,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5364 states to 5364 states and 16027 transitions. [2021-11-19 13:43:04,138 INFO L78 Accepts]: Start accepts. Automaton has 5364 states and 16027 transitions. Word has length 43 [2021-11-19 13:43:04,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:04,138 INFO L470 AbstractCegarLoop]: Abstraction has 5364 states and 16027 transitions. [2021-11-19 13:43:04,139 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:04,139 INFO L276 IsEmpty]: Start isEmpty. Operand 5364 states and 16027 transitions. [2021-11-19 13:43:04,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:04,155 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:04,155 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:04,155 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-19 13:43:04,156 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:04,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:04,156 INFO L85 PathProgramCache]: Analyzing trace with hash -2028285206, now seen corresponding path program 15 times [2021-11-19 13:43:04,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:04,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208323381] [2021-11-19 13:43:04,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:04,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:04,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:04,415 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:04,415 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208323381] [2021-11-19 13:43:04,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208323381] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:04,416 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:04,416 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:04,416 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [511251957] [2021-11-19 13:43:04,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:04,417 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:04,417 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:04,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:04,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:04,418 INFO L87 Difference]: Start difference. First operand 5364 states and 16027 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:05,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:05,019 INFO L93 Difference]: Finished difference Result 6450 states and 19279 transitions. [2021-11-19 13:43:05,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:05,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:05,020 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:05,045 INFO L225 Difference]: With dead ends: 6450 [2021-11-19 13:43:05,046 INFO L226 Difference]: Without dead ends: 6402 [2021-11-19 13:43:05,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:05,051 INFO L933 BasicCegarLoop]: 28 mSDtfsCounter, 86 mSDsluCounter, 423 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 182 SdHoareTripleChecker+Invalid, 761 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:05,051 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [86 Valid, 182 Invalid, 761 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [42 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:05,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6402 states. [2021-11-19 13:43:05,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6402 to 5522. [2021-11-19 13:43:05,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5522 states, 5521 states have (on average 2.9798949465676507) internal successors, (16452), 5521 states have internal predecessors, (16452), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:05,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5522 states to 5522 states and 16452 transitions. [2021-11-19 13:43:05,235 INFO L78 Accepts]: Start accepts. Automaton has 5522 states and 16452 transitions. Word has length 43 [2021-11-19 13:43:05,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:05,236 INFO L470 AbstractCegarLoop]: Abstraction has 5522 states and 16452 transitions. [2021-11-19 13:43:05,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:05,236 INFO L276 IsEmpty]: Start isEmpty. Operand 5522 states and 16452 transitions. [2021-11-19 13:43:05,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:05,250 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:05,250 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:05,250 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-19 13:43:05,250 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:05,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:05,251 INFO L85 PathProgramCache]: Analyzing trace with hash 2071784584, now seen corresponding path program 16 times [2021-11-19 13:43:05,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:05,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649873912] [2021-11-19 13:43:05,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:05,252 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:05,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:05,507 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:05,507 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1649873912] [2021-11-19 13:43:05,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1649873912] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:05,510 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:05,511 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:05,511 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148717172] [2021-11-19 13:43:05,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:05,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:05,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:05,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:05,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:05,514 INFO L87 Difference]: Start difference. First operand 5522 states and 16452 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:05,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:05,857 INFO L93 Difference]: Finished difference Result 6672 states and 19848 transitions. [2021-11-19 13:43:05,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:05,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:05,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:05,879 INFO L225 Difference]: With dead ends: 6672 [2021-11-19 13:43:05,879 INFO L226 Difference]: Without dead ends: 6364 [2021-11-19 13:43:05,880 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:05,880 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 196 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:05,881 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 62 Invalid, 382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:05,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6364 states. [2021-11-19 13:43:06,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6364 to 6112. [2021-11-19 13:43:06,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6112 states, 6111 states have (on average 2.9947635411552938) internal successors, (18301), 6111 states have internal predecessors, (18301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:06,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6112 states to 6112 states and 18301 transitions. [2021-11-19 13:43:06,073 INFO L78 Accepts]: Start accepts. Automaton has 6112 states and 18301 transitions. Word has length 43 [2021-11-19 13:43:06,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:06,074 INFO L470 AbstractCegarLoop]: Abstraction has 6112 states and 18301 transitions. [2021-11-19 13:43:06,074 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:06,074 INFO L276 IsEmpty]: Start isEmpty. Operand 6112 states and 18301 transitions. [2021-11-19 13:43:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:06,089 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:06,089 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:06,089 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-19 13:43:06,089 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:06,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:06,090 INFO L85 PathProgramCache]: Analyzing trace with hash -2027516912, now seen corresponding path program 17 times [2021-11-19 13:43:06,090 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:06,090 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393320815] [2021-11-19 13:43:06,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:06,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:06,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:06,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:06,316 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:06,316 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393320815] [2021-11-19 13:43:06,317 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393320815] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:06,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:06,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:06,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001098047] [2021-11-19 13:43:06,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:06,318 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:06,318 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:06,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:06,319 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:06,319 INFO L87 Difference]: Start difference. First operand 6112 states and 18301 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:06,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:06,677 INFO L93 Difference]: Finished difference Result 6284 states and 18733 transitions. [2021-11-19 13:43:06,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:06,678 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:06,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:06,699 INFO L225 Difference]: With dead ends: 6284 [2021-11-19 13:43:06,699 INFO L226 Difference]: Without dead ends: 6284 [2021-11-19 13:43:06,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:06,701 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 42 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 485 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:06,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 102 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 485 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:06,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6284 states. [2021-11-19 13:43:06,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6284 to 6240. [2021-11-19 13:43:06,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6240 states, 6239 states have (on average 2.987497996473794) internal successors, (18639), 6239 states have internal predecessors, (18639), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:06,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6240 states to 6240 states and 18639 transitions. [2021-11-19 13:43:06,894 INFO L78 Accepts]: Start accepts. Automaton has 6240 states and 18639 transitions. Word has length 43 [2021-11-19 13:43:06,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:06,894 INFO L470 AbstractCegarLoop]: Abstraction has 6240 states and 18639 transitions. [2021-11-19 13:43:06,894 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:06,895 INFO L276 IsEmpty]: Start isEmpty. Operand 6240 states and 18639 transitions. [2021-11-19 13:43:06,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:06,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:06,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:06,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-19 13:43:06,914 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:06,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:06,915 INFO L85 PathProgramCache]: Analyzing trace with hash 650602738, now seen corresponding path program 18 times [2021-11-19 13:43:06,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:06,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624317779] [2021-11-19 13:43:06,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:06,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:06,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:07,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:07,167 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:07,167 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624317779] [2021-11-19 13:43:07,167 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624317779] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:07,167 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:07,168 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:07,168 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717209280] [2021-11-19 13:43:07,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:07,168 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:07,168 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:07,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:07,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:07,169 INFO L87 Difference]: Start difference. First operand 6240 states and 18639 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:07,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:07,631 INFO L93 Difference]: Finished difference Result 9626 states and 29004 transitions. [2021-11-19 13:43:07,632 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:07,632 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:07,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:07,664 INFO L225 Difference]: With dead ends: 9626 [2021-11-19 13:43:07,664 INFO L226 Difference]: Without dead ends: 9412 [2021-11-19 13:43:07,665 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:07,666 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 70 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:07,666 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 106 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:07,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9412 states. [2021-11-19 13:43:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9412 to 6252. [2021-11-19 13:43:07,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6252 states, 6251 states have (on average 2.9854423292273236) internal successors, (18662), 6251 states have internal predecessors, (18662), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:07,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6252 states to 6252 states and 18662 transitions. [2021-11-19 13:43:07,910 INFO L78 Accepts]: Start accepts. Automaton has 6252 states and 18662 transitions. Word has length 43 [2021-11-19 13:43:07,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:07,910 INFO L470 AbstractCegarLoop]: Abstraction has 6252 states and 18662 transitions. [2021-11-19 13:43:07,911 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:07,911 INFO L276 IsEmpty]: Start isEmpty. Operand 6252 states and 18662 transitions. [2021-11-19 13:43:07,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:07,933 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:07,933 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:07,934 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-19 13:43:07,934 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:07,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:07,935 INFO L85 PathProgramCache]: Analyzing trace with hash -868389644, now seen corresponding path program 19 times [2021-11-19 13:43:07,935 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:07,935 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212965486] [2021-11-19 13:43:07,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:07,936 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:08,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:08,090 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:08,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212965486] [2021-11-19 13:43:08,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212965486] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:08,091 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:08,091 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:08,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198439665] [2021-11-19 13:43:08,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:08,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:08,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:08,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:08,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:08,094 INFO L87 Difference]: Start difference. First operand 6252 states and 18662 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:08,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:08,838 INFO L93 Difference]: Finished difference Result 7211 states and 21011 transitions. [2021-11-19 13:43:08,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:08,839 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:08,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:08,862 INFO L225 Difference]: With dead ends: 7211 [2021-11-19 13:43:08,862 INFO L226 Difference]: Without dead ends: 6868 [2021-11-19 13:43:08,863 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:43:08,864 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 208 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 878 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:08,864 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 13 Invalid, 878 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:43:08,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6868 states. [2021-11-19 13:43:09,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6868 to 6172. [2021-11-19 13:43:09,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6172 states, 6171 states have (on average 2.9753686598606386) internal successors, (18361), 6171 states have internal predecessors, (18361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:09,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6172 states to 6172 states and 18361 transitions. [2021-11-19 13:43:09,088 INFO L78 Accepts]: Start accepts. Automaton has 6172 states and 18361 transitions. Word has length 43 [2021-11-19 13:43:09,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:09,088 INFO L470 AbstractCegarLoop]: Abstraction has 6172 states and 18361 transitions. [2021-11-19 13:43:09,089 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:09,089 INFO L276 IsEmpty]: Start isEmpty. Operand 6172 states and 18361 transitions. [2021-11-19 13:43:09,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:09,187 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:09,188 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:09,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-19 13:43:09,188 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:09,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:09,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1923406406, now seen corresponding path program 20 times [2021-11-19 13:43:09,189 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:09,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906031109] [2021-11-19 13:43:09,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:09,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:09,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:09,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:09,445 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:09,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906031109] [2021-11-19 13:43:09,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906031109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:09,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:09,446 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:09,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912351615] [2021-11-19 13:43:09,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:09,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:09,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:09,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:09,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:09,448 INFO L87 Difference]: Start difference. First operand 6172 states and 18361 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:09,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:09,783 INFO L93 Difference]: Finished difference Result 6648 states and 19634 transitions. [2021-11-19 13:43:09,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:09,784 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:09,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:09,805 INFO L225 Difference]: With dead ends: 6648 [2021-11-19 13:43:09,806 INFO L226 Difference]: Without dead ends: 6502 [2021-11-19 13:43:09,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:09,809 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 67 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 343 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:09,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 62 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 343 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:09,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6502 states. [2021-11-19 13:43:09,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6502 to 6296. [2021-11-19 13:43:09,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 6295 states have (on average 2.9674344718030183) internal successors, (18680), 6295 states have internal predecessors, (18680), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:10,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 18680 transitions. [2021-11-19 13:43:10,019 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 18680 transitions. Word has length 43 [2021-11-19 13:43:10,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:10,019 INFO L470 AbstractCegarLoop]: Abstraction has 6296 states and 18680 transitions. [2021-11-19 13:43:10,020 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:10,020 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 18680 transitions. [2021-11-19 13:43:10,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:10,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:10,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:10,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-19 13:43:10,037 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:10,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:10,037 INFO L85 PathProgramCache]: Analyzing trace with hash -1627941446, now seen corresponding path program 21 times [2021-11-19 13:43:10,038 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:10,038 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16597961] [2021-11-19 13:43:10,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:10,038 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:10,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:10,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:10,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16597961] [2021-11-19 13:43:10,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16597961] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:10,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:10,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:10,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423133453] [2021-11-19 13:43:10,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:10,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:10,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:10,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:10,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:10,239 INFO L87 Difference]: Start difference. First operand 6296 states and 18680 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:10,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:10,484 INFO L93 Difference]: Finished difference Result 7362 states and 21513 transitions. [2021-11-19 13:43:10,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:10,485 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:10,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:10,505 INFO L225 Difference]: With dead ends: 7362 [2021-11-19 13:43:10,505 INFO L226 Difference]: Without dead ends: 7362 [2021-11-19 13:43:10,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:10,506 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 101 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:10,507 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [101 Valid, 52 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:10,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7362 states. [2021-11-19 13:43:10,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7362 to 6854. [2021-11-19 13:43:10,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6854 states, 6853 states have (on average 2.949073398511601) internal successors, (20210), 6853 states have internal predecessors, (20210), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:10,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6854 states to 6854 states and 20210 transitions. [2021-11-19 13:43:10,717 INFO L78 Accepts]: Start accepts. Automaton has 6854 states and 20210 transitions. Word has length 43 [2021-11-19 13:43:10,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:10,719 INFO L470 AbstractCegarLoop]: Abstraction has 6854 states and 20210 transitions. [2021-11-19 13:43:10,719 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:10,719 INFO L276 IsEmpty]: Start isEmpty. Operand 6854 states and 20210 transitions. [2021-11-19 13:43:10,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:10,736 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:10,736 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:10,736 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-19 13:43:10,737 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:10,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:10,737 INFO L85 PathProgramCache]: Analyzing trace with hash 1344094068, now seen corresponding path program 22 times [2021-11-19 13:43:10,737 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:10,738 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557987321] [2021-11-19 13:43:10,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:10,738 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:10,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:10,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:10,960 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:10,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557987321] [2021-11-19 13:43:10,960 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557987321] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:10,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:10,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:43:10,961 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528066662] [2021-11-19 13:43:10,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:10,962 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:43:10,962 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:10,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:43:10,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:10,963 INFO L87 Difference]: Start difference. First operand 6854 states and 20210 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:11,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:11,171 INFO L93 Difference]: Finished difference Result 6820 states and 20044 transitions. [2021-11-19 13:43:11,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:11,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:11,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:11,185 INFO L225 Difference]: With dead ends: 6820 [2021-11-19 13:43:11,185 INFO L226 Difference]: Without dead ends: 6766 [2021-11-19 13:43:11,185 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:11,186 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 28 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 336 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:11,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 60 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 336 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:11,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6766 states. [2021-11-19 13:43:11,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6766 to 6672. [2021-11-19 13:43:11,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6672 states, 6671 states have (on average 2.9514315694798383) internal successors, (19689), 6671 states have internal predecessors, (19689), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:11,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6672 states to 6672 states and 19689 transitions. [2021-11-19 13:43:11,363 INFO L78 Accepts]: Start accepts. Automaton has 6672 states and 19689 transitions. Word has length 43 [2021-11-19 13:43:11,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:11,363 INFO L470 AbstractCegarLoop]: Abstraction has 6672 states and 19689 transitions. [2021-11-19 13:43:11,363 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:11,363 INFO L276 IsEmpty]: Start isEmpty. Operand 6672 states and 19689 transitions. [2021-11-19 13:43:11,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:11,378 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:11,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:11,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-19 13:43:11,379 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:11,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -1952346524, now seen corresponding path program 23 times [2021-11-19 13:43:11,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:11,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825706429] [2021-11-19 13:43:11,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:11,381 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:11,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:11,555 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:11,555 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825706429] [2021-11-19 13:43:11,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825706429] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:11,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:11,555 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:11,557 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1663965016] [2021-11-19 13:43:11,557 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:11,558 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:11,558 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:11,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:11,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:11,559 INFO L87 Difference]: Start difference. First operand 6672 states and 19689 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:11,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:11,818 INFO L93 Difference]: Finished difference Result 8824 states and 26195 transitions. [2021-11-19 13:43:11,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:11,819 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:11,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:11,841 INFO L225 Difference]: With dead ends: 8824 [2021-11-19 13:43:11,842 INFO L226 Difference]: Without dead ends: 8224 [2021-11-19 13:43:11,842 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:11,844 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 61 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 232 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:11,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 38 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 232 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:11,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8224 states. [2021-11-19 13:43:12,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8224 to 6992. [2021-11-19 13:43:12,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6992 states, 6991 states have (on average 2.9562294378486627) internal successors, (20667), 6991 states have internal predecessors, (20667), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:12,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6992 states to 6992 states and 20667 transitions. [2021-11-19 13:43:12,054 INFO L78 Accepts]: Start accepts. Automaton has 6992 states and 20667 transitions. Word has length 43 [2021-11-19 13:43:12,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:12,054 INFO L470 AbstractCegarLoop]: Abstraction has 6992 states and 20667 transitions. [2021-11-19 13:43:12,054 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:12,055 INFO L276 IsEmpty]: Start isEmpty. Operand 6992 states and 20667 transitions. [2021-11-19 13:43:12,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:12,137 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:12,137 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:12,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-19 13:43:12,138 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:12,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:12,139 INFO L85 PathProgramCache]: Analyzing trace with hash 1850010346, now seen corresponding path program 24 times [2021-11-19 13:43:12,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:12,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955012310] [2021-11-19 13:43:12,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:12,140 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:12,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:12,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:12,328 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:12,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955012310] [2021-11-19 13:43:12,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955012310] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:12,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:12,330 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:43:12,330 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [333927214] [2021-11-19 13:43:12,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:12,334 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:43:12,334 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:12,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:43:12,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:12,335 INFO L87 Difference]: Start difference. First operand 6992 states and 20667 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:12,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:12,618 INFO L93 Difference]: Finished difference Result 8382 states and 24933 transitions. [2021-11-19 13:43:12,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:12,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:12,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:12,648 INFO L225 Difference]: With dead ends: 8382 [2021-11-19 13:43:12,649 INFO L226 Difference]: Without dead ends: 8382 [2021-11-19 13:43:12,649 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:12,651 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 52 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:12,651 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 52 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 294 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8382 states. [2021-11-19 13:43:12,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8382 to 7262. [2021-11-19 13:43:12,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7262 states, 7261 states have (on average 2.9681862002479) internal successors, (21552), 7261 states have internal predecessors, (21552), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:12,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7262 states to 7262 states and 21552 transitions. [2021-11-19 13:43:12,888 INFO L78 Accepts]: Start accepts. Automaton has 7262 states and 21552 transitions. Word has length 43 [2021-11-19 13:43:12,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:12,888 INFO L470 AbstractCegarLoop]: Abstraction has 7262 states and 21552 transitions. [2021-11-19 13:43:12,889 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:12,889 INFO L276 IsEmpty]: Start isEmpty. Operand 7262 states and 21552 transitions. [2021-11-19 13:43:12,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:12,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:12,914 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:12,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-19 13:43:12,915 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:12,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:12,916 INFO L85 PathProgramCache]: Analyzing trace with hash 527078564, now seen corresponding path program 25 times [2021-11-19 13:43:12,916 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:12,916 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753655287] [2021-11-19 13:43:12,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:12,917 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:12,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:13,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:13,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:13,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753655287] [2021-11-19 13:43:13,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753655287] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:13,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:13,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:13,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497312065] [2021-11-19 13:43:13,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:13,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:13,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:13,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:13,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:13,162 INFO L87 Difference]: Start difference. First operand 7262 states and 21552 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:13,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:13,553 INFO L93 Difference]: Finished difference Result 8340 states and 24561 transitions. [2021-11-19 13:43:13,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:13,554 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:13,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:13,572 INFO L225 Difference]: With dead ends: 8340 [2021-11-19 13:43:13,573 INFO L226 Difference]: Without dead ends: 7990 [2021-11-19 13:43:13,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:13,574 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 47 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 451 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:13,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 72 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 451 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:13,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7990 states. [2021-11-19 13:43:13,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7990 to 7350. [2021-11-19 13:43:13,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7350 states, 7349 states have (on average 2.965029255681045) internal successors, (21790), 7349 states have internal predecessors, (21790), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:13,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7350 states to 7350 states and 21790 transitions. [2021-11-19 13:43:13,799 INFO L78 Accepts]: Start accepts. Automaton has 7350 states and 21790 transitions. Word has length 43 [2021-11-19 13:43:13,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:13,799 INFO L470 AbstractCegarLoop]: Abstraction has 7350 states and 21790 transitions. [2021-11-19 13:43:13,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:13,800 INFO L276 IsEmpty]: Start isEmpty. Operand 7350 states and 21790 transitions. [2021-11-19 13:43:13,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:13,822 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:13,822 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:13,822 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-19 13:43:13,823 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:13,823 INFO L85 PathProgramCache]: Analyzing trace with hash 948698318, now seen corresponding path program 26 times [2021-11-19 13:43:13,824 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:13,824 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118723597] [2021-11-19 13:43:13,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:13,824 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:13,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:14,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:14,033 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:14,033 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118723597] [2021-11-19 13:43:14,033 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118723597] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:14,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:14,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:14,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888355429] [2021-11-19 13:43:14,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:14,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:14,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:14,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:14,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:14,037 INFO L87 Difference]: Start difference. First operand 7350 states and 21790 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:14,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:14,296 INFO L93 Difference]: Finished difference Result 7626 states and 22540 transitions. [2021-11-19 13:43:14,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:14,297 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:14,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:14,315 INFO L225 Difference]: With dead ends: 7626 [2021-11-19 13:43:14,315 INFO L226 Difference]: Without dead ends: 7576 [2021-11-19 13:43:14,316 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:14,316 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:14,317 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 46 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:14,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7576 states. [2021-11-19 13:43:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7576 to 7378. [2021-11-19 13:43:14,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7378 states, 7377 states have (on average 2.965161989968822) internal successors, (21874), 7377 states have internal predecessors, (21874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:14,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7378 states to 7378 states and 21874 transitions. [2021-11-19 13:43:14,498 INFO L78 Accepts]: Start accepts. Automaton has 7378 states and 21874 transitions. Word has length 43 [2021-11-19 13:43:14,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:14,499 INFO L470 AbstractCegarLoop]: Abstraction has 7378 states and 21874 transitions. [2021-11-19 13:43:14,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:14,499 INFO L276 IsEmpty]: Start isEmpty. Operand 7378 states and 21874 transitions. [2021-11-19 13:43:14,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:14,521 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:14,521 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:14,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-19 13:43:14,522 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:14,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:14,523 INFO L85 PathProgramCache]: Analyzing trace with hash -2052186554, now seen corresponding path program 27 times [2021-11-19 13:43:14,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:14,523 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806902311] [2021-11-19 13:43:14,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:14,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:14,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:14,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:14,578 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:14,578 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806902311] [2021-11-19 13:43:14,579 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806902311] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:14,579 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:14,579 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-19 13:43:14,579 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801633175] [2021-11-19 13:43:14,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:14,580 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 13:43:14,580 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:14,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 13:43:14,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:43:14,581 INFO L87 Difference]: Start difference. First operand 7378 states and 21874 transitions. Second operand has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:14,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:14,707 INFO L93 Difference]: Finished difference Result 7060 states and 20645 transitions. [2021-11-19 13:43:14,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 13:43:14,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:14,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:14,729 INFO L225 Difference]: With dead ends: 7060 [2021-11-19 13:43:14,730 INFO L226 Difference]: Without dead ends: 7060 [2021-11-19 13:43:14,730 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 13:43:14,731 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 16 mSDsluCounter, 37 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:14,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 16 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:43:14,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7060 states. [2021-11-19 13:43:14,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7060 to 7060. [2021-11-19 13:43:14,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7060 states, 7059 states have (on average 2.924635217452897) internal successors, (20645), 7059 states have internal predecessors, (20645), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7060 states to 7060 states and 20645 transitions. [2021-11-19 13:43:14,907 INFO L78 Accepts]: Start accepts. Automaton has 7060 states and 20645 transitions. Word has length 43 [2021-11-19 13:43:14,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:14,907 INFO L470 AbstractCegarLoop]: Abstraction has 7060 states and 20645 transitions. [2021-11-19 13:43:14,907 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.333333333333334) internal successors, (43), 3 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:14,907 INFO L276 IsEmpty]: Start isEmpty. Operand 7060 states and 20645 transitions. [2021-11-19 13:43:14,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:14,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:14,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:14,922 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-19 13:43:14,922 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:14,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:14,923 INFO L85 PathProgramCache]: Analyzing trace with hash -588746304, now seen corresponding path program 28 times [2021-11-19 13:43:14,923 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:14,923 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366972021] [2021-11-19 13:43:14,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:14,924 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:14,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:15,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:15,158 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:15,158 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366972021] [2021-11-19 13:43:15,159 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366972021] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:15,159 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:15,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:15,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [37943297] [2021-11-19 13:43:15,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:15,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:15,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:15,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:15,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:15,161 INFO L87 Difference]: Start difference. First operand 7060 states and 20645 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:15,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:15,580 INFO L93 Difference]: Finished difference Result 7938 states and 23024 transitions. [2021-11-19 13:43:15,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:15,581 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:15,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:15,595 INFO L225 Difference]: With dead ends: 7938 [2021-11-19 13:43:15,595 INFO L226 Difference]: Without dead ends: 7824 [2021-11-19 13:43:15,596 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:15,599 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 72 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 104 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:15,600 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 104 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:15,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7824 states. [2021-11-19 13:43:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7824 to 6864. [2021-11-19 13:43:15,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6864 states, 6863 states have (on average 2.9237942590703776) internal successors, (20066), 6863 states have internal predecessors, (20066), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:15,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6864 states to 6864 states and 20066 transitions. [2021-11-19 13:43:15,736 INFO L78 Accepts]: Start accepts. Automaton has 6864 states and 20066 transitions. Word has length 43 [2021-11-19 13:43:15,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:15,736 INFO L470 AbstractCegarLoop]: Abstraction has 6864 states and 20066 transitions. [2021-11-19 13:43:15,736 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:15,736 INFO L276 IsEmpty]: Start isEmpty. Operand 6864 states and 20066 transitions. [2021-11-19 13:43:15,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:15,751 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:15,752 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:15,752 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-19 13:43:15,752 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:15,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:15,753 INFO L85 PathProgramCache]: Analyzing trace with hash -375964436, now seen corresponding path program 29 times [2021-11-19 13:43:15,753 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:15,753 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821472601] [2021-11-19 13:43:15,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:15,754 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:15,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:15,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:15,868 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:15,869 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821472601] [2021-11-19 13:43:15,869 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821472601] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:15,869 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:15,869 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:15,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583557574] [2021-11-19 13:43:15,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:15,870 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:15,870 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:15,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:15,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:15,871 INFO L87 Difference]: Start difference. First operand 6864 states and 20066 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:16,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:16,454 INFO L93 Difference]: Finished difference Result 7827 states and 22437 transitions. [2021-11-19 13:43:16,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:16,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:16,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:16,467 INFO L225 Difference]: With dead ends: 7827 [2021-11-19 13:43:16,467 INFO L226 Difference]: Without dead ends: 7290 [2021-11-19 13:43:16,467 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:43:16,468 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 192 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 877 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:16,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 14 Invalid, 877 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:16,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7290 states. [2021-11-19 13:43:16,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7290 to 6572. [2021-11-19 13:43:16,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6572 states, 6571 states have (on average 2.919799117333739) internal successors, (19186), 6571 states have internal predecessors, (19186), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:16,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6572 states to 6572 states and 19186 transitions. [2021-11-19 13:43:16,591 INFO L78 Accepts]: Start accepts. Automaton has 6572 states and 19186 transitions. Word has length 43 [2021-11-19 13:43:16,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:16,591 INFO L470 AbstractCegarLoop]: Abstraction has 6572 states and 19186 transitions. [2021-11-19 13:43:16,591 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:16,592 INFO L276 IsEmpty]: Start isEmpty. Operand 6572 states and 19186 transitions. [2021-11-19 13:43:16,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:16,602 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:16,602 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:16,602 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-19 13:43:16,602 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:16,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:16,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1822360024, now seen corresponding path program 30 times [2021-11-19 13:43:16,603 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:16,603 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060349749] [2021-11-19 13:43:16,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:16,603 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:16,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:16,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:16,729 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:16,729 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060349749] [2021-11-19 13:43:16,729 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060349749] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:16,729 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:16,729 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:16,730 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775589320] [2021-11-19 13:43:16,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:16,730 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:16,730 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:16,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:16,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:16,731 INFO L87 Difference]: Start difference. First operand 6572 states and 19186 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:17,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:17,056 INFO L93 Difference]: Finished difference Result 8244 states and 24059 transitions. [2021-11-19 13:43:17,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:17,057 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:17,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:17,077 INFO L225 Difference]: With dead ends: 8244 [2021-11-19 13:43:17,077 INFO L226 Difference]: Without dead ends: 7642 [2021-11-19 13:43:17,078 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:17,078 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 57 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:17,078 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 68 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:17,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7642 states. [2021-11-19 13:43:17,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7642 to 6796. [2021-11-19 13:43:17,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6796 states, 6795 states have (on average 2.9159676232523917) internal successors, (19814), 6795 states have internal predecessors, (19814), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6796 states to 6796 states and 19814 transitions. [2021-11-19 13:43:17,249 INFO L78 Accepts]: Start accepts. Automaton has 6796 states and 19814 transitions. Word has length 43 [2021-11-19 13:43:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:17,250 INFO L470 AbstractCegarLoop]: Abstraction has 6796 states and 19814 transitions. [2021-11-19 13:43:17,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 6796 states and 19814 transitions. [2021-11-19 13:43:17,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:17,266 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:17,266 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:17,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-19 13:43:17,267 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:17,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:17,268 INFO L85 PathProgramCache]: Analyzing trace with hash 2049705926, now seen corresponding path program 31 times [2021-11-19 13:43:17,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:17,268 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458735819] [2021-11-19 13:43:17,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:17,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:17,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:17,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:17,411 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:17,411 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458735819] [2021-11-19 13:43:17,411 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458735819] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:17,411 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:17,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:17,412 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837227546] [2021-11-19 13:43:17,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:17,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:17,413 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:17,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:17,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:17,414 INFO L87 Difference]: Start difference. First operand 6796 states and 19814 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:17,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:17,766 INFO L93 Difference]: Finished difference Result 7134 states and 20689 transitions. [2021-11-19 13:43:17,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:17,767 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:17,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:17,787 INFO L225 Difference]: With dead ends: 7134 [2021-11-19 13:43:17,787 INFO L226 Difference]: Without dead ends: 7086 [2021-11-19 13:43:17,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:17,790 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:17,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 74 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:17,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7086 states. [2021-11-19 13:43:17,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7086 to 6886. [2021-11-19 13:43:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6886 states, 6885 states have (on average 2.9105301379811186) internal successors, (20039), 6885 states have internal predecessors, (20039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:17,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6886 states to 6886 states and 20039 transitions. [2021-11-19 13:43:17,979 INFO L78 Accepts]: Start accepts. Automaton has 6886 states and 20039 transitions. Word has length 43 [2021-11-19 13:43:17,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:17,979 INFO L470 AbstractCegarLoop]: Abstraction has 6886 states and 20039 transitions. [2021-11-19 13:43:17,979 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:17,980 INFO L276 IsEmpty]: Start isEmpty. Operand 6886 states and 20039 transitions. [2021-11-19 13:43:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:17,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:17,996 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:17,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-19 13:43:17,997 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:17,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:17,998 INFO L85 PathProgramCache]: Analyzing trace with hash 1541314406, now seen corresponding path program 32 times [2021-11-19 13:43:17,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:17,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1140031911] [2021-11-19 13:43:17,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:17,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:18,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:18,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:18,159 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:18,159 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1140031911] [2021-11-19 13:43:18,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1140031911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:18,160 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:18,160 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:18,160 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408928696] [2021-11-19 13:43:18,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:18,161 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:18,161 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:18,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:18,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:18,162 INFO L87 Difference]: Start difference. First operand 6886 states and 20039 transitions. Second operand has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:18,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:18,826 INFO L93 Difference]: Finished difference Result 7593 states and 21730 transitions. [2021-11-19 13:43:18,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:18,827 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:18,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:18,842 INFO L225 Difference]: With dead ends: 7593 [2021-11-19 13:43:18,843 INFO L226 Difference]: Without dead ends: 7286 [2021-11-19 13:43:18,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:43:18,843 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 197 mSDsluCounter, 646 mSDsCounter, 0 mSdLazyCounter, 892 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 892 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:18,844 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [197 Valid, 15 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 892 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:18,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7286 states. [2021-11-19 13:43:18,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7286 to 6826. [2021-11-19 13:43:19,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6826 states, 6825 states have (on average 2.9076923076923076) internal successors, (19845), 6825 states have internal predecessors, (19845), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:19,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6826 states to 6826 states and 19845 transitions. [2021-11-19 13:43:19,026 INFO L78 Accepts]: Start accepts. Automaton has 6826 states and 19845 transitions. Word has length 43 [2021-11-19 13:43:19,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:19,027 INFO L470 AbstractCegarLoop]: Abstraction has 6826 states and 19845 transitions. [2021-11-19 13:43:19,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.375) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:19,027 INFO L276 IsEmpty]: Start isEmpty. Operand 6826 states and 19845 transitions. [2021-11-19 13:43:19,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:19,038 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:19,038 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:19,038 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-19 13:43:19,039 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:19,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:19,039 INFO L85 PathProgramCache]: Analyzing trace with hash -1281034276, now seen corresponding path program 33 times [2021-11-19 13:43:19,040 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:19,040 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138075543] [2021-11-19 13:43:19,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:19,040 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:19,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:19,253 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:19,253 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:19,253 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138075543] [2021-11-19 13:43:19,254 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138075543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:19,254 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:19,254 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:19,254 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110824768] [2021-11-19 13:43:19,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:19,256 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:19,256 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:19,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:19,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:19,257 INFO L87 Difference]: Start difference. First operand 6826 states and 19845 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:19,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:19,651 INFO L93 Difference]: Finished difference Result 7326 states and 21191 transitions. [2021-11-19 13:43:19,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:19,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:19,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:19,666 INFO L225 Difference]: With dead ends: 7326 [2021-11-19 13:43:19,666 INFO L226 Difference]: Without dead ends: 7104 [2021-11-19 13:43:19,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:19,668 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 74 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:19,668 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [74 Valid, 80 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:19,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7104 states. [2021-11-19 13:43:19,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7104 to 6846. [2021-11-19 13:43:19,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6846 states, 6845 states have (on average 2.9070854638422206) internal successors, (19899), 6845 states have internal predecessors, (19899), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:19,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6846 states to 6846 states and 19899 transitions. [2021-11-19 13:43:19,832 INFO L78 Accepts]: Start accepts. Automaton has 6846 states and 19899 transitions. Word has length 43 [2021-11-19 13:43:19,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:19,832 INFO L470 AbstractCegarLoop]: Abstraction has 6846 states and 19899 transitions. [2021-11-19 13:43:19,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:19,833 INFO L276 IsEmpty]: Start isEmpty. Operand 6846 states and 19899 transitions. [2021-11-19 13:43:19,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:19,844 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:19,844 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:19,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-19 13:43:19,844 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:19,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:19,845 INFO L85 PathProgramCache]: Analyzing trace with hash 1323071020, now seen corresponding path program 34 times [2021-11-19 13:43:19,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:19,845 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1709204334] [2021-11-19 13:43:19,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:19,846 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:19,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:20,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:20,034 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:20,034 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1709204334] [2021-11-19 13:43:20,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1709204334] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:20,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:20,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:43:20,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754196171] [2021-11-19 13:43:20,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:20,036 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:43:20,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:20,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:43:20,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:20,037 INFO L87 Difference]: Start difference. First operand 6846 states and 19899 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:20,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:20,277 INFO L93 Difference]: Finished difference Result 7532 states and 21836 transitions. [2021-11-19 13:43:20,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:43:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:20,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:20,299 INFO L225 Difference]: With dead ends: 7532 [2021-11-19 13:43:20,299 INFO L226 Difference]: Without dead ends: 7372 [2021-11-19 13:43:20,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:20,300 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:20,300 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 36 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:20,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7372 states. [2021-11-19 13:43:20,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7372 to 6746. [2021-11-19 13:43:20,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6746 states, 6745 states have (on average 2.9083765752409194) internal successors, (19617), 6745 states have internal predecessors, (19617), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6746 states to 6746 states and 19617 transitions. [2021-11-19 13:43:20,486 INFO L78 Accepts]: Start accepts. Automaton has 6746 states and 19617 transitions. Word has length 43 [2021-11-19 13:43:20,486 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:20,487 INFO L470 AbstractCegarLoop]: Abstraction has 6746 states and 19617 transitions. [2021-11-19 13:43:20,487 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 6746 states and 19617 transitions. [2021-11-19 13:43:20,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:20,504 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:20,504 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:20,504 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-19 13:43:20,504 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:20,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:20,505 INFO L85 PathProgramCache]: Analyzing trace with hash 468834788, now seen corresponding path program 35 times [2021-11-19 13:43:20,505 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:20,505 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1131092041] [2021-11-19 13:43:20,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:20,506 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:20,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:20,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:20,817 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:20,817 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1131092041] [2021-11-19 13:43:20,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1131092041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:20,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:20,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:20,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843620813] [2021-11-19 13:43:20,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:20,818 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:20,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:20,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:20,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:20,819 INFO L87 Difference]: Start difference. First operand 6746 states and 19617 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:21,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:21,544 INFO L93 Difference]: Finished difference Result 8128 states and 23432 transitions. [2021-11-19 13:43:21,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:43:21,545 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:21,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:21,567 INFO L225 Difference]: With dead ends: 8128 [2021-11-19 13:43:21,568 INFO L226 Difference]: Without dead ends: 7606 [2021-11-19 13:43:21,568 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:43:21,569 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 161 mSDsluCounter, 478 mSDsCounter, 0 mSdLazyCounter, 831 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 831 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:21,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [161 Valid, 128 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 831 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:43:21,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7606 states. [2021-11-19 13:43:21,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7606 to 6386. [2021-11-19 13:43:21,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6386 states, 6385 states have (on average 2.8944400939702426) internal successors, (18481), 6385 states have internal predecessors, (18481), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:21,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6386 states to 6386 states and 18481 transitions. [2021-11-19 13:43:21,729 INFO L78 Accepts]: Start accepts. Automaton has 6386 states and 18481 transitions. Word has length 43 [2021-11-19 13:43:21,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:21,730 INFO L470 AbstractCegarLoop]: Abstraction has 6386 states and 18481 transitions. [2021-11-19 13:43:21,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:21,730 INFO L276 IsEmpty]: Start isEmpty. Operand 6386 states and 18481 transitions. [2021-11-19 13:43:21,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:21,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:21,740 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:21,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-19 13:43:21,740 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:21,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:21,741 INFO L85 PathProgramCache]: Analyzing trace with hash 676617994, now seen corresponding path program 36 times [2021-11-19 13:43:21,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:21,741 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [29735041] [2021-11-19 13:43:21,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:21,742 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:21,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:21,934 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:21,934 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:21,934 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [29735041] [2021-11-19 13:43:21,935 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [29735041] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:21,935 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:21,935 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:21,935 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425121554] [2021-11-19 13:43:21,935 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:21,936 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:21,936 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:21,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:21,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:21,938 INFO L87 Difference]: Start difference. First operand 6386 states and 18481 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:22,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:22,258 INFO L93 Difference]: Finished difference Result 8128 states and 23663 transitions. [2021-11-19 13:43:22,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:22,259 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:22,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:22,275 INFO L225 Difference]: With dead ends: 8128 [2021-11-19 13:43:22,275 INFO L226 Difference]: Without dead ends: 7844 [2021-11-19 13:43:22,276 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:22,276 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:22,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 80 Invalid, 478 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:22,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7844 states. [2021-11-19 13:43:22,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7844 to 6456. [2021-11-19 13:43:22,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6456 states, 6455 states have (on average 2.899457784663052) internal successors, (18716), 6455 states have internal predecessors, (18716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6456 states to 6456 states and 18716 transitions. [2021-11-19 13:43:22,489 INFO L78 Accepts]: Start accepts. Automaton has 6456 states and 18716 transitions. Word has length 43 [2021-11-19 13:43:22,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:22,489 INFO L470 AbstractCegarLoop]: Abstraction has 6456 states and 18716 transitions. [2021-11-19 13:43:22,490 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 6456 states and 18716 transitions. [2021-11-19 13:43:22,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:22,500 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:22,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:22,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-19 13:43:22,501 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:22,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:22,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1936413144, now seen corresponding path program 37 times [2021-11-19 13:43:22,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:22,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508962588] [2021-11-19 13:43:22,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:22,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:22,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:22,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:22,687 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:22,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508962588] [2021-11-19 13:43:22,688 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508962588] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:22,688 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:22,688 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:22,688 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479540488] [2021-11-19 13:43:22,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:22,689 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:22,689 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:22,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:22,690 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:22,690 INFO L87 Difference]: Start difference. First operand 6456 states and 18716 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:23,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:23,051 INFO L93 Difference]: Finished difference Result 8840 states and 25893 transitions. [2021-11-19 13:43:23,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:23,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:23,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:23,069 INFO L225 Difference]: With dead ends: 8840 [2021-11-19 13:43:23,069 INFO L226 Difference]: Without dead ends: 8456 [2021-11-19 13:43:23,069 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:23,074 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 52 mSDsluCounter, 265 mSDsCounter, 0 mSdLazyCounter, 531 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 531 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:23,075 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 90 Invalid, 543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 531 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:23,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8456 states. [2021-11-19 13:43:23,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8456 to 6742. [2021-11-19 13:43:23,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6742 states, 6741 states have (on average 2.906097018246551) internal successors, (19590), 6741 states have internal predecessors, (19590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:23,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6742 states to 6742 states and 19590 transitions. [2021-11-19 13:43:23,219 INFO L78 Accepts]: Start accepts. Automaton has 6742 states and 19590 transitions. Word has length 43 [2021-11-19 13:43:23,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:23,219 INFO L470 AbstractCegarLoop]: Abstraction has 6742 states and 19590 transitions. [2021-11-19 13:43:23,219 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:23,220 INFO L276 IsEmpty]: Start isEmpty. Operand 6742 states and 19590 transitions. [2021-11-19 13:43:23,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:23,231 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:23,231 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:23,231 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-19 13:43:23,232 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:23,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:23,232 INFO L85 PathProgramCache]: Analyzing trace with hash 48149436, now seen corresponding path program 38 times [2021-11-19 13:43:23,232 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:23,233 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488851116] [2021-11-19 13:43:23,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:23,233 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:23,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:23,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:23,395 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:23,395 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488851116] [2021-11-19 13:43:23,396 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488851116] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:23,396 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:23,396 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:23,396 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228879178] [2021-11-19 13:43:23,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:23,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:23,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:23,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:23,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:23,400 INFO L87 Difference]: Start difference. First operand 6742 states and 19590 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:23,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:23,858 INFO L93 Difference]: Finished difference Result 8202 states and 23889 transitions. [2021-11-19 13:43:23,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:23,858 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:23,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:23,882 INFO L225 Difference]: With dead ends: 8202 [2021-11-19 13:43:23,882 INFO L226 Difference]: Without dead ends: 7886 [2021-11-19 13:43:23,882 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:23,883 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 103 mSDsluCounter, 268 mSDsCounter, 0 mSdLazyCounter, 514 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:23,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [103 Valid, 82 Invalid, 545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 514 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:23,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7886 states. [2021-11-19 13:43:24,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7886 to 6666. [2021-11-19 13:43:24,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6666 states, 6665 states have (on average 2.905026256564141) internal successors, (19362), 6665 states have internal predecessors, (19362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:24,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6666 states to 6666 states and 19362 transitions. [2021-11-19 13:43:24,079 INFO L78 Accepts]: Start accepts. Automaton has 6666 states and 19362 transitions. Word has length 43 [2021-11-19 13:43:24,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:24,079 INFO L470 AbstractCegarLoop]: Abstraction has 6666 states and 19362 transitions. [2021-11-19 13:43:24,080 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:24,080 INFO L276 IsEmpty]: Start isEmpty. Operand 6666 states and 19362 transitions. [2021-11-19 13:43:24,095 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:24,095 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:24,095 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:24,096 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-19 13:43:24,096 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:24,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:24,097 INFO L85 PathProgramCache]: Analyzing trace with hash 418113764, now seen corresponding path program 39 times [2021-11-19 13:43:24,097 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:24,097 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778119542] [2021-11-19 13:43:24,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:24,097 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:24,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:24,266 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:24,266 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778119542] [2021-11-19 13:43:24,266 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778119542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:24,266 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:24,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:24,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076283757] [2021-11-19 13:43:24,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:24,267 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:24,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:24,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:24,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:24,268 INFO L87 Difference]: Start difference. First operand 6666 states and 19362 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:24,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:24,558 INFO L93 Difference]: Finished difference Result 7126 states and 20539 transitions. [2021-11-19 13:43:24,558 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:24,558 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:24,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:24,573 INFO L225 Difference]: With dead ends: 7126 [2021-11-19 13:43:24,573 INFO L226 Difference]: Without dead ends: 6930 [2021-11-19 13:43:24,573 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:24,574 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 56 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 60 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:24,574 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 60 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:24,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6930 states. [2021-11-19 13:43:24,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6930 to 6530. [2021-11-19 13:43:24,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6530 states, 6529 states have (on average 2.8937050084239546) internal successors, (18893), 6529 states have internal predecessors, (18893), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:24,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6530 states to 6530 states and 18893 transitions. [2021-11-19 13:43:24,703 INFO L78 Accepts]: Start accepts. Automaton has 6530 states and 18893 transitions. Word has length 43 [2021-11-19 13:43:24,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:24,703 INFO L470 AbstractCegarLoop]: Abstraction has 6530 states and 18893 transitions. [2021-11-19 13:43:24,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:24,704 INFO L276 IsEmpty]: Start isEmpty. Operand 6530 states and 18893 transitions. [2021-11-19 13:43:24,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:24,714 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:24,714 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:24,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-19 13:43:24,714 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:24,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:24,715 INFO L85 PathProgramCache]: Analyzing trace with hash 809690818, now seen corresponding path program 40 times [2021-11-19 13:43:24,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:24,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1755484126] [2021-11-19 13:43:24,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:24,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:24,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:24,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:24,887 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:24,887 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1755484126] [2021-11-19 13:43:24,887 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1755484126] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:24,888 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:24,888 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:24,888 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818491326] [2021-11-19 13:43:24,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:24,888 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:24,889 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:24,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:24,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:24,890 INFO L87 Difference]: Start difference. First operand 6530 states and 18893 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:25,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:25,226 INFO L93 Difference]: Finished difference Result 6972 states and 20029 transitions. [2021-11-19 13:43:25,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:25,226 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:25,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:25,241 INFO L225 Difference]: With dead ends: 6972 [2021-11-19 13:43:25,241 INFO L226 Difference]: Without dead ends: 6852 [2021-11-19 13:43:25,241 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:25,242 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 52 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 499 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 499 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:25,242 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 82 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 499 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:25,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6852 states. [2021-11-19 13:43:25,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6852 to 6534. [2021-11-19 13:43:25,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6534 states, 6533 states have (on average 2.8931578141741925) internal successors, (18901), 6533 states have internal predecessors, (18901), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:25,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6534 states to 6534 states and 18901 transitions. [2021-11-19 13:43:25,372 INFO L78 Accepts]: Start accepts. Automaton has 6534 states and 18901 transitions. Word has length 43 [2021-11-19 13:43:25,372 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:25,372 INFO L470 AbstractCegarLoop]: Abstraction has 6534 states and 18901 transitions. [2021-11-19 13:43:25,372 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:25,372 INFO L276 IsEmpty]: Start isEmpty. Operand 6534 states and 18901 transitions. [2021-11-19 13:43:25,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:25,386 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:25,386 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:25,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-19 13:43:25,386 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:25,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:25,387 INFO L85 PathProgramCache]: Analyzing trace with hash -1085777884, now seen corresponding path program 41 times [2021-11-19 13:43:25,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:25,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190361436] [2021-11-19 13:43:25,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:25,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:25,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:25,521 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:25,521 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190361436] [2021-11-19 13:43:25,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190361436] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:25,522 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:25,522 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-19 13:43:25,522 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864216389] [2021-11-19 13:43:25,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:25,523 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 13:43:25,523 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:25,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 13:43:25,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:43:25,524 INFO L87 Difference]: Start difference. First operand 6534 states and 18901 transitions. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:25,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:25,722 INFO L93 Difference]: Finished difference Result 6224 states and 17349 transitions. [2021-11-19 13:43:25,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 13:43:25,723 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:25,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:25,738 INFO L225 Difference]: With dead ends: 6224 [2021-11-19 13:43:25,739 INFO L226 Difference]: Without dead ends: 5980 [2021-11-19 13:43:25,739 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 13:43:25,740 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 32 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:25,740 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [32 Valid, 28 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:25,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5980 states. [2021-11-19 13:43:25,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5980 to 5528. [2021-11-19 13:43:25,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 5527 states have (on average 2.799529582051746) internal successors, (15473), 5527 states have internal predecessors, (15473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:25,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 15473 transitions. [2021-11-19 13:43:25,878 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 15473 transitions. Word has length 43 [2021-11-19 13:43:25,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:25,878 INFO L470 AbstractCegarLoop]: Abstraction has 5528 states and 15473 transitions. [2021-11-19 13:43:25,878 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 4 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:25,878 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 15473 transitions. [2021-11-19 13:43:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:25,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:25,886 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:25,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-19 13:43:25,887 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:25,887 INFO L85 PathProgramCache]: Analyzing trace with hash -465378538, now seen corresponding path program 42 times [2021-11-19 13:43:25,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:25,887 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145095223] [2021-11-19 13:43:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:25,887 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:26,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:26,091 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:26,091 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145095223] [2021-11-19 13:43:26,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145095223] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:26,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:26,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:26,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114343388] [2021-11-19 13:43:26,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:26,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:26,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:26,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:26,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:26,094 INFO L87 Difference]: Start difference. First operand 5528 states and 15473 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:26,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:26,469 INFO L93 Difference]: Finished difference Result 6714 states and 18646 transitions. [2021-11-19 13:43:26,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:26,469 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:26,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:26,488 INFO L225 Difference]: With dead ends: 6714 [2021-11-19 13:43:26,488 INFO L226 Difference]: Without dead ends: 6378 [2021-11-19 13:43:26,489 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:26,489 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 73 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 414 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 414 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:26,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [73 Valid, 57 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 414 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:26,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6378 states. [2021-11-19 13:43:26,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6378 to 5532. [2021-11-19 13:43:26,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5532 states, 5531 states have (on average 2.7985897667691195) internal successors, (15479), 5531 states have internal predecessors, (15479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:26,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5532 states to 5532 states and 15479 transitions. [2021-11-19 13:43:26,645 INFO L78 Accepts]: Start accepts. Automaton has 5532 states and 15479 transitions. Word has length 43 [2021-11-19 13:43:26,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:26,646 INFO L470 AbstractCegarLoop]: Abstraction has 5532 states and 15479 transitions. [2021-11-19 13:43:26,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:26,646 INFO L276 IsEmpty]: Start isEmpty. Operand 5532 states and 15479 transitions. [2021-11-19 13:43:26,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:26,658 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:26,658 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:26,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-19 13:43:26,659 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:26,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:26,659 INFO L85 PathProgramCache]: Analyzing trace with hash 598063720, now seen corresponding path program 43 times [2021-11-19 13:43:26,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:26,660 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023145117] [2021-11-19 13:43:26,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:26,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:26,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:26,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:26,846 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:26,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023145117] [2021-11-19 13:43:26,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023145117] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:26,848 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:26,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:26,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84384722] [2021-11-19 13:43:26,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:26,851 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:26,851 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:26,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:26,852 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:26,853 INFO L87 Difference]: Start difference. First operand 5532 states and 15479 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:27,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:27,254 INFO L93 Difference]: Finished difference Result 6178 states and 17173 transitions. [2021-11-19 13:43:27,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:27,255 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:27,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:27,269 INFO L225 Difference]: With dead ends: 6178 [2021-11-19 13:43:27,270 INFO L226 Difference]: Without dead ends: 5560 [2021-11-19 13:43:27,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:27,280 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 49 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 478 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 490 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:27,284 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 67 Invalid, 490 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 478 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:27,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5560 states. [2021-11-19 13:43:27,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5560 to 5534. [2021-11-19 13:43:27,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5534 states, 5533 states have (on average 2.7954093620097598) internal successors, (15467), 5533 states have internal predecessors, (15467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:27,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5534 states to 5534 states and 15467 transitions. [2021-11-19 13:43:27,427 INFO L78 Accepts]: Start accepts. Automaton has 5534 states and 15467 transitions. Word has length 43 [2021-11-19 13:43:27,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:27,429 INFO L470 AbstractCegarLoop]: Abstraction has 5534 states and 15467 transitions. [2021-11-19 13:43:27,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:27,430 INFO L276 IsEmpty]: Start isEmpty. Operand 5534 states and 15467 transitions. [2021-11-19 13:43:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:27,441 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:27,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:27,442 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-19 13:43:27,443 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:27,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:27,443 INFO L85 PathProgramCache]: Analyzing trace with hash 478434638, now seen corresponding path program 44 times [2021-11-19 13:43:27,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:27,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1892287080] [2021-11-19 13:43:27,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:27,444 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:27,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:27,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:27,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:27,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1892287080] [2021-11-19 13:43:27,725 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1892287080] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:27,725 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:27,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:27,725 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [819895991] [2021-11-19 13:43:27,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:27,726 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:27,726 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:27,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:27,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:27,727 INFO L87 Difference]: Start difference. First operand 5534 states and 15467 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:28,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:28,281 INFO L93 Difference]: Finished difference Result 6944 states and 19374 transitions. [2021-11-19 13:43:28,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:28,281 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:28,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:28,295 INFO L225 Difference]: With dead ends: 6944 [2021-11-19 13:43:28,295 INFO L226 Difference]: Without dead ends: 6498 [2021-11-19 13:43:28,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:28,295 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 109 mSDsluCounter, 441 mSDsCounter, 0 mSdLazyCounter, 839 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 109 SdHoareTripleChecker+Valid, 130 SdHoareTripleChecker+Invalid, 863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 839 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:28,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [109 Valid, 130 Invalid, 863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 839 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:28,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6498 states. [2021-11-19 13:43:28,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6498 to 5530. [2021-11-19 13:43:28,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5530 states, 5529 states have (on average 2.795261349249412) internal successors, (15455), 5529 states have internal predecessors, (15455), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:28,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5530 states to 5530 states and 15455 transitions. [2021-11-19 13:43:28,445 INFO L78 Accepts]: Start accepts. Automaton has 5530 states and 15455 transitions. Word has length 43 [2021-11-19 13:43:28,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:28,446 INFO L470 AbstractCegarLoop]: Abstraction has 5530 states and 15455 transitions. [2021-11-19 13:43:28,446 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:28,446 INFO L276 IsEmpty]: Start isEmpty. Operand 5530 states and 15455 transitions. [2021-11-19 13:43:28,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:28,458 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:28,458 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:28,458 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-19 13:43:28,459 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:28,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:28,459 INFO L85 PathProgramCache]: Analyzing trace with hash 1423554662, now seen corresponding path program 45 times [2021-11-19 13:43:28,459 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:28,460 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [57175847] [2021-11-19 13:43:28,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:28,460 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:28,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:28,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:28,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:28,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [57175847] [2021-11-19 13:43:28,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [57175847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:28,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:28,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:28,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197289846] [2021-11-19 13:43:28,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:28,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:28,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:28,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:28,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:28,681 INFO L87 Difference]: Start difference. First operand 5530 states and 15455 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:29,156 INFO L93 Difference]: Finished difference Result 6808 states and 18979 transitions. [2021-11-19 13:43:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:29,158 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:29,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:29,171 INFO L225 Difference]: With dead ends: 6808 [2021-11-19 13:43:29,171 INFO L226 Difference]: Without dead ends: 6616 [2021-11-19 13:43:29,171 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:29,172 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 99 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 695 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:29,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 105 Invalid, 711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 695 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:29,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6616 states. [2021-11-19 13:43:29,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6616 to 5514. [2021-11-19 13:43:29,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5514 states, 5513 states have (on average 2.796662434246327) internal successors, (15418), 5513 states have internal predecessors, (15418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:29,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5514 states to 5514 states and 15418 transitions. [2021-11-19 13:43:29,280 INFO L78 Accepts]: Start accepts. Automaton has 5514 states and 15418 transitions. Word has length 43 [2021-11-19 13:43:29,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:29,281 INFO L470 AbstractCegarLoop]: Abstraction has 5514 states and 15418 transitions. [2021-11-19 13:43:29,281 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:29,281 INFO L276 IsEmpty]: Start isEmpty. Operand 5514 states and 15418 transitions. [2021-11-19 13:43:29,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:29,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:29,293 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:29,293 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-19 13:43:29,293 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:29,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:29,294 INFO L85 PathProgramCache]: Analyzing trace with hash 489423776, now seen corresponding path program 46 times [2021-11-19 13:43:29,294 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:29,294 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864961710] [2021-11-19 13:43:29,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:29,295 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:29,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:29,520 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:29,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864961710] [2021-11-19 13:43:29,520 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864961710] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:29,520 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:29,520 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:29,520 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729175955] [2021-11-19 13:43:29,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:29,521 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:29,521 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:29,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:29,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:29,522 INFO L87 Difference]: Start difference. First operand 5514 states and 15418 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:29,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:29,897 INFO L93 Difference]: Finished difference Result 5676 states and 15829 transitions. [2021-11-19 13:43:29,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:29,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:29,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:29,913 INFO L225 Difference]: With dead ends: 5676 [2021-11-19 13:43:29,913 INFO L226 Difference]: Without dead ends: 5514 [2021-11-19 13:43:29,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:29,914 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:29,914 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 81 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:29,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5514 states. [2021-11-19 13:43:30,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5514 to 5486. [2021-11-19 13:43:30,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5486 states, 5485 states have (on average 2.7963536918869645) internal successors, (15338), 5485 states have internal predecessors, (15338), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:30,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5486 states to 5486 states and 15338 transitions. [2021-11-19 13:43:30,057 INFO L78 Accepts]: Start accepts. Automaton has 5486 states and 15338 transitions. Word has length 43 [2021-11-19 13:43:30,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:30,058 INFO L470 AbstractCegarLoop]: Abstraction has 5486 states and 15338 transitions. [2021-11-19 13:43:30,058 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:30,058 INFO L276 IsEmpty]: Start isEmpty. Operand 5486 states and 15338 transitions. [2021-11-19 13:43:30,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:30,070 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:30,070 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:30,070 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-19 13:43:30,071 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:30,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:30,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1904091622, now seen corresponding path program 47 times [2021-11-19 13:43:30,072 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:30,072 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950699382] [2021-11-19 13:43:30,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:30,072 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:30,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:30,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:30,275 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:30,276 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950699382] [2021-11-19 13:43:30,276 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950699382] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:30,276 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:30,276 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:30,276 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958316831] [2021-11-19 13:43:30,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:30,277 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:30,277 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:30,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:30,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:30,277 INFO L87 Difference]: Start difference. First operand 5486 states and 15338 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:30,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:30,719 INFO L93 Difference]: Finished difference Result 5560 states and 15493 transitions. [2021-11-19 13:43:30,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:30,720 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:30,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:30,730 INFO L225 Difference]: With dead ends: 5560 [2021-11-19 13:43:30,730 INFO L226 Difference]: Without dead ends: 5440 [2021-11-19 13:43:30,731 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:30,731 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 310 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 615 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:30,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 93 Invalid, 615 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:30,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5440 states. [2021-11-19 13:43:30,813 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5440 to 5426. [2021-11-19 13:43:30,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5426 states, 5425 states have (on average 2.8) internal successors, (15190), 5425 states have internal predecessors, (15190), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:30,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5426 states to 5426 states and 15190 transitions. [2021-11-19 13:43:30,833 INFO L78 Accepts]: Start accepts. Automaton has 5426 states and 15190 transitions. Word has length 43 [2021-11-19 13:43:30,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:30,833 INFO L470 AbstractCegarLoop]: Abstraction has 5426 states and 15190 transitions. [2021-11-19 13:43:30,833 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:30,834 INFO L276 IsEmpty]: Start isEmpty. Operand 5426 states and 15190 transitions. [2021-11-19 13:43:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:30,841 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:30,841 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:30,842 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-19 13:43:30,842 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:30,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1573376642, now seen corresponding path program 48 times [2021-11-19 13:43:30,842 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:30,843 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [910739439] [2021-11-19 13:43:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:30,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:30,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:30,969 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:30,970 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [910739439] [2021-11-19 13:43:30,970 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [910739439] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:30,970 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:30,970 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:30,970 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942170401] [2021-11-19 13:43:30,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:30,972 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:30,972 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:30,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=32, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:30,973 INFO L87 Difference]: Start difference. First operand 5426 states and 15190 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:31,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:31,272 INFO L93 Difference]: Finished difference Result 5596 states and 15550 transitions. [2021-11-19 13:43:31,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:31,272 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:31,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:31,286 INFO L225 Difference]: With dead ends: 5596 [2021-11-19 13:43:31,286 INFO L226 Difference]: Without dead ends: 5036 [2021-11-19 13:43:31,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:31,287 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 128 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 271 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 305 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:31,289 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 56 Invalid, 305 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:31,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5036 states. [2021-11-19 13:43:31,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5036 to 4500. [2021-11-19 13:43:31,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4500 states, 4499 states have (on average 2.7743943098466324) internal successors, (12482), 4499 states have internal predecessors, (12482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:31,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4500 states to 4500 states and 12482 transitions. [2021-11-19 13:43:31,393 INFO L78 Accepts]: Start accepts. Automaton has 4500 states and 12482 transitions. Word has length 43 [2021-11-19 13:43:31,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:31,394 INFO L470 AbstractCegarLoop]: Abstraction has 4500 states and 12482 transitions. [2021-11-19 13:43:31,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:31,394 INFO L276 IsEmpty]: Start isEmpty. Operand 4500 states and 12482 transitions. [2021-11-19 13:43:31,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:31,400 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:31,400 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:31,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-19 13:43:31,401 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:31,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:31,401 INFO L85 PathProgramCache]: Analyzing trace with hash 488355084, now seen corresponding path program 49 times [2021-11-19 13:43:31,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:31,401 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [306054238] [2021-11-19 13:43:31,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:31,402 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:31,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:31,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:31,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:31,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [306054238] [2021-11-19 13:43:31,583 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [306054238] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:31,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:31,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:31,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910279284] [2021-11-19 13:43:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:31,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:31,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:31,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:31,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:31,586 INFO L87 Difference]: Start difference. First operand 4500 states and 12482 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:31,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:31,942 INFO L93 Difference]: Finished difference Result 6272 states and 17388 transitions. [2021-11-19 13:43:31,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:31,942 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:31,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:31,959 INFO L225 Difference]: With dead ends: 6272 [2021-11-19 13:43:31,959 INFO L226 Difference]: Without dead ends: 6050 [2021-11-19 13:43:31,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 4 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:31,960 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 71 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 420 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 433 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 420 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:31,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 70 Invalid, 433 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 420 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:31,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6050 states. [2021-11-19 13:43:32,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6050 to 4764. [2021-11-19 13:43:32,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4764 states, 4763 states have (on average 2.7623346630275036) internal successors, (13157), 4763 states have internal predecessors, (13157), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:32,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4764 states to 4764 states and 13157 transitions. [2021-11-19 13:43:32,099 INFO L78 Accepts]: Start accepts. Automaton has 4764 states and 13157 transitions. Word has length 43 [2021-11-19 13:43:32,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:32,100 INFO L470 AbstractCegarLoop]: Abstraction has 4764 states and 13157 transitions. [2021-11-19 13:43:32,100 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:32,100 INFO L276 IsEmpty]: Start isEmpty. Operand 4764 states and 13157 transitions. [2021-11-19 13:43:32,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:32,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:32,111 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:32,111 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-19 13:43:32,111 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:32,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:32,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1089579006, now seen corresponding path program 50 times [2021-11-19 13:43:32,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:32,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831556104] [2021-11-19 13:43:32,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:32,112 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:32,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:32,382 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:32,383 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831556104] [2021-11-19 13:43:32,383 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831556104] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:32,383 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:32,383 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:32,383 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803435136] [2021-11-19 13:43:32,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:32,384 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:32,384 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:32,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:32,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:32,385 INFO L87 Difference]: Start difference. First operand 4764 states and 13157 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:32,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:32,709 INFO L93 Difference]: Finished difference Result 4936 states and 13582 transitions. [2021-11-19 13:43:32,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:32,709 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:32,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:32,722 INFO L225 Difference]: With dead ends: 4936 [2021-11-19 13:43:32,722 INFO L226 Difference]: Without dead ends: 4714 [2021-11-19 13:43:32,723 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:32,723 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 45 mSDsluCounter, 192 mSDsCounter, 0 mSdLazyCounter, 374 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 374 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:32,724 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 54 Invalid, 383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 374 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:32,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4714 states. [2021-11-19 13:43:32,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4714 to 4674. [2021-11-19 13:43:32,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 2.7673871174834153) internal successors, (12932), 4673 states have internal predecessors, (12932), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:32,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 12932 transitions. [2021-11-19 13:43:32,839 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 12932 transitions. Word has length 43 [2021-11-19 13:43:32,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:32,839 INFO L470 AbstractCegarLoop]: Abstraction has 4674 states and 12932 transitions. [2021-11-19 13:43:32,839 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:32,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 12932 transitions. [2021-11-19 13:43:32,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:32,845 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:32,846 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:32,846 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-19 13:43:32,846 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:32,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:32,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1280634120, now seen corresponding path program 51 times [2021-11-19 13:43:32,847 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:32,847 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2062123054] [2021-11-19 13:43:32,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:32,848 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:32,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:33,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:33,029 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:33,029 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2062123054] [2021-11-19 13:43:33,029 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2062123054] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:33,030 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:33,030 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:33,030 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825540127] [2021-11-19 13:43:33,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:33,031 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:33,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:33,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:33,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:33,032 INFO L87 Difference]: Start difference. First operand 4674 states and 12932 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:33,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:33,348 INFO L93 Difference]: Finished difference Result 4770 states and 13172 transitions. [2021-11-19 13:43:33,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:33,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:33,350 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:33,362 INFO L225 Difference]: With dead ends: 4770 [2021-11-19 13:43:33,362 INFO L226 Difference]: Without dead ends: 4674 [2021-11-19 13:43:33,363 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:33,365 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 60 mSDsluCounter, 183 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:33,366 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 54 Invalid, 404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:33,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4674 states. [2021-11-19 13:43:33,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4674 to 4674. [2021-11-19 13:43:33,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4674 states, 4673 states have (on average 2.766103145730794) internal successors, (12926), 4673 states have internal predecessors, (12926), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:33,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 12926 transitions. [2021-11-19 13:43:33,483 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 12926 transitions. Word has length 43 [2021-11-19 13:43:33,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:33,484 INFO L470 AbstractCegarLoop]: Abstraction has 4674 states and 12926 transitions. [2021-11-19 13:43:33,484 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:33,485 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 12926 transitions. [2021-11-19 13:43:33,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:33,494 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:33,495 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:33,495 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-19 13:43:33,495 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:33,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:33,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1718248688, now seen corresponding path program 52 times [2021-11-19 13:43:33,496 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:33,496 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720620575] [2021-11-19 13:43:33,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:33,497 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:33,703 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:33,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720620575] [2021-11-19 13:43:33,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720620575] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:33,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:33,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:33,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936261789] [2021-11-19 13:43:33,703 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:33,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:33,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:33,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:33,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:33,705 INFO L87 Difference]: Start difference. First operand 4674 states and 12926 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:34,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:34,208 INFO L93 Difference]: Finished difference Result 4938 states and 13570 transitions. [2021-11-19 13:43:34,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:34,209 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:34,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:34,224 INFO L225 Difference]: With dead ends: 4938 [2021-11-19 13:43:34,224 INFO L226 Difference]: Without dead ends: 4694 [2021-11-19 13:43:34,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:34,227 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 72 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 572 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:34,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 70 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 572 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:34,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4694 states. [2021-11-19 13:43:34,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4694 to 4526. [2021-11-19 13:43:34,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4526 states, 4525 states have (on average 2.763756906077348) internal successors, (12506), 4525 states have internal predecessors, (12506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:34,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4526 states to 4526 states and 12506 transitions. [2021-11-19 13:43:34,318 INFO L78 Accepts]: Start accepts. Automaton has 4526 states and 12506 transitions. Word has length 43 [2021-11-19 13:43:34,318 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:34,318 INFO L470 AbstractCegarLoop]: Abstraction has 4526 states and 12506 transitions. [2021-11-19 13:43:34,318 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:34,318 INFO L276 IsEmpty]: Start isEmpty. Operand 4526 states and 12506 transitions. [2021-11-19 13:43:34,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:34,324 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:34,325 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:34,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-19 13:43:34,325 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:34,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:34,325 INFO L85 PathProgramCache]: Analyzing trace with hash 16731028, now seen corresponding path program 53 times [2021-11-19 13:43:34,325 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:34,326 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864406863] [2021-11-19 13:43:34,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:34,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:34,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:34,482 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:34,482 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864406863] [2021-11-19 13:43:34,482 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864406863] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:34,482 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:34,483 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:34,483 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900774297] [2021-11-19 13:43:34,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:34,483 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:34,484 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:34,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:34,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:34,485 INFO L87 Difference]: Start difference. First operand 4526 states and 12506 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:34,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:34,795 INFO L93 Difference]: Finished difference Result 4240 states and 11657 transitions. [2021-11-19 13:43:34,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:34,795 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:34,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:34,806 INFO L225 Difference]: With dead ends: 4240 [2021-11-19 13:43:34,806 INFO L226 Difference]: Without dead ends: 4116 [2021-11-19 13:43:34,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:34,807 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 77 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 287 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 287 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:34,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 48 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 287 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:34,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2021-11-19 13:43:34,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3986. [2021-11-19 13:43:34,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3986 states, 3985 states have (on average 2.758845671267252) internal successors, (10994), 3985 states have internal predecessors, (10994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:34,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3986 states to 3986 states and 10994 transitions. [2021-11-19 13:43:34,900 INFO L78 Accepts]: Start accepts. Automaton has 3986 states and 10994 transitions. Word has length 43 [2021-11-19 13:43:34,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:34,900 INFO L470 AbstractCegarLoop]: Abstraction has 3986 states and 10994 transitions. [2021-11-19 13:43:34,900 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:34,900 INFO L276 IsEmpty]: Start isEmpty. Operand 3986 states and 10994 transitions. [2021-11-19 13:43:34,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:34,906 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:34,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:34,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-19 13:43:34,906 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:34,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:34,907 INFO L85 PathProgramCache]: Analyzing trace with hash -778927586, now seen corresponding path program 54 times [2021-11-19 13:43:34,907 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:34,907 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716560980] [2021-11-19 13:43:34,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:34,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:35,114 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:35,114 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:35,115 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716560980] [2021-11-19 13:43:35,115 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716560980] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:35,115 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:35,115 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:35,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229434763] [2021-11-19 13:43:35,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:35,116 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:35,116 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:35,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:35,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:35,116 INFO L87 Difference]: Start difference. First operand 3986 states and 10994 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:35,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:35,528 INFO L93 Difference]: Finished difference Result 4166 states and 11427 transitions. [2021-11-19 13:43:35,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:35,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:35,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:35,538 INFO L225 Difference]: With dead ends: 4166 [2021-11-19 13:43:35,539 INFO L226 Difference]: Without dead ends: 3974 [2021-11-19 13:43:35,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:35,540 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 66 mSDsluCounter, 314 mSDsCounter, 0 mSdLazyCounter, 545 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 96 SdHoareTripleChecker+Invalid, 556 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 545 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:35,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 96 Invalid, 556 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 545 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:35,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3974 states. [2021-11-19 13:43:35,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3974 to 3902. [2021-11-19 13:43:35,623 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3902 states, 3901 states have (on average 2.755190976672648) internal successors, (10748), 3901 states have internal predecessors, (10748), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:35,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3902 states to 3902 states and 10748 transitions. [2021-11-19 13:43:35,635 INFO L78 Accepts]: Start accepts. Automaton has 3902 states and 10748 transitions. Word has length 43 [2021-11-19 13:43:35,636 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:35,636 INFO L470 AbstractCegarLoop]: Abstraction has 3902 states and 10748 transitions. [2021-11-19 13:43:35,636 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:35,636 INFO L276 IsEmpty]: Start isEmpty. Operand 3902 states and 10748 transitions. [2021-11-19 13:43:35,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:35,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:35,642 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:35,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-19 13:43:35,643 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:35,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1938105620, now seen corresponding path program 55 times [2021-11-19 13:43:35,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:35,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1193407522] [2021-11-19 13:43:35,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:35,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:35,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:35,877 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:35,877 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1193407522] [2021-11-19 13:43:35,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1193407522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:35,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:35,878 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:35,878 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213026815] [2021-11-19 13:43:35,878 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:35,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:35,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:35,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:35,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:35,879 INFO L87 Difference]: Start difference. First operand 3902 states and 10748 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:36,257 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:36,257 INFO L93 Difference]: Finished difference Result 4246 states and 11627 transitions. [2021-11-19 13:43:36,258 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:36,258 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:36,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:36,265 INFO L225 Difference]: With dead ends: 4246 [2021-11-19 13:43:36,265 INFO L226 Difference]: Without dead ends: 4012 [2021-11-19 13:43:36,266 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:36,266 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 70 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:36,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [70 Valid, 100 Invalid, 588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:36,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4012 states. [2021-11-19 13:43:36,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4012 to 3932. [2021-11-19 13:43:36,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3932 states, 3931 states have (on average 2.746629356397863) internal successors, (10797), 3931 states have internal predecessors, (10797), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:36,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3932 states to 3932 states and 10797 transitions. [2021-11-19 13:43:36,341 INFO L78 Accepts]: Start accepts. Automaton has 3932 states and 10797 transitions. Word has length 43 [2021-11-19 13:43:36,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:36,341 INFO L470 AbstractCegarLoop]: Abstraction has 3932 states and 10797 transitions. [2021-11-19 13:43:36,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:36,342 INFO L276 IsEmpty]: Start isEmpty. Operand 3932 states and 10797 transitions. [2021-11-19 13:43:36,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:36,347 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:36,347 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:36,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2021-11-19 13:43:36,348 INFO L402 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:36,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:36,348 INFO L85 PathProgramCache]: Analyzing trace with hash -770538034, now seen corresponding path program 56 times [2021-11-19 13:43:36,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:36,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84659739] [2021-11-19 13:43:36,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:36,349 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:36,527 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:36,528 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84659739] [2021-11-19 13:43:36,528 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84659739] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:36,528 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:36,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:36,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [796185734] [2021-11-19 13:43:36,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:36,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:36,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:36,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:36,529 INFO L87 Difference]: Start difference. First operand 3932 states and 10797 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:37,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:37,056 INFO L93 Difference]: Finished difference Result 4746 states and 12721 transitions. [2021-11-19 13:43:37,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:37,056 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:37,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:37,067 INFO L225 Difference]: With dead ends: 4746 [2021-11-19 13:43:37,068 INFO L226 Difference]: Without dead ends: 4260 [2021-11-19 13:43:37,068 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:37,069 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 150 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 682 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 701 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:37,069 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 118 Invalid, 701 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 682 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:37,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4260 states. [2021-11-19 13:43:37,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4260 to 3808. [2021-11-19 13:43:37,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3808 states, 3807 states have (on average 2.7383766745468874) internal successors, (10425), 3807 states have internal predecessors, (10425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:37,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 10425 transitions. [2021-11-19 13:43:37,176 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 10425 transitions. Word has length 43 [2021-11-19 13:43:37,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:37,177 INFO L470 AbstractCegarLoop]: Abstraction has 3808 states and 10425 transitions. [2021-11-19 13:43:37,177 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:37,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 10425 transitions. [2021-11-19 13:43:37,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:37,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:37,186 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:37,186 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2021-11-19 13:43:37,186 INFO L402 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:37,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:37,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1759561016, now seen corresponding path program 57 times [2021-11-19 13:43:37,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:37,187 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [733844706] [2021-11-19 13:43:37,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:37,188 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:37,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:37,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:37,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:37,446 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [733844706] [2021-11-19 13:43:37,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [733844706] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:37,446 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:37,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:37,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450924567] [2021-11-19 13:43:37,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:37,447 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:37,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:37,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:37,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:37,448 INFO L87 Difference]: Start difference. First operand 3808 states and 10425 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:37,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:37,805 INFO L93 Difference]: Finished difference Result 3974 states and 10807 transitions. [2021-11-19 13:43:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:37,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:37,813 INFO L225 Difference]: With dead ends: 3974 [2021-11-19 13:43:37,813 INFO L226 Difference]: Without dead ends: 3866 [2021-11-19 13:43:37,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:37,814 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 630 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 83 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 630 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:37,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 83 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 630 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:37,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3866 states. [2021-11-19 13:43:37,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3866 to 3808. [2021-11-19 13:43:37,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3808 states, 3807 states have (on average 2.7383766745468874) internal successors, (10425), 3807 states have internal predecessors, (10425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:37,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3808 states to 3808 states and 10425 transitions. [2021-11-19 13:43:37,883 INFO L78 Accepts]: Start accepts. Automaton has 3808 states and 10425 transitions. Word has length 43 [2021-11-19 13:43:37,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:37,883 INFO L470 AbstractCegarLoop]: Abstraction has 3808 states and 10425 transitions. [2021-11-19 13:43:37,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:37,883 INFO L276 IsEmpty]: Start isEmpty. Operand 3808 states and 10425 transitions. [2021-11-19 13:43:37,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:37,888 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:37,889 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:37,889 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2021-11-19 13:43:37,889 INFO L402 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:37,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:37,889 INFO L85 PathProgramCache]: Analyzing trace with hash -63048364, now seen corresponding path program 58 times [2021-11-19 13:43:37,889 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:37,889 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1985647228] [2021-11-19 13:43:37,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:37,890 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:37,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:38,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:38,141 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:38,141 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1985647228] [2021-11-19 13:43:38,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1985647228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:38,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:38,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:38,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667472393] [2021-11-19 13:43:38,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:38,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:38,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:38,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:38,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:38,143 INFO L87 Difference]: Start difference. First operand 3808 states and 10425 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:38,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:38,504 INFO L93 Difference]: Finished difference Result 4116 states and 11161 transitions. [2021-11-19 13:43:38,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:38,505 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:38,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:38,512 INFO L225 Difference]: With dead ends: 4116 [2021-11-19 13:43:38,512 INFO L226 Difference]: Without dead ends: 3988 [2021-11-19 13:43:38,512 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:38,514 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 67 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 569 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 569 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:38,515 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 82 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 569 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:38,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3988 states. [2021-11-19 13:43:38,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3988 to 3796. [2021-11-19 13:43:38,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3796 states, 3795 states have (on average 2.7367588932806326) internal successors, (10386), 3795 states have internal predecessors, (10386), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:38,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3796 states to 3796 states and 10386 transitions. [2021-11-19 13:43:38,588 INFO L78 Accepts]: Start accepts. Automaton has 3796 states and 10386 transitions. Word has length 43 [2021-11-19 13:43:38,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:38,589 INFO L470 AbstractCegarLoop]: Abstraction has 3796 states and 10386 transitions. [2021-11-19 13:43:38,589 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:38,589 INFO L276 IsEmpty]: Start isEmpty. Operand 3796 states and 10386 transitions. [2021-11-19 13:43:38,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:38,594 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:38,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:38,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2021-11-19 13:43:38,595 INFO L402 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:38,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:38,595 INFO L85 PathProgramCache]: Analyzing trace with hash -53209952, now seen corresponding path program 59 times [2021-11-19 13:43:38,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:38,596 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711450643] [2021-11-19 13:43:38,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:38,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:38,816 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:38,816 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:38,816 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [711450643] [2021-11-19 13:43:38,816 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [711450643] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:38,816 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:38,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:43:38,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2007290997] [2021-11-19 13:43:38,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:38,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:43:38,817 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:38,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:43:38,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:38,818 INFO L87 Difference]: Start difference. First operand 3796 states and 10386 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:39,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:39,215 INFO L93 Difference]: Finished difference Result 3916 states and 10668 transitions. [2021-11-19 13:43:39,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:39,215 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:39,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:39,222 INFO L225 Difference]: With dead ends: 3916 [2021-11-19 13:43:39,222 INFO L226 Difference]: Without dead ends: 3776 [2021-11-19 13:43:39,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:39,223 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 44 mSDsluCounter, 444 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 720 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:39,223 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 87 Invalid, 720 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 712 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:39,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3776 states. [2021-11-19 13:43:39,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3776 to 3776. [2021-11-19 13:43:39,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3776 states, 3775 states have (on average 2.7403973509933777) internal successors, (10345), 3775 states have internal predecessors, (10345), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:39,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3776 states to 3776 states and 10345 transitions. [2021-11-19 13:43:39,298 INFO L78 Accepts]: Start accepts. Automaton has 3776 states and 10345 transitions. Word has length 43 [2021-11-19 13:43:39,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:39,299 INFO L470 AbstractCegarLoop]: Abstraction has 3776 states and 10345 transitions. [2021-11-19 13:43:39,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:39,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3776 states and 10345 transitions. [2021-11-19 13:43:39,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:39,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:39,304 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:39,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2021-11-19 13:43:39,304 INFO L402 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:39,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:39,305 INFO L85 PathProgramCache]: Analyzing trace with hash -1021615146, now seen corresponding path program 60 times [2021-11-19 13:43:39,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:39,305 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1807067443] [2021-11-19 13:43:39,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:39,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:39,494 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:39,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1807067443] [2021-11-19 13:43:39,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1807067443] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:39,494 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:39,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:39,495 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272995134] [2021-11-19 13:43:39,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:39,495 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:39,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:39,497 INFO L87 Difference]: Start difference. First operand 3776 states and 10345 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:39,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:39,773 INFO L93 Difference]: Finished difference Result 4380 states and 12134 transitions. [2021-11-19 13:43:39,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:39,773 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:39,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:39,781 INFO L225 Difference]: With dead ends: 4380 [2021-11-19 13:43:39,781 INFO L226 Difference]: Without dead ends: 4248 [2021-11-19 13:43:39,781 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:39,782 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 56 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:39,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 52 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:39,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4248 states. [2021-11-19 13:43:39,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4248 to 3676. [2021-11-19 13:43:39,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3676 states, 3675 states have (on average 2.7466666666666666) internal successors, (10094), 3675 states have internal predecessors, (10094), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:39,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3676 states to 3676 states and 10094 transitions. [2021-11-19 13:43:39,853 INFO L78 Accepts]: Start accepts. Automaton has 3676 states and 10094 transitions. Word has length 43 [2021-11-19 13:43:39,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:39,853 INFO L470 AbstractCegarLoop]: Abstraction has 3676 states and 10094 transitions. [2021-11-19 13:43:39,853 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:39,853 INFO L276 IsEmpty]: Start isEmpty. Operand 3676 states and 10094 transitions. [2021-11-19 13:43:39,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:39,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:39,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:39,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2021-11-19 13:43:39,859 INFO L402 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:39,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:39,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1520749958, now seen corresponding path program 61 times [2021-11-19 13:43:39,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:39,860 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1128816781] [2021-11-19 13:43:39,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:39,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:40,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:40,057 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:40,057 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1128816781] [2021-11-19 13:43:40,057 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1128816781] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:40,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:40,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:40,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [681783688] [2021-11-19 13:43:40,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:40,059 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:40,059 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:40,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:40,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:40,060 INFO L87 Difference]: Start difference. First operand 3676 states and 10094 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:40,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:40,382 INFO L93 Difference]: Finished difference Result 4510 states and 12425 transitions. [2021-11-19 13:43:40,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:40,383 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:40,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:40,395 INFO L225 Difference]: With dead ends: 4510 [2021-11-19 13:43:40,395 INFO L226 Difference]: Without dead ends: 4310 [2021-11-19 13:43:40,395 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:40,396 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 137 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:40,396 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 46 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:40,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4310 states. [2021-11-19 13:43:40,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4310 to 3584. [2021-11-19 13:43:40,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3584 states, 3583 states have (on average 2.758024002232766) internal successors, (9882), 3583 states have internal predecessors, (9882), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:40,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3584 states to 3584 states and 9882 transitions. [2021-11-19 13:43:40,498 INFO L78 Accepts]: Start accepts. Automaton has 3584 states and 9882 transitions. Word has length 43 [2021-11-19 13:43:40,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:40,499 INFO L470 AbstractCegarLoop]: Abstraction has 3584 states and 9882 transitions. [2021-11-19 13:43:40,499 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:40,499 INFO L276 IsEmpty]: Start isEmpty. Operand 3584 states and 9882 transitions. [2021-11-19 13:43:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:40,506 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:40,507 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:40,507 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2021-11-19 13:43:40,510 INFO L402 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:40,511 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:40,511 INFO L85 PathProgramCache]: Analyzing trace with hash 926431062, now seen corresponding path program 62 times [2021-11-19 13:43:40,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:40,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898507567] [2021-11-19 13:43:40,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:40,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:40,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:40,723 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:40,724 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898507567] [2021-11-19 13:43:40,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898507567] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:40,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:40,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:40,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650018166] [2021-11-19 13:43:40,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:40,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:40,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:40,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:40,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:40,725 INFO L87 Difference]: Start difference. First operand 3584 states and 9882 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:41,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:41,215 INFO L93 Difference]: Finished difference Result 4844 states and 13624 transitions. [2021-11-19 13:43:41,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:41,216 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:41,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:41,229 INFO L225 Difference]: With dead ends: 4844 [2021-11-19 13:43:41,229 INFO L226 Difference]: Without dead ends: 4572 [2021-11-19 13:43:41,229 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:41,230 INFO L933 BasicCegarLoop]: 21 mSDtfsCounter, 127 mSDsluCounter, 344 mSDsCounter, 0 mSdLazyCounter, 601 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:41,230 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 114 Invalid, 621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 601 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:41,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4572 states. [2021-11-19 13:43:41,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4572 to 3376. [2021-11-19 13:43:41,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 3375 states have (on average 2.764148148148148) internal successors, (9329), 3375 states have internal predecessors, (9329), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:41,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 9329 transitions. [2021-11-19 13:43:41,332 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 9329 transitions. Word has length 43 [2021-11-19 13:43:41,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:41,332 INFO L470 AbstractCegarLoop]: Abstraction has 3376 states and 9329 transitions. [2021-11-19 13:43:41,332 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:41,333 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 9329 transitions. [2021-11-19 13:43:41,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:41,340 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:41,340 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:41,340 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2021-11-19 13:43:41,340 INFO L402 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:41,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:41,341 INFO L85 PathProgramCache]: Analyzing trace with hash -783031936, now seen corresponding path program 63 times [2021-11-19 13:43:41,341 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:41,341 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1963046784] [2021-11-19 13:43:41,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:41,342 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:41,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:41,562 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:41,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:41,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1963046784] [2021-11-19 13:43:41,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1963046784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:41,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:41,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:41,563 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279066384] [2021-11-19 13:43:41,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:41,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:41,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:41,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:41,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:41,565 INFO L87 Difference]: Start difference. First operand 3376 states and 9329 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:41,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:41,953 INFO L93 Difference]: Finished difference Result 4120 states and 11533 transitions. [2021-11-19 13:43:41,953 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:41,954 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:41,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:41,965 INFO L225 Difference]: With dead ends: 4120 [2021-11-19 13:43:41,965 INFO L226 Difference]: Without dead ends: 3914 [2021-11-19 13:43:41,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:41,966 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 125 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:41,967 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 64 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 469 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:41,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3914 states. [2021-11-19 13:43:42,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3914 to 3110. [2021-11-19 13:43:42,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 3109 states have (on average 2.802187198456095) internal successors, (8712), 3109 states have internal predecessors, (8712), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:42,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 8712 transitions. [2021-11-19 13:43:42,051 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 8712 transitions. Word has length 43 [2021-11-19 13:43:42,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:42,052 INFO L470 AbstractCegarLoop]: Abstraction has 3110 states and 8712 transitions. [2021-11-19 13:43:42,052 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:42,052 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 8712 transitions. [2021-11-19 13:43:42,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:42,057 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:42,057 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:42,057 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2021-11-19 13:43:42,057 INFO L402 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:42,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:42,058 INFO L85 PathProgramCache]: Analyzing trace with hash -680222044, now seen corresponding path program 64 times [2021-11-19 13:43:42,058 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:42,058 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376499427] [2021-11-19 13:43:42,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:42,058 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:42,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:42,308 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:42,308 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:42,308 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376499427] [2021-11-19 13:43:42,308 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376499427] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:42,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:42,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:42,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400338117] [2021-11-19 13:43:42,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:42,309 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:42,309 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:42,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:42,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:42,310 INFO L87 Difference]: Start difference. First operand 3110 states and 8712 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:42,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:42,641 INFO L93 Difference]: Finished difference Result 3450 states and 9610 transitions. [2021-11-19 13:43:42,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:42,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:42,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:42,648 INFO L225 Difference]: With dead ends: 3450 [2021-11-19 13:43:42,648 INFO L226 Difference]: Without dead ends: 3446 [2021-11-19 13:43:42,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:42,649 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 44 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 542 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 114 SdHoareTripleChecker+Invalid, 559 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 542 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:42,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 114 Invalid, 559 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 542 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:42,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3446 states. [2021-11-19 13:43:42,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3446 to 3316. [2021-11-19 13:43:42,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3316 states, 3315 states have (on average 2.795475113122172) internal successors, (9267), 3315 states have internal predecessors, (9267), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:42,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3316 states to 3316 states and 9267 transitions. [2021-11-19 13:43:42,716 INFO L78 Accepts]: Start accepts. Automaton has 3316 states and 9267 transitions. Word has length 43 [2021-11-19 13:43:42,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:42,717 INFO L470 AbstractCegarLoop]: Abstraction has 3316 states and 9267 transitions. [2021-11-19 13:43:42,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:42,717 INFO L276 IsEmpty]: Start isEmpty. Operand 3316 states and 9267 transitions. [2021-11-19 13:43:42,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:42,722 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:42,722 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:42,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2021-11-19 13:43:42,723 INFO L402 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:42,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash 72229702, now seen corresponding path program 65 times [2021-11-19 13:43:42,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:42,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968636916] [2021-11-19 13:43:42,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:42,724 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:42,908 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:42,909 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968636916] [2021-11-19 13:43:42,909 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968636916] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:42,909 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:42,909 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:42,909 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817290694] [2021-11-19 13:43:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:42,910 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:42,910 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:42,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:42,911 INFO L87 Difference]: Start difference. First operand 3316 states and 9267 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:43,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:43,258 INFO L93 Difference]: Finished difference Result 3350 states and 9336 transitions. [2021-11-19 13:43:43,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:43,259 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:43,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:43,265 INFO L225 Difference]: With dead ends: 3350 [2021-11-19 13:43:43,265 INFO L226 Difference]: Without dead ends: 3198 [2021-11-19 13:43:43,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:43,266 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 23 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 557 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 557 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:43,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 111 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 557 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:43,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3198 states. [2021-11-19 13:43:43,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3198 to 3168. [2021-11-19 13:43:43,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3168 states, 3167 states have (on average 2.8023365961477738) internal successors, (8875), 3167 states have internal predecessors, (8875), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:43,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3168 states to 3168 states and 8875 transitions. [2021-11-19 13:43:43,322 INFO L78 Accepts]: Start accepts. Automaton has 3168 states and 8875 transitions. Word has length 43 [2021-11-19 13:43:43,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:43,323 INFO L470 AbstractCegarLoop]: Abstraction has 3168 states and 8875 transitions. [2021-11-19 13:43:43,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:43,323 INFO L276 IsEmpty]: Start isEmpty. Operand 3168 states and 8875 transitions. [2021-11-19 13:43:43,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:43,328 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:43,328 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:43,328 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2021-11-19 13:43:43,328 INFO L402 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:43,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:43,328 INFO L85 PathProgramCache]: Analyzing trace with hash 1906054402, now seen corresponding path program 66 times [2021-11-19 13:43:43,329 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:43,329 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [638169698] [2021-11-19 13:43:43,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:43,329 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:43,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:43,563 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:43,563 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:43,563 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [638169698] [2021-11-19 13:43:43,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [638169698] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:43,563 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:43,563 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:43,564 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187517119] [2021-11-19 13:43:43,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:43,564 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:43,564 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:43,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:43,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:43,565 INFO L87 Difference]: Start difference. First operand 3168 states and 8875 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:44,006 INFO L93 Difference]: Finished difference Result 3326 states and 9266 transitions. [2021-11-19 13:43:44,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:44,007 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:44,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:44,015 INFO L225 Difference]: With dead ends: 3326 [2021-11-19 13:43:44,015 INFO L226 Difference]: Without dead ends: 3160 [2021-11-19 13:43:44,016 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:44,016 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 59 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:44,016 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 100 Invalid, 526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:44,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3160 states. [2021-11-19 13:43:44,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3160 to 3130. [2021-11-19 13:43:44,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3130 states, 3129 states have (on average 2.802173218280601) internal successors, (8768), 3129 states have internal predecessors, (8768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3130 states to 3130 states and 8768 transitions. [2021-11-19 13:43:44,097 INFO L78 Accepts]: Start accepts. Automaton has 3130 states and 8768 transitions. Word has length 43 [2021-11-19 13:43:44,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:44,098 INFO L470 AbstractCegarLoop]: Abstraction has 3130 states and 8768 transitions. [2021-11-19 13:43:44,098 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,098 INFO L276 IsEmpty]: Start isEmpty. Operand 3130 states and 8768 transitions. [2021-11-19 13:43:44,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:44,105 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:44,105 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:44,106 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2021-11-19 13:43:44,106 INFO L402 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:44,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:44,107 INFO L85 PathProgramCache]: Analyzing trace with hash -19129178, now seen corresponding path program 67 times [2021-11-19 13:43:44,107 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:44,107 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782779519] [2021-11-19 13:43:44,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:44,107 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:44,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:44,300 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:44,300 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:44,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782779519] [2021-11-19 13:43:44,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782779519] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:44,300 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:44,301 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:44,301 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081454611] [2021-11-19 13:43:44,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:44,301 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:44,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:44,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:44,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:44,302 INFO L87 Difference]: Start difference. First operand 3130 states and 8768 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:44,552 INFO L93 Difference]: Finished difference Result 3042 states and 8444 transitions. [2021-11-19 13:43:44,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:44,553 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:44,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:44,558 INFO L225 Difference]: With dead ends: 3042 [2021-11-19 13:43:44,558 INFO L226 Difference]: Without dead ends: 2856 [2021-11-19 13:43:44,558 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:44,559 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 47 mSDsluCounter, 213 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:44,559 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 79 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:44,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2856 states. [2021-11-19 13:43:44,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2856 to 2850. [2021-11-19 13:43:44,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2850 states, 2849 states have (on average 2.796770796770797) internal successors, (7968), 2849 states have internal predecessors, (7968), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2850 states to 2850 states and 7968 transitions. [2021-11-19 13:43:44,609 INFO L78 Accepts]: Start accepts. Automaton has 2850 states and 7968 transitions. Word has length 43 [2021-11-19 13:43:44,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:44,610 INFO L470 AbstractCegarLoop]: Abstraction has 2850 states and 7968 transitions. [2021-11-19 13:43:44,611 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:44,611 INFO L276 IsEmpty]: Start isEmpty. Operand 2850 states and 7968 transitions. [2021-11-19 13:43:44,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:44,617 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:44,617 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:44,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2021-11-19 13:43:44,618 INFO L402 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:44,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:44,618 INFO L85 PathProgramCache]: Analyzing trace with hash 725934078, now seen corresponding path program 68 times [2021-11-19 13:43:44,618 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:44,619 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [889155288] [2021-11-19 13:43:44,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:44,619 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:44,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:44,878 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:44,878 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [889155288] [2021-11-19 13:43:44,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [889155288] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:44,879 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:44,879 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:44,879 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649587735] [2021-11-19 13:43:44,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:44,880 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:44,880 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:44,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:44,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:44,880 INFO L87 Difference]: Start difference. First operand 2850 states and 7968 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:45,337 INFO L93 Difference]: Finished difference Result 3080 states and 8587 transitions. [2021-11-19 13:43:45,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:43:45,337 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:45,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:45,343 INFO L225 Difference]: With dead ends: 3080 [2021-11-19 13:43:45,343 INFO L226 Difference]: Without dead ends: 3040 [2021-11-19 13:43:45,343 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:43:45,343 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 93 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 503 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 113 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 503 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:45,344 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [93 Valid, 113 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 503 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:45,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3040 states. [2021-11-19 13:43:45,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3040 to 2830. [2021-11-19 13:43:45,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2829 states have (on average 2.80028278543655) internal successors, (7922), 2829 states have internal predecessors, (7922), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:45,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 7922 transitions. [2021-11-19 13:43:45,398 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 7922 transitions. Word has length 43 [2021-11-19 13:43:45,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:45,398 INFO L470 AbstractCegarLoop]: Abstraction has 2830 states and 7922 transitions. [2021-11-19 13:43:45,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:45,398 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 7922 transitions. [2021-11-19 13:43:45,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:45,402 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:45,402 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:45,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2021-11-19 13:43:45,403 INFO L402 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:45,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:45,403 INFO L85 PathProgramCache]: Analyzing trace with hash -2010947046, now seen corresponding path program 69 times [2021-11-19 13:43:45,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:45,404 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750886911] [2021-11-19 13:43:45,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:45,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:45,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:45,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:45,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:45,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750886911] [2021-11-19 13:43:45,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750886911] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:45,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:45,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:43:45,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160654177] [2021-11-19 13:43:45,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:45,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:43:45,681 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:45,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:43:45,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:45,681 INFO L87 Difference]: Start difference. First operand 2830 states and 7922 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:46,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:46,328 INFO L93 Difference]: Finished difference Result 3082 states and 8538 transitions. [2021-11-19 13:43:46,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-19 13:43:46,329 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:46,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:46,337 INFO L225 Difference]: With dead ends: 3082 [2021-11-19 13:43:46,337 INFO L226 Difference]: Without dead ends: 3030 [2021-11-19 13:43:46,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:43:46,338 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 107 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 792 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:46,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 161 Invalid, 833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 792 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-19 13:43:46,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3030 states. [2021-11-19 13:43:46,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3030 to 2846. [2021-11-19 13:43:46,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2846 states, 2845 states have (on average 2.795079086115993) internal successors, (7952), 2845 states have internal predecessors, (7952), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:46,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 7952 transitions. [2021-11-19 13:43:46,403 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 7952 transitions. Word has length 43 [2021-11-19 13:43:46,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:46,403 INFO L470 AbstractCegarLoop]: Abstraction has 2846 states and 7952 transitions. [2021-11-19 13:43:46,403 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:46,404 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 7952 transitions. [2021-11-19 13:43:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:46,407 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:46,408 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:46,408 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2021-11-19 13:43:46,408 INFO L402 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:46,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:46,408 INFO L85 PathProgramCache]: Analyzing trace with hash 1754223540, now seen corresponding path program 70 times [2021-11-19 13:43:46,408 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:46,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962570826] [2021-11-19 13:43:46,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:46,409 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:46,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:46,644 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:46,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962570826] [2021-11-19 13:43:46,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962570826] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:46,645 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:46,645 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:46,645 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251190942] [2021-11-19 13:43:46,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:46,646 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:46,646 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:46,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:46,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:46,646 INFO L87 Difference]: Start difference. First operand 2846 states and 7952 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:47,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:47,136 INFO L93 Difference]: Finished difference Result 2688 states and 7338 transitions. [2021-11-19 13:43:47,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:47,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:47,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:47,142 INFO L225 Difference]: With dead ends: 2688 [2021-11-19 13:43:47,143 INFO L226 Difference]: Without dead ends: 2380 [2021-11-19 13:43:47,143 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:47,143 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 77 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 648 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:47,144 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 132 Invalid, 648 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:47,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2380 states. [2021-11-19 13:43:47,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2380 to 2326. [2021-11-19 13:43:47,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2326 states, 2325 states have (on average 2.73247311827957) internal successors, (6353), 2325 states have internal predecessors, (6353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:47,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2326 states to 2326 states and 6353 transitions. [2021-11-19 13:43:47,203 INFO L78 Accepts]: Start accepts. Automaton has 2326 states and 6353 transitions. Word has length 43 [2021-11-19 13:43:47,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:47,203 INFO L470 AbstractCegarLoop]: Abstraction has 2326 states and 6353 transitions. [2021-11-19 13:43:47,203 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:47,204 INFO L276 IsEmpty]: Start isEmpty. Operand 2326 states and 6353 transitions. [2021-11-19 13:43:47,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:47,208 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:47,208 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:47,208 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2021-11-19 13:43:47,208 INFO L402 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:47,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:47,209 INFO L85 PathProgramCache]: Analyzing trace with hash -771519786, now seen corresponding path program 71 times [2021-11-19 13:43:47,209 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:47,209 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664780825] [2021-11-19 13:43:47,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:47,209 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:47,423 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:47,423 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664780825] [2021-11-19 13:43:47,423 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664780825] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:47,423 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:47,423 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:43:47,424 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1124352406] [2021-11-19 13:43:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:47,424 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:43:47,424 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:47,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:43:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:47,425 INFO L87 Difference]: Start difference. First operand 2326 states and 6353 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:47,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:47,966 INFO L93 Difference]: Finished difference Result 2552 states and 6918 transitions. [2021-11-19 13:43:47,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:43:47,966 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:47,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:47,970 INFO L225 Difference]: With dead ends: 2552 [2021-11-19 13:43:47,971 INFO L226 Difference]: Without dead ends: 2412 [2021-11-19 13:43:47,971 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-11-19 13:43:47,971 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 142 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 126 SdHoareTripleChecker+Invalid, 676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:47,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [142 Valid, 126 Invalid, 676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:47,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2412 states. [2021-11-19 13:43:48,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2412 to 2262. [2021-11-19 13:43:48,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2262 states, 2261 states have (on average 2.7408226448474124) internal successors, (6197), 2261 states have internal predecessors, (6197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:48,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2262 states to 2262 states and 6197 transitions. [2021-11-19 13:43:48,012 INFO L78 Accepts]: Start accepts. Automaton has 2262 states and 6197 transitions. Word has length 43 [2021-11-19 13:43:48,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:48,012 INFO L470 AbstractCegarLoop]: Abstraction has 2262 states and 6197 transitions. [2021-11-19 13:43:48,012 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:48,012 INFO L276 IsEmpty]: Start isEmpty. Operand 2262 states and 6197 transitions. [2021-11-19 13:43:48,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:48,015 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:48,015 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:48,016 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2021-11-19 13:43:48,016 INFO L402 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:48,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:48,016 INFO L85 PathProgramCache]: Analyzing trace with hash 69013150, now seen corresponding path program 72 times [2021-11-19 13:43:48,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:48,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249146789] [2021-11-19 13:43:48,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:48,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:48,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:48,212 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:48,212 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249146789] [2021-11-19 13:43:48,212 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249146789] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:48,212 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:48,212 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:48,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188714372] [2021-11-19 13:43:48,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:48,213 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:48,213 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:48,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:48,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:48,214 INFO L87 Difference]: Start difference. First operand 2262 states and 6197 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:48,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:48,601 INFO L93 Difference]: Finished difference Result 2336 states and 6350 transitions. [2021-11-19 13:43:48,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:48,602 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:48,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:48,606 INFO L225 Difference]: With dead ends: 2336 [2021-11-19 13:43:48,606 INFO L226 Difference]: Without dead ends: 2280 [2021-11-19 13:43:48,606 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:48,607 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 68 mSDsluCounter, 292 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:48,607 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [68 Valid, 105 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:48,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2280 states. [2021-11-19 13:43:48,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2280 to 2242. [2021-11-19 13:43:48,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2242 states, 2241 states have (on average 2.741186970102633) internal successors, (6143), 2241 states have internal predecessors, (6143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:48,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2242 states to 2242 states and 6143 transitions. [2021-11-19 13:43:48,665 INFO L78 Accepts]: Start accepts. Automaton has 2242 states and 6143 transitions. Word has length 43 [2021-11-19 13:43:48,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:48,665 INFO L470 AbstractCegarLoop]: Abstraction has 2242 states and 6143 transitions. [2021-11-19 13:43:48,665 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:48,665 INFO L276 IsEmpty]: Start isEmpty. Operand 2242 states and 6143 transitions. [2021-11-19 13:43:48,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:48,670 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:48,670 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:48,671 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2021-11-19 13:43:48,671 INFO L402 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:48,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:48,672 INFO L85 PathProgramCache]: Analyzing trace with hash -1397936568, now seen corresponding path program 73 times [2021-11-19 13:43:48,672 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:48,672 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126959247] [2021-11-19 13:43:48,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:48,672 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:48,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:48,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:48,835 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:48,835 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126959247] [2021-11-19 13:43:48,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126959247] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:48,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:48,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:48,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354214074] [2021-11-19 13:43:48,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:48,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:48,837 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:48,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:48,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:48,837 INFO L87 Difference]: Start difference. First operand 2242 states and 6143 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:49,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:49,172 INFO L93 Difference]: Finished difference Result 2346 states and 6381 transitions. [2021-11-19 13:43:49,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:49,173 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:49,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:49,178 INFO L225 Difference]: With dead ends: 2346 [2021-11-19 13:43:49,178 INFO L226 Difference]: Without dead ends: 2128 [2021-11-19 13:43:49,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:49,179 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 45 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 406 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:49,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 74 Invalid, 406 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:49,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2128 states. [2021-11-19 13:43:49,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2128 to 2128. [2021-11-19 13:43:49,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2128 states, 2127 states have (on average 2.745651151857076) internal successors, (5840), 2127 states have internal predecessors, (5840), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:49,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2128 states to 2128 states and 5840 transitions. [2021-11-19 13:43:49,229 INFO L78 Accepts]: Start accepts. Automaton has 2128 states and 5840 transitions. Word has length 43 [2021-11-19 13:43:49,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:49,229 INFO L470 AbstractCegarLoop]: Abstraction has 2128 states and 5840 transitions. [2021-11-19 13:43:49,230 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:49,230 INFO L276 IsEmpty]: Start isEmpty. Operand 2128 states and 5840 transitions. [2021-11-19 13:43:49,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:49,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:49,234 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:49,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2021-11-19 13:43:49,235 INFO L402 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:49,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:49,235 INFO L85 PathProgramCache]: Analyzing trace with hash -258577388, now seen corresponding path program 74 times [2021-11-19 13:43:49,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:49,236 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795292707] [2021-11-19 13:43:49,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:49,236 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:49,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:49,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:49,364 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:49,364 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795292707] [2021-11-19 13:43:49,364 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795292707] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:49,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:49,365 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:49,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [907583086] [2021-11-19 13:43:49,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:49,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:49,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:49,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:49,366 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:49,366 INFO L87 Difference]: Start difference. First operand 2128 states and 5840 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:49,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:49,588 INFO L93 Difference]: Finished difference Result 2470 states and 6783 transitions. [2021-11-19 13:43:49,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:49,588 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:49,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:49,592 INFO L225 Difference]: With dead ends: 2470 [2021-11-19 13:43:49,592 INFO L226 Difference]: Without dead ends: 1856 [2021-11-19 13:43:49,592 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:49,592 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 95 mSDsluCounter, 189 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:49,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 82 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:49,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1856 states. [2021-11-19 13:43:49,615 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1856 to 1856. [2021-11-19 13:43:49,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1856 states, 1855 states have (on average 2.7180592991913746) internal successors, (5042), 1855 states have internal predecessors, (5042), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:49,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1856 states to 1856 states and 5042 transitions. [2021-11-19 13:43:49,621 INFO L78 Accepts]: Start accepts. Automaton has 1856 states and 5042 transitions. Word has length 43 [2021-11-19 13:43:49,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:49,621 INFO L470 AbstractCegarLoop]: Abstraction has 1856 states and 5042 transitions. [2021-11-19 13:43:49,621 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:49,622 INFO L276 IsEmpty]: Start isEmpty. Operand 1856 states and 5042 transitions. [2021-11-19 13:43:49,624 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:49,624 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:49,624 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:49,624 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2021-11-19 13:43:49,624 INFO L402 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:49,625 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:49,625 INFO L85 PathProgramCache]: Analyzing trace with hash -1283372060, now seen corresponding path program 75 times [2021-11-19 13:43:49,625 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:49,626 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204708505] [2021-11-19 13:43:49,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:49,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:49,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:49,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:49,812 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:49,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204708505] [2021-11-19 13:43:49,813 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204708505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:49,813 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:49,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:49,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763477848] [2021-11-19 13:43:49,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:49,814 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:49,814 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:49,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:49,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:49,815 INFO L87 Difference]: Start difference. First operand 1856 states and 5042 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:50,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:50,158 INFO L93 Difference]: Finished difference Result 1858 states and 4949 transitions. [2021-11-19 13:43:50,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:50,158 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:50,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:50,163 INFO L225 Difference]: With dead ends: 1858 [2021-11-19 13:43:50,163 INFO L226 Difference]: Without dead ends: 1858 [2021-11-19 13:43:50,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:50,164 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 89 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 48 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:50,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [89 Valid, 48 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1858 states. [2021-11-19 13:43:50,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1858 to 1684. [2021-11-19 13:43:50,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 2.65359477124183) internal successors, (4466), 1683 states have internal predecessors, (4466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:50,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 4466 transitions. [2021-11-19 13:43:50,210 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 4466 transitions. Word has length 43 [2021-11-19 13:43:50,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:50,210 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 4466 transitions. [2021-11-19 13:43:50,211 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:50,211 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 4466 transitions. [2021-11-19 13:43:50,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:50,215 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:50,215 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:50,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2021-11-19 13:43:50,216 INFO L402 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:50,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:50,216 INFO L85 PathProgramCache]: Analyzing trace with hash 593466624, now seen corresponding path program 76 times [2021-11-19 13:43:50,217 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:50,217 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216080268] [2021-11-19 13:43:50,217 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:50,217 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:50,391 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:50,391 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:50,391 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216080268] [2021-11-19 13:43:50,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216080268] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:50,392 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:50,392 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:50,392 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613362270] [2021-11-19 13:43:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:50,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:50,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:50,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:50,394 INFO L87 Difference]: Start difference. First operand 1684 states and 4466 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:50,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:50,696 INFO L93 Difference]: Finished difference Result 2108 states and 5568 transitions. [2021-11-19 13:43:50,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:50,697 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:50,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:50,702 INFO L225 Difference]: With dead ends: 2108 [2021-11-19 13:43:50,702 INFO L226 Difference]: Without dead ends: 1914 [2021-11-19 13:43:50,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:50,703 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 66 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 381 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 76 SdHoareTripleChecker+Invalid, 402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:50,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [66 Valid, 76 Invalid, 402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 381 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:50,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1914 states. [2021-11-19 13:43:50,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1914 to 1780. [2021-11-19 13:43:50,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1780 states, 1779 states have (on average 2.6351883080382237) internal successors, (4688), 1779 states have internal predecessors, (4688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:50,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1780 states to 1780 states and 4688 transitions. [2021-11-19 13:43:50,750 INFO L78 Accepts]: Start accepts. Automaton has 1780 states and 4688 transitions. Word has length 43 [2021-11-19 13:43:50,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:50,750 INFO L470 AbstractCegarLoop]: Abstraction has 1780 states and 4688 transitions. [2021-11-19 13:43:50,750 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:50,750 INFO L276 IsEmpty]: Start isEmpty. Operand 1780 states and 4688 transitions. [2021-11-19 13:43:50,754 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:50,754 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:50,754 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:50,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2021-11-19 13:43:50,755 INFO L402 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:50,755 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:50,755 INFO L85 PathProgramCache]: Analyzing trace with hash -1266401726, now seen corresponding path program 77 times [2021-11-19 13:43:50,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:50,756 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483996393] [2021-11-19 13:43:50,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:50,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:50,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:50,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:50,929 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:50,929 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483996393] [2021-11-19 13:43:50,929 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483996393] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:50,929 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:50,930 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-19 13:43:50,930 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1827641814] [2021-11-19 13:43:50,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:50,930 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:43:50,931 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:50,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:43:50,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:50,931 INFO L87 Difference]: Start difference. First operand 1780 states and 4688 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:51,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:51,213 INFO L93 Difference]: Finished difference Result 1870 states and 4923 transitions. [2021-11-19 13:43:51,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:43:51,214 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:51,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:51,218 INFO L225 Difference]: With dead ends: 1870 [2021-11-19 13:43:51,219 INFO L226 Difference]: Without dead ends: 1764 [2021-11-19 13:43:51,219 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:43:51,220 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 40 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 338 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:51,220 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 58 Invalid, 338 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:51,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1764 states. [2021-11-19 13:43:51,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1764 to 1674. [2021-11-19 13:43:51,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1674 states, 1673 states have (on average 2.654512851165571) internal successors, (4441), 1673 states have internal predecessors, (4441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:51,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1674 states to 1674 states and 4441 transitions. [2021-11-19 13:43:51,265 INFO L78 Accepts]: Start accepts. Automaton has 1674 states and 4441 transitions. Word has length 43 [2021-11-19 13:43:51,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:51,265 INFO L470 AbstractCegarLoop]: Abstraction has 1674 states and 4441 transitions. [2021-11-19 13:43:51,265 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 6 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:51,266 INFO L276 IsEmpty]: Start isEmpty. Operand 1674 states and 4441 transitions. [2021-11-19 13:43:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:51,269 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:51,270 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:51,270 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2021-11-19 13:43:51,270 INFO L402 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:51,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:51,271 INFO L85 PathProgramCache]: Analyzing trace with hash 1471911798, now seen corresponding path program 78 times [2021-11-19 13:43:51,271 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:51,271 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [147789841] [2021-11-19 13:43:51,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:51,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:51,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:51,512 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:51,512 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [147789841] [2021-11-19 13:43:51,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [147789841] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:51,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:51,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:51,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070481667] [2021-11-19 13:43:51,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:51,513 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:51,513 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:51,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:51,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:51,514 INFO L87 Difference]: Start difference. First operand 1674 states and 4441 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:52,028 INFO L93 Difference]: Finished difference Result 2018 states and 5285 transitions. [2021-11-19 13:43:52,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:52,029 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:52,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:52,032 INFO L225 Difference]: With dead ends: 2018 [2021-11-19 13:43:52,032 INFO L226 Difference]: Without dead ends: 1730 [2021-11-19 13:43:52,033 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:52,033 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 83 mSDsluCounter, 428 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 147 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:52,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 147 Invalid, 750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-19 13:43:52,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1730 states. [2021-11-19 13:43:52,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1730 to 1668. [2021-11-19 13:43:52,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1668 states, 1667 states have (on average 2.650269946010798) internal successors, (4418), 1667 states have internal predecessors, (4418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1668 states to 1668 states and 4418 transitions. [2021-11-19 13:43:52,064 INFO L78 Accepts]: Start accepts. Automaton has 1668 states and 4418 transitions. Word has length 43 [2021-11-19 13:43:52,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:52,065 INFO L470 AbstractCegarLoop]: Abstraction has 1668 states and 4418 transitions. [2021-11-19 13:43:52,065 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,065 INFO L276 IsEmpty]: Start isEmpty. Operand 1668 states and 4418 transitions. [2021-11-19 13:43:52,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:52,067 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:52,067 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:52,067 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2021-11-19 13:43:52,068 INFO L402 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:52,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:52,068 INFO L85 PathProgramCache]: Analyzing trace with hash -2020030012, now seen corresponding path program 79 times [2021-11-19 13:43:52,068 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:52,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442809106] [2021-11-19 13:43:52,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:52,068 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:52,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:52,269 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:52,270 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:52,270 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442809106] [2021-11-19 13:43:52,270 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442809106] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:52,270 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:52,270 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:52,271 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887429066] [2021-11-19 13:43:52,271 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:52,271 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:52,271 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:52,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:52,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:52,272 INFO L87 Difference]: Start difference. First operand 1668 states and 4418 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:52,640 INFO L93 Difference]: Finished difference Result 1816 states and 4792 transitions. [2021-11-19 13:43:52,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:52,641 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:52,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:52,645 INFO L225 Difference]: With dead ends: 1816 [2021-11-19 13:43:52,645 INFO L226 Difference]: Without dead ends: 1688 [2021-11-19 13:43:52,645 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:52,646 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 45 mSDsluCounter, 308 mSDsCounter, 0 mSdLazyCounter, 558 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 107 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:52,646 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 107 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 558 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:52,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2021-11-19 13:43:52,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1684. [2021-11-19 13:43:52,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1684 states, 1683 states have (on average 2.6428995840760545) internal successors, (4448), 1683 states have internal predecessors, (4448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1684 states to 1684 states and 4448 transitions. [2021-11-19 13:43:52,684 INFO L78 Accepts]: Start accepts. Automaton has 1684 states and 4448 transitions. Word has length 43 [2021-11-19 13:43:52,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:52,684 INFO L470 AbstractCegarLoop]: Abstraction has 1684 states and 4448 transitions. [2021-11-19 13:43:52,684 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 1684 states and 4448 transitions. [2021-11-19 13:43:52,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:52,688 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:52,688 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:52,688 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2021-11-19 13:43:52,689 INFO L402 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:52,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:52,689 INFO L85 PathProgramCache]: Analyzing trace with hash -318056688, now seen corresponding path program 80 times [2021-11-19 13:43:52,689 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:52,689 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875794141] [2021-11-19 13:43:52,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:52,690 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:52,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:52,904 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:52,905 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:52,905 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875794141] [2021-11-19 13:43:52,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875794141] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:52,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:52,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:52,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016556692] [2021-11-19 13:43:52,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:52,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:52,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:52,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:52,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:52,906 INFO L87 Difference]: Start difference. First operand 1684 states and 4448 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:53,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:53,307 INFO L93 Difference]: Finished difference Result 1770 states and 4619 transitions. [2021-11-19 13:43:53,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:53,308 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:53,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:53,311 INFO L225 Difference]: With dead ends: 1770 [2021-11-19 13:43:53,311 INFO L226 Difference]: Without dead ends: 1518 [2021-11-19 13:43:53,311 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:53,312 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 94 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 112 SdHoareTripleChecker+Invalid, 564 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:53,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 112 Invalid, 564 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 540 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:43:53,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1518 states. [2021-11-19 13:43:53,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1518 to 1464. [2021-11-19 13:43:53,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1464 states, 1463 states have (on average 2.6220095693779903) internal successors, (3836), 1463 states have internal predecessors, (3836), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:53,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1464 states to 1464 states and 3836 transitions. [2021-11-19 13:43:53,341 INFO L78 Accepts]: Start accepts. Automaton has 1464 states and 3836 transitions. Word has length 43 [2021-11-19 13:43:53,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:53,341 INFO L470 AbstractCegarLoop]: Abstraction has 1464 states and 3836 transitions. [2021-11-19 13:43:53,341 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:53,342 INFO L276 IsEmpty]: Start isEmpty. Operand 1464 states and 3836 transitions. [2021-11-19 13:43:53,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:53,344 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:53,344 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:53,345 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2021-11-19 13:43:53,345 INFO L402 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:53,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:53,345 INFO L85 PathProgramCache]: Analyzing trace with hash -1511874580, now seen corresponding path program 81 times [2021-11-19 13:43:53,345 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:53,346 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035325491] [2021-11-19 13:43:53,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:53,346 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:53,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:53,508 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:53,509 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:53,509 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035325491] [2021-11-19 13:43:53,509 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035325491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:53,509 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:53,509 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:53,510 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867101712] [2021-11-19 13:43:53,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:53,510 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:53,510 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:53,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:53,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:53,511 INFO L87 Difference]: Start difference. First operand 1464 states and 3836 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:53,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:53,790 INFO L93 Difference]: Finished difference Result 1590 states and 4175 transitions. [2021-11-19 13:43:53,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:53,791 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:53,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:53,793 INFO L225 Difference]: With dead ends: 1590 [2021-11-19 13:43:53,793 INFO L226 Difference]: Without dead ends: 1590 [2021-11-19 13:43:53,794 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:53,794 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 53 mSDsluCounter, 286 mSDsCounter, 0 mSdLazyCounter, 507 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:53,794 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [53 Valid, 102 Invalid, 517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 507 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:53,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2021-11-19 13:43:53,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1590. [2021-11-19 13:43:53,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1590 states, 1589 states have (on average 2.6274386406545) internal successors, (4175), 1589 states have internal predecessors, (4175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:53,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1590 states to 1590 states and 4175 transitions. [2021-11-19 13:43:53,816 INFO L78 Accepts]: Start accepts. Automaton has 1590 states and 4175 transitions. Word has length 43 [2021-11-19 13:43:53,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:53,816 INFO L470 AbstractCegarLoop]: Abstraction has 1590 states and 4175 transitions. [2021-11-19 13:43:53,816 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:53,816 INFO L276 IsEmpty]: Start isEmpty. Operand 1590 states and 4175 transitions. [2021-11-19 13:43:53,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:53,818 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:53,818 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:53,818 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2021-11-19 13:43:53,818 INFO L402 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:53,818 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:53,819 INFO L85 PathProgramCache]: Analyzing trace with hash 364964104, now seen corresponding path program 82 times [2021-11-19 13:43:53,819 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:53,819 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749968635] [2021-11-19 13:43:53,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:53,819 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:53,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:54,100 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:54,100 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:54,100 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749968635] [2021-11-19 13:43:54,100 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749968635] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:54,100 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:54,101 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:54,101 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118429289] [2021-11-19 13:43:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:54,101 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:54,101 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:54,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:54,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:54,102 INFO L87 Difference]: Start difference. First operand 1590 states and 4175 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:54,397 INFO L93 Difference]: Finished difference Result 1638 states and 4275 transitions. [2021-11-19 13:43:54,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:54,397 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:54,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:54,399 INFO L225 Difference]: With dead ends: 1638 [2021-11-19 13:43:54,400 INFO L226 Difference]: Without dead ends: 1474 [2021-11-19 13:43:54,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:54,400 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 48 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 686 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:54,400 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 140 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 686 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:54,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1474 states. [2021-11-19 13:43:54,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1474 to 1474. [2021-11-19 13:43:54,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1474 states, 1473 states have (on average 2.611676849966056) internal successors, (3847), 1473 states have internal predecessors, (3847), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1474 states to 1474 states and 3847 transitions. [2021-11-19 13:43:54,423 INFO L78 Accepts]: Start accepts. Automaton has 1474 states and 3847 transitions. Word has length 43 [2021-11-19 13:43:54,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:54,423 INFO L470 AbstractCegarLoop]: Abstraction has 1474 states and 3847 transitions. [2021-11-19 13:43:54,423 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,423 INFO L276 IsEmpty]: Start isEmpty. Operand 1474 states and 3847 transitions. [2021-11-19 13:43:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:54,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:54,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:54,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2021-11-19 13:43:54,425 INFO L402 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:54,426 INFO L85 PathProgramCache]: Analyzing trace with hash -962500994, now seen corresponding path program 83 times [2021-11-19 13:43:54,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:54,426 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355457534] [2021-11-19 13:43:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:54,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:54,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:54,629 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:54,630 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:54,630 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355457534] [2021-11-19 13:43:54,630 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355457534] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:54,630 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:54,630 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:54,630 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056561215] [2021-11-19 13:43:54,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:54,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:54,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:54,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:54,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:54,631 INFO L87 Difference]: Start difference. First operand 1474 states and 3847 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:54,893 INFO L93 Difference]: Finished difference Result 1390 states and 3427 transitions. [2021-11-19 13:43:54,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:54,894 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:54,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:54,895 INFO L225 Difference]: With dead ends: 1390 [2021-11-19 13:43:54,895 INFO L226 Difference]: Without dead ends: 1336 [2021-11-19 13:43:54,896 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:54,897 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 114 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 358 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:54,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 70 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 358 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:54,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1336 states. [2021-11-19 13:43:54,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1336 to 1090. [2021-11-19 13:43:54,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1090 states, 1089 states have (on average 2.441689623507805) internal successors, (2659), 1089 states have internal predecessors, (2659), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1090 states to 1090 states and 2659 transitions. [2021-11-19 13:43:54,913 INFO L78 Accepts]: Start accepts. Automaton has 1090 states and 2659 transitions. Word has length 43 [2021-11-19 13:43:54,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:54,913 INFO L470 AbstractCegarLoop]: Abstraction has 1090 states and 2659 transitions. [2021-11-19 13:43:54,913 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:54,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1090 states and 2659 transitions. [2021-11-19 13:43:54,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:54,914 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:54,915 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:54,915 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82 [2021-11-19 13:43:54,915 INFO L402 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:54,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:54,915 INFO L85 PathProgramCache]: Analyzing trace with hash 203762496, now seen corresponding path program 84 times [2021-11-19 13:43:54,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:54,915 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [764516542] [2021-11-19 13:43:54,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:54,916 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:54,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:55,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:55,092 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:55,092 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [764516542] [2021-11-19 13:43:55,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [764516542] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:55,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:55,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:55,096 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173666939] [2021-11-19 13:43:55,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:55,096 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:55,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:55,097 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:55,097 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:55,097 INFO L87 Difference]: Start difference. First operand 1090 states and 2659 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:55,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:55,442 INFO L93 Difference]: Finished difference Result 916 states and 2184 transitions. [2021-11-19 13:43:55,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:55,442 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:55,444 INFO L225 Difference]: With dead ends: 916 [2021-11-19 13:43:55,444 INFO L226 Difference]: Without dead ends: 836 [2021-11-19 13:43:55,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:43:55,445 INFO L933 BasicCegarLoop]: 16 mSDtfsCounter, 64 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 473 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 496 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 473 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:55,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 90 Invalid, 496 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 473 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:55,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2021-11-19 13:43:55,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 802. [2021-11-19 13:43:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 801 states have (on average 2.3807740324594255) internal successors, (1907), 801 states have internal predecessors, (1907), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:55,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 1907 transitions. [2021-11-19 13:43:55,461 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 1907 transitions. Word has length 43 [2021-11-19 13:43:55,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:55,461 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 1907 transitions. [2021-11-19 13:43:55,461 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:55,462 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 1907 transitions. [2021-11-19 13:43:55,463 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:55,463 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:55,463 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:55,464 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83 [2021-11-19 13:43:55,465 INFO L402 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:55,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:55,465 INFO L85 PathProgramCache]: Analyzing trace with hash 1563730194, now seen corresponding path program 85 times [2021-11-19 13:43:55,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:55,466 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1876653869] [2021-11-19 13:43:55,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:55,466 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:55,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:55,679 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:55,679 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1876653869] [2021-11-19 13:43:55,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1876653869] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:55,680 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:55,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:55,680 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317589361] [2021-11-19 13:43:55,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:55,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:55,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:55,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:55,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:55,681 INFO L87 Difference]: Start difference. First operand 802 states and 1907 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:56,036 INFO L93 Difference]: Finished difference Result 862 states and 2033 transitions. [2021-11-19 13:43:56,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:56,037 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:56,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:56,038 INFO L225 Difference]: With dead ends: 862 [2021-11-19 13:43:56,038 INFO L226 Difference]: Without dead ends: 766 [2021-11-19 13:43:56,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:56,039 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 49 mSDsluCounter, 332 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 111 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:56,039 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 111 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:56,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766 states. [2021-11-19 13:43:56,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 766 to 758. [2021-11-19 13:43:56,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 758 states, 757 states have (on average 2.3844121532364597) internal successors, (1805), 757 states have internal predecessors, (1805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 758 states to 758 states and 1805 transitions. [2021-11-19 13:43:56,049 INFO L78 Accepts]: Start accepts. Automaton has 758 states and 1805 transitions. Word has length 43 [2021-11-19 13:43:56,049 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:56,049 INFO L470 AbstractCegarLoop]: Abstraction has 758 states and 1805 transitions. [2021-11-19 13:43:56,050 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,050 INFO L276 IsEmpty]: Start isEmpty. Operand 758 states and 1805 transitions. [2021-11-19 13:43:56,051 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:56,051 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:56,051 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:56,052 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable84 [2021-11-19 13:43:56,052 INFO L402 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:56,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:56,052 INFO L85 PathProgramCache]: Analyzing trace with hash 32532900, now seen corresponding path program 86 times [2021-11-19 13:43:56,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:56,053 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199538813] [2021-11-19 13:43:56,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:56,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:56,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:56,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:56,237 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:56,238 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199538813] [2021-11-19 13:43:56,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199538813] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:56,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:56,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:56,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1630493160] [2021-11-19 13:43:56,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:56,239 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:56,239 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:56,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:56,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:56,240 INFO L87 Difference]: Start difference. First operand 758 states and 1805 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:56,488 INFO L93 Difference]: Finished difference Result 1022 states and 2377 transitions. [2021-11-19 13:43:56,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:43:56,488 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:56,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:56,489 INFO L225 Difference]: With dead ends: 1022 [2021-11-19 13:43:56,489 INFO L226 Difference]: Without dead ends: 734 [2021-11-19 13:43:56,490 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:56,490 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 87 mSDsluCounter, 223 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 69 SdHoareTripleChecker+Invalid, 463 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:56,490 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 69 Invalid, 463 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:56,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 734 states. [2021-11-19 13:43:56,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 734 to 650. [2021-11-19 13:43:56,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 2.3713405238828966) internal successors, (1539), 649 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1539 transitions. [2021-11-19 13:43:56,499 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1539 transitions. Word has length 43 [2021-11-19 13:43:56,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:56,500 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 1539 transitions. [2021-11-19 13:43:56,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,500 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1539 transitions. [2021-11-19 13:43:56,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:56,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:56,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:56,501 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85 [2021-11-19 13:43:56,501 INFO L402 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:56,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:56,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1582684542, now seen corresponding path program 87 times [2021-11-19 13:43:56,502 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:56,502 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604565259] [2021-11-19 13:43:56,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:56,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:56,595 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:56,595 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604565259] [2021-11-19 13:43:56,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604565259] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:56,596 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:56,596 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:56,596 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709194376] [2021-11-19 13:43:56,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:56,597 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:56,597 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:56,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:56,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:56,598 INFO L87 Difference]: Start difference. First operand 650 states and 1539 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:56,804 INFO L93 Difference]: Finished difference Result 850 states and 1959 transitions. [2021-11-19 13:43:56,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:56,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:56,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:56,805 INFO L225 Difference]: With dead ends: 850 [2021-11-19 13:43:56,805 INFO L226 Difference]: Without dead ends: 794 [2021-11-19 13:43:56,806 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:56,806 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 108 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 364 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:56,810 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 66 Invalid, 381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 364 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:56,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-19 13:43:56,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 650. [2021-11-19 13:43:56,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 650 states, 649 states have (on average 2.3682588597842833) internal successors, (1537), 649 states have internal predecessors, (1537), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 650 states to 650 states and 1537 transitions. [2021-11-19 13:43:56,818 INFO L78 Accepts]: Start accepts. Automaton has 650 states and 1537 transitions. Word has length 43 [2021-11-19 13:43:56,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:56,818 INFO L470 AbstractCegarLoop]: Abstraction has 650 states and 1537 transitions. [2021-11-19 13:43:56,819 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:56,819 INFO L276 IsEmpty]: Start isEmpty. Operand 650 states and 1537 transitions. [2021-11-19 13:43:56,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:56,819 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:56,819 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:56,820 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable86 [2021-11-19 13:43:56,820 INFO L402 AbstractCegarLoop]: === Iteration 88 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:56,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:56,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1695956944, now seen corresponding path program 88 times [2021-11-19 13:43:56,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:56,820 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535641109] [2021-11-19 13:43:56,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:56,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:56,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:56,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:56,947 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:56,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535641109] [2021-11-19 13:43:56,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535641109] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:56,948 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:56,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:43:56,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878938489] [2021-11-19 13:43:56,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:56,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:43:56,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:56,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:43:56,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:56,949 INFO L87 Difference]: Start difference. First operand 650 states and 1537 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:57,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:57,161 INFO L93 Difference]: Finished difference Result 782 states and 1833 transitions. [2021-11-19 13:43:57,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:57,162 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:57,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:57,163 INFO L225 Difference]: With dead ends: 782 [2021-11-19 13:43:57,163 INFO L226 Difference]: Without dead ends: 732 [2021-11-19 13:43:57,163 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:43:57,163 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 46 mSDsluCounter, 231 mSDsCounter, 0 mSdLazyCounter, 446 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 462 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:57,164 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 87 Invalid, 462 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 446 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:57,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 732 states. [2021-11-19 13:43:57,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 732 to 698. [2021-11-19 13:43:57,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 698 states, 697 states have (on average 2.3687230989956958) internal successors, (1651), 697 states have internal predecessors, (1651), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 698 states to 698 states and 1651 transitions. [2021-11-19 13:43:57,172 INFO L78 Accepts]: Start accepts. Automaton has 698 states and 1651 transitions. Word has length 43 [2021-11-19 13:43:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:57,173 INFO L470 AbstractCegarLoop]: Abstraction has 698 states and 1651 transitions. [2021-11-19 13:43:57,173 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:57,173 INFO L276 IsEmpty]: Start isEmpty. Operand 698 states and 1651 transitions. [2021-11-19 13:43:57,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:57,174 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:57,174 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:57,174 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable87 [2021-11-19 13:43:57,174 INFO L402 AbstractCegarLoop]: === Iteration 89 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:57,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:57,174 INFO L85 PathProgramCache]: Analyzing trace with hash 579409790, now seen corresponding path program 89 times [2021-11-19 13:43:57,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:57,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853855873] [2021-11-19 13:43:57,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:57,175 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:57,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:57,400 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:57,401 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:57,401 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853855873] [2021-11-19 13:43:57,401 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853855873] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:57,401 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:57,402 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:57,402 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281169982] [2021-11-19 13:43:57,402 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:57,402 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:57,402 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:57,403 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:57,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:57,403 INFO L87 Difference]: Start difference. First operand 698 states and 1651 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:57,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:57,701 INFO L93 Difference]: Finished difference Result 774 states and 1821 transitions. [2021-11-19 13:43:57,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-19 13:43:57,701 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:57,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:57,703 INFO L225 Difference]: With dead ends: 774 [2021-11-19 13:43:57,703 INFO L226 Difference]: Without dead ends: 738 [2021-11-19 13:43:57,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:43:57,704 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 94 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 335 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:57,704 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [94 Valid, 46 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 335 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:57,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 738 states. [2021-11-19 13:43:57,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 738 to 690. [2021-11-19 13:43:57,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 2.3613933236574747) internal successors, (1627), 689 states have internal predecessors, (1627), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:57,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1627 transitions. [2021-11-19 13:43:57,716 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1627 transitions. Word has length 43 [2021-11-19 13:43:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:57,717 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1627 transitions. [2021-11-19 13:43:57,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:57,717 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1627 transitions. [2021-11-19 13:43:57,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:57,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:57,718 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:57,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable88 [2021-11-19 13:43:57,719 INFO L402 AbstractCegarLoop]: === Iteration 90 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:57,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:57,719 INFO L85 PathProgramCache]: Analyzing trace with hash -1724872480, now seen corresponding path program 90 times [2021-11-19 13:43:57,720 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:57,720 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605706856] [2021-11-19 13:43:57,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:57,720 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:57,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:57,922 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:57,922 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:57,922 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [605706856] [2021-11-19 13:43:57,922 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [605706856] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:57,922 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:57,922 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:43:57,922 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [628251503] [2021-11-19 13:43:57,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:57,923 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:43:57,923 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:57,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:43:57,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:43:57,923 INFO L87 Difference]: Start difference. First operand 690 states and 1627 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:58,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:58,248 INFO L93 Difference]: Finished difference Result 762 states and 1775 transitions. [2021-11-19 13:43:58,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:58,249 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:58,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:58,250 INFO L225 Difference]: With dead ends: 762 [2021-11-19 13:43:58,250 INFO L226 Difference]: Without dead ends: 696 [2021-11-19 13:43:58,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:58,251 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:58,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 85 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:58,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2021-11-19 13:43:58,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 690. [2021-11-19 13:43:58,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 690 states, 689 states have (on average 2.3381712626995648) internal successors, (1611), 689 states have internal predecessors, (1611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:58,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 690 states to 690 states and 1611 transitions. [2021-11-19 13:43:58,265 INFO L78 Accepts]: Start accepts. Automaton has 690 states and 1611 transitions. Word has length 43 [2021-11-19 13:43:58,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:58,265 INFO L470 AbstractCegarLoop]: Abstraction has 690 states and 1611 transitions. [2021-11-19 13:43:58,266 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:58,266 INFO L276 IsEmpty]: Start isEmpty. Operand 690 states and 1611 transitions. [2021-11-19 13:43:58,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:58,267 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:58,267 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:58,268 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable89 [2021-11-19 13:43:58,268 INFO L402 AbstractCegarLoop]: === Iteration 91 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:58,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:58,268 INFO L85 PathProgramCache]: Analyzing trace with hash 1619109246, now seen corresponding path program 91 times [2021-11-19 13:43:58,269 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:58,269 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95597875] [2021-11-19 13:43:58,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:58,269 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:58,440 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:58,440 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:58,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95597875] [2021-11-19 13:43:58,441 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95597875] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:58,441 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:58,441 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:58,441 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781652320] [2021-11-19 13:43:58,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:58,442 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:58,442 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:58,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:58,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:58,443 INFO L87 Difference]: Start difference. First operand 690 states and 1611 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:58,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:58,756 INFO L93 Difference]: Finished difference Result 736 states and 1700 transitions. [2021-11-19 13:43:58,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:58,756 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:58,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:58,757 INFO L225 Difference]: With dead ends: 736 [2021-11-19 13:43:58,757 INFO L226 Difference]: Without dead ends: 658 [2021-11-19 13:43:58,757 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:58,758 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 27 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 492 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 499 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:58,758 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 93 Invalid, 499 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 492 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:43:58,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2021-11-19 13:43:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2021-11-19 13:43:58,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 657 states have (on average 2.3181126331811264) internal successors, (1523), 657 states have internal predecessors, (1523), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:58,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1523 transitions. [2021-11-19 13:43:58,770 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1523 transitions. Word has length 43 [2021-11-19 13:43:58,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:58,771 INFO L470 AbstractCegarLoop]: Abstraction has 658 states and 1523 transitions. [2021-11-19 13:43:58,771 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:58,771 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1523 transitions. [2021-11-19 13:43:58,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:58,772 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:58,773 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:58,773 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable90 [2021-11-19 13:43:58,773 INFO L402 AbstractCegarLoop]: === Iteration 92 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:58,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:58,774 INFO L85 PathProgramCache]: Analyzing trace with hash 1024389656, now seen corresponding path program 92 times [2021-11-19 13:43:58,774 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:58,774 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006838284] [2021-11-19 13:43:58,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:58,774 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:58,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:58,896 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:58,897 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006838284] [2021-11-19 13:43:58,897 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006838284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:58,897 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:58,897 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-19 13:43:58,897 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781735745] [2021-11-19 13:43:58,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:58,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 13:43:58,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:58,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 13:43:58,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:58,899 INFO L87 Difference]: Start difference. First operand 658 states and 1523 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:59,046 INFO L93 Difference]: Finished difference Result 666 states and 1535 transitions. [2021-11-19 13:43:59,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:43:59,047 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:59,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:59,048 INFO L225 Difference]: With dead ends: 666 [2021-11-19 13:43:59,048 INFO L226 Difference]: Without dead ends: 612 [2021-11-19 13:43:59,049 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-19 13:43:59,049 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 11 mSDsluCounter, 92 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 29 SdHoareTripleChecker+Invalid, 203 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:59,049 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 29 Invalid, 203 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:43:59,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 612 states. [2021-11-19 13:43:59,059 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 612 to 612. [2021-11-19 13:43:59,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 611 states have (on average 2.3355155482815055) internal successors, (1427), 611 states have internal predecessors, (1427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 1427 transitions. [2021-11-19 13:43:59,062 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 1427 transitions. Word has length 43 [2021-11-19 13:43:59,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:59,062 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 1427 transitions. [2021-11-19 13:43:59,062 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,062 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 1427 transitions. [2021-11-19 13:43:59,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:59,063 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:59,063 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:59,063 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable91 [2021-11-19 13:43:59,064 INFO L402 AbstractCegarLoop]: === Iteration 93 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:59,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:59,064 INFO L85 PathProgramCache]: Analyzing trace with hash 458229848, now seen corresponding path program 93 times [2021-11-19 13:43:59,064 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:59,064 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303664213] [2021-11-19 13:43:59,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:59,064 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:59,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:59,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:59,221 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:59,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303664213] [2021-11-19 13:43:59,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303664213] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:59,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:59,222 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:43:59,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241531159] [2021-11-19 13:43:59,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:59,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:43:59,223 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:59,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:43:59,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:59,223 INFO L87 Difference]: Start difference. First operand 612 states and 1427 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:59,449 INFO L93 Difference]: Finished difference Result 674 states and 1556 transitions. [2021-11-19 13:43:59,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:43:59,449 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:59,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:59,450 INFO L225 Difference]: With dead ends: 674 [2021-11-19 13:43:59,450 INFO L226 Difference]: Without dead ends: 622 [2021-11-19 13:43:59,450 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:43:59,451 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 52 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 435 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:59,451 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 68 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 435 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 622 states. [2021-11-19 13:43:59,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 622 to 602. [2021-11-19 13:43:59,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.3327787021630617) internal successors, (1402), 601 states have internal predecessors, (1402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1402 transitions. [2021-11-19 13:43:59,459 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1402 transitions. Word has length 43 [2021-11-19 13:43:59,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:59,459 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1402 transitions. [2021-11-19 13:43:59,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,459 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1402 transitions. [2021-11-19 13:43:59,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:59,460 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:59,460 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:59,460 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable92 [2021-11-19 13:43:59,460 INFO L402 AbstractCegarLoop]: === Iteration 94 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:59,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:59,461 INFO L85 PathProgramCache]: Analyzing trace with hash -1674643116, now seen corresponding path program 94 times [2021-11-19 13:43:59,461 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:59,461 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462674250] [2021-11-19 13:43:59,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:59,461 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:59,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:43:59,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:43:59,608 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:43:59,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462674250] [2021-11-19 13:43:59,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462674250] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:43:59,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:43:59,609 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:43:59,609 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631011224] [2021-11-19 13:43:59,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:43:59,609 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:43:59,609 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:43:59,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:43:59,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:59,610 INFO L87 Difference]: Start difference. First operand 602 states and 1402 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:43:59,809 INFO L93 Difference]: Finished difference Result 668 states and 1537 transitions. [2021-11-19 13:43:59,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:43:59,810 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:43:59,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:43:59,811 INFO L225 Difference]: With dead ends: 668 [2021-11-19 13:43:59,811 INFO L226 Difference]: Without dead ends: 602 [2021-11-19 13:43:59,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:43:59,811 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 37 mSDsluCounter, 207 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:43:59,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 72 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:43:59,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 602 states. [2021-11-19 13:43:59,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 602 to 602. [2021-11-19 13:43:59,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 602 states, 601 states have (on average 2.3194675540765393) internal successors, (1394), 601 states have internal predecessors, (1394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 602 states to 602 states and 1394 transitions. [2021-11-19 13:43:59,820 INFO L78 Accepts]: Start accepts. Automaton has 602 states and 1394 transitions. Word has length 43 [2021-11-19 13:43:59,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:43:59,820 INFO L470 AbstractCegarLoop]: Abstraction has 602 states and 1394 transitions. [2021-11-19 13:43:59,820 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:43:59,820 INFO L276 IsEmpty]: Start isEmpty. Operand 602 states and 1394 transitions. [2021-11-19 13:43:59,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:43:59,821 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:43:59,821 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:43:59,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable93 [2021-11-19 13:43:59,821 INFO L402 AbstractCegarLoop]: === Iteration 95 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:43:59,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:43:59,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1477969316, now seen corresponding path program 95 times [2021-11-19 13:43:59,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:43:59,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693930038] [2021-11-19 13:43:59,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:43:59,822 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:43:59,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:00,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:00,007 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:00,007 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693930038] [2021-11-19 13:44:00,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693930038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:00,008 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:00,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:44:00,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591875906] [2021-11-19 13:44:00,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:00,008 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:44:00,008 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:00,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:44:00,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:00,009 INFO L87 Difference]: Start difference. First operand 602 states and 1394 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:00,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:00,326 INFO L93 Difference]: Finished difference Result 656 states and 1505 transitions. [2021-11-19 13:44:00,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:00,326 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:00,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:00,327 INFO L225 Difference]: With dead ends: 656 [2021-11-19 13:44:00,327 INFO L226 Difference]: Without dead ends: 604 [2021-11-19 13:44:00,328 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:00,328 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 38 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 80 SdHoareTripleChecker+Invalid, 553 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:00,328 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [38 Valid, 80 Invalid, 553 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:44:00,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 604 states. [2021-11-19 13:44:00,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 604 to 604. [2021-11-19 13:44:00,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 603 states have (on average 2.316749585406302) internal successors, (1397), 603 states have internal predecessors, (1397), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:00,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 1397 transitions. [2021-11-19 13:44:00,336 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 1397 transitions. Word has length 43 [2021-11-19 13:44:00,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:00,337 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 1397 transitions. [2021-11-19 13:44:00,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:00,337 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 1397 transitions. [2021-11-19 13:44:00,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:00,338 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:00,338 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:00,338 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable94 [2021-11-19 13:44:00,338 INFO L402 AbstractCegarLoop]: === Iteration 96 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:00,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:00,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1364696914, now seen corresponding path program 96 times [2021-11-19 13:44:00,338 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:00,339 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951827481] [2021-11-19 13:44:00,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:00,339 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:00,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:00,590 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:00,591 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:00,591 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951827481] [2021-11-19 13:44:00,591 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951827481] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:00,591 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:00,591 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:44:00,591 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904823427] [2021-11-19 13:44:00,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:00,592 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:44:00,592 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:00,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:44:00,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:00,592 INFO L87 Difference]: Start difference. First operand 604 states and 1397 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:01,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:01,022 INFO L93 Difference]: Finished difference Result 728 states and 1663 transitions. [2021-11-19 13:44:01,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:44:01,023 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:01,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:01,024 INFO L225 Difference]: With dead ends: 728 [2021-11-19 13:44:01,024 INFO L226 Difference]: Without dead ends: 712 [2021-11-19 13:44:01,024 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2021-11-19 13:44:01,024 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 114 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 571 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:01,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 102 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 571 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 13:44:01,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2021-11-19 13:44:01,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 630. [2021-11-19 13:44:01,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 630 states, 629 states have (on average 2.3116057233704295) internal successors, (1454), 629 states have internal predecessors, (1454), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:01,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 630 states to 630 states and 1454 transitions. [2021-11-19 13:44:01,034 INFO L78 Accepts]: Start accepts. Automaton has 630 states and 1454 transitions. Word has length 43 [2021-11-19 13:44:01,034 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:01,034 INFO L470 AbstractCegarLoop]: Abstraction has 630 states and 1454 transitions. [2021-11-19 13:44:01,034 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:01,035 INFO L276 IsEmpty]: Start isEmpty. Operand 630 states and 1454 transitions. [2021-11-19 13:44:01,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:01,036 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:01,036 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:01,036 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable95 [2021-11-19 13:44:01,036 INFO L402 AbstractCegarLoop]: === Iteration 97 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:01,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:01,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1679222610, now seen corresponding path program 97 times [2021-11-19 13:44:01,036 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:01,036 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821748353] [2021-11-19 13:44:01,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:01,037 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:01,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:01,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:01,244 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:01,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821748353] [2021-11-19 13:44:01,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821748353] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:01,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:01,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:44:01,245 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87759749] [2021-11-19 13:44:01,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:01,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:44:01,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:01,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:44:01,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:01,245 INFO L87 Difference]: Start difference. First operand 630 states and 1454 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:01,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:01,475 INFO L93 Difference]: Finished difference Result 646 states and 1482 transitions. [2021-11-19 13:44:01,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:44:01,476 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:01,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:01,477 INFO L225 Difference]: With dead ends: 646 [2021-11-19 13:44:01,477 INFO L226 Difference]: Without dead ends: 628 [2021-11-19 13:44:01,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:01,478 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 485 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:01,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 74 Invalid, 485 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:01,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 628 states. [2021-11-19 13:44:01,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 628 to 628. [2021-11-19 13:44:01,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 627 states have (on average 2.311004784688995) internal successors, (1449), 627 states have internal predecessors, (1449), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:01,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 1449 transitions. [2021-11-19 13:44:01,488 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 1449 transitions. Word has length 43 [2021-11-19 13:44:01,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:01,488 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 1449 transitions. [2021-11-19 13:44:01,488 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:01,488 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 1449 transitions. [2021-11-19 13:44:01,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:01,489 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:01,489 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:01,489 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable96 [2021-11-19 13:44:01,489 INFO L402 AbstractCegarLoop]: === Iteration 98 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:01,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:01,490 INFO L85 PathProgramCache]: Analyzing trace with hash -340377952, now seen corresponding path program 98 times [2021-11-19 13:44:01,490 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:01,490 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90709960] [2021-11-19 13:44:01,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:01,490 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:01,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:01,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:01,691 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:01,691 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90709960] [2021-11-19 13:44:01,691 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90709960] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:01,691 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:01,692 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:44:01,692 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589189635] [2021-11-19 13:44:01,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:01,692 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:44:01,693 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:01,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:44:01,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:01,693 INFO L87 Difference]: Start difference. First operand 628 states and 1449 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:01,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:01,999 INFO L93 Difference]: Finished difference Result 644 states and 1475 transitions. [2021-11-19 13:44:01,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:44:02,000 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:02,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:02,001 INFO L225 Difference]: With dead ends: 644 [2021-11-19 13:44:02,001 INFO L226 Difference]: Without dead ends: 600 [2021-11-19 13:44:02,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:02,002 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 50 mSDsluCounter, 294 mSDsCounter, 0 mSdLazyCounter, 584 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 106 SdHoareTripleChecker+Invalid, 602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:02,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 106 Invalid, 602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 584 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:44:02,003 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 600 states. [2021-11-19 13:44:02,008 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 600 to 584. [2021-11-19 13:44:02,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 2.3207547169811322) internal successors, (1353), 583 states have internal predecessors, (1353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1353 transitions. [2021-11-19 13:44:02,010 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1353 transitions. Word has length 43 [2021-11-19 13:44:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:02,011 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1353 transitions. [2021-11-19 13:44:02,011 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1353 transitions. [2021-11-19 13:44:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:02,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:02,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:02,012 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable97 [2021-11-19 13:44:02,012 INFO L402 AbstractCegarLoop]: === Iteration 99 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:02,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:02,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1151176538, now seen corresponding path program 99 times [2021-11-19 13:44:02,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:02,013 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744351123] [2021-11-19 13:44:02,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:02,013 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:02,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:02,235 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:02,235 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744351123] [2021-11-19 13:44:02,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744351123] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:02,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:02,236 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:44:02,236 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335351861] [2021-11-19 13:44:02,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:02,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:44:02,237 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:02,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:44:02,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:02,237 INFO L87 Difference]: Start difference. First operand 584 states and 1353 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,482 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:02,482 INFO L93 Difference]: Finished difference Result 618 states and 1416 transitions. [2021-11-19 13:44:02,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:02,483 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:02,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:02,484 INFO L225 Difference]: With dead ends: 618 [2021-11-19 13:44:02,484 INFO L226 Difference]: Without dead ends: 584 [2021-11-19 13:44:02,484 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:02,485 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 31 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:02,486 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 84 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:02,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2021-11-19 13:44:02,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2021-11-19 13:44:02,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 583 states have (on average 2.313893653516295) internal successors, (1349), 583 states have internal predecessors, (1349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 1349 transitions. [2021-11-19 13:44:02,499 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 1349 transitions. Word has length 43 [2021-11-19 13:44:02,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:02,499 INFO L470 AbstractCegarLoop]: Abstraction has 584 states and 1349 transitions. [2021-11-19 13:44:02,500 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,500 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 1349 transitions. [2021-11-19 13:44:02,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:02,501 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:02,501 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:02,502 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable98 [2021-11-19 13:44:02,502 INFO L402 AbstractCegarLoop]: === Iteration 100 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:02,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:02,502 INFO L85 PathProgramCache]: Analyzing trace with hash -1167346594, now seen corresponding path program 100 times [2021-11-19 13:44:02,503 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:02,503 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798455118] [2021-11-19 13:44:02,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:02,503 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:02,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:02,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:02,721 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:02,722 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798455118] [2021-11-19 13:44:02,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798455118] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:02,722 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:02,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:44:02,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721290744] [2021-11-19 13:44:02,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:02,722 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:44:02,722 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:02,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:44:02,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:02,723 INFO L87 Difference]: Start difference. First operand 584 states and 1349 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:02,987 INFO L93 Difference]: Finished difference Result 620 states and 1419 transitions. [2021-11-19 13:44:02,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:02,988 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:02,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:02,989 INFO L225 Difference]: With dead ends: 620 [2021-11-19 13:44:02,989 INFO L226 Difference]: Without dead ends: 580 [2021-11-19 13:44:02,989 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:02,989 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 47 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:02,989 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [47 Valid, 88 Invalid, 460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:02,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-11-19 13:44:02,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 580. [2021-11-19 13:44:02,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 579 states have (on average 2.305699481865285) internal successors, (1335), 579 states have internal predecessors, (1335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 1335 transitions. [2021-11-19 13:44:02,998 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 1335 transitions. Word has length 43 [2021-11-19 13:44:02,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:02,998 INFO L470 AbstractCegarLoop]: Abstraction has 580 states and 1335 transitions. [2021-11-19 13:44:02,998 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:02,998 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 1335 transitions. [2021-11-19 13:44:02,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:02,999 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:02,999 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:02,999 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable99 [2021-11-19 13:44:02,999 INFO L402 AbstractCegarLoop]: === Iteration 101 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:02,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:03,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1153105732, now seen corresponding path program 101 times [2021-11-19 13:44:03,000 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:03,000 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450006834] [2021-11-19 13:44:03,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:03,000 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:03,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:03,170 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:03,170 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450006834] [2021-11-19 13:44:03,171 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450006834] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:03,171 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:03,171 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:44:03,171 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736926427] [2021-11-19 13:44:03,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:03,171 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:44:03,172 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:03,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:44:03,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:03,172 INFO L87 Difference]: Start difference. First operand 580 states and 1335 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:03,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:03,446 INFO L93 Difference]: Finished difference Result 626 states and 1424 transitions. [2021-11-19 13:44:03,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:03,446 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:03,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:03,447 INFO L225 Difference]: With dead ends: 626 [2021-11-19 13:44:03,447 INFO L226 Difference]: Without dead ends: 560 [2021-11-19 13:44:03,448 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:03,448 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 39 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 508 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 519 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 508 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:03,448 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 103 Invalid, 519 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 508 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:44:03,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 560 states. [2021-11-19 13:44:03,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 560 to 560. [2021-11-19 13:44:03,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 560 states, 559 states have (on average 2.2772808586762077) internal successors, (1273), 559 states have internal predecessors, (1273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:03,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 560 states to 560 states and 1273 transitions. [2021-11-19 13:44:03,455 INFO L78 Accepts]: Start accepts. Automaton has 560 states and 1273 transitions. Word has length 43 [2021-11-19 13:44:03,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:03,455 INFO L470 AbstractCegarLoop]: Abstraction has 560 states and 1273 transitions. [2021-11-19 13:44:03,455 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:03,456 INFO L276 IsEmpty]: Start isEmpty. Operand 560 states and 1273 transitions. [2021-11-19 13:44:03,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:03,456 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:03,456 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:03,456 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable100 [2021-11-19 13:44:03,457 INFO L402 AbstractCegarLoop]: === Iteration 102 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:03,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:03,457 INFO L85 PathProgramCache]: Analyzing trace with hash -2104091302, now seen corresponding path program 102 times [2021-11-19 13:44:03,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:03,457 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010481063] [2021-11-19 13:44:03,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:03,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:03,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:03,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:03,659 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:03,659 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010481063] [2021-11-19 13:44:03,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010481063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:03,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:03,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:44:03,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940374522] [2021-11-19 13:44:03,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:03,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:44:03,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:03,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:44:03,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:03,660 INFO L87 Difference]: Start difference. First operand 560 states and 1273 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:03,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:03,858 INFO L93 Difference]: Finished difference Result 590 states and 1330 transitions. [2021-11-19 13:44:03,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:03,858 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:03,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:03,859 INFO L225 Difference]: With dead ends: 590 [2021-11-19 13:44:03,859 INFO L226 Difference]: Without dead ends: 512 [2021-11-19 13:44:03,860 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:03,860 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 36 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 349 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 72 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 349 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:03,860 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 72 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 349 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:03,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-11-19 13:44:03,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 512. [2021-11-19 13:44:03,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 512 states, 511 states have (on average 2.2407045009784734) internal successors, (1145), 511 states have internal predecessors, (1145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:03,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 512 states to 512 states and 1145 transitions. [2021-11-19 13:44:03,870 INFO L78 Accepts]: Start accepts. Automaton has 512 states and 1145 transitions. Word has length 43 [2021-11-19 13:44:03,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:03,870 INFO L470 AbstractCegarLoop]: Abstraction has 512 states and 1145 transitions. [2021-11-19 13:44:03,871 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:03,871 INFO L276 IsEmpty]: Start isEmpty. Operand 512 states and 1145 transitions. [2021-11-19 13:44:03,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:03,872 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:03,872 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:03,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable101 [2021-11-19 13:44:03,873 INFO L402 AbstractCegarLoop]: === Iteration 103 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:03,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:03,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1850479820, now seen corresponding path program 103 times [2021-11-19 13:44:03,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:03,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49053936] [2021-11-19 13:44:03,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:03,874 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:03,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:03,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:03,988 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:03,988 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49053936] [2021-11-19 13:44:03,988 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49053936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:03,988 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:03,988 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:44:03,989 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006984481] [2021-11-19 13:44:03,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:03,989 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 13:44:03,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:03,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 13:44:03,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:44:03,990 INFO L87 Difference]: Start difference. First operand 512 states and 1145 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:04,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:04,147 INFO L93 Difference]: Finished difference Result 574 states and 1261 transitions. [2021-11-19 13:44:04,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-19 13:44:04,148 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:04,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:04,148 INFO L225 Difference]: With dead ends: 574 [2021-11-19 13:44:04,149 INFO L226 Difference]: Without dead ends: 522 [2021-11-19 13:44:04,149 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-19 13:44:04,149 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 97 mSDsluCounter, 94 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:04,149 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [97 Valid, 33 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:04,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2021-11-19 13:44:04,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 510. [2021-11-19 13:44:04,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 509 states have (on average 2.239685658153242) internal successors, (1140), 509 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:04,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 1140 transitions. [2021-11-19 13:44:04,158 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 1140 transitions. Word has length 43 [2021-11-19 13:44:04,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:04,159 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 1140 transitions. [2021-11-19 13:44:04,159 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:04,159 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 1140 transitions. [2021-11-19 13:44:04,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:04,159 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:04,160 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:04,160 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable102 [2021-11-19 13:44:04,160 INFO L402 AbstractCegarLoop]: === Iteration 104 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:04,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:04,160 INFO L85 PathProgramCache]: Analyzing trace with hash -1963752222, now seen corresponding path program 104 times [2021-11-19 13:44:04,160 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:04,160 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098051965] [2021-11-19 13:44:04,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:04,161 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:04,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:04,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:04,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:04,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098051965] [2021-11-19 13:44:04,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098051965] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:04,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:04,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:44:04,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301593021] [2021-11-19 13:44:04,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:04,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:44:04,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:04,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:44:04,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:04,423 INFO L87 Difference]: Start difference. First operand 510 states and 1140 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:04,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:04,711 INFO L93 Difference]: Finished difference Result 534 states and 1184 transitions. [2021-11-19 13:44:04,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:04,711 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:04,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:04,712 INFO L225 Difference]: With dead ends: 534 [2021-11-19 13:44:04,712 INFO L226 Difference]: Without dead ends: 508 [2021-11-19 13:44:04,712 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:44:04,713 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 71 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 444 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 444 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:04,713 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 63 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 444 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:44:04,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-19 13:44:04,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 508. [2021-11-19 13:44:04,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 507 states have (on average 2.2386587771203157) internal successors, (1135), 507 states have internal predecessors, (1135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:04,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 1135 transitions. [2021-11-19 13:44:04,720 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 1135 transitions. Word has length 43 [2021-11-19 13:44:04,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:04,720 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 1135 transitions. [2021-11-19 13:44:04,720 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:04,720 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 1135 transitions. [2021-11-19 13:44:04,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:04,721 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:04,721 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:04,721 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable103 [2021-11-19 13:44:04,721 INFO L402 AbstractCegarLoop]: === Iteration 105 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:04,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:04,721 INFO L85 PathProgramCache]: Analyzing trace with hash 311614512, now seen corresponding path program 105 times [2021-11-19 13:44:04,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:04,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208178058] [2021-11-19 13:44:04,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:04,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:04,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:04,959 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:04,959 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208178058] [2021-11-19 13:44:04,959 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208178058] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:04,960 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:04,960 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:44:04,960 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803470061] [2021-11-19 13:44:04,960 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:04,960 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:44:04,960 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:04,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:44:04,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:04,961 INFO L87 Difference]: Start difference. First operand 508 states and 1135 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:05,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:05,338 INFO L93 Difference]: Finished difference Result 442 states and 982 transitions. [2021-11-19 13:44:05,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:05,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:05,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:05,340 INFO L225 Difference]: With dead ends: 442 [2021-11-19 13:44:05,340 INFO L226 Difference]: Without dead ends: 314 [2021-11-19 13:44:05,340 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:05,341 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 43 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 534 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:05,341 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 75 Invalid, 534 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:44:05,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-19 13:44:05,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 314. [2021-11-19 13:44:05,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.2651757188498403) internal successors, (709), 313 states have internal predecessors, (709), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:05,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 709 transitions. [2021-11-19 13:44:05,347 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 709 transitions. Word has length 43 [2021-11-19 13:44:05,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:05,347 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 709 transitions. [2021-11-19 13:44:05,348 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:05,348 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 709 transitions. [2021-11-19 13:44:05,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:05,348 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:05,349 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:05,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable104 [2021-11-19 13:44:05,349 INFO L402 AbstractCegarLoop]: === Iteration 106 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:05,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:05,349 INFO L85 PathProgramCache]: Analyzing trace with hash -578052944, now seen corresponding path program 106 times [2021-11-19 13:44:05,349 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:05,350 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1559879228] [2021-11-19 13:44:05,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:05,350 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:05,574 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:05,574 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:05,574 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1559879228] [2021-11-19 13:44:05,574 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1559879228] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:05,574 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:05,574 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:44:05,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282730532] [2021-11-19 13:44:05,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:05,575 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:44:05,575 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:05,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:44:05,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:05,575 INFO L87 Difference]: Start difference. First operand 314 states and 709 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:05,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:05,768 INFO L93 Difference]: Finished difference Result 350 states and 781 transitions. [2021-11-19 13:44:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:05,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:05,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:05,769 INFO L225 Difference]: With dead ends: 350 [2021-11-19 13:44:05,769 INFO L226 Difference]: Without dead ends: 324 [2021-11-19 13:44:05,769 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:05,769 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 12 mSDsluCounter, 242 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 79 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:05,769 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 79 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:05,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2021-11-19 13:44:05,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 320. [2021-11-19 13:44:05,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 319 states have (on average 2.269592476489028) internal successors, (724), 319 states have internal predecessors, (724), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:05,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 724 transitions. [2021-11-19 13:44:05,773 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 724 transitions. Word has length 43 [2021-11-19 13:44:05,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:05,774 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 724 transitions. [2021-11-19 13:44:05,774 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:05,774 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 724 transitions. [2021-11-19 13:44:05,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:05,774 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:05,774 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:05,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable105 [2021-11-19 13:44:05,775 INFO L402 AbstractCegarLoop]: === Iteration 107 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:05,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:05,775 INFO L85 PathProgramCache]: Analyzing trace with hash -1611466512, now seen corresponding path program 107 times [2021-11-19 13:44:05,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:05,775 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878623984] [2021-11-19 13:44:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:05,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:05,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:05,976 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:05,976 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878623984] [2021-11-19 13:44:05,977 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878623984] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:05,977 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:05,977 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:44:05,977 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446535442] [2021-11-19 13:44:05,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:05,977 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:44:05,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:05,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:44:05,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:05,978 INFO L87 Difference]: Start difference. First operand 320 states and 724 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:06,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:06,163 INFO L93 Difference]: Finished difference Result 358 states and 791 transitions. [2021-11-19 13:44:06,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:06,164 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:06,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:06,164 INFO L225 Difference]: With dead ends: 358 [2021-11-19 13:44:06,164 INFO L226 Difference]: Without dead ends: 318 [2021-11-19 13:44:06,164 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:06,165 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 18 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:06,165 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 82 Invalid, 409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:06,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2021-11-19 13:44:06,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 314. [2021-11-19 13:44:06,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.2268370607028753) internal successors, (697), 313 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) [2021-11-19 13:44:06,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 697 transitions. [2021-11-19 13:44:06,171 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 697 transitions. Word has length 43 [2021-11-19 13:44:06,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:06,171 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 697 transitions. [2021-11-19 13:44:06,171 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:06,172 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 697 transitions. [2021-11-19 13:44:06,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:06,172 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:06,172 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:06,173 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable106 [2021-11-19 13:44:06,173 INFO L402 AbstractCegarLoop]: === Iteration 108 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:06,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:06,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1594386230, now seen corresponding path program 108 times [2021-11-19 13:44:06,174 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:06,174 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021929847] [2021-11-19 13:44:06,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:06,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:06,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:06,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:06,335 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:06,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021929847] [2021-11-19 13:44:06,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021929847] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:06,336 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:06,336 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:44:06,336 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346576462] [2021-11-19 13:44:06,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:06,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:44:06,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:06,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:44:06,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:06,337 INFO L87 Difference]: Start difference. First operand 314 states and 697 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:06,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:06,527 INFO L93 Difference]: Finished difference Result 352 states and 768 transitions. [2021-11-19 13:44:06,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:06,527 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:06,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:06,528 INFO L225 Difference]: With dead ends: 352 [2021-11-19 13:44:06,528 INFO L226 Difference]: Without dead ends: 326 [2021-11-19 13:44:06,528 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:06,528 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 31 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 437 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 448 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:06,528 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 81 Invalid, 448 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 437 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:06,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2021-11-19 13:44:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 314. [2021-11-19 13:44:06,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.2268370607028753) internal successors, (697), 313 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) [2021-11-19 13:44:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 697 transitions. [2021-11-19 13:44:06,532 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 697 transitions. Word has length 43 [2021-11-19 13:44:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:06,532 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 697 transitions. [2021-11-19 13:44:06,532 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:06,533 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 697 transitions. [2021-11-19 13:44:06,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:06,533 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:06,533 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:06,533 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable107 [2021-11-19 13:44:06,533 INFO L402 AbstractCegarLoop]: === Iteration 109 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:06,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:06,534 INFO L85 PathProgramCache]: Analyzing trace with hash 1667167498, now seen corresponding path program 109 times [2021-11-19 13:44:06,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:06,534 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [928014012] [2021-11-19 13:44:06,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:06,534 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:06,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:06,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:06,712 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:06,712 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [928014012] [2021-11-19 13:44:06,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [928014012] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:06,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:06,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:44:06,712 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921831242] [2021-11-19 13:44:06,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:06,713 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:44:06,713 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:06,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:44:06,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:06,714 INFO L87 Difference]: Start difference. First operand 314 states and 697 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:06,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:06,915 INFO L93 Difference]: Finished difference Result 354 states and 769 transitions. [2021-11-19 13:44:06,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:06,915 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:06,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:06,916 INFO L225 Difference]: With dead ends: 354 [2021-11-19 13:44:06,916 INFO L226 Difference]: Without dead ends: 322 [2021-11-19 13:44:06,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 3 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:06,916 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 432 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 78 SdHoareTripleChecker+Invalid, 445 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:06,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 78 Invalid, 445 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 432 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:06,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2021-11-19 13:44:06,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 314. [2021-11-19 13:44:06,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 313 states have (on average 2.220447284345048) internal successors, (695), 313 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) [2021-11-19 13:44:06,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 695 transitions. [2021-11-19 13:44:06,920 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 695 transitions. Word has length 43 [2021-11-19 13:44:06,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:06,920 INFO L470 AbstractCegarLoop]: Abstraction has 314 states and 695 transitions. [2021-11-19 13:44:06,920 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:06,920 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 695 transitions. [2021-11-19 13:44:06,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:06,921 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:06,921 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:06,921 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable108 [2021-11-19 13:44:06,921 INFO L402 AbstractCegarLoop]: === Iteration 110 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:06,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:06,921 INFO L85 PathProgramCache]: Analyzing trace with hash 1546070282, now seen corresponding path program 110 times [2021-11-19 13:44:06,922 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:06,922 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463492968] [2021-11-19 13:44:06,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:06,922 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:07,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:07,031 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:07,031 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463492968] [2021-11-19 13:44:07,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463492968] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:07,031 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:07,031 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:44:07,032 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734014276] [2021-11-19 13:44:07,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:07,032 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:44:07,032 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:07,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:44:07,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:07,033 INFO L87 Difference]: Start difference. First operand 314 states and 695 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:07,185 INFO L93 Difference]: Finished difference Result 348 states and 754 transitions. [2021-11-19 13:44:07,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:07,186 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:07,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:07,187 INFO L225 Difference]: With dead ends: 348 [2021-11-19 13:44:07,187 INFO L226 Difference]: Without dead ends: 302 [2021-11-19 13:44:07,187 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:07,187 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 69 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:07,187 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 52 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:44:07,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2021-11-19 13:44:07,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2021-11-19 13:44:07,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 301 states have (on average 2.1960132890365447) internal successors, (661), 301 states have internal predecessors, (661), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 661 transitions. [2021-11-19 13:44:07,192 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 661 transitions. Word has length 43 [2021-11-19 13:44:07,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:07,193 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 661 transitions. [2021-11-19 13:44:07,193 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,193 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 661 transitions. [2021-11-19 13:44:07,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:07,193 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:07,194 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:07,194 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable109 [2021-11-19 13:44:07,194 INFO L402 AbstractCegarLoop]: === Iteration 111 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:07,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:07,195 INFO L85 PathProgramCache]: Analyzing trace with hash 1612091384, now seen corresponding path program 111 times [2021-11-19 13:44:07,195 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:07,195 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449641999] [2021-11-19 13:44:07,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:07,196 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:07,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:07,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:07,422 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:07,422 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449641999] [2021-11-19 13:44:07,422 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449641999] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:07,422 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:07,422 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:44:07,422 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084843838] [2021-11-19 13:44:07,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:07,423 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:44:07,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:07,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:44:07,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:07,423 INFO L87 Difference]: Start difference. First operand 302 states and 661 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:07,638 INFO L93 Difference]: Finished difference Result 364 states and 776 transitions. [2021-11-19 13:44:07,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:07,639 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:07,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:07,639 INFO L225 Difference]: With dead ends: 364 [2021-11-19 13:44:07,639 INFO L226 Difference]: Without dead ends: 278 [2021-11-19 13:44:07,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:07,640 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 57 mSDsluCounter, 240 mSDsCounter, 0 mSdLazyCounter, 463 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:07,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 74 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 463 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:07,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2021-11-19 13:44:07,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 268. [2021-11-19 13:44:07,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 268 states, 267 states have (on average 2.1722846441947565) internal successors, (580), 267 states have internal predecessors, (580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 580 transitions. [2021-11-19 13:44:07,643 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 580 transitions. Word has length 43 [2021-11-19 13:44:07,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:07,643 INFO L470 AbstractCegarLoop]: Abstraction has 268 states and 580 transitions. [2021-11-19 13:44:07,643 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:07,643 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 580 transitions. [2021-11-19 13:44:07,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:07,644 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:07,644 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:07,644 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable110 [2021-11-19 13:44:07,644 INFO L402 AbstractCegarLoop]: === Iteration 112 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:07,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:07,644 INFO L85 PathProgramCache]: Analyzing trace with hash 578677816, now seen corresponding path program 112 times [2021-11-19 13:44:07,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:07,644 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861281952] [2021-11-19 13:44:07,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:07,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:07,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:07,891 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:07,891 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:07,891 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861281952] [2021-11-19 13:44:07,892 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861281952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:07,892 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:07,892 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-19 13:44:07,892 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088566995] [2021-11-19 13:44:07,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:07,892 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-19 13:44:07,892 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:07,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-19 13:44:07,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2021-11-19 13:44:07,893 INFO L87 Difference]: Start difference. First operand 268 states and 580 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,230 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:08,230 INFO L93 Difference]: Finished difference Result 306 states and 649 transitions. [2021-11-19 13:44:08,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:08,231 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:08,231 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:08,232 INFO L225 Difference]: With dead ends: 306 [2021-11-19 13:44:08,232 INFO L226 Difference]: Without dead ends: 262 [2021-11-19 13:44:08,232 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2021-11-19 13:44:08,232 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 31 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 488 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:08,232 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 70 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 488 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-19 13:44:08,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-19 13:44:08,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2021-11-19 13:44:08,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 2.159533073929961) internal successors, (555), 257 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 555 transitions. [2021-11-19 13:44:08,238 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 555 transitions. Word has length 43 [2021-11-19 13:44:08,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:08,238 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 555 transitions. [2021-11-19 13:44:08,238 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 11 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,238 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 555 transitions. [2021-11-19 13:44:08,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:08,239 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:08,239 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:08,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable111 [2021-11-19 13:44:08,239 INFO L402 AbstractCegarLoop]: === Iteration 113 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:08,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:08,240 INFO L85 PathProgramCache]: Analyzing trace with hash -904252676, now seen corresponding path program 113 times [2021-11-19 13:44:08,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:08,240 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911911577] [2021-11-19 13:44:08,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:08,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:08,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:08,403 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:08,403 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911911577] [2021-11-19 13:44:08,404 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911911577] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:08,404 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:08,404 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:44:08,404 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098835220] [2021-11-19 13:44:08,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:08,404 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:44:08,404 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:08,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:44:08,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:08,405 INFO L87 Difference]: Start difference. First operand 258 states and 555 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:08,626 INFO L93 Difference]: Finished difference Result 288 states and 610 transitions. [2021-11-19 13:44:08,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:44:08,627 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:08,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:08,627 INFO L225 Difference]: With dead ends: 288 [2021-11-19 13:44:08,627 INFO L226 Difference]: Without dead ends: 262 [2021-11-19 13:44:08,628 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:08,628 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:08,628 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 64 Invalid, 354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:08,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-11-19 13:44:08,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 258. [2021-11-19 13:44:08,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 257 states have (on average 2.159533073929961) internal successors, (555), 257 states have internal predecessors, (555), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 555 transitions. [2021-11-19 13:44:08,633 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 555 transitions. Word has length 43 [2021-11-19 13:44:08,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:08,633 INFO L470 AbstractCegarLoop]: Abstraction has 258 states and 555 transitions. [2021-11-19 13:44:08,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,633 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 555 transitions. [2021-11-19 13:44:08,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:08,634 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:08,634 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:08,634 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable112 [2021-11-19 13:44:08,634 INFO L402 AbstractCegarLoop]: === Iteration 114 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:08,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:08,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1937666244, now seen corresponding path program 114 times [2021-11-19 13:44:08,634 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:08,635 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591636654] [2021-11-19 13:44:08,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:08,635 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:08,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:08,774 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:08,774 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:08,774 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591636654] [2021-11-19 13:44:08,774 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591636654] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:08,774 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:08,775 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-19 13:44:08,775 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159016183] [2021-11-19 13:44:08,775 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:08,775 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-19 13:44:08,775 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:08,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-19 13:44:08,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:08,775 INFO L87 Difference]: Start difference. First operand 258 states and 555 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:08,917 INFO L93 Difference]: Finished difference Result 288 states and 608 transitions. [2021-11-19 13:44:08,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:44:08,917 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:08,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:08,918 INFO L225 Difference]: With dead ends: 288 [2021-11-19 13:44:08,918 INFO L226 Difference]: Without dead ends: 242 [2021-11-19 13:44:08,918 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:08,919 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 37 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:08,919 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 54 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:44:08,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2021-11-19 13:44:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 240. [2021-11-19 13:44:08,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 239 states have (on average 2.1422594142259412) internal successors, (512), 239 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 512 transitions. [2021-11-19 13:44:08,924 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 512 transitions. Word has length 43 [2021-11-19 13:44:08,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:08,925 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 512 transitions. [2021-11-19 13:44:08,925 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 8 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:08,925 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 512 transitions. [2021-11-19 13:44:08,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:08,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:08,925 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:08,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable113 [2021-11-19 13:44:08,926 INFO L402 AbstractCegarLoop]: === Iteration 115 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:08,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:08,926 INFO L85 PathProgramCache]: Analyzing trace with hash 452446522, now seen corresponding path program 115 times [2021-11-19 13:44:08,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:08,926 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300910606] [2021-11-19 13:44:08,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:08,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:09,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:09,143 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:09,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300910606] [2021-11-19 13:44:09,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300910606] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:09,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:09,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:44:09,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579068939] [2021-11-19 13:44:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:09,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:44:09,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:09,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:44:09,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:09,145 INFO L87 Difference]: Start difference. First operand 240 states and 512 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:09,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:09,402 INFO L93 Difference]: Finished difference Result 396 states and 848 transitions. [2021-11-19 13:44:09,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-19 13:44:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:09,403 INFO L225 Difference]: With dead ends: 396 [2021-11-19 13:44:09,404 INFO L226 Difference]: Without dead ends: 370 [2021-11-19 13:44:09,404 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:44:09,404 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 61 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 408 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:09,404 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [61 Valid, 87 Invalid, 431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 408 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:09,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 370 states. [2021-11-19 13:44:09,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 370 to 270. [2021-11-19 13:44:09,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 269 states have (on average 2.16728624535316) internal successors, (583), 269 states have internal predecessors, (583), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:09,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 583 transitions. [2021-11-19 13:44:09,408 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 583 transitions. Word has length 43 [2021-11-19 13:44:09,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:09,408 INFO L470 AbstractCegarLoop]: Abstraction has 270 states and 583 transitions. [2021-11-19 13:44:09,409 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:09,409 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 583 transitions. [2021-11-19 13:44:09,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:09,409 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:09,409 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:09,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable114 [2021-11-19 13:44:09,409 INFO L402 AbstractCegarLoop]: === Iteration 116 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:09,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:09,410 INFO L85 PathProgramCache]: Analyzing trace with hash -580967046, now seen corresponding path program 116 times [2021-11-19 13:44:09,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:09,410 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684112551] [2021-11-19 13:44:09,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:09,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:09,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:09,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:09,633 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:09,634 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684112551] [2021-11-19 13:44:09,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684112551] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:09,634 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:09,634 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:44:09,634 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110857597] [2021-11-19 13:44:09,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:09,634 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:44:09,634 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:09,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:44:09,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:09,638 INFO L87 Difference]: Start difference. First operand 270 states and 583 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:09,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:09,848 INFO L93 Difference]: Finished difference Result 304 states and 652 transitions. [2021-11-19 13:44:09,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-19 13:44:09,848 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:09,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:09,849 INFO L225 Difference]: With dead ends: 304 [2021-11-19 13:44:09,849 INFO L226 Difference]: Without dead ends: 276 [2021-11-19 13:44:09,849 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:44:09,849 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 42 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:09,850 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 62 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 291 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:09,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2021-11-19 13:44:09,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 252. [2021-11-19 13:44:09,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 251 states have (on average 2.1593625498007967) internal successors, (542), 251 states have internal predecessors, (542), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:09,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 542 transitions. [2021-11-19 13:44:09,853 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 542 transitions. Word has length 43 [2021-11-19 13:44:09,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:09,854 INFO L470 AbstractCegarLoop]: Abstraction has 252 states and 542 transitions. [2021-11-19 13:44:09,854 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:09,854 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 542 transitions. [2021-11-19 13:44:09,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:09,859 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:09,859 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:09,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable115 [2021-11-19 13:44:09,860 INFO L402 AbstractCegarLoop]: === Iteration 117 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:09,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:09,860 INFO L85 PathProgramCache]: Analyzing trace with hash -1285521120, now seen corresponding path program 117 times [2021-11-19 13:44:09,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:09,861 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [88325570] [2021-11-19 13:44:09,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:09,861 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:09,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:09,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:09,992 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:09,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [88325570] [2021-11-19 13:44:09,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [88325570] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:09,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:09,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:44:09,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453549612] [2021-11-19 13:44:09,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:09,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:44:09,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:44:09,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:44:09,997 INFO L87 Difference]: Start difference. First operand 252 states and 542 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:10,107 INFO L93 Difference]: Finished difference Result 280 states and 592 transitions. [2021-11-19 13:44:10,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-19 13:44:10,108 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:10,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:10,108 INFO L225 Difference]: With dead ends: 280 [2021-11-19 13:44:10,108 INFO L226 Difference]: Without dead ends: 222 [2021-11-19 13:44:10,108 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:44:10,109 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 28 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:10,109 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [28 Valid, 30 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:44:10,109 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-11-19 13:44:10,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2021-11-19 13:44:10,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 221 states have (on average 2.076923076923077) internal successors, (459), 221 states have internal predecessors, (459), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 459 transitions. [2021-11-19 13:44:10,112 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 459 transitions. Word has length 43 [2021-11-19 13:44:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:10,112 INFO L470 AbstractCegarLoop]: Abstraction has 222 states and 459 transitions. [2021-11-19 13:44:10,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 459 transitions. [2021-11-19 13:44:10,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:10,113 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:10,113 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:10,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable116 [2021-11-19 13:44:10,113 INFO L402 AbstractCegarLoop]: === Iteration 118 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:10,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash 521080488, now seen corresponding path program 118 times [2021-11-19 13:44:10,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:10,114 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279346038] [2021-11-19 13:44:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:10,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:10,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:10,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:10,329 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:10,329 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279346038] [2021-11-19 13:44:10,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279346038] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:10,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:10,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:44:10,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67561186] [2021-11-19 13:44:10,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:10,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:44:10,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:44:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:10,331 INFO L87 Difference]: Start difference. First operand 222 states and 459 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:10,585 INFO L93 Difference]: Finished difference Result 318 states and 659 transitions. [2021-11-19 13:44:10,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-19 13:44:10,585 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:10,586 INFO L225 Difference]: With dead ends: 318 [2021-11-19 13:44:10,586 INFO L226 Difference]: Without dead ends: 292 [2021-11-19 13:44:10,586 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:10,587 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 72 mSDsluCounter, 197 mSDsCounter, 0 mSdLazyCounter, 337 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:10,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [72 Valid, 68 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 337 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:10,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2021-11-19 13:44:10,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 224. [2021-11-19 13:44:10,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 223 states have (on average 2.071748878923767) internal successors, (462), 223 states have internal predecessors, (462), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 462 transitions. [2021-11-19 13:44:10,594 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 462 transitions. Word has length 43 [2021-11-19 13:44:10,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:10,594 INFO L470 AbstractCegarLoop]: Abstraction has 224 states and 462 transitions. [2021-11-19 13:44:10,594 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:10,594 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 462 transitions. [2021-11-19 13:44:10,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:10,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:10,595 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:10,596 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable117 [2021-11-19 13:44:10,596 INFO L402 AbstractCegarLoop]: === Iteration 119 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:10,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:10,596 INFO L85 PathProgramCache]: Analyzing trace with hash -512333080, now seen corresponding path program 119 times [2021-11-19 13:44:10,597 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:10,597 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212470509] [2021-11-19 13:44:10,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:10,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:10,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:10,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:10,796 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:10,796 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212470509] [2021-11-19 13:44:10,796 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212470509] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:10,796 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:10,796 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-19 13:44:10,797 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046036711] [2021-11-19 13:44:10,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:10,798 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 13:44:10,798 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:10,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 13:44:10,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:10,799 INFO L87 Difference]: Start difference. First operand 224 states and 462 transitions. Second operand has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:11,056 INFO L93 Difference]: Finished difference Result 234 states and 477 transitions. [2021-11-19 13:44:11,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:11,057 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:11,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:11,057 INFO L225 Difference]: With dead ends: 234 [2021-11-19 13:44:11,057 INFO L226 Difference]: Without dead ends: 188 [2021-11-19 13:44:11,057 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2021-11-19 13:44:11,058 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 33 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 355 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 82 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:11,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 82 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 355 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:11,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2021-11-19 13:44:11,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2021-11-19 13:44:11,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 181 states have (on average 2.016574585635359) internal successors, (365), 181 states have internal predecessors, (365), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 365 transitions. [2021-11-19 13:44:11,060 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 365 transitions. Word has length 43 [2021-11-19 13:44:11,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:11,061 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 365 transitions. [2021-11-19 13:44:11,061 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.909090909090909) internal successors, (43), 10 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,061 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 365 transitions. [2021-11-19 13:44:11,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:11,061 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:11,062 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:11,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable118 [2021-11-19 13:44:11,062 INFO L402 AbstractCegarLoop]: === Iteration 120 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:11,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:11,063 INFO L85 PathProgramCache]: Analyzing trace with hash 72356346, now seen corresponding path program 120 times [2021-11-19 13:44:11,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:11,063 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508158560] [2021-11-19 13:44:11,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:11,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:11,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:11,233 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:11,233 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508158560] [2021-11-19 13:44:11,234 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508158560] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:11,234 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:11,234 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:44:11,234 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871477236] [2021-11-19 13:44:11,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:11,235 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:44:11,235 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:11,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:44:11,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:44:11,236 INFO L87 Difference]: Start difference. First operand 182 states and 365 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:11,374 INFO L93 Difference]: Finished difference Result 210 states and 417 transitions. [2021-11-19 13:44:11,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:11,375 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:11,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:11,375 INFO L225 Difference]: With dead ends: 210 [2021-11-19 13:44:11,375 INFO L226 Difference]: Without dead ends: 184 [2021-11-19 13:44:11,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:11,375 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 37 mSDsluCounter, 108 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 198 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:11,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 47 Invalid, 198 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:44:11,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2021-11-19 13:44:11,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2021-11-19 13:44:11,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 183 states have (on average 2.010928961748634) internal successors, (368), 183 states have internal predecessors, (368), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 368 transitions. [2021-11-19 13:44:11,378 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 368 transitions. Word has length 43 [2021-11-19 13:44:11,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:11,378 INFO L470 AbstractCegarLoop]: Abstraction has 184 states and 368 transitions. [2021-11-19 13:44:11,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,379 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 368 transitions. [2021-11-19 13:44:11,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:11,379 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:11,379 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:11,379 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable119 [2021-11-19 13:44:11,379 INFO L402 AbstractCegarLoop]: === Iteration 121 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:11,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:11,380 INFO L85 PathProgramCache]: Analyzing trace with hash -961057222, now seen corresponding path program 121 times [2021-11-19 13:44:11,380 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:11,380 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1379818276] [2021-11-19 13:44:11,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:11,380 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:11,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:11,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:11,559 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:11,559 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1379818276] [2021-11-19 13:44:11,560 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1379818276] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:11,560 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:11,560 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-19 13:44:11,560 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389078227] [2021-11-19 13:44:11,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:11,560 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 13:44:11,561 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:11,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 13:44:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2021-11-19 13:44:11,561 INFO L87 Difference]: Start difference. First operand 184 states and 368 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:11,702 INFO L93 Difference]: Finished difference Result 210 states and 415 transitions. [2021-11-19 13:44:11,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-19 13:44:11,702 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:11,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:11,703 INFO L225 Difference]: With dead ends: 210 [2021-11-19 13:44:11,703 INFO L226 Difference]: Without dead ends: 170 [2021-11-19 13:44:11,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-19 13:44:11,703 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 43 mSDsluCounter, 113 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 53 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:11,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 53 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:44:11,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-11-19 13:44:11,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2021-11-19 13:44:11,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 169 states have (on average 1.982248520710059) internal successors, (335), 169 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 335 transitions. [2021-11-19 13:44:11,706 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 335 transitions. Word has length 43 [2021-11-19 13:44:11,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:11,706 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 335 transitions. [2021-11-19 13:44:11,706 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:11,706 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 335 transitions. [2021-11-19 13:44:11,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:11,707 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:11,707 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:11,707 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable120 [2021-11-19 13:44:11,707 INFO L402 AbstractCegarLoop]: === Iteration 122 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:11,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:11,708 INFO L85 PathProgramCache]: Analyzing trace with hash -2128905032, now seen corresponding path program 122 times [2021-11-19 13:44:11,708 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:11,708 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504700354] [2021-11-19 13:44:11,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:11,708 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:11,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:11,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:11,955 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:11,956 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504700354] [2021-11-19 13:44:11,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504700354] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:11,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:11,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:44:11,957 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1231043635] [2021-11-19 13:44:11,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:11,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:44:11,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:11,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:44:11,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:11,958 INFO L87 Difference]: Start difference. First operand 170 states and 335 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:12,176 INFO L93 Difference]: Finished difference Result 194 states and 379 transitions. [2021-11-19 13:44:12,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:12,176 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:12,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:12,177 INFO L225 Difference]: With dead ends: 194 [2021-11-19 13:44:12,177 INFO L226 Difference]: Without dead ends: 166 [2021-11-19 13:44:12,177 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:12,178 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 45 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:12,178 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 42 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 13:44:12,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-11-19 13:44:12,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2021-11-19 13:44:12,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 165 states have (on average 1.9454545454545455) internal successors, (321), 165 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 321 transitions. [2021-11-19 13:44:12,182 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 321 transitions. Word has length 43 [2021-11-19 13:44:12,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:12,183 INFO L470 AbstractCegarLoop]: Abstraction has 166 states and 321 transitions. [2021-11-19 13:44:12,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,184 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 321 transitions. [2021-11-19 13:44:12,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-11-19 13:44:12,184 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 13:44:12,184 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 13:44:12,184 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable121 [2021-11-19 13:44:12,185 INFO L402 AbstractCegarLoop]: === Iteration 123 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION] === [2021-11-19 13:44:12,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 13:44:12,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1132648696, now seen corresponding path program 123 times [2021-11-19 13:44:12,185 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-19 13:44:12,185 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204783958] [2021-11-19 13:44:12,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 13:44:12,186 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-19 13:44:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 13:44:12,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 13:44:12,413 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-19 13:44:12,414 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1204783958] [2021-11-19 13:44:12,414 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1204783958] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-19 13:44:12,414 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-19 13:44:12,414 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-19 13:44:12,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329152383] [2021-11-19 13:44:12,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 13:44:12,414 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-19 13:44:12,414 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-19 13:44:12,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-19 13:44:12,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-19 13:44:12,415 INFO L87 Difference]: Start difference. First operand 166 states and 321 transitions. Second operand has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 13:44:12,519 INFO L93 Difference]: Finished difference Result 92 states and 163 transitions. [2021-11-19 13:44:12,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-19 13:44:12,520 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2021-11-19 13:44:12,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 13:44:12,520 INFO L225 Difference]: With dead ends: 92 [2021-11-19 13:44:12,520 INFO L226 Difference]: Without dead ends: 0 [2021-11-19 13:44:12,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-11-19 13:44:12,521 INFO L933 BasicCegarLoop]: 3 mSDtfsCounter, 58 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 13:44:12,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 19 Invalid, 149 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 13:44:12,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-11-19 13:44:12,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-11-19 13:44:12,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-11-19 13:44:12,522 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 43 [2021-11-19 13:44:12,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 13:44:12,522 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-19 13:44:12,522 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.3) internal successors, (43), 9 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 13:44:12,522 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-11-19 13:44:12,522 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-11-19 13:44:12,524 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2021-11-19 13:44:12,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATION (2 of 4 remaining) [2021-11-19 13:44:12,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATION (1 of 4 remaining) [2021-11-19 13:44:12,525 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATION (0 of 4 remaining) [2021-11-19 13:44:12,526 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable122 [2021-11-19 13:44:12,528 INFO L732 BasicCegarLoop]: Path program histogram: [123] [2021-11-19 13:44:12,530 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-19 13:44:12,530 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-19 13:44:12,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 01:44:12 BasicIcfg [2021-11-19 13:44:12,533 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-19 13:44:12,534 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-19 13:44:12,534 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-19 13:44:12,534 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-19 13:44:12,535 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 01:42:39" (3/4) ... [2021-11-19 13:44:12,539 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-11-19 13:44:12,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2021-11-19 13:44:12,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2021-11-19 13:44:12,546 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2021-11-19 13:44:12,553 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 20 nodes and edges [2021-11-19 13:44:12,554 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-11-19 13:44:12,570 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-11-19 13:44:12,570 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-11-19 13:44:12,611 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/witness.graphml [2021-11-19 13:44:12,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-19 13:44:12,612 INFO L158 Benchmark]: Toolchain (without parser) took 94370.37ms. Allocated memory was 115.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 77.7MB in the beginning and 995.4MB in the end (delta: -917.7MB). Peak memory consumption was 645.9MB. Max. memory is 16.1GB. [2021-11-19 13:44:12,612 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 13:44:12,613 INFO L158 Benchmark]: CACSL2BoogieTranslator took 483.49ms. Allocated memory is still 115.3MB. Free memory was 77.6MB in the beginning and 89.7MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-19 13:44:12,613 INFO L158 Benchmark]: Boogie Procedure Inliner took 55.06ms. Allocated memory is still 115.3MB. Free memory was 89.7MB in the beginning and 87.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:44:12,613 INFO L158 Benchmark]: Boogie Preprocessor took 63.01ms. Allocated memory is still 115.3MB. Free memory was 87.3MB in the beginning and 85.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-19 13:44:12,613 INFO L158 Benchmark]: RCFGBuilder took 999.46ms. Allocated memory is still 115.3MB. Free memory was 85.4MB in the beginning and 58.3MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. [2021-11-19 13:44:12,614 INFO L158 Benchmark]: TraceAbstraction took 92675.99ms. Allocated memory was 115.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 58.0MB in the beginning and 998.6MB in the end (delta: -940.6MB). Peak memory consumption was 625.4MB. Max. memory is 16.1GB. [2021-11-19 13:44:12,614 INFO L158 Benchmark]: Witness Printer took 78.12ms. Allocated memory is still 1.7GB. Free memory was 998.6MB in the beginning and 995.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-11-19 13:44:12,615 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 115.3MB. Free memory is still 94.8MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 483.49ms. Allocated memory is still 115.3MB. Free memory was 77.6MB in the beginning and 89.7MB in the end (delta: -12.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 55.06ms. Allocated memory is still 115.3MB. Free memory was 89.7MB in the beginning and 87.3MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 63.01ms. Allocated memory is still 115.3MB. Free memory was 87.3MB in the beginning and 85.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 999.46ms. Allocated memory is still 115.3MB. Free memory was 85.4MB in the beginning and 58.3MB in the end (delta: 27.1MB). Peak memory consumption was 27.3MB. Max. memory is 16.1GB. * TraceAbstraction took 92675.99ms. Allocated memory was 115.3MB in the beginning and 1.7GB in the end (delta: 1.6GB). Free memory was 58.0MB in the beginning and 998.6MB in the end (delta: -940.6MB). Peak memory consumption was 625.4MB. Max. memory is 16.1GB. * Witness Printer took 78.12ms. Allocated memory is still 1.7GB. Free memory was 998.6MB in the beginning and 995.4MB in the end (delta: 3.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 6.5s, 160 PlacesBefore, 57 PlacesAfterwards, 152 TransitionsBefore, 47 TransitionsAfterwards, 2184 CoEnabledTransitionPairs, 7 FixpointIterations, 81 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 3 TrivialYvCompositions, 0 ConcurrentYvCompositions, 2 ChoiceCompositions, 110 TotalNumberOfCompositions, 14218 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5555, positive: 5106, positive conditional: 0, positive unconditional: 5106, negative: 449, negative conditional: 0, negative unconditional: 449, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 1473, positive: 1388, positive conditional: 0, positive unconditional: 1388, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 1473, positive: 1363, positive conditional: 0, positive unconditional: 1363, negative: 110, negative conditional: 0, negative unconditional: 110, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 110, positive: 25, positive conditional: 0, positive unconditional: 25, negative: 85, negative conditional: 0, negative unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Query Time [ms]: [ total: 224, positive: 46, positive conditional: 0, positive unconditional: 46, negative: 178, negative conditional: 0, negative unconditional: 178, unknown: 0, unknown conditional: 0, unknown unconditional: 0] ], Cache Queries: [ total: 5555, positive: 3718, positive conditional: 0, positive unconditional: 3718, negative: 364, negative conditional: 0, negative unconditional: 364, unknown: 1473, unknown conditional: 0, unknown unconditional: 1473] , Statistics on independence cache: Total cache size (in pairs): 526, Positive cache size: 477, Positive conditional cache size: 0, Positive unconditional cache size: 477, Negative cache size: 49, Negative conditional cache size: 0, Negative unconditional cache size: 49 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 196]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 199 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 92.4s, OverallIterations: 123, TraceHistogramMax: 1, PathProgramHistogramMax: 123, EmptinessCheckTime: 1.2s, AutomataDifference: 45.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.7s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 8427 SdHoareTripleChecker+Valid, 37.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8427 mSDsluCounter, 9362 SdHoareTripleChecker+Invalid, 31.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 31598 mSDsCounter, 2130 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 57239 IncrementalHoareTripleChecker+Invalid, 59369 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2130 mSolverCounterUnsat, 1619 mSDtfsCounter, 57239 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1463 GetRequests, 342 SyntacticMatches, 144 SemanticMatches, 977 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1385 ImplicationChecksByTransitivity, 9.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=7378occurred in iteration=26, InterpolantAutomatonStates: 1065, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 12.4s AutomataMinimizationTime, 123 MinimizatonAttempts, 38738 StatesRemovedByMinimization, 96 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 3.9s SatisfiabilityAnalysisTime, 21.5s InterpolantComputationTime, 5289 NumberOfCodeBlocks, 5289 NumberOfCodeBlocksAsserted, 123 NumberOfCheckSat, 5166 ConstructedInterpolants, 0 QuantifiedInterpolants, 33645 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 123 InterpolantComputations, 123 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-11-19 13:44:12,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3b32609d-6eb0-4d17-8f42-57e4e1b661d3/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE