./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7 --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 c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 20:21:06,427 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 20:21:06,430 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 20:21:06,470 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 20:21:06,472 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 20:21:06,476 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 20:21:06,479 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 20:21:06,482 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 20:21:06,485 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 20:21:06,491 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 20:21:06,492 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 20:21:06,493 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 20:21:06,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 20:21:06,495 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 20:21:06,496 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 20:21:06,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 20:21:06,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 20:21:06,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 20:21:06,501 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 20:21:06,504 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 20:21:06,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 20:21:06,507 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 20:21:06,508 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 20:21:06,509 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 20:21:06,513 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 20:21:06,513 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 20:21:06,514 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 20:21:06,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 20:21:06,515 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 20:21:06,517 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 20:21:06,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 20:21:06,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 20:21:06,519 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 20:21:06,520 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 20:21:06,521 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 20:21:06,521 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 20:21:06,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 20:21:06,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 20:21:06,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 20:21:06,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 20:21:06,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 20:21:06,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 20:21:06,554 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 20:21:06,555 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 20:21:06,555 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 20:21:06,556 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 20:21:06,557 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 20:21:06,557 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 20:21:06,557 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 20:21:06,557 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 20:21:06,558 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 20:21:06,558 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 20:21:06,559 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 20:21:06,559 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 20:21:06,559 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 20:21:06,560 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 20:21:06,560 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 20:21:06,560 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 20:21:06,560 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 20:21:06,561 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 20:21:06,561 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 20:21:06,562 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 20:21:06,562 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 20:21:06,562 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 20:21:06,562 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 20:21:06,562 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 20:21:06,563 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 20:21:06,563 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 20:21:06,563 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 20:21:06,563 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 20:21:06,564 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 20:21:06,564 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 20:21:06,564 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 20:21:06,564 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 20:21:06,565 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:06,565 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 20:21:06,565 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 20:21:06,565 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 20:21:06,566 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 20:21:06,566 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 20:21:06,566 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 20:21:06,566 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 20:21:06,566 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 20:21:06,567 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_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c7095f70ba7104a12a93da2a0b557c5b5c6880d23caa33c7c2fd19334f4cb537 [2021-11-25 20:21:06,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 20:21:06,894 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 20:21:06,896 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 20:21:06,897 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 20:21:06,898 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 20:21:06,899 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2021-11-25 20:21:06,964 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/data/c1d2dbdb4/e8e1f057115549e5a62f1bee2ba11590/FLAGf362974de [2021-11-25 20:21:07,474 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 20:21:07,474 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c [2021-11-25 20:21:07,482 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/data/c1d2dbdb4/e8e1f057115549e5a62f1bee2ba11590/FLAGf362974de [2021-11-25 20:21:07,827 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/data/c1d2dbdb4/e8e1f057115549e5a62f1bee2ba11590 [2021-11-25 20:21:07,829 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 20:21:07,830 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 20:21:07,832 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:07,832 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 20:21:07,835 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 20:21:07,836 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:07" (1/1) ... [2021-11-25 20:21:07,837 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3268d36f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:07, skipping insertion in model container [2021-11-25 20:21:07,837 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:21:07" (1/1) ... [2021-11-25 20:21:07,847 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 20:21:07,871 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 20:21:08,122 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_60cc50d5-f4f6-404f-ba0c-2285e50396d5/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2021-11-25 20:21:08,127 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:08,145 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 20:21:08,197 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_60cc50d5-f4f6-404f-ba0c-2285e50396d5/sv-benchmarks/c/weaver/parallel-ticket-6.wvr.c[4400,4413] [2021-11-25 20:21:08,206 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 20:21:08,223 INFO L208 MainTranslator]: Completed translation [2021-11-25 20:21:08,224 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08 WrapperNode [2021-11-25 20:21:08,224 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 20:21:08,226 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:08,226 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 20:21:08,226 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 20:21:08,233 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,248 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,288 INFO L137 Inliner]: procedures = 25, calls = 100, calls flagged for inlining = 10, calls inlined = 10, statements flattened = 278 [2021-11-25 20:21:08,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 20:21:08,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 20:21:08,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 20:21:08,290 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 20:21:08,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,303 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,303 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,312 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,316 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,331 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,335 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 20:21:08,335 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 20:21:08,336 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 20:21:08,336 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 20:21:08,337 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (1/1) ... [2021-11-25 20:21:08,356 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 20:21:08,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 20:21:08,379 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 20:21:08,386 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60cc50d5-f4f6-404f-ba0c-2285e50396d5/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 20:21:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 20:21:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-25 20:21:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-25 20:21:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-25 20:21:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-25 20:21:08,422 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-25 20:21:08,422 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-25 20:21:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-25 20:21:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2021-11-25 20:21:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2021-11-25 20:21:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2021-11-25 20:21:08,423 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2021-11-25 20:21:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 20:21:08,423 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2021-11-25 20:21:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2021-11-25 20:21:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2021-11-25 20:21:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2021-11-25 20:21:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2021-11-25 20:21:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2021-11-25 20:21:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 20:21:08,424 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 20:21:08,424 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-25 20:21:08,427 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-25 20:21:08,531 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 20:21:08,533 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 20:21:08,891 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 20:21:09,014 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 20:21:09,014 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-25 20:21:09,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:09 BoogieIcfgContainer [2021-11-25 20:21:09,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 20:21:09,021 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 20:21:09,022 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 20:21:09,025 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 20:21:09,025 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 08:21:07" (1/3) ... [2021-11-25 20:21:09,027 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df8d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:09, skipping insertion in model container [2021-11-25 20:21:09,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:21:08" (2/3) ... [2021-11-25 20:21:09,028 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76df8d88 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 08:21:09, skipping insertion in model container [2021-11-25 20:21:09,028 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:21:09" (3/3) ... [2021-11-25 20:21:09,035 INFO L111 eAbstractionObserver]: Analyzing ICFG parallel-ticket-6.wvr.c [2021-11-25 20:21:09,041 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-25 20:21:09,041 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 20:21:09,041 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 20:21:09,042 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-25 20:21:09,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,135 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,136 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,137 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,137 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,138 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,139 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,139 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,139 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,139 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,140 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,140 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,140 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,140 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,140 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,141 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,141 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,142 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,142 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,142 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,142 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,142 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,143 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,143 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,143 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,143 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,143 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,143 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,144 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,144 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,144 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,144 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,144 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,144 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,145 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,145 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,145 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,145 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,145 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,146 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,146 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,146 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,146 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,146 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,147 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,147 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,147 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,147 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,147 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,148 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,148 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,148 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,151 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,151 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post8#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,151 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#t~post7#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,151 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,152 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,152 WARN L322 ript$VariableManager]: TermVariabe |thread4Thread1of1ForFork0_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post4#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,153 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,154 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post3#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,154 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,154 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post9#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,155 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,155 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,155 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,155 WARN L322 ript$VariableManager]: TermVariabe |thread5Thread1of1ForFork2_#t~post10#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,156 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,156 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,156 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post5#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,156 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,156 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,157 WARN L322 ript$VariableManager]: TermVariabe |thread3Thread1of1ForFork3_#t~post6#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,157 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,157 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post12#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,158 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#t~post11#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,158 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,158 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,158 WARN L322 ript$VariableManager]: TermVariabe |thread6Thread1of1ForFork4_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_assume_abort_if_not_#in~cond#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post2#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,159 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#res#1.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,160 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork5_#t~post1#1| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-25 20:21:09,164 INFO L148 ThreadInstanceAdder]: Constructed 6 joinOtherThreadTransitions. [2021-11-25 20:21:09,224 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 20:21:09,231 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 [2021-11-25 20:21:09,231 INFO L340 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2021-11-25 20:21:09,247 INFO L118 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2021-11-25 20:21:09,261 INFO L133 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 205 places, 188 transitions, 424 flow [2021-11-25 20:21:09,263 INFO L110 LiptonReduction]: Starting Lipton reduction on Petri net that has 205 places, 188 transitions, 424 flow [2021-11-25 20:21:09,265 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 205 places, 188 transitions, 424 flow [2021-11-25 20:21:09,364 INFO L129 PetriNetUnfolder]: 2/182 cut-off events. [2021-11-25 20:21:09,365 INFO L130 PetriNetUnfolder]: For 6/6 co-relation queries the response was YES. [2021-11-25 20:21:09,368 INFO L84 FinitePrefix]: Finished finitePrefix Result has 207 conditions, 182 events. 2/182 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 80 event pairs, 0 based on Foata normal form. 0/179 useless extension candidates. Maximal degree in co-relation 139. Up to 2 conditions per place. [2021-11-25 20:21:09,374 INFO L116 LiptonReduction]: Number of co-enabled transitions 3042 [2021-11-25 20:21:19,222 INFO L131 LiptonReduction]: Checked pairs total: 7194 [2021-11-25 20:21:19,222 INFO L133 LiptonReduction]: Total number of compositions: 153 [2021-11-25 20:21:19,234 INFO L111 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 64 places, 45 transitions, 138 flow [2021-11-25 20:21:19,441 INFO L133 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 3642 states, 3641 states have (on average 4.337819280417468) internal successors, (15794), 3641 states have internal predecessors, (15794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:19,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 3642 states, 3641 states have (on average 4.337819280417468) internal successors, (15794), 3641 states have internal predecessors, (15794), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:19,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:19,507 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:19,508 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:19,509 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:19,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:19,515 INFO L85 PathProgramCache]: Analyzing trace with hash 1395283831, now seen corresponding path program 1 times [2021-11-25 20:21:19,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:19,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916812441] [2021-11-25 20:21:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:19,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:20,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:20,386 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:20,387 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:20,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916812441] [2021-11-25 20:21:20,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916812441] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:20,388 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:20,389 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:21:20,390 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527261289] [2021-11-25 20:21:20,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:20,394 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:21:20,394 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:20,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:21:20,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:21:20,433 INFO L87 Difference]: Start difference. First operand has 3642 states, 3641 states have (on average 4.337819280417468) internal successors, (15794), 3641 states have internal predecessors, (15794), 0 states have call successors, (0), 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 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:21,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:21,144 INFO L93 Difference]: Finished difference Result 9956 states and 41501 transitions. [2021-11-25 20:21:21,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:21:21,147 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:21,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:21,298 INFO L225 Difference]: With dead ends: 9956 [2021-11-25 20:21:21,298 INFO L226 Difference]: Without dead ends: 9956 [2021-11-25 20:21:21,299 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:21:21,303 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 90 mSDsluCounter, 202 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 90 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:21,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [90 Valid, 0 Invalid, 502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:21:21,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9956 states. [2021-11-25 20:21:21,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9956 to 6158. [2021-11-25 20:21:21,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6158 states, 6157 states have (on average 4.242000974500568) internal successors, (26118), 6157 states have internal predecessors, (26118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:21,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6158 states to 6158 states and 26118 transitions. [2021-11-25 20:21:21,955 INFO L78 Accepts]: Start accepts. Automaton has 6158 states and 26118 transitions. Word has length 38 [2021-11-25 20:21:21,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:21,956 INFO L470 AbstractCegarLoop]: Abstraction has 6158 states and 26118 transitions. [2021-11-25 20:21:21,957 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:21,957 INFO L276 IsEmpty]: Start isEmpty. Operand 6158 states and 26118 transitions. [2021-11-25 20:21:21,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:21,988 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:21,989 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] [2021-11-25 20:21:21,989 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 20:21:21,989 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:21,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:21,990 INFO L85 PathProgramCache]: Analyzing trace with hash -1545611861, now seen corresponding path program 2 times [2021-11-25 20:21:21,991 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:21,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018042446] [2021-11-25 20:21:21,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:21,991 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:22,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:22,446 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:22,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018042446] [2021-11-25 20:21:22,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018042446] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:22,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:22,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 20:21:22,447 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795234991] [2021-11-25 20:21:22,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:22,449 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-25 20:21:22,449 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:22,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-25 20:21:22,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-25 20:21:22,450 INFO L87 Difference]: Start difference. First operand 6158 states and 26118 transitions. Second operand has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:23,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:23,115 INFO L93 Difference]: Finished difference Result 11860 states and 48311 transitions. [2021-11-25 20:21:23,116 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-25 20:21:23,116 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:23,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:23,255 INFO L225 Difference]: With dead ends: 11860 [2021-11-25 20:21:23,267 INFO L226 Difference]: Without dead ends: 11860 [2021-11-25 20:21:23,268 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:21:23,269 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 123 mSDsluCounter, 238 mSDsCounter, 0 mSdLazyCounter, 521 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 593 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 521 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:23,270 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [123 Valid, 0 Invalid, 593 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 521 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:21:23,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11860 states. [2021-11-25 20:21:23,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11860 to 7880. [2021-11-25 20:21:23,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7880 states, 7879 states have (on average 4.227820789440284) internal successors, (33311), 7879 states have internal predecessors, (33311), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:23,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7880 states to 7880 states and 33311 transitions. [2021-11-25 20:21:23,890 INFO L78 Accepts]: Start accepts. Automaton has 7880 states and 33311 transitions. Word has length 38 [2021-11-25 20:21:23,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:23,890 INFO L470 AbstractCegarLoop]: Abstraction has 7880 states and 33311 transitions. [2021-11-25 20:21:23,890 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.75) internal successors, (38), 7 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:23,891 INFO L276 IsEmpty]: Start isEmpty. Operand 7880 states and 33311 transitions. [2021-11-25 20:21:23,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:23,925 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:23,925 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] [2021-11-25 20:21:23,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 20:21:23,926 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:23,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:23,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1636618255, now seen corresponding path program 3 times [2021-11-25 20:21:23,927 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:23,927 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1840747084] [2021-11-25 20:21:23,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:23,927 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:24,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:24,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:24,188 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:24,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1840747084] [2021-11-25 20:21:24,190 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1840747084] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:24,190 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:24,190 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:21:24,191 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604442822] [2021-11-25 20:21:24,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:24,192 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:21:24,192 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:24,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:21:24,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:21:24,193 INFO L87 Difference]: Start difference. First operand 7880 states and 33311 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:24,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:24,935 INFO L93 Difference]: Finished difference Result 11692 states and 47987 transitions. [2021-11-25 20:21:24,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 20:21:24,936 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:24,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:25,017 INFO L225 Difference]: With dead ends: 11692 [2021-11-25 20:21:25,017 INFO L226 Difference]: Without dead ends: 11692 [2021-11-25 20:21:25,018 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=56, Invalid=100, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:21:25,019 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 132 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 722 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 820 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:25,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [132 Valid, 0 Invalid, 820 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 722 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:21:25,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11692 states. [2021-11-25 20:21:25,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11692 to 8736. [2021-11-25 20:21:25,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8736 states, 8735 states have (on average 4.223125357756153) internal successors, (36889), 8735 states have internal predecessors, (36889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:25,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8736 states to 8736 states and 36889 transitions. [2021-11-25 20:21:25,757 INFO L78 Accepts]: Start accepts. Automaton has 8736 states and 36889 transitions. Word has length 38 [2021-11-25 20:21:25,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:25,757 INFO L470 AbstractCegarLoop]: Abstraction has 8736 states and 36889 transitions. [2021-11-25 20:21:25,758 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:25,758 INFO L276 IsEmpty]: Start isEmpty. Operand 8736 states and 36889 transitions. [2021-11-25 20:21:25,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:25,793 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:25,793 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:25,793 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 20:21:25,794 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:25,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:25,794 INFO L85 PathProgramCache]: Analyzing trace with hash 452974141, now seen corresponding path program 4 times [2021-11-25 20:21:25,794 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:25,795 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676228199] [2021-11-25 20:21:25,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:25,795 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:25,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:25,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:25,980 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:25,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676228199] [2021-11-25 20:21:25,980 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676228199] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:25,981 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:25,981 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 20:21:25,981 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931970536] [2021-11-25 20:21:25,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:25,981 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:21:25,982 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:25,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:21:25,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:21:25,982 INFO L87 Difference]: Start difference. First operand 8736 states and 36889 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:26,858 INFO L93 Difference]: Finished difference Result 13022 states and 53035 transitions. [2021-11-25 20:21:26,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:21:26,859 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:26,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:26,924 INFO L225 Difference]: With dead ends: 13022 [2021-11-25 20:21:26,924 INFO L226 Difference]: Without dead ends: 13022 [2021-11-25 20:21:26,925 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=180, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:21:26,928 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 156 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 934 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:26,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [156 Valid, 0 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 934 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:21:26,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13022 states. [2021-11-25 20:21:27,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13022 to 10060. [2021-11-25 20:21:27,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10060 states, 10059 states have (on average 4.162839248434238) internal successors, (41874), 10059 states have internal predecessors, (41874), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:27,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10060 states to 10060 states and 41874 transitions. [2021-11-25 20:21:27,477 INFO L78 Accepts]: Start accepts. Automaton has 10060 states and 41874 transitions. Word has length 38 [2021-11-25 20:21:27,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:27,477 INFO L470 AbstractCegarLoop]: Abstraction has 10060 states and 41874 transitions. [2021-11-25 20:21:27,478 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:27,478 INFO L276 IsEmpty]: Start isEmpty. Operand 10060 states and 41874 transitions. [2021-11-25 20:21:27,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:27,528 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:27,528 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] [2021-11-25 20:21:27,528 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 20:21:27,528 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:27,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:27,534 INFO L85 PathProgramCache]: Analyzing trace with hash -595618723, now seen corresponding path program 5 times [2021-11-25 20:21:27,535 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:27,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462222388] [2021-11-25 20:21:27,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:27,536 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:27,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:27,824 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:27,825 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:27,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1462222388] [2021-11-25 20:21:27,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1462222388] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:27,827 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:27,827 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:21:27,827 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528263477] [2021-11-25 20:21:27,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:27,828 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:21:27,828 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:27,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:21:27,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:21:27,830 INFO L87 Difference]: Start difference. First operand 10060 states and 41874 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:28,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:28,571 INFO L93 Difference]: Finished difference Result 17054 states and 67304 transitions. [2021-11-25 20:21:28,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:21:28,571 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:28,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:28,650 INFO L225 Difference]: With dead ends: 17054 [2021-11-25 20:21:28,653 INFO L226 Difference]: Without dead ends: 17054 [2021-11-25 20:21:28,654 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:21:28,656 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 135 mSDsluCounter, 330 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:28,657 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [135 Valid, 0 Invalid, 771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:21:28,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17054 states. [2021-11-25 20:21:29,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17054 to 12458. [2021-11-25 20:21:29,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12458 states, 12457 states have (on average 4.040619731877659) internal successors, (50334), 12457 states have internal predecessors, (50334), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:29,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12458 states to 12458 states and 50334 transitions. [2021-11-25 20:21:29,288 INFO L78 Accepts]: Start accepts. Automaton has 12458 states and 50334 transitions. Word has length 38 [2021-11-25 20:21:29,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:29,290 INFO L470 AbstractCegarLoop]: Abstraction has 12458 states and 50334 transitions. [2021-11-25 20:21:29,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:29,290 INFO L276 IsEmpty]: Start isEmpty. Operand 12458 states and 50334 transitions. [2021-11-25 20:21:29,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:29,518 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:29,518 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] [2021-11-25 20:21:29,518 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-25 20:21:29,519 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:29,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:29,519 INFO L85 PathProgramCache]: Analyzing trace with hash -1249909475, now seen corresponding path program 6 times [2021-11-25 20:21:29,519 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:29,519 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999610082] [2021-11-25 20:21:29,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:29,520 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:29,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:29,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:29,808 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:29,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999610082] [2021-11-25 20:21:29,809 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999610082] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:29,809 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:29,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:21:29,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121893450] [2021-11-25 20:21:29,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:29,810 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:21:29,810 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:29,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:21:29,811 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:21:29,811 INFO L87 Difference]: Start difference. First operand 12458 states and 50334 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:30,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:30,879 INFO L93 Difference]: Finished difference Result 18388 states and 71233 transitions. [2021-11-25 20:21:30,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 20:21:30,880 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:30,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:30,967 INFO L225 Difference]: With dead ends: 18388 [2021-11-25 20:21:30,968 INFO L226 Difference]: Without dead ends: 18388 [2021-11-25 20:21:30,968 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:21:30,969 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 177 mSDsluCounter, 374 mSDsCounter, 0 mSdLazyCounter, 873 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 873 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:30,970 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [177 Valid, 0 Invalid, 1016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 873 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:21:31,022 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18388 states. [2021-11-25 20:21:31,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18388 to 14494. [2021-11-25 20:21:31,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14494 states, 14493 states have (on average 3.945559925481267) internal successors, (57183), 14493 states have internal predecessors, (57183), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:31,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14494 states to 14494 states and 57183 transitions. [2021-11-25 20:21:31,759 INFO L78 Accepts]: Start accepts. Automaton has 14494 states and 57183 transitions. Word has length 38 [2021-11-25 20:21:31,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:31,759 INFO L470 AbstractCegarLoop]: Abstraction has 14494 states and 57183 transitions. [2021-11-25 20:21:31,760 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:31,760 INFO L276 IsEmpty]: Start isEmpty. Operand 14494 states and 57183 transitions. [2021-11-25 20:21:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:31,806 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:31,806 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] [2021-11-25 20:21:31,806 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-25 20:21:31,806 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash -1006640387, now seen corresponding path program 7 times [2021-11-25 20:21:31,807 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:31,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186376489] [2021-11-25 20:21:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:31,807 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:32,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:32,121 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:32,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186376489] [2021-11-25 20:21:32,123 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186376489] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:32,123 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:32,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-25 20:21:32,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065582772] [2021-11-25 20:21:32,124 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:32,125 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:21:32,125 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:32,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:21:32,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:21:32,126 INFO L87 Difference]: Start difference. First operand 14494 states and 57183 transitions. Second operand has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:32,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:32,587 INFO L93 Difference]: Finished difference Result 25708 states and 97636 transitions. [2021-11-25 20:21:32,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:21:32,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:32,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:32,670 INFO L225 Difference]: With dead ends: 25708 [2021-11-25 20:21:32,670 INFO L226 Difference]: Without dead ends: 14928 [2021-11-25 20:21:32,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:21:32,672 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 59 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:32,672 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [59 Valid, 0 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:21:32,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14928 states. [2021-11-25 20:21:33,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14928 to 14928. [2021-11-25 20:21:33,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14928 states, 14927 states have (on average 3.7460306826555905) internal successors, (55917), 14927 states have internal predecessors, (55917), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:33,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14928 states to 14928 states and 55917 transitions. [2021-11-25 20:21:33,275 INFO L78 Accepts]: Start accepts. Automaton has 14928 states and 55917 transitions. Word has length 38 [2021-11-25 20:21:33,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:33,275 INFO L470 AbstractCegarLoop]: Abstraction has 14928 states and 55917 transitions. [2021-11-25 20:21:33,276 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 9.5) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 14928 states and 55917 transitions. [2021-11-25 20:21:33,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:33,307 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:33,308 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] [2021-11-25 20:21:33,308 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-25 20:21:33,308 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:33,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:33,308 INFO L85 PathProgramCache]: Analyzing trace with hash 289590839, now seen corresponding path program 8 times [2021-11-25 20:21:33,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:33,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771654573] [2021-11-25 20:21:33,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:33,309 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:33,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:33,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:33,474 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:33,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771654573] [2021-11-25 20:21:33,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771654573] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:33,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:33,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 20:21:33,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461101291] [2021-11-25 20:21:33,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:33,476 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:21:33,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:33,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:21:33,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:21:33,476 INFO L87 Difference]: Start difference. First operand 14928 states and 55917 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:34,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:34,336 INFO L93 Difference]: Finished difference Result 16694 states and 59226 transitions. [2021-11-25 20:21:34,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-11-25 20:21:34,338 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:34,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:34,617 INFO L225 Difference]: With dead ends: 16694 [2021-11-25 20:21:34,617 INFO L226 Difference]: Without dead ends: 16584 [2021-11-25 20:21:34,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=117, Invalid=225, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:21:34,619 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 167 mSDsluCounter, 382 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:34,619 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 0 Invalid, 984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:21:34,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16584 states. [2021-11-25 20:21:34,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16584 to 14720. [2021-11-25 20:21:34,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14720 states, 14719 states have (on average 3.5923636116584006) internal successors, (52876), 14719 states have internal predecessors, (52876), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:35,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14720 states to 14720 states and 52876 transitions. [2021-11-25 20:21:35,017 INFO L78 Accepts]: Start accepts. Automaton has 14720 states and 52876 transitions. Word has length 38 [2021-11-25 20:21:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:35,018 INFO L470 AbstractCegarLoop]: Abstraction has 14720 states and 52876 transitions. [2021-11-25 20:21:35,018 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:35,018 INFO L276 IsEmpty]: Start isEmpty. Operand 14720 states and 52876 transitions. [2021-11-25 20:21:35,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:35,047 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:35,047 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] [2021-11-25 20:21:35,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-25 20:21:35,048 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:35,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:35,048 INFO L85 PathProgramCache]: Analyzing trace with hash -1734690807, now seen corresponding path program 9 times [2021-11-25 20:21:35,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:35,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150324591] [2021-11-25 20:21:35,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:35,048 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:35,358 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:35,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150324591] [2021-11-25 20:21:35,358 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150324591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:35,358 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:35,359 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:21:35,359 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226171891] [2021-11-25 20:21:35,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:35,360 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:21:35,360 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:35,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:21:35,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:21:35,361 INFO L87 Difference]: Start difference. First operand 14720 states and 52876 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:36,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:36,192 INFO L93 Difference]: Finished difference Result 18708 states and 65264 transitions. [2021-11-25 20:21:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:21:36,193 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:36,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:36,249 INFO L225 Difference]: With dead ends: 18708 [2021-11-25 20:21:36,249 INFO L226 Difference]: Without dead ends: 18474 [2021-11-25 20:21:36,249 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=181, Invalid=371, Unknown=0, NotChecked=0, Total=552 [2021-11-25 20:21:36,251 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 1014 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:36,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 1140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1014 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:21:36,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18474 states. [2021-11-25 20:21:36,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18474 to 15720. [2021-11-25 20:21:36,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15720 states, 15719 states have (on average 3.533367262548508) internal successors, (55541), 15719 states have internal predecessors, (55541), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:36,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15720 states to 15720 states and 55541 transitions. [2021-11-25 20:21:36,825 INFO L78 Accepts]: Start accepts. Automaton has 15720 states and 55541 transitions. Word has length 38 [2021-11-25 20:21:36,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:36,826 INFO L470 AbstractCegarLoop]: Abstraction has 15720 states and 55541 transitions. [2021-11-25 20:21:36,826 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:36,826 INFO L276 IsEmpty]: Start isEmpty. Operand 15720 states and 55541 transitions. [2021-11-25 20:21:36,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:36,863 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:36,863 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] [2021-11-25 20:21:36,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-25 20:21:36,863 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:36,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:36,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1644673597, now seen corresponding path program 10 times [2021-11-25 20:21:36,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:36,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781440876] [2021-11-25 20:21:36,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:36,865 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:37,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:37,009 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:37,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781440876] [2021-11-25 20:21:37,010 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781440876] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:37,010 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:37,010 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-11-25 20:21:37,010 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [498628906] [2021-11-25 20:21:37,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:37,010 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-25 20:21:37,011 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:37,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-25 20:21:37,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2021-11-25 20:21:37,011 INFO L87 Difference]: Start difference. First operand 15720 states and 55541 transitions. Second operand has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:37,974 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:37,974 INFO L93 Difference]: Finished difference Result 19710 states and 68407 transitions. [2021-11-25 20:21:37,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-25 20:21:37,975 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:37,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:38,193 INFO L225 Difference]: With dead ends: 19710 [2021-11-25 20:21:38,193 INFO L226 Difference]: Without dead ends: 19376 [2021-11-25 20:21:38,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=225, Invalid=477, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:21:38,195 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 190 mSDsluCounter, 511 mSDsCounter, 0 mSdLazyCounter, 1073 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 1073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:38,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [190 Valid, 0 Invalid, 1233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 1073 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:21:38,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19376 states. [2021-11-25 20:21:38,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19376 to 16398. [2021-11-25 20:21:38,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16398 states, 16397 states have (on average 3.5064950905653474) internal successors, (57496), 16397 states have internal predecessors, (57496), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:38,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16398 states to 16398 states and 57496 transitions. [2021-11-25 20:21:38,831 INFO L78 Accepts]: Start accepts. Automaton has 16398 states and 57496 transitions. Word has length 38 [2021-11-25 20:21:38,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:38,831 INFO L470 AbstractCegarLoop]: Abstraction has 16398 states and 57496 transitions. [2021-11-25 20:21:38,831 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.1666666666666665) internal successors, (38), 11 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:38,831 INFO L276 IsEmpty]: Start isEmpty. Operand 16398 states and 57496 transitions. [2021-11-25 20:21:38,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:38,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:38,886 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] [2021-11-25 20:21:38,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-25 20:21:38,886 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:38,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:38,887 INFO L85 PathProgramCache]: Analyzing trace with hash 556792541, now seen corresponding path program 11 times [2021-11-25 20:21:38,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:38,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [789458936] [2021-11-25 20:21:38,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:38,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:38,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:39,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:39,080 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:39,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [789458936] [2021-11-25 20:21:39,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [789458936] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:39,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:39,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:21:39,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208329178] [2021-11-25 20:21:39,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:39,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:21:39,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:39,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:21:39,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:21:39,083 INFO L87 Difference]: Start difference. First operand 16398 states and 57496 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:40,541 INFO L93 Difference]: Finished difference Result 19648 states and 67871 transitions. [2021-11-25 20:21:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 20:21:40,542 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:40,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:40,599 INFO L225 Difference]: With dead ends: 19648 [2021-11-25 20:21:40,599 INFO L226 Difference]: Without dead ends: 19250 [2021-11-25 20:21:40,600 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:21:40,600 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 189 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 1341 mSolverCounterSat, 188 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 188 IncrementalHoareTripleChecker+Valid, 1341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:40,601 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [189 Valid, 0 Invalid, 1529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [188 Valid, 1341 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-25 20:21:40,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19250 states. [2021-11-25 20:21:40,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19250 to 16536. [2021-11-25 20:21:40,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16536 states, 16535 states have (on average 3.504505594194134) internal successors, (57947), 16535 states have internal predecessors, (57947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:41,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16536 states to 16536 states and 57947 transitions. [2021-11-25 20:21:41,026 INFO L78 Accepts]: Start accepts. Automaton has 16536 states and 57947 transitions. Word has length 38 [2021-11-25 20:21:41,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:41,027 INFO L470 AbstractCegarLoop]: Abstraction has 16536 states and 57947 transitions. [2021-11-25 20:21:41,027 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:41,027 INFO L276 IsEmpty]: Start isEmpty. Operand 16536 states and 57947 transitions. [2021-11-25 20:21:41,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:41,055 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:41,055 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] [2021-11-25 20:21:41,056 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-25 20:21:41,056 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:41,056 INFO L85 PathProgramCache]: Analyzing trace with hash -63382597, now seen corresponding path program 12 times [2021-11-25 20:21:41,057 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:41,057 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641509125] [2021-11-25 20:21:41,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:41,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:41,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:41,369 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:41,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641509125] [2021-11-25 20:21:41,369 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641509125] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:41,369 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:41,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:21:41,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1862935558] [2021-11-25 20:21:41,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:41,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:21:41,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:41,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:21:41,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:21:41,371 INFO L87 Difference]: Start difference. First operand 16536 states and 57947 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:42,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:42,473 INFO L93 Difference]: Finished difference Result 21056 states and 72030 transitions. [2021-11-25 20:21:42,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 20:21:42,474 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:42,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:42,523 INFO L225 Difference]: With dead ends: 21056 [2021-11-25 20:21:42,523 INFO L226 Difference]: Without dead ends: 20694 [2021-11-25 20:21:42,523 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:21:42,524 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 200 mSDsluCounter, 603 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:42,524 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 0 Invalid, 1588 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:21:42,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20694 states. [2021-11-25 20:21:43,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20694 to 15736. [2021-11-25 20:21:43,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15736 states, 15735 states have (on average 3.502065459167461) internal successors, (55105), 15735 states have internal predecessors, (55105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:43,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15736 states to 15736 states and 55105 transitions. [2021-11-25 20:21:43,083 INFO L78 Accepts]: Start accepts. Automaton has 15736 states and 55105 transitions. Word has length 38 [2021-11-25 20:21:43,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:43,083 INFO L470 AbstractCegarLoop]: Abstraction has 15736 states and 55105 transitions. [2021-11-25 20:21:43,083 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:43,084 INFO L276 IsEmpty]: Start isEmpty. Operand 15736 states and 55105 transitions. [2021-11-25 20:21:43,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:43,110 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:43,110 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] [2021-11-25 20:21:43,110 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-25 20:21:43,111 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:43,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:43,111 INFO L85 PathProgramCache]: Analyzing trace with hash -1296632691, now seen corresponding path program 13 times [2021-11-25 20:21:43,111 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:43,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77204537] [2021-11-25 20:21:43,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:43,111 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:43,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:43,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:43,263 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:43,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77204537] [2021-11-25 20:21:43,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77204537] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:43,264 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:43,264 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:21:43,264 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355743251] [2021-11-25 20:21:43,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:43,264 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:21:43,264 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:43,265 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:21:43,265 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:21:43,265 INFO L87 Difference]: Start difference. First operand 15736 states and 55105 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:43,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:43,821 INFO L93 Difference]: Finished difference Result 23980 states and 80408 transitions. [2021-11-25 20:21:43,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:21:43,822 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:43,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:43,878 INFO L225 Difference]: With dead ends: 23980 [2021-11-25 20:21:43,878 INFO L226 Difference]: Without dead ends: 23926 [2021-11-25 20:21:43,883 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:21:43,884 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 148 mSDsluCounter, 357 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:43,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [148 Valid, 0 Invalid, 813 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:21:43,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23926 states. [2021-11-25 20:21:44,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23926 to 15818. [2021-11-25 20:21:44,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15818 states, 15817 states have (on average 3.4968704558386547) internal successors, (55310), 15817 states have internal predecessors, (55310), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:44,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15818 states to 15818 states and 55310 transitions. [2021-11-25 20:21:44,514 INFO L78 Accepts]: Start accepts. Automaton has 15818 states and 55310 transitions. Word has length 38 [2021-11-25 20:21:44,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:44,514 INFO L470 AbstractCegarLoop]: Abstraction has 15818 states and 55310 transitions. [2021-11-25 20:21:44,514 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:44,515 INFO L276 IsEmpty]: Start isEmpty. Operand 15818 states and 55310 transitions. [2021-11-25 20:21:44,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:44,548 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:44,548 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] [2021-11-25 20:21:44,549 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-11-25 20:21:44,549 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:44,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:44,549 INFO L85 PathProgramCache]: Analyzing trace with hash 300674183, now seen corresponding path program 14 times [2021-11-25 20:21:44,549 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:44,549 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231767543] [2021-11-25 20:21:44,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:44,550 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:44,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:44,724 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:44,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231767543] [2021-11-25 20:21:44,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231767543] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:44,724 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:44,724 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 20:21:44,724 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [208768346] [2021-11-25 20:21:44,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:44,725 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:21:44,725 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:44,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:21:44,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:21:44,725 INFO L87 Difference]: Start difference. First operand 15818 states and 55310 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:45,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:45,472 INFO L93 Difference]: Finished difference Result 23456 states and 78764 transitions. [2021-11-25 20:21:45,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:21:45,473 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:45,538 INFO L225 Difference]: With dead ends: 23456 [2021-11-25 20:21:45,538 INFO L226 Difference]: Without dead ends: 23354 [2021-11-25 20:21:45,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:21:45,540 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 168 mSDsluCounter, 501 mSDsCounter, 0 mSdLazyCounter, 970 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:45,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [168 Valid, 0 Invalid, 1075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 970 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:21:45,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23354 states. [2021-11-25 20:21:46,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23354 to 15060. [2021-11-25 20:21:46,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15060 states, 15059 states have (on average 3.485091971578458) internal successors, (52482), 15059 states have internal predecessors, (52482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:46,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15060 states to 15060 states and 52482 transitions. [2021-11-25 20:21:46,190 INFO L78 Accepts]: Start accepts. Automaton has 15060 states and 52482 transitions. Word has length 38 [2021-11-25 20:21:46,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:46,191 INFO L470 AbstractCegarLoop]: Abstraction has 15060 states and 52482 transitions. [2021-11-25 20:21:46,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:46,191 INFO L276 IsEmpty]: Start isEmpty. Operand 15060 states and 52482 transitions. [2021-11-25 20:21:46,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:46,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:46,217 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] [2021-11-25 20:21:46,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-11-25 20:21:46,217 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:46,218 INFO L85 PathProgramCache]: Analyzing trace with hash 575957133, now seen corresponding path program 15 times [2021-11-25 20:21:46,218 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:46,218 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022216659] [2021-11-25 20:21:46,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:46,218 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:46,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:46,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:46,356 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:46,356 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2022216659] [2021-11-25 20:21:46,356 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2022216659] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:46,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:46,357 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:21:46,357 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013673962] [2021-11-25 20:21:46,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:46,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:21:46,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:46,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:21:46,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:21:46,358 INFO L87 Difference]: Start difference. First operand 15060 states and 52482 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:47,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:47,275 INFO L93 Difference]: Finished difference Result 23924 states and 79907 transitions. [2021-11-25 20:21:47,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 20:21:47,276 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:47,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:47,352 INFO L225 Difference]: With dead ends: 23924 [2021-11-25 20:21:47,352 INFO L226 Difference]: Without dead ends: 23708 [2021-11-25 20:21:47,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:21:47,357 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 191 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 907 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 191 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1023 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:47,357 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [191 Valid, 0 Invalid, 1023 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 907 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:21:47,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23708 states. [2021-11-25 20:21:47,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23708 to 15978. [2021-11-25 20:21:47,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15978 states, 15977 states have (on average 3.4697377480127685) internal successors, (55436), 15977 states have internal predecessors, (55436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15978 states to 15978 states and 55436 transitions. [2021-11-25 20:21:47,951 INFO L78 Accepts]: Start accepts. Automaton has 15978 states and 55436 transitions. Word has length 38 [2021-11-25 20:21:47,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:47,952 INFO L470 AbstractCegarLoop]: Abstraction has 15978 states and 55436 transitions. [2021-11-25 20:21:47,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 15978 states and 55436 transitions. [2021-11-25 20:21:47,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:47,979 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:47,979 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:47,979 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-11-25 20:21:47,979 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:47,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:47,980 INFO L85 PathProgramCache]: Analyzing trace with hash 2107307975, now seen corresponding path program 16 times [2021-11-25 20:21:47,980 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:47,980 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1904290470] [2021-11-25 20:21:47,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:47,980 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:48,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:48,137 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:48,137 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:48,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1904290470] [2021-11-25 20:21:48,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1904290470] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:48,139 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:48,140 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:21:48,140 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52336764] [2021-11-25 20:21:48,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:48,141 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:21:48,141 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:48,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:21:48,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:21:48,142 INFO L87 Difference]: Start difference. First operand 15978 states and 55436 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:49,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:49,236 INFO L93 Difference]: Finished difference Result 21934 states and 73530 transitions. [2021-11-25 20:21:49,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 20:21:49,237 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:49,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:49,308 INFO L225 Difference]: With dead ends: 21934 [2021-11-25 20:21:49,309 INFO L226 Difference]: Without dead ends: 21468 [2021-11-25 20:21:49,309 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 214 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:21:49,310 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 244 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1381 mSolverCounterSat, 184 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 184 IncrementalHoareTripleChecker+Valid, 1381 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:49,311 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 0 Invalid, 1565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [184 Valid, 1381 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:21:49,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21468 states. [2021-11-25 20:21:49,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21468 to 15276. [2021-11-25 20:21:49,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15276 states, 15275 states have (on average 3.464026186579378) internal successors, (52913), 15275 states have internal predecessors, (52913), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:50,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15276 states to 15276 states and 52913 transitions. [2021-11-25 20:21:50,031 INFO L78 Accepts]: Start accepts. Automaton has 15276 states and 52913 transitions. Word has length 38 [2021-11-25 20:21:50,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:50,031 INFO L470 AbstractCegarLoop]: Abstraction has 15276 states and 52913 transitions. [2021-11-25 20:21:50,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:50,031 INFO L276 IsEmpty]: Start isEmpty. Operand 15276 states and 52913 transitions. [2021-11-25 20:21:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:50,060 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:50,061 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] [2021-11-25 20:21:50,061 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-11-25 20:21:50,061 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash -1826982801, now seen corresponding path program 17 times [2021-11-25 20:21:50,061 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:50,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [628255595] [2021-11-25 20:21:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:50,062 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:50,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:50,213 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:50,213 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:50,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [628255595] [2021-11-25 20:21:50,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [628255595] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:50,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:50,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:21:50,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [316657816] [2021-11-25 20:21:50,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:50,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:21:50,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:50,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:21:50,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:21:50,215 INFO L87 Difference]: Start difference. First operand 15276 states and 52913 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:50,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:50,790 INFO L93 Difference]: Finished difference Result 25616 states and 83740 transitions. [2021-11-25 20:21:50,791 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:21:50,791 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:50,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:50,861 INFO L225 Difference]: With dead ends: 25616 [2021-11-25 20:21:50,861 INFO L226 Difference]: Without dead ends: 25350 [2021-11-25 20:21:50,862 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=136, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:21:50,862 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 159 mSDsluCounter, 304 mSDsCounter, 0 mSdLazyCounter, 710 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 159 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 710 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:50,863 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [159 Valid, 0 Invalid, 799 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 710 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:21:50,908 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25350 states. [2021-11-25 20:21:51,465 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25350 to 15208. [2021-11-25 20:21:51,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15208 states, 15207 states have (on average 3.4147432103636484) internal successors, (51928), 15207 states have internal predecessors, (51928), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:51,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15208 states to 15208 states and 51928 transitions. [2021-11-25 20:21:51,544 INFO L78 Accepts]: Start accepts. Automaton has 15208 states and 51928 transitions. Word has length 38 [2021-11-25 20:21:51,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:51,544 INFO L470 AbstractCegarLoop]: Abstraction has 15208 states and 51928 transitions. [2021-11-25 20:21:51,544 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:51,545 INFO L276 IsEmpty]: Start isEmpty. Operand 15208 states and 51928 transitions. [2021-11-25 20:21:51,579 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:51,580 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:51,580 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] [2021-11-25 20:21:51,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-11-25 20:21:51,580 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:51,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:51,581 INFO L85 PathProgramCache]: Analyzing trace with hash 661614081, now seen corresponding path program 18 times [2021-11-25 20:21:51,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:51,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496871867] [2021-11-25 20:21:51,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:51,581 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:51,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:51,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:51,730 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:51,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496871867] [2021-11-25 20:21:51,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496871867] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:51,731 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:51,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-25 20:21:51,731 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [838983660] [2021-11-25 20:21:51,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:51,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-25 20:21:51,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:51,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-25 20:21:51,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:21:51,733 INFO L87 Difference]: Start difference. First operand 15208 states and 51928 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:52,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:52,596 INFO L93 Difference]: Finished difference Result 25750 states and 81157 transitions. [2021-11-25 20:21:52,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:21:52,597 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:52,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:52,676 INFO L225 Difference]: With dead ends: 25750 [2021-11-25 20:21:52,676 INFO L226 Difference]: Without dead ends: 25388 [2021-11-25 20:21:52,677 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=203, Unknown=0, NotChecked=0, Total=306 [2021-11-25 20:21:52,678 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 172 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 929 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:52,678 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [172 Valid, 0 Invalid, 929 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:21:52,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25388 states. [2021-11-25 20:21:53,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25388 to 16768. [2021-11-25 20:21:53,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16768 states, 16767 states have (on average 3.299994035903859) internal successors, (55331), 16767 states have internal predecessors, (55331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16768 states to 16768 states and 55331 transitions. [2021-11-25 20:21:53,375 INFO L78 Accepts]: Start accepts. Automaton has 16768 states and 55331 transitions. Word has length 38 [2021-11-25 20:21:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:53,378 INFO L470 AbstractCegarLoop]: Abstraction has 16768 states and 55331 transitions. [2021-11-25 20:21:53,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 9 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:53,379 INFO L276 IsEmpty]: Start isEmpty. Operand 16768 states and 55331 transitions. [2021-11-25 20:21:53,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:53,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:53,410 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:21:53,411 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-11-25 20:21:53,411 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:53,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:53,412 INFO L85 PathProgramCache]: Analyzing trace with hash -306060625, now seen corresponding path program 19 times [2021-11-25 20:21:53,412 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:53,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403270256] [2021-11-25 20:21:53,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:53,412 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:53,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:53,575 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:53,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403270256] [2021-11-25 20:21:53,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1403270256] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:53,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:53,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:21:53,576 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [441952115] [2021-11-25 20:21:53,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:53,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:21:53,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:53,577 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:21:53,577 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:21:53,577 INFO L87 Difference]: Start difference. First operand 16768 states and 55331 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:54,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:54,625 INFO L93 Difference]: Finished difference Result 28142 states and 87232 transitions. [2021-11-25 20:21:54,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 20:21:54,626 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:54,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:54,692 INFO L225 Difference]: With dead ends: 28142 [2021-11-25 20:21:54,693 INFO L226 Difference]: Without dead ends: 27568 [2021-11-25 20:21:54,693 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:21:54,694 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 185 mSDsluCounter, 528 mSDsCounter, 0 mSdLazyCounter, 1138 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 1138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:54,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [185 Valid, 0 Invalid, 1255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 1138 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:21:54,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27568 states. [2021-11-25 20:21:55,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27568 to 17468. [2021-11-25 20:21:55,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17468 states, 17467 states have (on average 3.285509818514914) internal successors, (57388), 17467 states have internal predecessors, (57388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:55,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17468 states to 17468 states and 57388 transitions. [2021-11-25 20:21:55,334 INFO L78 Accepts]: Start accepts. Automaton has 17468 states and 57388 transitions. Word has length 38 [2021-11-25 20:21:55,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:55,334 INFO L470 AbstractCegarLoop]: Abstraction has 17468 states and 57388 transitions. [2021-11-25 20:21:55,335 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:55,335 INFO L276 IsEmpty]: Start isEmpty. Operand 17468 states and 57388 transitions. [2021-11-25 20:21:55,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:55,365 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:55,366 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] [2021-11-25 20:21:55,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-11-25 20:21:55,366 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:55,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:55,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1238471295, now seen corresponding path program 20 times [2021-11-25 20:21:55,367 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:55,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1671888762] [2021-11-25 20:21:55,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:55,368 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:55,528 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:55,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:55,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1671888762] [2021-11-25 20:21:55,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1671888762] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:55,529 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:55,529 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:21:55,529 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1968073427] [2021-11-25 20:21:55,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:55,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:21:55,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:55,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:21:55,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:21:55,530 INFO L87 Difference]: Start difference. First operand 17468 states and 57388 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:56,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:56,726 INFO L93 Difference]: Finished difference Result 25194 states and 78612 transitions. [2021-11-25 20:21:56,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 20:21:56,727 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:56,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:56,788 INFO L225 Difference]: With dead ends: 25194 [2021-11-25 20:21:56,788 INFO L226 Difference]: Without dead ends: 24350 [2021-11-25 20:21:56,789 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:21:56,789 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 228 mSDsluCounter, 637 mSDsCounter, 0 mSdLazyCounter, 1452 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1633 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 1452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:56,790 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [228 Valid, 0 Invalid, 1633 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 1452 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:21:56,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24350 states. [2021-11-25 20:21:57,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24350 to 16164. [2021-11-25 20:21:57,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16164 states, 16163 states have (on average 3.2938810864319743) internal successors, (53239), 16163 states have internal predecessors, (53239), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:57,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16164 states to 16164 states and 53239 transitions. [2021-11-25 20:21:57,397 INFO L78 Accepts]: Start accepts. Automaton has 16164 states and 53239 transitions. Word has length 38 [2021-11-25 20:21:57,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:57,397 INFO L470 AbstractCegarLoop]: Abstraction has 16164 states and 53239 transitions. [2021-11-25 20:21:57,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:57,397 INFO L276 IsEmpty]: Start isEmpty. Operand 16164 states and 53239 transitions. [2021-11-25 20:21:57,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:57,427 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:57,427 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] [2021-11-25 20:21:57,428 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-11-25 20:21:57,428 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:57,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:57,428 INFO L85 PathProgramCache]: Analyzing trace with hash 53455223, now seen corresponding path program 21 times [2021-11-25 20:21:57,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:57,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916420127] [2021-11-25 20:21:57,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:57,429 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:57,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:57,583 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:57,583 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:57,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916420127] [2021-11-25 20:21:57,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916420127] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:57,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:57,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 20:21:57,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873716285] [2021-11-25 20:21:57,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:57,587 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 20:21:57,587 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:57,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 20:21:57,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-25 20:21:57,588 INFO L87 Difference]: Start difference. First operand 16164 states and 53239 transitions. Second operand has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:57,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:21:57,952 INFO L93 Difference]: Finished difference Result 27298 states and 81969 transitions. [2021-11-25 20:21:57,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:21:57,952 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:21:57,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:21:58,023 INFO L225 Difference]: With dead ends: 27298 [2021-11-25 20:21:58,023 INFO L226 Difference]: Without dead ends: 26620 [2021-11-25 20:21:58,023 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:21:58,024 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 69 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 442 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 442 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:21:58,025 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [69 Valid, 0 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 442 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:21:58,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26620 states. [2021-11-25 20:21:58,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26620 to 18316. [2021-11-25 20:21:58,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18316 states, 18315 states have (on average 3.076986076986077) internal successors, (56355), 18315 states have internal predecessors, (56355), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:58,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18316 states to 18316 states and 56355 transitions. [2021-11-25 20:21:58,890 INFO L78 Accepts]: Start accepts. Automaton has 18316 states and 56355 transitions. Word has length 38 [2021-11-25 20:21:58,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:21:58,891 INFO L470 AbstractCegarLoop]: Abstraction has 18316 states and 56355 transitions. [2021-11-25 20:21:58,892 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.428571428571429) internal successors, (38), 6 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:21:58,892 INFO L276 IsEmpty]: Start isEmpty. Operand 18316 states and 56355 transitions. [2021-11-25 20:21:58,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:21:58,930 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:21:58,930 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] [2021-11-25 20:21:58,930 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-11-25 20:21:58,930 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:21:58,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:21:58,931 INFO L85 PathProgramCache]: Analyzing trace with hash -51076547, now seen corresponding path program 22 times [2021-11-25 20:21:58,931 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:21:58,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [275620015] [2021-11-25 20:21:58,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:21:58,932 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:21:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:21:59,147 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:21:59,147 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:21:59,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [275620015] [2021-11-25 20:21:59,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [275620015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:21:59,148 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:21:59,148 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:21:59,148 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [406358336] [2021-11-25 20:21:59,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:21:59,149 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:21:59,149 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:21:59,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:21:59,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:21:59,150 INFO L87 Difference]: Start difference. First operand 18316 states and 56355 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:00,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:00,002 INFO L93 Difference]: Finished difference Result 29452 states and 81586 transitions. [2021-11-25 20:22:00,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:22:00,003 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:00,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:00,103 INFO L225 Difference]: With dead ends: 29452 [2021-11-25 20:22:00,103 INFO L226 Difference]: Without dead ends: 27432 [2021-11-25 20:22:00,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=138, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:22:00,112 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 133 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 800 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 800 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:00,112 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [133 Valid, 0 Invalid, 869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 800 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:22:00,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27432 states. [2021-11-25 20:22:00,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27432 to 18704. [2021-11-25 20:22:00,622 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18704 states, 18703 states have (on average 2.89023151366091) internal successors, (54056), 18703 states have internal predecessors, (54056), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:00,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18704 states to 18704 states and 54056 transitions. [2021-11-25 20:22:00,739 INFO L78 Accepts]: Start accepts. Automaton has 18704 states and 54056 transitions. Word has length 38 [2021-11-25 20:22:00,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:00,739 INFO L470 AbstractCegarLoop]: Abstraction has 18704 states and 54056 transitions. [2021-11-25 20:22:00,739 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:00,740 INFO L276 IsEmpty]: Start isEmpty. Operand 18704 states and 54056 transitions. [2021-11-25 20:22:00,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:00,789 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:00,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:00,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-11-25 20:22:00,790 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:00,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:00,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1402693561, now seen corresponding path program 23 times [2021-11-25 20:22:00,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:00,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006223599] [2021-11-25 20:22:00,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:00,791 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:01,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:01,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:01,341 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:01,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006223599] [2021-11-25 20:22:01,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006223599] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:01,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:01,342 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-25 20:22:01,343 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762803427] [2021-11-25 20:22:01,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:01,343 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-25 20:22:01,344 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:01,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-25 20:22:01,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2021-11-25 20:22:01,344 INFO L87 Difference]: Start difference. First operand 18704 states and 54056 transitions. Second operand has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:02,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:02,220 INFO L93 Difference]: Finished difference Result 28014 states and 75364 transitions. [2021-11-25 20:22:02,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-11-25 20:22:02,221 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:02,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:02,280 INFO L225 Difference]: With dead ends: 28014 [2021-11-25 20:22:02,281 INFO L226 Difference]: Without dead ends: 26152 [2021-11-25 20:22:02,281 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:22:02,282 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 181 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 181 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:02,282 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [181 Valid, 0 Invalid, 1314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:22:02,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26152 states. [2021-11-25 20:22:02,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26152 to 17992. [2021-11-25 20:22:02,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17992 states, 17991 states have (on average 2.817019620921572) internal successors, (50681), 17991 states have internal predecessors, (50681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:02,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17992 states to 17992 states and 50681 transitions. [2021-11-25 20:22:02,746 INFO L78 Accepts]: Start accepts. Automaton has 17992 states and 50681 transitions. Word has length 38 [2021-11-25 20:22:02,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:02,746 INFO L470 AbstractCegarLoop]: Abstraction has 17992 states and 50681 transitions. [2021-11-25 20:22:02,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 17992 states and 50681 transitions. [2021-11-25 20:22:02,775 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:02,775 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:02,775 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] [2021-11-25 20:22:02,776 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-11-25 20:22:02,776 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:02,776 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:02,776 INFO L85 PathProgramCache]: Analyzing trace with hash -971828157, now seen corresponding path program 24 times [2021-11-25 20:22:02,777 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:02,777 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942710396] [2021-11-25 20:22:02,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:02,777 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:02,945 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:02,945 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942710396] [2021-11-25 20:22:02,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942710396] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:02,946 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:02,946 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:02,947 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477403414] [2021-11-25 20:22:02,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:02,949 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:02,949 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:02,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:02,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:02,950 INFO L87 Difference]: Start difference. First operand 17992 states and 50681 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:04,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:04,410 INFO L93 Difference]: Finished difference Result 23494 states and 62703 transitions. [2021-11-25 20:22:04,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-11-25 20:22:04,410 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:04,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:04,457 INFO L225 Difference]: With dead ends: 23494 [2021-11-25 20:22:04,457 INFO L226 Difference]: Without dead ends: 22226 [2021-11-25 20:22:04,458 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=329, Invalid=727, Unknown=0, NotChecked=0, Total=1056 [2021-11-25 20:22:04,458 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 210 mSDsluCounter, 722 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 210 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:04,459 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [210 Valid, 0 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-25 20:22:04,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22226 states. [2021-11-25 20:22:04,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22226 to 16446. [2021-11-25 20:22:04,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16446 states, 16445 states have (on average 2.8111888111888113) internal successors, (46230), 16445 states have internal predecessors, (46230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:04,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16446 states to 16446 states and 46230 transitions. [2021-11-25 20:22:04,824 INFO L78 Accepts]: Start accepts. Automaton has 16446 states and 46230 transitions. Word has length 38 [2021-11-25 20:22:04,824 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:04,825 INFO L470 AbstractCegarLoop]: Abstraction has 16446 states and 46230 transitions. [2021-11-25 20:22:04,825 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:04,825 INFO L276 IsEmpty]: Start isEmpty. Operand 16446 states and 46230 transitions. [2021-11-25 20:22:04,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:04,850 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:04,851 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] [2021-11-25 20:22:04,851 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-11-25 20:22:04,851 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:04,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:04,851 INFO L85 PathProgramCache]: Analyzing trace with hash 2088135139, now seen corresponding path program 25 times [2021-11-25 20:22:04,851 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:04,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886007952] [2021-11-25 20:22:04,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:04,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:04,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:05,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:05,066 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:05,066 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886007952] [2021-11-25 20:22:05,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886007952] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:05,066 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:05,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:05,067 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700769737] [2021-11-25 20:22:05,067 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:05,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:05,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:05,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:05,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:05,068 INFO L87 Difference]: Start difference. First operand 16446 states and 46230 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:05,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:05,852 INFO L93 Difference]: Finished difference Result 28038 states and 74959 transitions. [2021-11-25 20:22:05,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:22:05,852 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:05,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:05,926 INFO L225 Difference]: With dead ends: 28038 [2021-11-25 20:22:05,926 INFO L226 Difference]: Without dead ends: 28022 [2021-11-25 20:22:05,926 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:22:05,927 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 121 mSDsluCounter, 447 mSDsCounter, 0 mSdLazyCounter, 975 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1065 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 975 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:05,927 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [121 Valid, 0 Invalid, 1065 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 975 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:22:05,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28022 states. [2021-11-25 20:22:06,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28022 to 16566. [2021-11-25 20:22:06,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16566 states, 16565 states have (on average 2.8074856625415032) internal successors, (46506), 16565 states have internal predecessors, (46506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:06,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16566 states to 16566 states and 46506 transitions. [2021-11-25 20:22:06,419 INFO L78 Accepts]: Start accepts. Automaton has 16566 states and 46506 transitions. Word has length 38 [2021-11-25 20:22:06,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:06,419 INFO L470 AbstractCegarLoop]: Abstraction has 16566 states and 46506 transitions. [2021-11-25 20:22:06,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:06,420 INFO L276 IsEmpty]: Start isEmpty. Operand 16566 states and 46506 transitions. [2021-11-25 20:22:06,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:06,446 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:06,446 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] [2021-11-25 20:22:06,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-11-25 20:22:06,447 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:06,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:06,447 INFO L85 PathProgramCache]: Analyzing trace with hash 63853493, now seen corresponding path program 26 times [2021-11-25 20:22:06,447 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:06,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652491642] [2021-11-25 20:22:06,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:06,447 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:06,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:06,622 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:06,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652491642] [2021-11-25 20:22:06,622 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [652491642] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:06,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:06,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:06,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526952698] [2021-11-25 20:22:06,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:06,623 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:06,623 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:06,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:06,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:06,624 INFO L87 Difference]: Start difference. First operand 16566 states and 46506 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:07,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:07,563 INFO L93 Difference]: Finished difference Result 25646 states and 68879 transitions. [2021-11-25 20:22:07,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:22:07,563 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:07,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:07,620 INFO L225 Difference]: With dead ends: 25646 [2021-11-25 20:22:07,620 INFO L226 Difference]: Without dead ends: 25560 [2021-11-25 20:22:07,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-25 20:22:07,621 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 127 mSDsluCounter, 588 mSDsCounter, 0 mSdLazyCounter, 1298 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:07,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [127 Valid, 0 Invalid, 1449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1298 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:22:07,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25560 states. [2021-11-25 20:22:08,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25560 to 16542. [2021-11-25 20:22:08,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16542 states, 16541 states have (on average 2.8033371622030105) internal successors, (46370), 16541 states have internal predecessors, (46370), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:08,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16542 states to 16542 states and 46370 transitions. [2021-11-25 20:22:08,095 INFO L78 Accepts]: Start accepts. Automaton has 16542 states and 46370 transitions. Word has length 38 [2021-11-25 20:22:08,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:08,095 INFO L470 AbstractCegarLoop]: Abstraction has 16542 states and 46370 transitions. [2021-11-25 20:22:08,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:08,095 INFO L276 IsEmpty]: Start isEmpty. Operand 16542 states and 46370 transitions. [2021-11-25 20:22:08,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:08,119 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:08,119 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] [2021-11-25 20:22:08,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-11-25 20:22:08,119 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:08,120 INFO L85 PathProgramCache]: Analyzing trace with hash -851749399, now seen corresponding path program 27 times [2021-11-25 20:22:08,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:08,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587345572] [2021-11-25 20:22:08,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:08,120 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:08,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:08,292 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:08,292 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:08,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587345572] [2021-11-25 20:22:08,293 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587345572] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:08,293 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:08,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:08,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843410469] [2021-11-25 20:22:08,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:08,294 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:08,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:08,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:08,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:08,295 INFO L87 Difference]: Start difference. First operand 16542 states and 46370 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:08,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:08,809 INFO L93 Difference]: Finished difference Result 17030 states and 47202 transitions. [2021-11-25 20:22:08,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-11-25 20:22:08,810 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:08,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:08,856 INFO L225 Difference]: With dead ends: 17030 [2021-11-25 20:22:08,856 INFO L226 Difference]: Without dead ends: 16902 [2021-11-25 20:22:08,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-11-25 20:22:08,858 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:08,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:08,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16902 states. [2021-11-25 20:22:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16902 to 16494. [2021-11-25 20:22:09,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16494 states, 16493 states have (on average 2.80421997210938) internal successors, (46250), 16493 states have internal predecessors, (46250), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16494 states to 16494 states and 46250 transitions. [2021-11-25 20:22:09,188 INFO L78 Accepts]: Start accepts. Automaton has 16494 states and 46250 transitions. Word has length 38 [2021-11-25 20:22:09,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:09,189 INFO L470 AbstractCegarLoop]: Abstraction has 16494 states and 46250 transitions. [2021-11-25 20:22:09,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 16494 states and 46250 transitions. [2021-11-25 20:22:09,214 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:09,214 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:09,215 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] [2021-11-25 20:22:09,215 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-11-25 20:22:09,215 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash -1939630455, now seen corresponding path program 28 times [2021-11-25 20:22:09,215 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:09,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864136764] [2021-11-25 20:22:09,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:09,216 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:09,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:09,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:09,392 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:09,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1864136764] [2021-11-25 20:22:09,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1864136764] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:09,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:09,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:09,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421890377] [2021-11-25 20:22:09,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:09,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:09,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:09,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:09,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:09,394 INFO L87 Difference]: Start difference. First operand 16494 states and 46250 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:09,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:09,906 INFO L93 Difference]: Finished difference Result 16892 states and 46974 transitions. [2021-11-25 20:22:09,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:22:09,907 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:09,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:09,938 INFO L225 Difference]: With dead ends: 16892 [2021-11-25 20:22:09,938 INFO L226 Difference]: Without dead ends: 16716 [2021-11-25 20:22:09,939 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:22:09,939 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 769 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 818 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 769 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:09,939 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 818 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 769 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:22:09,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16716 states. [2021-11-25 20:22:10,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16716 to 16446. [2021-11-25 20:22:10,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16446 states, 16445 states have (on average 2.805107935542718) internal successors, (46130), 16445 states have internal predecessors, (46130), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:10,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16446 states to 16446 states and 46130 transitions. [2021-11-25 20:22:10,231 INFO L78 Accepts]: Start accepts. Automaton has 16446 states and 46130 transitions. Word has length 38 [2021-11-25 20:22:10,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:10,231 INFO L470 AbstractCegarLoop]: Abstraction has 16446 states and 46130 transitions. [2021-11-25 20:22:10,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:10,232 INFO L276 IsEmpty]: Start isEmpty. Operand 16446 states and 46130 transitions. [2021-11-25 20:22:10,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:10,258 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:10,258 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] [2021-11-25 20:22:10,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-11-25 20:22:10,259 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:10,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:10,259 INFO L85 PathProgramCache]: Analyzing trace with hash 2119467181, now seen corresponding path program 29 times [2021-11-25 20:22:10,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:10,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844840383] [2021-11-25 20:22:10,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:10,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:10,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:10,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:10,434 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:10,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844840383] [2021-11-25 20:22:10,435 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844840383] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:10,435 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:10,435 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:10,435 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179181902] [2021-11-25 20:22:10,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:10,436 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:10,436 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:10,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:10,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:10,437 INFO L87 Difference]: Start difference. First operand 16446 states and 46130 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:10,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:10,939 INFO L93 Difference]: Finished difference Result 16892 states and 46926 transitions. [2021-11-25 20:22:10,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-25 20:22:10,940 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:10,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:10,986 INFO L225 Difference]: With dead ends: 16892 [2021-11-25 20:22:10,986 INFO L226 Difference]: Without dead ends: 16668 [2021-11-25 20:22:10,987 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2021-11-25 20:22:10,992 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 60 mSDsluCounter, 340 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:10,992 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 0 Invalid, 718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:11,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16668 states. [2021-11-25 20:22:11,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16668 to 16398. [2021-11-25 20:22:11,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16398 states, 16397 states have (on average 2.8060010977617855) internal successors, (46010), 16397 states have internal predecessors, (46010), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:11,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16398 states to 16398 states and 46010 transitions. [2021-11-25 20:22:11,501 INFO L78 Accepts]: Start accepts. Automaton has 16398 states and 46010 transitions. Word has length 38 [2021-11-25 20:22:11,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:11,502 INFO L470 AbstractCegarLoop]: Abstraction has 16398 states and 46010 transitions. [2021-11-25 20:22:11,502 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:11,502 INFO L276 IsEmpty]: Start isEmpty. Operand 16398 states and 46010 transitions. [2021-11-25 20:22:11,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:11,525 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:11,525 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] [2021-11-25 20:22:11,525 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-11-25 20:22:11,525 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:11,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:11,526 INFO L85 PathProgramCache]: Analyzing trace with hash -310398391, now seen corresponding path program 30 times [2021-11-25 20:22:11,526 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:11,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984839114] [2021-11-25 20:22:11,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:11,526 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:11,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:11,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:11,706 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:11,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984839114] [2021-11-25 20:22:11,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984839114] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:11,707 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:11,707 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:11,707 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302617908] [2021-11-25 20:22:11,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:11,708 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:11,708 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:11,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:11,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:11,709 INFO L87 Difference]: Start difference. First operand 16398 states and 46010 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:12,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:12,317 INFO L93 Difference]: Finished difference Result 16582 states and 46350 transitions. [2021-11-25 20:22:12,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 20:22:12,318 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:12,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:12,350 INFO L225 Difference]: With dead ends: 16582 [2021-11-25 20:22:12,350 INFO L226 Difference]: Without dead ends: 16548 [2021-11-25 20:22:12,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:22:12,351 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 49 mSDsluCounter, 337 mSDsCounter, 0 mSdLazyCounter, 760 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 835 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 760 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:12,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 0 Invalid, 835 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 760 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:12,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16548 states. [2021-11-25 20:22:12,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16548 to 16422. [2021-11-25 20:22:12,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16422 states, 16421 states have (on average 2.8044577065952137) internal successors, (46052), 16421 states have internal predecessors, (46052), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:12,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16422 states to 16422 states and 46052 transitions. [2021-11-25 20:22:12,633 INFO L78 Accepts]: Start accepts. Automaton has 16422 states and 46052 transitions. Word has length 38 [2021-11-25 20:22:12,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:12,633 INFO L470 AbstractCegarLoop]: Abstraction has 16422 states and 46052 transitions. [2021-11-25 20:22:12,633 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:12,634 INFO L276 IsEmpty]: Start isEmpty. Operand 16422 states and 46052 transitions. [2021-11-25 20:22:12,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:12,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:12,657 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:12,657 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-11-25 20:22:12,658 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:12,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:12,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1607350423, now seen corresponding path program 31 times [2021-11-25 20:22:12,658 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:12,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406036639] [2021-11-25 20:22:12,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:12,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:12,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:12,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:12,852 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:12,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406036639] [2021-11-25 20:22:12,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406036639] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:12,852 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:12,852 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:12,852 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [902279323] [2021-11-25 20:22:12,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:12,853 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:12,853 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:12,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:12,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:12,853 INFO L87 Difference]: Start difference. First operand 16422 states and 46052 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:13,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:13,637 INFO L93 Difference]: Finished difference Result 28352 states and 75153 transitions. [2021-11-25 20:22:13,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 20:22:13,638 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:13,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:13,922 INFO L225 Difference]: With dead ends: 28352 [2021-11-25 20:22:13,923 INFO L226 Difference]: Without dead ends: 28340 [2021-11-25 20:22:13,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:22:13,923 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 128 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 1044 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 1044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:13,924 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 0 Invalid, 1127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 1044 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:22:13,963 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28340 states. [2021-11-25 20:22:14,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28340 to 16458. [2021-11-25 20:22:14,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16458 states, 16457 states have (on average 2.8025156468372123) internal successors, (46121), 16457 states have internal predecessors, (46121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:14,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16458 states to 16458 states and 46121 transitions. [2021-11-25 20:22:14,296 INFO L78 Accepts]: Start accepts. Automaton has 16458 states and 46121 transitions. Word has length 38 [2021-11-25 20:22:14,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:14,296 INFO L470 AbstractCegarLoop]: Abstraction has 16458 states and 46121 transitions. [2021-11-25 20:22:14,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:14,296 INFO L276 IsEmpty]: Start isEmpty. Operand 16458 states and 46121 transitions. [2021-11-25 20:22:14,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:14,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:14,320 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] [2021-11-25 20:22:14,320 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-11-25 20:22:14,320 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:14,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:14,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1104837429, now seen corresponding path program 32 times [2021-11-25 20:22:14,321 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:14,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479717937] [2021-11-25 20:22:14,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:14,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:14,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:14,481 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:14,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479717937] [2021-11-25 20:22:14,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479717937] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:14,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:14,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:14,482 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392655709] [2021-11-25 20:22:14,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:14,482 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:14,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:14,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:14,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:14,483 INFO L87 Difference]: Start difference. First operand 16458 states and 46121 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:15,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:15,106 INFO L93 Difference]: Finished difference Result 16766 states and 46671 transitions. [2021-11-25 20:22:15,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:22:15,107 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:15,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:15,140 INFO L225 Difference]: With dead ends: 16766 [2021-11-25 20:22:15,140 INFO L226 Difference]: Without dead ends: 16744 [2021-11-25 20:22:15,140 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-25 20:22:15,141 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 733 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 733 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:15,141 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 733 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:15,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16744 states. [2021-11-25 20:22:15,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16744 to 16446. [2021-11-25 20:22:15,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16446 states, 16445 states have (on average 2.8021891152325935) internal successors, (46082), 16445 states have internal predecessors, (46082), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:15,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16446 states to 16446 states and 46082 transitions. [2021-11-25 20:22:15,629 INFO L78 Accepts]: Start accepts. Automaton has 16446 states and 46082 transitions. Word has length 38 [2021-11-25 20:22:15,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:15,629 INFO L470 AbstractCegarLoop]: Abstraction has 16446 states and 46082 transitions. [2021-11-25 20:22:15,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:15,630 INFO L276 IsEmpty]: Start isEmpty. Operand 16446 states and 46082 transitions. [2021-11-25 20:22:15,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:15,662 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:15,662 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] [2021-11-25 20:22:15,662 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-11-25 20:22:15,662 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:15,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:15,663 INFO L85 PathProgramCache]: Analyzing trace with hash 341835019, now seen corresponding path program 33 times [2021-11-25 20:22:15,663 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:15,663 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971524617] [2021-11-25 20:22:15,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:15,663 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:15,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:15,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:15,834 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:15,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971524617] [2021-11-25 20:22:15,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971524617] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:15,835 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:15,835 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:15,835 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339501495] [2021-11-25 20:22:15,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:15,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:15,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:15,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:15,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:15,837 INFO L87 Difference]: Start difference. First operand 16446 states and 46082 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:16,446 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:16,446 INFO L93 Difference]: Finished difference Result 16690 states and 46518 transitions. [2021-11-25 20:22:16,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 20:22:16,447 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:16,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:16,486 INFO L225 Difference]: With dead ends: 16690 [2021-11-25 20:22:16,487 INFO L226 Difference]: Without dead ends: 16620 [2021-11-25 20:22:16,487 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:22:16,488 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 54 mSDsluCounter, 233 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:16,488 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [54 Valid, 0 Invalid, 703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:16,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16620 states. [2021-11-25 20:22:16,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16620 to 16398. [2021-11-25 20:22:16,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16398 states, 16397 states have (on average 2.8045374153808624) internal successors, (45986), 16397 states have internal predecessors, (45986), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:16,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16398 states to 16398 states and 45986 transitions. [2021-11-25 20:22:16,837 INFO L78 Accepts]: Start accepts. Automaton has 16398 states and 45986 transitions. Word has length 38 [2021-11-25 20:22:16,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:16,837 INFO L470 AbstractCegarLoop]: Abstraction has 16398 states and 45986 transitions. [2021-11-25 20:22:16,837 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:16,837 INFO L276 IsEmpty]: Start isEmpty. Operand 16398 states and 45986 transitions. [2021-11-25 20:22:16,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:16,868 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:16,868 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] [2021-11-25 20:22:16,868 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-11-25 20:22:16,869 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:16,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:16,869 INFO L85 PathProgramCache]: Analyzing trace with hash 73907087, now seen corresponding path program 34 times [2021-11-25 20:22:16,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:16,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779401345] [2021-11-25 20:22:16,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:16,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:16,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:17,072 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:17,072 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:17,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779401345] [2021-11-25 20:22:17,073 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779401345] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:17,073 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:17,073 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:17,073 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [193172589] [2021-11-25 20:22:17,073 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:17,074 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:17,074 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:17,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:17,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:17,075 INFO L87 Difference]: Start difference. First operand 16398 states and 45986 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:17,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:17,672 INFO L93 Difference]: Finished difference Result 16504 states and 46179 transitions. [2021-11-25 20:22:17,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:22:17,672 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:17,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:17,726 INFO L225 Difference]: With dead ends: 16504 [2021-11-25 20:22:17,726 INFO L226 Difference]: Without dead ends: 16410 [2021-11-25 20:22:17,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:22:17,727 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 43 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 642 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 642 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:17,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [43 Valid, 0 Invalid, 691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 642 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:17,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16410 states. [2021-11-25 20:22:18,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16410 to 16338. [2021-11-25 20:22:18,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16338 states, 16337 states have (on average 2.8078594601211972) internal successors, (45872), 16337 states have internal predecessors, (45872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:18,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16338 states to 16338 states and 45872 transitions. [2021-11-25 20:22:18,297 INFO L78 Accepts]: Start accepts. Automaton has 16338 states and 45872 transitions. Word has length 38 [2021-11-25 20:22:18,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:18,297 INFO L470 AbstractCegarLoop]: Abstraction has 16338 states and 45872 transitions. [2021-11-25 20:22:18,297 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:18,297 INFO L276 IsEmpty]: Start isEmpty. Operand 16338 states and 45872 transitions. [2021-11-25 20:22:18,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:18,321 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:18,321 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] [2021-11-25 20:22:18,321 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-11-25 20:22:18,321 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:18,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:18,322 INFO L85 PathProgramCache]: Analyzing trace with hash -98479399, now seen corresponding path program 35 times [2021-11-25 20:22:18,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:18,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476076005] [2021-11-25 20:22:18,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:18,323 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:18,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:18,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:18,564 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:18,565 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476076005] [2021-11-25 20:22:18,565 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476076005] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:18,565 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:18,565 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 20:22:18,565 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298109737] [2021-11-25 20:22:18,565 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:18,565 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:22:18,565 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:18,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:22:18,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:22:18,566 INFO L87 Difference]: Start difference. First operand 16338 states and 45872 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:19,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:19,279 INFO L93 Difference]: Finished difference Result 16478 states and 46124 transitions. [2021-11-25 20:22:19,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 20:22:19,280 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:19,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:19,311 INFO L225 Difference]: With dead ends: 16478 [2021-11-25 20:22:19,311 INFO L226 Difference]: Without dead ends: 16444 [2021-11-25 20:22:19,312 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 148 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=249, Invalid=621, Unknown=0, NotChecked=0, Total=870 [2021-11-25 20:22:19,312 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 58 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 727 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 58 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:19,312 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [58 Valid, 0 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 727 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:19,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16444 states. [2021-11-25 20:22:19,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16444 to 16350. [2021-11-25 20:22:19,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16350 states, 16349 states have (on average 2.8068995045568537) internal successors, (45890), 16349 states have internal predecessors, (45890), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:19,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16350 states to 16350 states and 45890 transitions. [2021-11-25 20:22:19,607 INFO L78 Accepts]: Start accepts. Automaton has 16350 states and 45890 transitions. Word has length 38 [2021-11-25 20:22:19,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:19,608 INFO L470 AbstractCegarLoop]: Abstraction has 16350 states and 45890 transitions. [2021-11-25 20:22:19,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:19,608 INFO L276 IsEmpty]: Start isEmpty. Operand 16350 states and 45890 transitions. [2021-11-25 20:22:19,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:19,643 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:19,643 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] [2021-11-25 20:22:19,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-11-25 20:22:19,644 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:19,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:19,644 INFO L85 PathProgramCache]: Analyzing trace with hash -562727463, now seen corresponding path program 36 times [2021-11-25 20:22:19,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:19,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929702197] [2021-11-25 20:22:19,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:19,645 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:19,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:19,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:19,821 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:19,821 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929702197] [2021-11-25 20:22:19,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929702197] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:19,821 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:19,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:19,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164854266] [2021-11-25 20:22:19,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:19,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:19,822 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:19,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:19,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:19,823 INFO L87 Difference]: Start difference. First operand 16350 states and 45890 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:20,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:20,708 INFO L93 Difference]: Finished difference Result 28400 states and 75349 transitions. [2021-11-25 20:22:20,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 20:22:20,708 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:20,708 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:20,794 INFO L225 Difference]: With dead ends: 28400 [2021-11-25 20:22:20,794 INFO L226 Difference]: Without dead ends: 28392 [2021-11-25 20:22:20,795 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:22:20,796 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 136 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:20,799 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [136 Valid, 0 Invalid, 1015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:22:20,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28392 states. [2021-11-25 20:22:21,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28392 to 16368. [2021-11-25 20:22:21,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16368 states, 16367 states have (on average 2.806195393169182) internal successors, (45929), 16367 states have internal predecessors, (45929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:21,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16368 states to 16368 states and 45929 transitions. [2021-11-25 20:22:21,259 INFO L78 Accepts]: Start accepts. Automaton has 16368 states and 45929 transitions. Word has length 38 [2021-11-25 20:22:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:21,259 INFO L470 AbstractCegarLoop]: Abstraction has 16368 states and 45929 transitions. [2021-11-25 20:22:21,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 16368 states and 45929 transitions. [2021-11-25 20:22:21,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:21,285 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:21,285 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] [2021-11-25 20:22:21,285 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-11-25 20:22:21,286 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:21,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:21,286 INFO L85 PathProgramCache]: Analyzing trace with hash 411393861, now seen corresponding path program 37 times [2021-11-25 20:22:21,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:21,286 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [923684212] [2021-11-25 20:22:21,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:21,286 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:21,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:21,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:21,465 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:21,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [923684212] [2021-11-25 20:22:21,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [923684212] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:21,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:21,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:21,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579822770] [2021-11-25 20:22:21,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:21,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:21,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:21,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:21,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:21,467 INFO L87 Difference]: Start difference. First operand 16368 states and 45929 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:22,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:22,108 INFO L93 Difference]: Finished difference Result 16594 states and 46326 transitions. [2021-11-25 20:22:22,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:22:22,109 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:22,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:22,159 INFO L225 Difference]: With dead ends: 16594 [2021-11-25 20:22:22,159 INFO L226 Difference]: Without dead ends: 16578 [2021-11-25 20:22:22,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-25 20:22:22,160 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 57 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 781 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 849 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 781 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:22,161 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 0 Invalid, 849 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 781 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:22:22,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16578 states. [2021-11-25 20:22:22,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16578 to 16362. [2021-11-25 20:22:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16362 states, 16361 states have (on average 2.805940957154208) internal successors, (45908), 16361 states have internal predecessors, (45908), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:22,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16362 states to 16362 states and 45908 transitions. [2021-11-25 20:22:22,603 INFO L78 Accepts]: Start accepts. Automaton has 16362 states and 45908 transitions. Word has length 38 [2021-11-25 20:22:22,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:22,603 INFO L470 AbstractCegarLoop]: Abstraction has 16362 states and 45908 transitions. [2021-11-25 20:22:22,603 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:22,603 INFO L276 IsEmpty]: Start isEmpty. Operand 16362 states and 45908 transitions. [2021-11-25 20:22:22,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:22,630 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:22,630 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] [2021-11-25 20:22:22,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-11-25 20:22:22,631 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:22,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:22,631 INFO L85 PathProgramCache]: Analyzing trace with hash -994404609, now seen corresponding path program 38 times [2021-11-25 20:22:22,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:22,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1943822592] [2021-11-25 20:22:22,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:22,632 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:22,839 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:22,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1943822592] [2021-11-25 20:22:22,839 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1943822592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:22,839 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:22,839 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:22,839 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118148260] [2021-11-25 20:22:22,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:22,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:22,840 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:22,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:22,841 INFO L87 Difference]: Start difference. First operand 16362 states and 45908 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:23,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:23,399 INFO L93 Difference]: Finished difference Result 16540 states and 46221 transitions. [2021-11-25 20:22:23,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 20:22:23,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:23,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:23,431 INFO L225 Difference]: With dead ends: 16540 [2021-11-25 20:22:23,431 INFO L226 Difference]: Without dead ends: 16494 [2021-11-25 20:22:23,431 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 142 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:22:23,432 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 55 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:23,432 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 0 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:23,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16494 states. [2021-11-25 20:22:23,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16494 to 16338. [2021-11-25 20:22:23,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16338 states, 16337 states have (on average 2.8071249311379076) internal successors, (45860), 16337 states have internal predecessors, (45860), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:23,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16338 states to 16338 states and 45860 transitions. [2021-11-25 20:22:23,708 INFO L78 Accepts]: Start accepts. Automaton has 16338 states and 45860 transitions. Word has length 38 [2021-11-25 20:22:23,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:23,709 INFO L470 AbstractCegarLoop]: Abstraction has 16338 states and 45860 transitions. [2021-11-25 20:22:23,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:23,709 INFO L276 IsEmpty]: Start isEmpty. Operand 16338 states and 45860 transitions. [2021-11-25 20:22:23,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:23,733 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:23,733 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:23,733 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-11-25 20:22:23,733 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:23,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:23,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1034103043, now seen corresponding path program 39 times [2021-11-25 20:22:23,734 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:23,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95558843] [2021-11-25 20:22:23,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:23,735 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:23,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:23,916 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:23,916 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95558843] [2021-11-25 20:22:23,916 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95558843] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:23,917 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:23,917 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:23,917 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731318388] [2021-11-25 20:22:23,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:23,917 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:23,917 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:23,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:23,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:23,918 INFO L87 Difference]: Start difference. First operand 16338 states and 45860 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:24,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:24,340 INFO L93 Difference]: Finished difference Result 16420 states and 46005 transitions. [2021-11-25 20:22:24,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:22:24,341 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:24,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:24,374 INFO L225 Difference]: With dead ends: 16420 [2021-11-25 20:22:24,374 INFO L226 Difference]: Without dead ends: 16342 [2021-11-25 20:22:24,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:22:24,374 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 48 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 628 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:24,375 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [48 Valid, 0 Invalid, 628 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:22:24,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16342 states. [2021-11-25 20:22:24,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16342 to 16294. [2021-11-25 20:22:24,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16294 states, 16293 states have (on average 2.809795617749954) internal successors, (45780), 16293 states have internal predecessors, (45780), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:24,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16294 states to 16294 states and 45780 transitions. [2021-11-25 20:22:24,782 INFO L78 Accepts]: Start accepts. Automaton has 16294 states and 45780 transitions. Word has length 38 [2021-11-25 20:22:24,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:24,782 INFO L470 AbstractCegarLoop]: Abstraction has 16294 states and 45780 transitions. [2021-11-25 20:22:24,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:24,782 INFO L276 IsEmpty]: Start isEmpty. Operand 16294 states and 45780 transitions. [2021-11-25 20:22:24,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:24,808 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:24,808 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:24,808 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2021-11-25 20:22:24,809 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:24,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:24,809 INFO L85 PathProgramCache]: Analyzing trace with hash 1321762603, now seen corresponding path program 40 times [2021-11-25 20:22:24,809 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:24,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171545983] [2021-11-25 20:22:24,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:24,809 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:24,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:24,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:24,997 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:24,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171545983] [2021-11-25 20:22:24,997 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171545983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:24,997 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:24,997 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:24,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532968706] [2021-11-25 20:22:24,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:24,998 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:24,998 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:24,998 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:24,998 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:24,998 INFO L87 Difference]: Start difference. First operand 16294 states and 45780 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:25,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:25,616 INFO L93 Difference]: Finished difference Result 16402 states and 45968 transitions. [2021-11-25 20:22:25,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 20:22:25,620 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:25,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:25,657 INFO L225 Difference]: With dead ends: 16402 [2021-11-25 20:22:25,657 INFO L226 Difference]: Without dead ends: 16368 [2021-11-25 20:22:25,657 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:22:25,658 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 41 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:25,658 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 0 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:25,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16368 states. [2021-11-25 20:22:25,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16368 to 16306. [2021-11-25 20:22:25,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16306 states, 16305 states have (on average 2.8088316467341308) internal successors, (45798), 16305 states have internal predecessors, (45798), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:25,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16306 states to 16306 states and 45798 transitions. [2021-11-25 20:22:25,959 INFO L78 Accepts]: Start accepts. Automaton has 16306 states and 45798 transitions. Word has length 38 [2021-11-25 20:22:25,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:25,959 INFO L470 AbstractCegarLoop]: Abstraction has 16306 states and 45798 transitions. [2021-11-25 20:22:25,959 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:25,959 INFO L276 IsEmpty]: Start isEmpty. Operand 16306 states and 45798 transitions. [2021-11-25 20:22:25,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:25,985 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:25,985 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:25,986 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-11-25 20:22:25,986 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:25,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:25,986 INFO L85 PathProgramCache]: Analyzing trace with hash -2017581735, now seen corresponding path program 41 times [2021-11-25 20:22:25,986 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:25,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629260837] [2021-11-25 20:22:25,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:25,987 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:26,156 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:26,156 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:26,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629260837] [2021-11-25 20:22:26,157 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629260837] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:26,157 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:26,157 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:26,157 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910748783] [2021-11-25 20:22:26,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:26,158 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:26,158 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:26,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:26,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:26,159 INFO L87 Difference]: Start difference. First operand 16306 states and 45798 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:27,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:27,008 INFO L93 Difference]: Finished difference Result 28300 states and 75139 transitions. [2021-11-25 20:22:27,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 20:22:27,008 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:27,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:27,076 INFO L225 Difference]: With dead ends: 28300 [2021-11-25 20:22:27,076 INFO L226 Difference]: Without dead ends: 28292 [2021-11-25 20:22:27,076 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2021-11-25 20:22:27,077 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 701 mSDsCounter, 0 mSdLazyCounter, 1456 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 1456 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:27,077 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 1522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 1456 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:22:27,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28292 states. [2021-11-25 20:22:27,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28292 to 16324. [2021-11-25 20:22:27,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16324 states, 16323 states have (on average 2.8081235067083257) internal successors, (45837), 16323 states have internal predecessors, (45837), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:27,496 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16324 states to 16324 states and 45837 transitions. [2021-11-25 20:22:27,496 INFO L78 Accepts]: Start accepts. Automaton has 16324 states and 45837 transitions. Word has length 38 [2021-11-25 20:22:27,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:27,496 INFO L470 AbstractCegarLoop]: Abstraction has 16324 states and 45837 transitions. [2021-11-25 20:22:27,496 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:27,496 INFO L276 IsEmpty]: Start isEmpty. Operand 16324 states and 45837 transitions. [2021-11-25 20:22:27,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:27,523 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:27,523 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] [2021-11-25 20:22:27,523 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-11-25 20:22:27,524 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:27,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:27,524 INFO L85 PathProgramCache]: Analyzing trace with hash -152170403, now seen corresponding path program 42 times [2021-11-25 20:22:27,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:27,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311007324] [2021-11-25 20:22:27,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:27,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:27,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:27,678 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:27,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311007324] [2021-11-25 20:22:27,679 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311007324] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:27,679 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:27,679 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:27,679 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414394650] [2021-11-25 20:22:27,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:27,680 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:27,680 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:27,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:27,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:27,681 INFO L87 Difference]: Start difference. First operand 16324 states and 45837 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:28,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:28,323 INFO L93 Difference]: Finished difference Result 16468 states and 46081 transitions. [2021-11-25 20:22:28,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-11-25 20:22:28,324 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:28,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:28,360 INFO L225 Difference]: With dead ends: 16468 [2021-11-25 20:22:28,360 INFO L226 Difference]: Without dead ends: 16452 [2021-11-25 20:22:28,360 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=410, Unknown=0, NotChecked=0, Total=600 [2021-11-25 20:22:28,361 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 51 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 819 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 876 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:28,361 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 0 Invalid, 876 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 819 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:22:28,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16452 states. [2021-11-25 20:22:28,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16452 to 16318. [2021-11-25 20:22:28,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16318 states, 16317 states have (on average 2.8078690935833794) internal successors, (45816), 16317 states have internal predecessors, (45816), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:28,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16318 states to 16318 states and 45816 transitions. [2021-11-25 20:22:28,631 INFO L78 Accepts]: Start accepts. Automaton has 16318 states and 45816 transitions. Word has length 38 [2021-11-25 20:22:28,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:28,631 INFO L470 AbstractCegarLoop]: Abstraction has 16318 states and 45816 transitions. [2021-11-25 20:22:28,631 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:28,631 INFO L276 IsEmpty]: Start isEmpty. Operand 16318 states and 45816 transitions. [2021-11-25 20:22:28,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:28,663 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:28,663 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] [2021-11-25 20:22:28,663 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2021-11-25 20:22:28,663 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:28,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:28,664 INFO L85 PathProgramCache]: Analyzing trace with hash -1405368391, now seen corresponding path program 43 times [2021-11-25 20:22:28,664 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:28,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1503487301] [2021-11-25 20:22:28,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:28,664 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:28,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:28,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:28,865 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:28,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1503487301] [2021-11-25 20:22:28,865 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1503487301] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:28,865 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:28,865 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:28,865 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [905400229] [2021-11-25 20:22:28,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:28,866 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:28,866 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:28,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:28,866 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:28,867 INFO L87 Difference]: Start difference. First operand 16318 states and 45816 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:29,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:29,905 INFO L93 Difference]: Finished difference Result 24652 states and 65637 transitions. [2021-11-25 20:22:29,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 20:22:29,905 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:29,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:29,953 INFO L225 Difference]: With dead ends: 24652 [2021-11-25 20:22:29,953 INFO L226 Difference]: Without dead ends: 24586 [2021-11-25 20:22:29,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:22:29,954 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 138 mSDsluCounter, 545 mSDsCounter, 0 mSdLazyCounter, 1384 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:29,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [138 Valid, 0 Invalid, 1502 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1384 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-25 20:22:29,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24586 states. [2021-11-25 20:22:30,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24586 to 16312. [2021-11-25 20:22:30,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16312 states, 16311 states have (on average 2.8072466433695054) internal successors, (45789), 16311 states have internal predecessors, (45789), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:30,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16312 states to 16312 states and 45789 transitions. [2021-11-25 20:22:30,299 INFO L78 Accepts]: Start accepts. Automaton has 16312 states and 45789 transitions. Word has length 38 [2021-11-25 20:22:30,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:30,299 INFO L470 AbstractCegarLoop]: Abstraction has 16312 states and 45789 transitions. [2021-11-25 20:22:30,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:30,299 INFO L276 IsEmpty]: Start isEmpty. Operand 16312 states and 45789 transitions. [2021-11-25 20:22:30,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:30,325 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:30,325 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] [2021-11-25 20:22:30,325 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-11-25 20:22:30,326 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:30,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:30,326 INFO L85 PathProgramCache]: Analyzing trace with hash -907817795, now seen corresponding path program 44 times [2021-11-25 20:22:30,326 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:30,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913878211] [2021-11-25 20:22:30,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:30,326 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:30,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:30,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:30,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:30,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913878211] [2021-11-25 20:22:30,481 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913878211] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:30,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:30,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:30,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575723530] [2021-11-25 20:22:30,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:30,481 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:30,482 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:30,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:30,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:30,482 INFO L87 Difference]: Start difference. First operand 16312 states and 45789 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:30,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:30,953 INFO L93 Difference]: Finished difference Result 16370 states and 45886 transitions. [2021-11-25 20:22:30,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-11-25 20:22:30,954 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:30,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:30,987 INFO L225 Difference]: With dead ends: 16370 [2021-11-25 20:22:30,987 INFO L226 Difference]: Without dead ends: 16278 [2021-11-25 20:22:30,988 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=164, Invalid=342, Unknown=0, NotChecked=0, Total=506 [2021-11-25 20:22:30,988 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 279 mSDsCounter, 0 mSdLazyCounter, 612 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:30,988 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 612 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:22:31,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16278 states. [2021-11-25 20:22:31,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16278 to 16254. [2021-11-25 20:22:31,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16254 states, 16253 states have (on average 2.8108041592321418) internal successors, (45684), 16253 states have internal predecessors, (45684), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:31,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16254 states to 16254 states and 45684 transitions. [2021-11-25 20:22:31,267 INFO L78 Accepts]: Start accepts. Automaton has 16254 states and 45684 transitions. Word has length 38 [2021-11-25 20:22:31,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:31,267 INFO L470 AbstractCegarLoop]: Abstraction has 16254 states and 45684 transitions. [2021-11-25 20:22:31,267 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:31,267 INFO L276 IsEmpty]: Start isEmpty. Operand 16254 states and 45684 transitions. [2021-11-25 20:22:31,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:31,292 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:31,292 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:31,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-11-25 20:22:31,292 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:31,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:31,293 INFO L85 PathProgramCache]: Analyzing trace with hash 741914205, now seen corresponding path program 45 times [2021-11-25 20:22:31,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:31,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575977546] [2021-11-25 20:22:31,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:31,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:31,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:31,460 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:31,460 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:31,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575977546] [2021-11-25 20:22:31,461 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575977546] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:31,461 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:31,461 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:31,461 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951423250] [2021-11-25 20:22:31,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:31,461 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:31,461 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:31,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:31,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:31,462 INFO L87 Difference]: Start difference. First operand 16254 states and 45684 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:31,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:31,937 INFO L93 Difference]: Finished difference Result 16330 states and 45808 transitions. [2021-11-25 20:22:31,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:22:31,938 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:31,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:31,984 INFO L225 Difference]: With dead ends: 16330 [2021-11-25 20:22:31,984 INFO L226 Difference]: Without dead ends: 16296 [2021-11-25 20:22:31,985 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2021-11-25 20:22:31,985 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 691 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 691 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:31,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 691 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 20:22:32,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16296 states. [2021-11-25 20:22:32,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16296 to 16266. [2021-11-25 20:22:32,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16266 states, 16265 states have (on average 2.8098370734706424) internal successors, (45702), 16265 states have internal predecessors, (45702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:32,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16266 states to 16266 states and 45702 transitions. [2021-11-25 20:22:32,279 INFO L78 Accepts]: Start accepts. Automaton has 16266 states and 45702 transitions. Word has length 38 [2021-11-25 20:22:32,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:32,279 INFO L470 AbstractCegarLoop]: Abstraction has 16266 states and 45702 transitions. [2021-11-25 20:22:32,280 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:32,280 INFO L276 IsEmpty]: Start isEmpty. Operand 16266 states and 45702 transitions. [2021-11-25 20:22:32,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:32,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:32,305 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] [2021-11-25 20:22:32,305 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2021-11-25 20:22:32,305 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:32,305 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:32,305 INFO L85 PathProgramCache]: Analyzing trace with hash 456390923, now seen corresponding path program 46 times [2021-11-25 20:22:32,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:32,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786726428] [2021-11-25 20:22:32,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:32,306 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:32,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:32,529 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:32,529 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:32,529 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786726428] [2021-11-25 20:22:32,529 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786726428] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:32,530 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:32,530 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 20:22:32,530 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [226488659] [2021-11-25 20:22:32,530 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:32,530 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:22:32,530 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:32,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:22:32,531 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:22:32,531 INFO L87 Difference]: Start difference. First operand 16266 states and 45702 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:32,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:32,911 INFO L93 Difference]: Finished difference Result 16324 states and 45799 transitions. [2021-11-25 20:22:32,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:22:32,912 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:32,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:32,944 INFO L225 Difference]: With dead ends: 16324 [2021-11-25 20:22:32,944 INFO L226 Difference]: Without dead ends: 16302 [2021-11-25 20:22:32,944 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=109, Invalid=311, Unknown=0, NotChecked=0, Total=420 [2021-11-25 20:22:32,945 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 39 mSDsluCounter, 149 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 459 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:32,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 0 Invalid, 459 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 415 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:22:32,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16302 states. [2021-11-25 20:22:33,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16302 to 16278. [2021-11-25 20:22:33,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16278 states, 16277 states have (on average 2.8088714136511643) internal successors, (45720), 16277 states have internal predecessors, (45720), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:33,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16278 states to 16278 states and 45720 transitions. [2021-11-25 20:22:33,227 INFO L78 Accepts]: Start accepts. Automaton has 16278 states and 45720 transitions. Word has length 38 [2021-11-25 20:22:33,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:33,227 INFO L470 AbstractCegarLoop]: Abstraction has 16278 states and 45720 transitions. [2021-11-25 20:22:33,227 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:33,227 INFO L276 IsEmpty]: Start isEmpty. Operand 16278 states and 45720 transitions. [2021-11-25 20:22:33,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:33,260 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:33,261 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] [2021-11-25 20:22:33,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2021-11-25 20:22:33,261 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:33,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:33,261 INFO L85 PathProgramCache]: Analyzing trace with hash 492198499, now seen corresponding path program 47 times [2021-11-25 20:22:33,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:33,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2038819983] [2021-11-25 20:22:33,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:33,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:33,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:33,450 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:33,451 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:33,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2038819983] [2021-11-25 20:22:33,451 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2038819983] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:33,451 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:33,451 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:33,452 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1071897895] [2021-11-25 20:22:33,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:33,452 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:33,452 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:33,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:33,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:33,453 INFO L87 Difference]: Start difference. First operand 16278 states and 45720 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:33,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:33,835 INFO L93 Difference]: Finished difference Result 16324 states and 45793 transitions. [2021-11-25 20:22:33,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-25 20:22:33,835 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:33,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:33,889 INFO L225 Difference]: With dead ends: 16324 [2021-11-25 20:22:33,889 INFO L226 Difference]: Without dead ends: 16314 [2021-11-25 20:22:33,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:22:33,891 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 45 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:33,891 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [45 Valid, 0 Invalid, 436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:22:33,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16314 states. [2021-11-25 20:22:34,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16314 to 16284. [2021-11-25 20:22:34,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16284 states, 16283 states have (on average 2.808389117484493) internal successors, (45729), 16283 states have internal predecessors, (45729), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:34,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16284 states to 16284 states and 45729 transitions. [2021-11-25 20:22:34,240 INFO L78 Accepts]: Start accepts. Automaton has 16284 states and 45729 transitions. Word has length 38 [2021-11-25 20:22:34,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:34,240 INFO L470 AbstractCegarLoop]: Abstraction has 16284 states and 45729 transitions. [2021-11-25 20:22:34,240 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:34,240 INFO L276 IsEmpty]: Start isEmpty. Operand 16284 states and 45729 transitions. [2021-11-25 20:22:34,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:34,271 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:34,271 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] [2021-11-25 20:22:34,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2021-11-25 20:22:34,272 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:34,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:34,273 INFO L85 PathProgramCache]: Analyzing trace with hash 1219915819, now seen corresponding path program 48 times [2021-11-25 20:22:34,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:34,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1161268239] [2021-11-25 20:22:34,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:34,273 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:34,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:34,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:34,464 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:34,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1161268239] [2021-11-25 20:22:34,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1161268239] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:34,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:34,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:34,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85730354] [2021-11-25 20:22:34,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:34,465 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:34,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:34,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:34,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:34,466 INFO L87 Difference]: Start difference. First operand 16284 states and 45729 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:35,218 INFO L93 Difference]: Finished difference Result 28210 states and 74939 transitions. [2021-11-25 20:22:35,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-25 20:22:35,218 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:35,283 INFO L225 Difference]: With dead ends: 28210 [2021-11-25 20:22:35,283 INFO L226 Difference]: Without dead ends: 28172 [2021-11-25 20:22:35,284 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2021-11-25 20:22:35,287 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 566 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:35,288 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:22:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28172 states. [2021-11-25 20:22:35,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28172 to 16254. [2021-11-25 20:22:35,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16254 states, 16253 states have (on average 2.810065833999877) internal successors, (45672), 16253 states have internal predecessors, (45672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:35,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16254 states to 16254 states and 45672 transitions. [2021-11-25 20:22:35,716 INFO L78 Accepts]: Start accepts. Automaton has 16254 states and 45672 transitions. Word has length 38 [2021-11-25 20:22:35,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:35,716 INFO L470 AbstractCegarLoop]: Abstraction has 16254 states and 45672 transitions. [2021-11-25 20:22:35,717 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:35,717 INFO L276 IsEmpty]: Start isEmpty. Operand 16254 states and 45672 transitions. [2021-11-25 20:22:35,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:35,740 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:35,740 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] [2021-11-25 20:22:35,740 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2021-11-25 20:22:35,740 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:35,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:35,741 INFO L85 PathProgramCache]: Analyzing trace with hash 193415227, now seen corresponding path program 49 times [2021-11-25 20:22:35,741 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:35,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345084163] [2021-11-25 20:22:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:35,741 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:35,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:35,928 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:35,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345084163] [2021-11-25 20:22:35,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345084163] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:35,928 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:35,928 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:35,928 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387190101] [2021-11-25 20:22:35,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:35,929 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:35,929 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:35,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:35,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:35,929 INFO L87 Difference]: Start difference. First operand 16254 states and 45672 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:36,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:36,233 INFO L93 Difference]: Finished difference Result 16288 states and 45721 transitions. [2021-11-25 20:22:36,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-25 20:22:36,234 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:36,234 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:36,266 INFO L225 Difference]: With dead ends: 16288 [2021-11-25 20:22:36,266 INFO L226 Difference]: Without dead ends: 16178 [2021-11-25 20:22:36,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:22:36,267 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 29 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 574 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 574 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:36,267 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 0 Invalid, 601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 574 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-25 20:22:36,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16178 states. [2021-11-25 20:22:36,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16178 to 16178. [2021-11-25 20:22:36,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16178 states, 16177 states have (on average 2.8148606045620324) internal successors, (45536), 16177 states have internal predecessors, (45536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:36,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16178 states to 16178 states and 45536 transitions. [2021-11-25 20:22:36,535 INFO L78 Accepts]: Start accepts. Automaton has 16178 states and 45536 transitions. Word has length 38 [2021-11-25 20:22:36,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:36,535 INFO L470 AbstractCegarLoop]: Abstraction has 16178 states and 45536 transitions. [2021-11-25 20:22:36,535 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:36,535 INFO L276 IsEmpty]: Start isEmpty. Operand 16178 states and 45536 transitions. [2021-11-25 20:22:36,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:36,559 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:36,559 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 20:22:36,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2021-11-25 20:22:36,559 INFO L402 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:36,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:36,560 INFO L85 PathProgramCache]: Analyzing trace with hash -1147231371, now seen corresponding path program 50 times [2021-11-25 20:22:36,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:36,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048124214] [2021-11-25 20:22:36,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:36,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:36,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:36,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:36,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:36,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048124214] [2021-11-25 20:22:36,834 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048124214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:36,834 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:36,834 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-25 20:22:36,834 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1282018679] [2021-11-25 20:22:36,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:36,835 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-25 20:22:36,835 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:36,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-25 20:22:36,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2021-11-25 20:22:36,835 INFO L87 Difference]: Start difference. First operand 16178 states and 45536 transitions. Second operand has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:37,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:37,184 INFO L93 Difference]: Finished difference Result 16198 states and 45216 transitions. [2021-11-25 20:22:37,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-25 20:22:37,185 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:37,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:37,220 INFO L225 Difference]: With dead ends: 16198 [2021-11-25 20:22:37,220 INFO L226 Difference]: Without dead ends: 16198 [2021-11-25 20:22:37,221 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-25 20:22:37,221 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 24 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 454 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:37,221 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 0 Invalid, 454 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-25 20:22:37,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16198 states. [2021-11-25 20:22:37,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16198 to 16150. [2021-11-25 20:22:37,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16150 states, 16149 states have (on average 2.795467211592049) internal successors, (45144), 16149 states have internal predecessors, (45144), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:37,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16150 states to 16150 states and 45144 transitions. [2021-11-25 20:22:37,565 INFO L78 Accepts]: Start accepts. Automaton has 16150 states and 45144 transitions. Word has length 38 [2021-11-25 20:22:37,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:37,565 INFO L470 AbstractCegarLoop]: Abstraction has 16150 states and 45144 transitions. [2021-11-25 20:22:37,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.222222222222222) internal successors, (38), 8 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:37,565 INFO L276 IsEmpty]: Start isEmpty. Operand 16150 states and 45144 transitions. [2021-11-25 20:22:37,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:37,595 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:37,595 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] [2021-11-25 20:22:37,595 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2021-11-25 20:22:37,595 INFO L402 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:37,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:37,596 INFO L85 PathProgramCache]: Analyzing trace with hash -2018526663, now seen corresponding path program 51 times [2021-11-25 20:22:37,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:37,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743988496] [2021-11-25 20:22:37,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:37,596 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:37,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:37,832 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:37,833 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:37,833 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743988496] [2021-11-25 20:22:37,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743988496] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:37,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:37,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-11-25 20:22:37,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682958879] [2021-11-25 20:22:37,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:37,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-25 20:22:37,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:37,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-25 20:22:37,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2021-11-25 20:22:37,835 INFO L87 Difference]: Start difference. First operand 16150 states and 45144 transitions. Second operand has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:38,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:38,690 INFO L93 Difference]: Finished difference Result 27840 states and 74440 transitions. [2021-11-25 20:22:38,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-11-25 20:22:38,690 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:38,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:38,761 INFO L225 Difference]: With dead ends: 27840 [2021-11-25 20:22:38,762 INFO L226 Difference]: Without dead ends: 27794 [2021-11-25 20:22:38,762 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=147, Invalid=315, Unknown=0, NotChecked=0, Total=462 [2021-11-25 20:22:38,763 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 113 mSDsluCounter, 484 mSDsCounter, 0 mSdLazyCounter, 1152 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1249 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 1152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:38,763 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [113 Valid, 0 Invalid, 1249 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 1152 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-25 20:22:38,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27794 states. [2021-11-25 20:22:39,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27794 to 16210. [2021-11-25 20:22:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16210 states, 16209 states have (on average 2.790671848972793) internal successors, (45234), 16209 states have internal predecessors, (45234), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:39,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16210 states to 16210 states and 45234 transitions. [2021-11-25 20:22:39,213 INFO L78 Accepts]: Start accepts. Automaton has 16210 states and 45234 transitions. Word has length 38 [2021-11-25 20:22:39,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:39,214 INFO L470 AbstractCegarLoop]: Abstraction has 16210 states and 45234 transitions. [2021-11-25 20:22:39,214 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.7142857142857144) internal successors, (38), 13 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:39,214 INFO L276 IsEmpty]: Start isEmpty. Operand 16210 states and 45234 transitions. [2021-11-25 20:22:39,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:39,242 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:39,243 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] [2021-11-25 20:22:39,243 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2021-11-25 20:22:39,243 INFO L402 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:39,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:39,244 INFO L85 PathProgramCache]: Analyzing trace with hash -663443905, now seen corresponding path program 52 times [2021-11-25 20:22:39,244 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:39,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2136935526] [2021-11-25 20:22:39,244 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:39,244 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:39,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:39,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:39,414 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:39,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2136935526] [2021-11-25 20:22:39,415 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2136935526] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:39,415 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:39,415 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:39,415 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530024262] [2021-11-25 20:22:39,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:39,416 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:39,416 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:39,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:39,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:39,417 INFO L87 Difference]: Start difference. First operand 16210 states and 45234 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:40,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:40,198 INFO L93 Difference]: Finished difference Result 18536 states and 50829 transitions. [2021-11-25 20:22:40,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-25 20:22:40,199 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:40,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:40,244 INFO L225 Difference]: With dead ends: 18536 [2021-11-25 20:22:40,245 INFO L226 Difference]: Without dead ends: 18378 [2021-11-25 20:22:40,245 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=217, Invalid=485, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:22:40,246 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 87 mSDsluCounter, 327 mSDsCounter, 0 mSdLazyCounter, 863 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 963 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 863 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:40,246 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [87 Valid, 0 Invalid, 963 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 863 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-25 20:22:40,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18378 states. [2021-11-25 20:22:40,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18378 to 16150. [2021-11-25 20:22:40,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16150 states, 16149 states have (on average 2.790265651123909) internal successors, (45060), 16149 states have internal predecessors, (45060), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:40,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16150 states to 16150 states and 45060 transitions. [2021-11-25 20:22:40,628 INFO L78 Accepts]: Start accepts. Automaton has 16150 states and 45060 transitions. Word has length 38 [2021-11-25 20:22:40,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:40,628 INFO L470 AbstractCegarLoop]: Abstraction has 16150 states and 45060 transitions. [2021-11-25 20:22:40,628 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:40,628 INFO L276 IsEmpty]: Start isEmpty. Operand 16150 states and 45060 transitions. [2021-11-25 20:22:40,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:40,654 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:40,654 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] [2021-11-25 20:22:40,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2021-11-25 20:22:40,654 INFO L402 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:40,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2056525925, now seen corresponding path program 53 times [2021-11-25 20:22:40,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:40,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124079191] [2021-11-25 20:22:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:40,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:40,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:40,848 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:40,848 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:40,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124079191] [2021-11-25 20:22:40,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124079191] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:40,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:40,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:40,849 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1509314461] [2021-11-25 20:22:40,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:40,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:40,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:40,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:40,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:40,850 INFO L87 Difference]: Start difference. First operand 16150 states and 45060 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:41,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:41,797 INFO L93 Difference]: Finished difference Result 16904 states and 46973 transitions. [2021-11-25 20:22:41,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-11-25 20:22:41,798 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:41,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:41,839 INFO L225 Difference]: With dead ends: 16904 [2021-11-25 20:22:41,839 INFO L226 Difference]: Without dead ends: 16710 [2021-11-25 20:22:41,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=212, Invalid=490, Unknown=0, NotChecked=0, Total=702 [2021-11-25 20:22:41,839 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 85 mSDsluCounter, 433 mSDsCounter, 0 mSdLazyCounter, 1041 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:41,840 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [85 Valid, 0 Invalid, 1135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1041 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-25 20:22:41,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16710 states. [2021-11-25 20:22:42,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16710 to 16102. [2021-11-25 20:22:42,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16102 states, 16101 states have (on average 2.791130985653065) internal successors, (44940), 16101 states have internal predecessors, (44940), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:42,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16102 states to 16102 states and 44940 transitions. [2021-11-25 20:22:42,158 INFO L78 Accepts]: Start accepts. Automaton has 16102 states and 44940 transitions. Word has length 38 [2021-11-25 20:22:42,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:42,158 INFO L470 AbstractCegarLoop]: Abstraction has 16102 states and 44940 transitions. [2021-11-25 20:22:42,158 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:42,158 INFO L276 IsEmpty]: Start isEmpty. Operand 16102 states and 44940 transitions. [2021-11-25 20:22:42,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:42,185 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:42,185 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] [2021-11-25 20:22:42,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2021-11-25 20:22:42,185 INFO L402 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:42,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:42,186 INFO L85 PathProgramCache]: Analyzing trace with hash -1115899329, now seen corresponding path program 54 times [2021-11-25 20:22:42,186 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:42,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644767522] [2021-11-25 20:22:42,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:42,187 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:42,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:42,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:42,313 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:42,313 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644767522] [2021-11-25 20:22:42,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644767522] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:42,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:42,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-25 20:22:42,314 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728790974] [2021-11-25 20:22:42,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:42,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 20:22:42,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:42,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 20:22:42,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 20:22:42,315 INFO L87 Difference]: Start difference. First operand 16102 states and 44940 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:42,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 20:22:42,533 INFO L93 Difference]: Finished difference Result 16090 states and 44910 transitions. [2021-11-25 20:22:42,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 20:22:42,534 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-11-25 20:22:42,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 20:22:42,575 INFO L225 Difference]: With dead ends: 16090 [2021-11-25 20:22:42,575 INFO L226 Difference]: Without dead ends: 16090 [2021-11-25 20:22:42,575 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 20:22:42,576 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 10 mSDsluCounter, 81 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 201 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 20:22:42,576 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 0 Invalid, 201 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 20:22:42,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16090 states. [2021-11-25 20:22:42,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16090 to 16090. [2021-11-25 20:22:42,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16090 states, 16089 states have (on average 2.7913481260488533) internal successors, (44910), 16089 states have internal predecessors, (44910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:42,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16090 states to 16090 states and 44910 transitions. [2021-11-25 20:22:42,964 INFO L78 Accepts]: Start accepts. Automaton has 16090 states and 44910 transitions. Word has length 38 [2021-11-25 20:22:42,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 20:22:42,964 INFO L470 AbstractCegarLoop]: Abstraction has 16090 states and 44910 transitions. [2021-11-25 20:22:42,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-25 20:22:42,964 INFO L276 IsEmpty]: Start isEmpty. Operand 16090 states and 44910 transitions. [2021-11-25 20:22:43,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-11-25 20:22:43,009 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 20:22:43,009 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] [2021-11-25 20:22:43,010 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2021-11-25 20:22:43,010 INFO L402 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr2INUSE_VIOLATION (and 3 more)] === [2021-11-25 20:22:43,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 20:22:43,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1421100293, now seen corresponding path program 55 times [2021-11-25 20:22:43,011 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 20:22:43,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828964459] [2021-11-25 20:22:43,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 20:22:43,011 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 20:22:43,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 20:22:43,235 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-25 20:22:43,236 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 20:22:43,236 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828964459] [2021-11-25 20:22:43,236 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828964459] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 20:22:43,236 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 20:22:43,237 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-11-25 20:22:43,237 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696358802] [2021-11-25 20:22:43,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 20:22:43,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-11-25 20:22:43,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 20:22:43,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-11-25 20:22:43,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2021-11-25 20:22:43,239 INFO L87 Difference]: Start difference. First operand 16090 states and 44910 transitions. Second operand has 13 states, 13 states have (on average 2.923076923076923) internal successors, (38), 12 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)