./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba --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 fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-22 02:16:55,531 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:16:55,533 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:16:55,558 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:16:55,562 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:16:55,564 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:16:55,567 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:16:55,573 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:16:55,579 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:16:55,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:16:55,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:16:55,585 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:16:55,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:16:55,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:16:55,593 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:16:55,596 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:16:55,599 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:16:55,606 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:16:55,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:16:55,610 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:16:55,612 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:16:55,617 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:16:55,618 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:16:55,619 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:16:55,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:16:55,625 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:16:55,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:16:55,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:16:55,627 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:16:55,628 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:16:55,628 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:16:55,629 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:16:55,631 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:16:55,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:16:55,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:16:55,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:16:55,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:16:55,636 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:16:55,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:16:55,638 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:16:55,640 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:16:55,641 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:16:55,686 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:16:55,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:16:55,687 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:16:55,687 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:16:55,688 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:16:55,688 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:16:55,689 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:16:55,689 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:16:55,689 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:16:55,689 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:16:55,690 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:16:55,691 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:16:55,691 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:16:55,691 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:16:55,691 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:16:55,692 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:16:55,692 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:16:55,692 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:16:55,693 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:16:55,693 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:16:55,693 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:16:55,694 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:16:55,694 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:16:55,694 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:16:55,694 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:16:55,695 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:16:55,695 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:16:55,696 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:16:55,696 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:16:55,696 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:16:55,697 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:16:55,697 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:16:55,697 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:16:55,698 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:16:55,698 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:16:55,698 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:16:55,698 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:16:55,698 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:16:55,699 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:16:55,699 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:16:55,699 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:16:55,699 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fddded73cca9ade55587111b2e2c843e75dd81397929514bda88fadfc663c7db [2022-11-22 02:16:56,061 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:16:56,105 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:16:56,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:16:56,109 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:16:56,110 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:16:56,112 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-22 02:16:59,192 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:16:59,549 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:16:59,549 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/sv-benchmarks/c/ldv-races/race-2_1-container_of.i [2022-11-22 02:16:59,588 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/data/5b0e28464/a09c9245c7ae45aaba8aabb4eacbfd17/FLAGa0beabcd8 [2022-11-22 02:16:59,604 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/data/5b0e28464/a09c9245c7ae45aaba8aabb4eacbfd17 [2022-11-22 02:16:59,609 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:16:59,613 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:16:59,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:16:59,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:16:59,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:16:59,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:16:59" (1/1) ... [2022-11-22 02:16:59,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@573369fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:16:59, skipping insertion in model container [2022-11-22 02:16:59,623 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:16:59" (1/1) ... [2022-11-22 02:16:59,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:16:59,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:17:00,600 WARN L237 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_0c269754-7f14-4963-aaa2-6a40f36f5ab2/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-22 02:17:00,651 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:17:00,666 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:17:00,754 WARN L237 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_0c269754-7f14-4963-aaa2-6a40f36f5ab2/sv-benchmarks/c/ldv-races/race-2_1-container_of.i[76077,76090] [2022-11-22 02:17:00,778 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:17:00,926 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:17:00,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00 WrapperNode [2022-11-22 02:17:00,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:17:00,928 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:17:00,928 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:17:00,928 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:17:00,936 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:00,960 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:00,986 INFO L138 Inliner]: procedures = 482, calls = 46, calls flagged for inlining = 12, calls inlined = 12, statements flattened = 133 [2022-11-22 02:17:00,987 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:17:00,988 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:17:00,988 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:17:00,988 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:17:00,998 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:00,998 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,003 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,004 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,015 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,021 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,025 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,027 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,032 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:17:01,033 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:17:01,033 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:17:01,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:17:01,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (1/1) ... [2022-11-22 02:17:01,041 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:17:01,056 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:17:01,067 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:17:01,069 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:17:01,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:17:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure my_callback [2022-11-22 02:17:01,100 INFO L138 BoogieDeclarations]: Found implementation of procedure my_callback [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-22 02:17:01,100 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-22 02:17:01,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:17:01,102 WARN L209 CfgBuilder]: User set CodeBlockSize to LoopFreeBlock but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-22 02:17:01,409 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:17:01,411 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:17:01,815 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:17:01,824 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:17:01,824 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-22 02:17:01,826 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:17:01 BoogieIcfgContainer [2022-11-22 02:17:01,826 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:17:01,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:17:01,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:17:01,832 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:17:01,832 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:16:59" (1/3) ... [2022-11-22 02:17:01,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60860c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:17:01, skipping insertion in model container [2022-11-22 02:17:01,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:17:00" (2/3) ... [2022-11-22 02:17:01,833 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@60860c73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:17:01, skipping insertion in model container [2022-11-22 02:17:01,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:17:01" (3/3) ... [2022-11-22 02:17:01,839 INFO L112 eAbstractionObserver]: Analyzing ICFG race-2_1-container_of.i [2022-11-22 02:17:01,847 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-22 02:17:01,858 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:17:01,858 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2022-11-22 02:17:01,858 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-22 02:17:01,994 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-22 02:17:02,042 INFO L115 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2022-11-22 02:17:02,061 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 193 places, 195 transitions, 406 flow [2022-11-22 02:17:02,066 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 193 places, 195 transitions, 406 flow [2022-11-22 02:17:02,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 193 places, 195 transitions, 406 flow [2022-11-22 02:17:02,213 INFO L130 PetriNetUnfolder]: 10/240 cut-off events. [2022-11-22 02:17:02,213 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-22 02:17:02,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 249 conditions, 240 events. 10/240 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 405 event pairs, 0 based on Foata normal form. 0/220 useless extension candidates. Maximal degree in co-relation 141. Up to 4 conditions per place. [2022-11-22 02:17:02,226 INFO L119 LiptonReduction]: Number of co-enabled transitions 3500 [2022-11-22 02:17:52,359 INFO L134 LiptonReduction]: Checked pairs total: 7400 [2022-11-22 02:17:52,360 INFO L136 LiptonReduction]: Total number of compositions: 220 [2022-11-22 02:17:52,367 INFO L113 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 40 places, 37 transitions, 90 flow [2022-11-22 02:17:52,413 INFO L135 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 405 states, 395 states have (on average 2.6126582278481014) internal successors, (1032), 404 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:52,435 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:17:52,441 INFO L357 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, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@19ad6e8f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:17:52,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2022-11-22 02:17:52,445 INFO L276 IsEmpty]: Start isEmpty. Operand has 405 states, 395 states have (on average 2.6126582278481014) internal successors, (1032), 404 states have internal predecessors, (1032), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:52,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 2 [2022-11-22 02:17:52,450 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:52,450 INFO L195 NwaCegarLoop]: trace histogram [1] [2022-11-22 02:17:52,451 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:17:52,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash 688, now seen corresponding path program 1 times [2022-11-22 02:17:52,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:52,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563380310] [2022-11-22 02:17:52,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:52,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:52,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:52,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:17:52,733 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:52,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563380310] [2022-11-22 02:17:52,734 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563380310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:52,734 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:52,734 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2022-11-22 02:17:52,736 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [621912560] [2022-11-22 02:17:52,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:52,743 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:17:52,743 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:52,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:17:52,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:17:52,774 INFO L87 Difference]: Start difference. First operand has 405 states, 395 states have (on average 2.6126582278481014) internal successors, (1032), 404 states have internal predecessors, (1032), 0 states have call successors, (0), 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 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:52,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:52,908 INFO L93 Difference]: Finished difference Result 403 states and 993 transitions. [2022-11-22 02:17:52,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:17:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1 [2022-11-22 02:17:52,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:52,931 INFO L225 Difference]: With dead ends: 403 [2022-11-22 02:17:52,932 INFO L226 Difference]: Without dead ends: 366 [2022-11-22 02:17:52,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 0 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:17:52,936 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:52,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 4 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:17:52,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2022-11-22 02:17:52,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 366. [2022-11-22 02:17:52,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 360 states have (on average 2.488888888888889) internal successors, (896), 365 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:52,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 896 transitions. [2022-11-22 02:17:52,997 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 896 transitions. Word has length 1 [2022-11-22 02:17:52,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:52,997 INFO L495 AbstractCegarLoop]: Abstraction has 366 states and 896 transitions. [2022-11-22 02:17:52,998 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:52,998 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 896 transitions. [2022-11-22 02:17:52,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2022-11-22 02:17:52,999 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:52,999 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2022-11-22 02:17:52,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:17:53,000 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:17:53,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:53,000 INFO L85 PathProgramCache]: Analyzing trace with hash 21297979, now seen corresponding path program 1 times [2022-11-22 02:17:53,001 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:53,001 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181751212] [2022-11-22 02:17:53,001 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:53,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:53,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:17:53,556 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:53,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181751212] [2022-11-22 02:17:53,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181751212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:53,557 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:53,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:17:53,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158033728] [2022-11-22 02:17:53,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:53,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:17:53,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:53,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:17:53,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:17:53,560 INFO L87 Difference]: Start difference. First operand 366 states and 896 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:53,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:53,714 INFO L93 Difference]: Finished difference Result 521 states and 1271 transitions. [2022-11-22 02:17:53,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:17:53,715 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2022-11-22 02:17:53,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:53,720 INFO L225 Difference]: With dead ends: 521 [2022-11-22 02:17:53,720 INFO L226 Difference]: Without dead ends: 521 [2022-11-22 02:17:53,720 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:17:53,722 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 9 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:53,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 3 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:17:53,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521 states. [2022-11-22 02:17:53,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 521 to 425. [2022-11-22 02:17:53,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 425 states, 420 states have (on average 2.5023809523809524) internal successors, (1051), 424 states have internal predecessors, (1051), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:53,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 1051 transitions. [2022-11-22 02:17:53,750 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 1051 transitions. Word has length 4 [2022-11-22 02:17:53,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:53,751 INFO L495 AbstractCegarLoop]: Abstraction has 425 states and 1051 transitions. [2022-11-22 02:17:53,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:53,751 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 1051 transitions. [2022-11-22 02:17:53,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-11-22 02:17:53,752 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:53,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-11-22 02:17:53,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:17:53,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:17:53,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:53,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1007490371, now seen corresponding path program 1 times [2022-11-22 02:17:53,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:53,754 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618502952] [2022-11-22 02:17:53,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:53,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:53,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:54,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:17:54,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:54,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618502952] [2022-11-22 02:17:54,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618502952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:54,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:54,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:17:54,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024232854] [2022-11-22 02:17:54,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:54,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-22 02:17:54,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:54,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-22 02:17:54,103 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-22 02:17:54,103 INFO L87 Difference]: Start difference. First operand 425 states and 1051 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:54,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:54,376 INFO L93 Difference]: Finished difference Result 580 states and 1394 transitions. [2022-11-22 02:17:54,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:17:54,377 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2022-11-22 02:17:54,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:54,380 INFO L225 Difference]: With dead ends: 580 [2022-11-22 02:17:54,380 INFO L226 Difference]: Without dead ends: 495 [2022-11-22 02:17:54,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:17:54,383 INFO L413 NwaCegarLoop]: 5 mSDtfsCounter, 25 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:54,383 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 9 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:17:54,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 495 states. [2022-11-22 02:17:54,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 495 to 463. [2022-11-22 02:17:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 463 states, 459 states have (on average 2.52723311546841) internal successors, (1160), 462 states have internal predecessors, (1160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:54,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 463 states to 463 states and 1160 transitions. [2022-11-22 02:17:54,416 INFO L78 Accepts]: Start accepts. Automaton has 463 states and 1160 transitions. Word has length 6 [2022-11-22 02:17:54,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:54,416 INFO L495 AbstractCegarLoop]: Abstraction has 463 states and 1160 transitions. [2022-11-22 02:17:54,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 4 states have internal predecessors, (6), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:54,416 INFO L276 IsEmpty]: Start isEmpty. Operand 463 states and 1160 transitions. [2022-11-22 02:17:54,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-11-22 02:17:54,418 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:54,418 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:17:54,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:17:54,418 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:17:54,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:54,421 INFO L85 PathProgramCache]: Analyzing trace with hash 729752332, now seen corresponding path program 1 times [2022-11-22 02:17:54,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:54,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778982061] [2022-11-22 02:17:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:54,426 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:54,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:54,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:17:54,549 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:54,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778982061] [2022-11-22 02:17:54,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778982061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:54,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:54,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-22 02:17:54,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093767978] [2022-11-22 02:17:54,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:54,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-22 02:17:54,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:54,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-22 02:17:54,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:17:54,555 INFO L87 Difference]: Start difference. First operand 463 states and 1160 transitions. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:54,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:54,647 INFO L93 Difference]: Finished difference Result 143 states and 312 transitions. [2022-11-22 02:17:54,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-22 02:17:54,647 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-11-22 02:17:54,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:54,648 INFO L225 Difference]: With dead ends: 143 [2022-11-22 02:17:54,648 INFO L226 Difference]: Without dead ends: 143 [2022-11-22 02:17:54,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-22 02:17:54,650 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 17 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:54,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 9 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:17:54,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 143 states. [2022-11-22 02:17:54,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 143 to 143. [2022-11-22 02:17:54,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 141 states have (on average 2.2127659574468086) internal successors, (312), 142 states have internal predecessors, (312), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:54,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 312 transitions. [2022-11-22 02:17:54,655 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 312 transitions. Word has length 10 [2022-11-22 02:17:54,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:54,656 INFO L495 AbstractCegarLoop]: Abstraction has 143 states and 312 transitions. [2022-11-22 02:17:54,656 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:54,656 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 312 transitions. [2022-11-22 02:17:54,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:17:54,657 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:54,658 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:17:54,658 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:17:54,658 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:17:54,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:54,660 INFO L85 PathProgramCache]: Analyzing trace with hash 126635266, now seen corresponding path program 1 times [2022-11-22 02:17:54,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:54,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604846469] [2022-11-22 02:17:54,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:54,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:57,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:17:57,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:57,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604846469] [2022-11-22 02:17:57,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604846469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:57,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:57,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:17:57,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769710580] [2022-11-22 02:17:57,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:57,801 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:17:57,801 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:57,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:17:57,802 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:17:57,802 INFO L87 Difference]: Start difference. First operand 143 states and 312 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:59,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:17:59,105 INFO L93 Difference]: Finished difference Result 219 states and 453 transitions. [2022-11-22 02:17:59,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:17:59,105 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:17:59,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:17:59,107 INFO L225 Difference]: With dead ends: 219 [2022-11-22 02:17:59,107 INFO L226 Difference]: Without dead ends: 219 [2022-11-22 02:17:59,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:17:59,108 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 47 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 592 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 604 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 592 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:17:59,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 7 Invalid, 604 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 592 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:17:59,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2022-11-22 02:17:59,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 178. [2022-11-22 02:17:59,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 176 states have (on average 2.1193181818181817) internal successors, (373), 177 states have internal predecessors, (373), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:59,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 373 transitions. [2022-11-22 02:17:59,118 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 373 transitions. Word has length 21 [2022-11-22 02:17:59,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:17:59,118 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 373 transitions. [2022-11-22 02:17:59,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:17:59,119 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 373 transitions. [2022-11-22 02:17:59,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:17:59,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:17:59,127 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:17:59,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:17:59,127 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:17:59,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:17:59,128 INFO L85 PathProgramCache]: Analyzing trace with hash 126635246, now seen corresponding path program 1 times [2022-11-22 02:17:59,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:17:59,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607174127] [2022-11-22 02:17:59,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:17:59,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:17:59,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:17:59,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:17:59,930 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:17:59,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607174127] [2022-11-22 02:17:59,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607174127] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:17:59,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:17:59,931 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:17:59,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454613264] [2022-11-22 02:17:59,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:17:59,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:17:59,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:17:59,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:17:59,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:17:59,933 INFO L87 Difference]: Start difference. First operand 178 states and 373 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:00,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:00,377 INFO L93 Difference]: Finished difference Result 245 states and 484 transitions. [2022-11-22 02:18:00,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:18:00,378 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:00,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:00,380 INFO L225 Difference]: With dead ends: 245 [2022-11-22 02:18:00,380 INFO L226 Difference]: Without dead ends: 214 [2022-11-22 02:18:00,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:18:00,381 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 71 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 160 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:00,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 22 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 160 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:18:00,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-22 02:18:00,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 177. [2022-11-22 02:18:00,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 175 states have (on average 2.12) internal successors, (371), 176 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:00,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 371 transitions. [2022-11-22 02:18:00,389 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 371 transitions. Word has length 21 [2022-11-22 02:18:00,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:00,390 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 371 transitions. [2022-11-22 02:18:00,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:00,390 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 371 transitions. [2022-11-22 02:18:00,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:00,391 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:00,392 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:00,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:18:00,392 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:00,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:00,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1781401408, now seen corresponding path program 2 times [2022-11-22 02:18:00,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:00,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550832569] [2022-11-22 02:18:00,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:00,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:00,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:01,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:01,024 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:01,024 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550832569] [2022-11-22 02:18:01,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550832569] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:01,025 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:01,025 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:18:01,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161656051] [2022-11-22 02:18:01,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:01,025 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:18:01,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:01,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:18:01,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:18:01,026 INFO L87 Difference]: Start difference. First operand 177 states and 371 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:01,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:01,228 INFO L93 Difference]: Finished difference Result 201 states and 408 transitions. [2022-11-22 02:18:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:18:01,228 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:01,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:01,229 INFO L225 Difference]: With dead ends: 201 [2022-11-22 02:18:01,230 INFO L226 Difference]: Without dead ends: 200 [2022-11-22 02:18:01,230 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:18:01,230 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 36 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:01,231 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 5 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:18:01,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-11-22 02:18:01,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 188. [2022-11-22 02:18:01,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 186 states have (on average 2.0806451612903225) internal successors, (387), 187 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:01,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 387 transitions. [2022-11-22 02:18:01,240 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 387 transitions. Word has length 21 [2022-11-22 02:18:01,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:01,240 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 387 transitions. [2022-11-22 02:18:01,240 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:01,240 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 387 transitions. [2022-11-22 02:18:01,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:01,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:01,241 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:01,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:18:01,242 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:01,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:01,245 INFO L85 PathProgramCache]: Analyzing trace with hash -1067060856, now seen corresponding path program 3 times [2022-11-22 02:18:01,246 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:01,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845395801] [2022-11-22 02:18:01,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:01,246 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:03,311 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:03,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845395801] [2022-11-22 02:18:03,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845395801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:03,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:03,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:03,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035444855] [2022-11-22 02:18:03,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:03,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:03,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:03,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:03,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:03,313 INFO L87 Difference]: Start difference. First operand 188 states and 387 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:04,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:04,287 INFO L93 Difference]: Finished difference Result 236 states and 468 transitions. [2022-11-22 02:18:04,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:18:04,288 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:04,288 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:04,289 INFO L225 Difference]: With dead ends: 236 [2022-11-22 02:18:04,289 INFO L226 Difference]: Without dead ends: 210 [2022-11-22 02:18:04,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:04,290 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 30 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:04,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3 Invalid, 489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:18:04,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2022-11-22 02:18:04,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 192. [2022-11-22 02:18:04,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 2.068421052631579) internal successors, (393), 191 states have internal predecessors, (393), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:04,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 393 transitions. [2022-11-22 02:18:04,298 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 393 transitions. Word has length 21 [2022-11-22 02:18:04,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:04,298 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 393 transitions. [2022-11-22 02:18:04,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:04,298 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 393 transitions. [2022-11-22 02:18:04,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:04,299 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:04,299 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:04,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:18:04,300 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:04,300 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:04,300 INFO L85 PathProgramCache]: Analyzing trace with hash -1556895060, now seen corresponding path program 4 times [2022-11-22 02:18:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:04,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [206124744] [2022-11-22 02:18:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:04,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:06,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:06,601 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:06,601 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [206124744] [2022-11-22 02:18:06,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [206124744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:06,601 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:06,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:18:06,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987041583] [2022-11-22 02:18:06,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:06,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:06,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:06,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:06,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:06,603 INFO L87 Difference]: Start difference. First operand 192 states and 393 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:08,346 INFO L93 Difference]: Finished difference Result 245 states and 491 transitions. [2022-11-22 02:18:08,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:08,346 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:08,348 INFO L225 Difference]: With dead ends: 245 [2022-11-22 02:18:08,348 INFO L226 Difference]: Without dead ends: 245 [2022-11-22 02:18:08,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:18:08,349 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 47 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:08,350 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 1 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-22 02:18:08,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2022-11-22 02:18:08,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 223. [2022-11-22 02:18:08,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 221 states have (on average 2.018099547511312) internal successors, (446), 222 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:08,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 446 transitions. [2022-11-22 02:18:08,357 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 446 transitions. Word has length 21 [2022-11-22 02:18:08,358 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:08,358 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 446 transitions. [2022-11-22 02:18:08,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:08,358 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 446 transitions. [2022-11-22 02:18:08,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:08,359 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:08,359 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:08,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:18:08,360 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:08,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1556895080, now seen corresponding path program 2 times [2022-11-22 02:18:08,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:08,361 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501478410] [2022-11-22 02:18:08,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:08,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:09,084 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:09,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:09,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501478410] [2022-11-22 02:18:09,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501478410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:09,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:09,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:18:09,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461813586] [2022-11-22 02:18:09,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:09,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:18:09,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:09,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:18:09,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:18:09,086 INFO L87 Difference]: Start difference. First operand 223 states and 446 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:09,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:09,435 INFO L93 Difference]: Finished difference Result 316 states and 594 transitions. [2022-11-22 02:18:09,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:18:09,436 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:09,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:09,437 INFO L225 Difference]: With dead ends: 316 [2022-11-22 02:18:09,437 INFO L226 Difference]: Without dead ends: 295 [2022-11-22 02:18:09,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:18:09,438 INFO L413 NwaCegarLoop]: 8 mSDtfsCounter, 75 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 152 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 152 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:09,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 20 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 152 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-22 02:18:09,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-11-22 02:18:09,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 210. [2022-11-22 02:18:09,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 210 states, 208 states have (on average 2.0240384615384617) internal successors, (421), 209 states have internal predecessors, (421), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:09,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 421 transitions. [2022-11-22 02:18:09,448 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 421 transitions. Word has length 21 [2022-11-22 02:18:09,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:09,448 INFO L495 AbstractCegarLoop]: Abstraction has 210 states and 421 transitions. [2022-11-22 02:18:09,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:09,448 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 421 transitions. [2022-11-22 02:18:09,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:09,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:09,449 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:09,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:18:09,450 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:09,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:09,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1874259412, now seen corresponding path program 5 times [2022-11-22 02:18:09,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:09,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763566357] [2022-11-22 02:18:09,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:09,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:09,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:11,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:11,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:11,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763566357] [2022-11-22 02:18:11,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763566357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:11,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:11,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:11,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089912116] [2022-11-22 02:18:11,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:11,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:11,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:11,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:11,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:11,373 INFO L87 Difference]: Start difference. First operand 210 states and 421 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:12,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:12,291 INFO L93 Difference]: Finished difference Result 258 states and 493 transitions. [2022-11-22 02:18:12,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:12,291 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:12,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:12,292 INFO L225 Difference]: With dead ends: 258 [2022-11-22 02:18:12,293 INFO L226 Difference]: Without dead ends: 258 [2022-11-22 02:18:12,293 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=318, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:12,294 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 453 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 453 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:12,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 453 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:18:12,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-22 02:18:12,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 220. [2022-11-22 02:18:12,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 220 states, 218 states have (on average 2.0091743119266057) internal successors, (438), 219 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:12,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 220 states to 220 states and 438 transitions. [2022-11-22 02:18:12,301 INFO L78 Accepts]: Start accepts. Automaton has 220 states and 438 transitions. Word has length 21 [2022-11-22 02:18:12,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:12,302 INFO L495 AbstractCegarLoop]: Abstraction has 220 states and 438 transitions. [2022-11-22 02:18:12,302 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:12,302 INFO L276 IsEmpty]: Start isEmpty. Operand 220 states and 438 transitions. [2022-11-22 02:18:12,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:12,303 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:12,303 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:12,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-22 02:18:12,304 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:12,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:12,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1874259432, now seen corresponding path program 3 times [2022-11-22 02:18:12,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:12,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2098957370] [2022-11-22 02:18:12,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:12,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:12,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:12,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:12,957 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:12,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2098957370] [2022-11-22 02:18:12,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2098957370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:12,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:12,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:18:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841532983] [2022-11-22 02:18:12,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:12,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:18:12,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:12,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:18:12,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:18:12,959 INFO L87 Difference]: Start difference. First operand 220 states and 438 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:13,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:13,364 INFO L93 Difference]: Finished difference Result 283 states and 546 transitions. [2022-11-22 02:18:13,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:18:13,365 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:13,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:13,366 INFO L225 Difference]: With dead ends: 283 [2022-11-22 02:18:13,366 INFO L226 Difference]: Without dead ends: 262 [2022-11-22 02:18:13,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=87, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:18:13,367 INFO L413 NwaCegarLoop]: 6 mSDtfsCounter, 71 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 12 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:13,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 12 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:18:13,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2022-11-22 02:18:13,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 215. [2022-11-22 02:18:13,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 213 states have (on average 2.056338028169014) internal successors, (438), 214 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:13,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 438 transitions. [2022-11-22 02:18:13,374 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 438 transitions. Word has length 21 [2022-11-22 02:18:13,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:13,374 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 438 transitions. [2022-11-22 02:18:13,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:13,375 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 438 transitions. [2022-11-22 02:18:13,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:13,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:13,376 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:13,376 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-22 02:18:13,376 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:13,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:13,377 INFO L85 PathProgramCache]: Analyzing trace with hash 1868876396, now seen corresponding path program 6 times [2022-11-22 02:18:13,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:13,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [304474655] [2022-11-22 02:18:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:13,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:15,097 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:15,098 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:15,098 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [304474655] [2022-11-22 02:18:15,098 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [304474655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:15,098 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:15,098 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:15,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567939935] [2022-11-22 02:18:15,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:15,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:15,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:15,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:15,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:15,100 INFO L87 Difference]: Start difference. First operand 215 states and 438 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:15,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:15,891 INFO L93 Difference]: Finished difference Result 228 states and 456 transitions. [2022-11-22 02:18:15,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:18:15,892 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:15,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:15,893 INFO L225 Difference]: With dead ends: 228 [2022-11-22 02:18:15,893 INFO L226 Difference]: Without dead ends: 203 [2022-11-22 02:18:15,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:15,894 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 33 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:15,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 3 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 385 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:18:15,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-22 02:18:15,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 203. [2022-11-22 02:18:15,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 203 states, 201 states have (on average 2.08955223880597) internal successors, (420), 202 states have internal predecessors, (420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:15,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 420 transitions. [2022-11-22 02:18:15,901 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 420 transitions. Word has length 21 [2022-11-22 02:18:15,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:15,901 INFO L495 AbstractCegarLoop]: Abstraction has 203 states and 420 transitions. [2022-11-22 02:18:15,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:15,902 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 420 transitions. [2022-11-22 02:18:15,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:15,903 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:15,903 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:15,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-22 02:18:15,903 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:15,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:15,904 INFO L85 PathProgramCache]: Analyzing trace with hash -1789013120, now seen corresponding path program 7 times [2022-11-22 02:18:15,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:15,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1960743519] [2022-11-22 02:18:15,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:15,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:15,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:18,208 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:18,208 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:18,208 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1960743519] [2022-11-22 02:18:18,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1960743519] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:18,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:18,208 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:18:18,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195759695] [2022-11-22 02:18:18,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:18,209 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:18,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:18,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:18,210 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:18,210 INFO L87 Difference]: Start difference. First operand 203 states and 420 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:19,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:19,776 INFO L93 Difference]: Finished difference Result 292 states and 589 transitions. [2022-11-22 02:18:19,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:19,777 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:19,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:19,778 INFO L225 Difference]: With dead ends: 292 [2022-11-22 02:18:19,778 INFO L226 Difference]: Without dead ends: 266 [2022-11-22 02:18:19,779 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=92, Invalid=460, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:18:19,780 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 795 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:19,780 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1 Invalid, 832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 795 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:18:19,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-11-22 02:18:19,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 209. [2022-11-22 02:18:19,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 2.072463768115942) internal successors, (429), 208 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:19,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 429 transitions. [2022-11-22 02:18:19,787 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 429 transitions. Word has length 21 [2022-11-22 02:18:19,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:19,787 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 429 transitions. [2022-11-22 02:18:19,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:19,788 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 429 transitions. [2022-11-22 02:18:19,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:19,789 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:19,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:19,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-22 02:18:19,789 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:19,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:19,790 INFO L85 PathProgramCache]: Analyzing trace with hash 2016119972, now seen corresponding path program 8 times [2022-11-22 02:18:19,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:19,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464924945] [2022-11-22 02:18:19,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:19,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:19,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:21,920 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:21,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:21,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464924945] [2022-11-22 02:18:21,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464924945] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:21,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:21,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:18:21,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541532495] [2022-11-22 02:18:21,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:21,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:21,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:21,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:21,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:21,922 INFO L87 Difference]: Start difference. First operand 209 states and 429 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:23,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:23,321 INFO L93 Difference]: Finished difference Result 279 states and 565 transitions. [2022-11-22 02:18:23,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:23,321 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:23,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:23,323 INFO L225 Difference]: With dead ends: 279 [2022-11-22 02:18:23,323 INFO L226 Difference]: Without dead ends: 258 [2022-11-22 02:18:23,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:18:23,324 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 59 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:23,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 1 Invalid, 663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 627 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:18:23,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2022-11-22 02:18:23,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 209. [2022-11-22 02:18:23,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 209 states, 207 states have (on average 2.072463768115942) internal successors, (429), 208 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:23,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 429 transitions. [2022-11-22 02:18:23,332 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 429 transitions. Word has length 21 [2022-11-22 02:18:23,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:23,332 INFO L495 AbstractCegarLoop]: Abstraction has 209 states and 429 transitions. [2022-11-22 02:18:23,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:23,332 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 429 transitions. [2022-11-22 02:18:23,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:23,333 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:23,333 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:23,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-22 02:18:23,334 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:23,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:23,334 INFO L85 PathProgramCache]: Analyzing trace with hash 1698755620, now seen corresponding path program 9 times [2022-11-22 02:18:23,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:23,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990886570] [2022-11-22 02:18:23,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:23,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:23,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:25,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:25,038 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:25,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990886570] [2022-11-22 02:18:25,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990886570] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:25,038 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:25,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:25,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380315490] [2022-11-22 02:18:25,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:25,039 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:25,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:25,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:25,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:25,040 INFO L87 Difference]: Start difference. First operand 209 states and 429 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:26,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:26,111 INFO L93 Difference]: Finished difference Result 247 states and 484 transitions. [2022-11-22 02:18:26,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:26,111 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:26,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:26,113 INFO L225 Difference]: With dead ends: 247 [2022-11-22 02:18:26,113 INFO L226 Difference]: Without dead ends: 234 [2022-11-22 02:18:26,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:26,116 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 31 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 534 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:26,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 2 Invalid, 546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 534 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:18:26,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-11-22 02:18:26,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 221. [2022-11-22 02:18:26,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 221 states, 219 states have (on average 2.036529680365297) internal successors, (446), 220 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:26,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 446 transitions. [2022-11-22 02:18:26,124 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 446 transitions. Word has length 21 [2022-11-22 02:18:26,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:26,124 INFO L495 AbstractCegarLoop]: Abstraction has 221 states and 446 transitions. [2022-11-22 02:18:26,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:26,124 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 446 transitions. [2022-11-22 02:18:26,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:26,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:26,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:26,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-22 02:18:26,126 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:26,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:26,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1146924132, now seen corresponding path program 10 times [2022-11-22 02:18:26,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:26,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1385049818] [2022-11-22 02:18:26,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:26,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:26,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:28,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:28,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:28,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1385049818] [2022-11-22 02:18:28,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1385049818] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:28,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:28,223 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:18:28,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655189612] [2022-11-22 02:18:28,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:28,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:28,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:28,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:28,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:28,224 INFO L87 Difference]: Start difference. First operand 221 states and 446 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:29,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:29,767 INFO L93 Difference]: Finished difference Result 279 states and 559 transitions. [2022-11-22 02:18:29,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:29,769 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:29,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:29,770 INFO L225 Difference]: With dead ends: 279 [2022-11-22 02:18:29,770 INFO L226 Difference]: Without dead ends: 253 [2022-11-22 02:18:29,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=458, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:18:29,772 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 822 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 822 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:29,772 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 822 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:18:29,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-11-22 02:18:29,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 214. [2022-11-22 02:18:29,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 214 states, 212 states have (on average 2.056603773584906) internal successors, (436), 213 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:29,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 214 states to 214 states and 436 transitions. [2022-11-22 02:18:29,784 INFO L78 Accepts]: Start accepts. Automaton has 214 states and 436 transitions. Word has length 21 [2022-11-22 02:18:29,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:29,785 INFO L495 AbstractCegarLoop]: Abstraction has 214 states and 436 transitions. [2022-11-22 02:18:29,785 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:29,785 INFO L276 IsEmpty]: Start isEmpty. Operand 214 states and 436 transitions. [2022-11-22 02:18:29,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:29,786 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:29,786 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:29,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-22 02:18:29,786 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:29,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:29,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1015214854, now seen corresponding path program 11 times [2022-11-22 02:18:29,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:29,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902851981] [2022-11-22 02:18:29,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:29,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:32,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:32,041 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:32,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [902851981] [2022-11-22 02:18:32,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [902851981] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:32,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:32,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 02:18:32,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687278480] [2022-11-22 02:18:32,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:32,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:18:32,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:32,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:18:32,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:18:32,043 INFO L87 Difference]: Start difference. First operand 214 states and 436 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:33,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:33,657 INFO L93 Difference]: Finished difference Result 282 states and 565 transitions. [2022-11-22 02:18:33,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:33,658 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:33,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:33,659 INFO L225 Difference]: With dead ends: 282 [2022-11-22 02:18:33,659 INFO L226 Difference]: Without dead ends: 256 [2022-11-22 02:18:33,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:18:33,660 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 768 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 768 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:33,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1 Invalid, 798 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 768 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-22 02:18:33,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2022-11-22 02:18:33,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 218. [2022-11-22 02:18:33,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 2.0462962962962963) internal successors, (442), 217 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:33,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 442 transitions. [2022-11-22 02:18:33,666 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 442 transitions. Word has length 21 [2022-11-22 02:18:33,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:33,666 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 442 transitions. [2022-11-22 02:18:33,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:33,667 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 442 transitions. [2022-11-22 02:18:33,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:33,668 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:33,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:33,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-22 02:18:33,668 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:33,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:33,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1505049058, now seen corresponding path program 12 times [2022-11-22 02:18:33,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:33,669 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [829783909] [2022-11-22 02:18:33,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:33,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:35,209 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:35,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:35,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [829783909] [2022-11-22 02:18:35,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [829783909] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:35,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:35,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:35,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174832830] [2022-11-22 02:18:35,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:35,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:35,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:35,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:35,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:35,212 INFO L87 Difference]: Start difference. First operand 218 states and 442 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:36,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:36,436 INFO L93 Difference]: Finished difference Result 289 states and 579 transitions. [2022-11-22 02:18:36,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:18:36,437 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:36,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:36,439 INFO L225 Difference]: With dead ends: 289 [2022-11-22 02:18:36,439 INFO L226 Difference]: Without dead ends: 268 [2022-11-22 02:18:36,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:36,439 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 54 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:36,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 615 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:18:36,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2022-11-22 02:18:36,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 218. [2022-11-22 02:18:36,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 216 states have (on average 2.0462962962962963) internal successors, (442), 217 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:36,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 442 transitions. [2022-11-22 02:18:36,446 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 442 transitions. Word has length 21 [2022-11-22 02:18:36,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:36,447 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 442 transitions. [2022-11-22 02:18:36,447 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:36,447 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 442 transitions. [2022-11-22 02:18:36,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:36,448 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:36,448 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:36,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-22 02:18:36,449 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:36,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:36,449 INFO L85 PathProgramCache]: Analyzing trace with hash -1822413410, now seen corresponding path program 13 times [2022-11-22 02:18:36,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:36,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061298508] [2022-11-22 02:18:36,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:36,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:36,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:37,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:37,864 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:37,864 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061298508] [2022-11-22 02:18:37,864 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061298508] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:37,864 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:37,864 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:37,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593844101] [2022-11-22 02:18:37,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:37,865 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:37,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:37,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:37,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:37,866 INFO L87 Difference]: Start difference. First operand 218 states and 442 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:38,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:38,933 INFO L93 Difference]: Finished difference Result 290 states and 574 transitions. [2022-11-22 02:18:38,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:38,933 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:38,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:38,935 INFO L225 Difference]: With dead ends: 290 [2022-11-22 02:18:38,935 INFO L226 Difference]: Without dead ends: 265 [2022-11-22 02:18:38,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:38,936 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 59 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 643 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:38,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 3 Invalid, 643 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:18:38,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-11-22 02:18:38,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 212. [2022-11-22 02:18:38,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 210 states have (on average 2.052380952380952) internal successors, (431), 211 states have internal predecessors, (431), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:38,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 431 transitions. [2022-11-22 02:18:38,943 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 431 transitions. Word has length 21 [2022-11-22 02:18:38,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:38,943 INFO L495 AbstractCegarLoop]: Abstraction has 212 states and 431 transitions. [2022-11-22 02:18:38,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:38,944 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 431 transitions. [2022-11-22 02:18:38,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:38,945 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:38,945 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:38,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-22 02:18:38,945 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:38,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:38,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1920722398, now seen corresponding path program 14 times [2022-11-22 02:18:38,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:38,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236171572] [2022-11-22 02:18:38,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:38,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:38,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:40,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:40,598 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:40,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236171572] [2022-11-22 02:18:40,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236171572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:40,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:40,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-22 02:18:40,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302111597] [2022-11-22 02:18:40,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:40,599 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-11-22 02:18:40,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:40,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-11-22 02:18:40,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:18:40,600 INFO L87 Difference]: Start difference. First operand 212 states and 431 transitions. Second operand has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:41,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:41,911 INFO L93 Difference]: Finished difference Result 245 states and 497 transitions. [2022-11-22 02:18:41,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:41,912 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:41,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:41,913 INFO L225 Difference]: With dead ends: 245 [2022-11-22 02:18:41,913 INFO L226 Difference]: Without dead ends: 217 [2022-11-22 02:18:41,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2022-11-22 02:18:41,914 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 54 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 663 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:41,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 1 Invalid, 695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 663 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:18:41,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-22 02:18:41,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 197. [2022-11-22 02:18:41,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 2.0974358974358975) internal successors, (409), 196 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:41,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 409 transitions. [2022-11-22 02:18:41,920 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 409 transitions. Word has length 21 [2022-11-22 02:18:41,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:41,920 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 409 transitions. [2022-11-22 02:18:41,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 1.4) internal successors, (21), 15 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:41,920 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 409 transitions. [2022-11-22 02:18:41,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:41,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:41,921 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:41,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-22 02:18:41,922 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:41,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:41,922 INFO L85 PathProgramCache]: Analyzing trace with hash 611083498, now seen corresponding path program 15 times [2022-11-22 02:18:41,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:41,923 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1144932466] [2022-11-22 02:18:41,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:41,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:43,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:43,544 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:43,544 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1144932466] [2022-11-22 02:18:43,545 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1144932466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:43,545 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:43,545 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:18:43,545 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680637840] [2022-11-22 02:18:43,545 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:43,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:43,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:43,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:43,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:43,546 INFO L87 Difference]: Start difference. First operand 197 states and 409 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:44,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:44,872 INFO L93 Difference]: Finished difference Result 230 states and 466 transitions. [2022-11-22 02:18:44,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:44,872 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:44,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:44,874 INFO L225 Difference]: With dead ends: 230 [2022-11-22 02:18:44,874 INFO L226 Difference]: Without dead ends: 203 [2022-11-22 02:18:44,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:18:44,875 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:44,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:18:44,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-11-22 02:18:44,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2022-11-22 02:18:44,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 2.0923076923076924) internal successors, (408), 196 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:44,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 408 transitions. [2022-11-22 02:18:44,881 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 408 transitions. Word has length 21 [2022-11-22 02:18:44,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:44,881 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 408 transitions. [2022-11-22 02:18:44,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:44,881 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 408 transitions. [2022-11-22 02:18:44,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:44,882 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:44,882 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:44,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-22 02:18:44,883 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:44,883 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:44,883 INFO L85 PathProgramCache]: Analyzing trace with hash -582612624, now seen corresponding path program 16 times [2022-11-22 02:18:44,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:44,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521534532] [2022-11-22 02:18:44,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:44,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:46,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:46,126 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:46,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521534532] [2022-11-22 02:18:46,126 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521534532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:46,126 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:46,126 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:46,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1674722233] [2022-11-22 02:18:46,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:46,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:46,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:46,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:46,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:46,128 INFO L87 Difference]: Start difference. First operand 197 states and 408 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:47,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:47,123 INFO L93 Difference]: Finished difference Result 241 states and 488 transitions. [2022-11-22 02:18:47,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:18:47,123 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:47,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:47,125 INFO L225 Difference]: With dead ends: 241 [2022-11-22 02:18:47,125 INFO L226 Difference]: Without dead ends: 215 [2022-11-22 02:18:47,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:47,126 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 45 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 595 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:47,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 5 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 595 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:18:47,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-22 02:18:47,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 197. [2022-11-22 02:18:47,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 195 states have (on average 2.082051282051282) internal successors, (406), 196 states have internal predecessors, (406), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:47,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 406 transitions. [2022-11-22 02:18:47,131 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 406 transitions. Word has length 21 [2022-11-22 02:18:47,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:47,132 INFO L495 AbstractCegarLoop]: Abstraction has 197 states and 406 transitions. [2022-11-22 02:18:47,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:47,132 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 406 transitions. [2022-11-22 02:18:47,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:47,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:47,133 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:47,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-22 02:18:47,133 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:47,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:47,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1389811180, now seen corresponding path program 17 times [2022-11-22 02:18:47,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:47,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610681943] [2022-11-22 02:18:47,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:47,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:47,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:48,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:48,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610681943] [2022-11-22 02:18:48,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610681943] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:48,283 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:48,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:48,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588980427] [2022-11-22 02:18:48,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:48,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:48,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:48,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:48,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:48,284 INFO L87 Difference]: Start difference. First operand 197 states and 406 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:49,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:49,203 INFO L93 Difference]: Finished difference Result 237 states and 475 transitions. [2022-11-22 02:18:49,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:49,204 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:49,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:49,207 INFO L225 Difference]: With dead ends: 237 [2022-11-22 02:18:49,208 INFO L226 Difference]: Without dead ends: 224 [2022-11-22 02:18:49,208 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:49,209 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 52 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 537 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 5 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:49,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 5 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 537 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:18:49,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-22 02:18:49,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 199. [2022-11-22 02:18:49,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 197 states have (on average 2.0710659898477157) internal successors, (408), 198 states have internal predecessors, (408), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:49,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 408 transitions. [2022-11-22 02:18:49,216 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 408 transitions. Word has length 21 [2022-11-22 02:18:49,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:49,216 INFO L495 AbstractCegarLoop]: Abstraction has 199 states and 408 transitions. [2022-11-22 02:18:49,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:49,217 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 408 transitions. [2022-11-22 02:18:49,218 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:49,218 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:49,218 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:49,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-22 02:18:49,219 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:49,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:49,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1941642668, now seen corresponding path program 18 times [2022-11-22 02:18:49,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:49,220 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [182833035] [2022-11-22 02:18:49,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:49,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:49,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:50,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:50,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [182833035] [2022-11-22 02:18:50,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [182833035] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:50,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:50,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:18:50,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250431572] [2022-11-22 02:18:50,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:50,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:50,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:50,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:50,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:50,732 INFO L87 Difference]: Start difference. First operand 199 states and 408 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:51,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:51,957 INFO L93 Difference]: Finished difference Result 218 states and 442 transitions. [2022-11-22 02:18:51,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:18:51,958 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:51,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:51,959 INFO L225 Difference]: With dead ends: 218 [2022-11-22 02:18:51,959 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 02:18:51,960 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:18:51,960 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 52 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 668 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:51,961 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 1 Invalid, 668 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:18:51,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 02:18:51,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 186. [2022-11-22 02:18:51,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 184 states have (on average 2.114130434782609) internal successors, (389), 185 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:51,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 389 transitions. [2022-11-22 02:18:51,966 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 389 transitions. Word has length 21 [2022-11-22 02:18:51,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:51,966 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 389 transitions. [2022-11-22 02:18:51,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:51,966 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 389 transitions. [2022-11-22 02:18:51,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:51,967 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:51,967 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:51,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-22 02:18:51,967 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:51,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:51,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1439746076, now seen corresponding path program 19 times [2022-11-22 02:18:51,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:51,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976346111] [2022-11-22 02:18:51,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:51,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:52,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:53,173 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:53,173 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:53,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976346111] [2022-11-22 02:18:53,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976346111] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:53,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:53,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:53,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828683821] [2022-11-22 02:18:53,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:53,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:53,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:53,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:53,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:53,175 INFO L87 Difference]: Start difference. First operand 186 states and 389 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:54,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:54,163 INFO L93 Difference]: Finished difference Result 213 states and 430 transitions. [2022-11-22 02:18:54,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:18:54,163 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:54,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:54,164 INFO L225 Difference]: With dead ends: 213 [2022-11-22 02:18:54,165 INFO L226 Difference]: Without dead ends: 186 [2022-11-22 02:18:54,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:54,165 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 36 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 507 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:54,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3 Invalid, 507 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:18:54,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-11-22 02:18:54,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 186. [2022-11-22 02:18:54,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 186 states, 184 states have (on average 2.108695652173913) internal successors, (388), 185 states have internal predecessors, (388), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 388 transitions. [2022-11-22 02:18:54,171 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 388 transitions. Word has length 21 [2022-11-22 02:18:54,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:54,171 INFO L495 AbstractCegarLoop]: Abstraction has 186 states and 388 transitions. [2022-11-22 02:18:54,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:54,171 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 388 transitions. [2022-11-22 02:18:54,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:54,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:54,172 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:54,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-22 02:18:54,173 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:54,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:54,173 INFO L85 PathProgramCache]: Analyzing trace with hash 246049954, now seen corresponding path program 20 times [2022-11-22 02:18:54,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:54,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839590097] [2022-11-22 02:18:54,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:54,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:54,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:55,423 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:55,423 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:55,423 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839590097] [2022-11-22 02:18:55,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839590097] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:55,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:55,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:18:55,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612869917] [2022-11-22 02:18:55,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:55,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:18:55,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:55,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:18:55,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:18:55,424 INFO L87 Difference]: Start difference. First operand 186 states and 388 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:56,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:56,321 INFO L93 Difference]: Finished difference Result 240 states and 481 transitions. [2022-11-22 02:18:56,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:18:56,322 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:56,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:56,323 INFO L225 Difference]: With dead ends: 240 [2022-11-22 02:18:56,323 INFO L226 Difference]: Without dead ends: 214 [2022-11-22 02:18:56,323 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:18:56,324 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 49 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 447 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 470 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 447 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:56,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2 Invalid, 470 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 447 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:18:56,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2022-11-22 02:18:56,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 188. [2022-11-22 02:18:56,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 186 states have (on average 2.096774193548387) internal successors, (390), 187 states have internal predecessors, (390), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:56,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 390 transitions. [2022-11-22 02:18:56,329 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 390 transitions. Word has length 21 [2022-11-22 02:18:56,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:56,330 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 390 transitions. [2022-11-22 02:18:56,330 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:56,330 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 390 transitions. [2022-11-22 02:18:56,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:56,331 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:56,331 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:56,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-22 02:18:56,331 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:56,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:56,332 INFO L85 PathProgramCache]: Analyzing trace with hash -243784250, now seen corresponding path program 21 times [2022-11-22 02:18:56,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:56,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [962787813] [2022-11-22 02:18:56,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:56,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:56,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:18:57,979 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:18:57,979 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:18:57,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [962787813] [2022-11-22 02:18:57,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [962787813] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:18:57,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:18:57,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:18:57,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656198364] [2022-11-22 02:18:57,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:18:57,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:18:57,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:18:57,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:18:57,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:18:57,981 INFO L87 Difference]: Start difference. First operand 188 states and 390 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:59,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:18:59,259 INFO L93 Difference]: Finished difference Result 238 states and 473 transitions. [2022-11-22 02:18:59,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:18:59,260 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:18:59,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:18:59,261 INFO L225 Difference]: With dead ends: 238 [2022-11-22 02:18:59,261 INFO L226 Difference]: Without dead ends: 217 [2022-11-22 02:18:59,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=95, Invalid=457, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:18:59,262 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 626 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:18:59,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 626 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:18:59,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2022-11-22 02:18:59,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 200. [2022-11-22 02:18:59,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 198 states have (on average 2.0656565656565657) internal successors, (409), 199 states have internal predecessors, (409), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:59,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 409 transitions. [2022-11-22 02:18:59,268 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 409 transitions. Word has length 21 [2022-11-22 02:18:59,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:18:59,268 INFO L495 AbstractCegarLoop]: Abstraction has 200 states and 409 transitions. [2022-11-22 02:18:59,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:18:59,269 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 409 transitions. [2022-11-22 02:18:59,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:18:59,269 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:18:59,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:18:59,270 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-22 02:18:59,270 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:18:59,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:18:59,270 INFO L85 PathProgramCache]: Analyzing trace with hash -561148602, now seen corresponding path program 22 times [2022-11-22 02:18:59,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:18:59,271 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1158646320] [2022-11-22 02:18:59,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:18:59,271 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:18:59,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:00,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:00,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:00,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1158646320] [2022-11-22 02:19:00,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1158646320] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:00,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:00,448 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-22 02:19:00,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26127433] [2022-11-22 02:19:00,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:00,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-22 02:19:00,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:00,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-22 02:19:00,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2022-11-22 02:19:00,449 INFO L87 Difference]: Start difference. First operand 200 states and 409 transitions. Second operand has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:01,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:01,418 INFO L93 Difference]: Finished difference Result 238 states and 469 transitions. [2022-11-22 02:19:01,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:19:01,418 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:01,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:01,419 INFO L225 Difference]: With dead ends: 238 [2022-11-22 02:19:01,419 INFO L226 Difference]: Without dead ends: 225 [2022-11-22 02:19:01,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=314, Unknown=0, NotChecked=0, Total=380 [2022-11-22 02:19:01,420 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 43 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:01,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 2 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:19:01,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2022-11-22 02:19:01,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 206. [2022-11-22 02:19:01,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 204 states have (on average 2.053921568627451) internal successors, (419), 205 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:01,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 419 transitions. [2022-11-22 02:19:01,426 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 419 transitions. Word has length 21 [2022-11-22 02:19:01,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:01,426 INFO L495 AbstractCegarLoop]: Abstraction has 206 states and 419 transitions. [2022-11-22 02:19:01,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.6153846153846154) internal successors, (21), 13 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:01,427 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 419 transitions. [2022-11-22 02:19:01,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:01,427 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:01,428 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:01,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-22 02:19:01,428 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:01,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:01,428 INFO L85 PathProgramCache]: Analyzing trace with hash -1112980090, now seen corresponding path program 23 times [2022-11-22 02:19:01,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:01,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267205422] [2022-11-22 02:19:01,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:01,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:02,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:02,931 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:02,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267205422] [2022-11-22 02:19:02,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267205422] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:02,931 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:02,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:02,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943749035] [2022-11-22 02:19:02,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:02,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:02,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:02,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:02,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:02,933 INFO L87 Difference]: Start difference. First operand 206 states and 419 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:04,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:04,247 INFO L93 Difference]: Finished difference Result 234 states and 461 transitions. [2022-11-22 02:19:04,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:04,248 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:04,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:04,249 INFO L225 Difference]: With dead ends: 234 [2022-11-22 02:19:04,249 INFO L226 Difference]: Without dead ends: 209 [2022-11-22 02:19:04,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:04,250 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 635 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:04,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 1 Invalid, 662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 635 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:19:04,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 209 states. [2022-11-22 02:19:04,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 209 to 196. [2022-11-22 02:19:04,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 194 states have (on average 2.0721649484536084) internal successors, (402), 195 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:04,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 402 transitions. [2022-11-22 02:19:04,256 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 402 transitions. Word has length 21 [2022-11-22 02:19:04,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:04,257 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 402 transitions. [2022-11-22 02:19:04,257 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:04,257 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 402 transitions. [2022-11-22 02:19:04,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:04,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:04,258 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:04,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-22 02:19:04,258 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:04,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:04,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1023032710, now seen corresponding path program 24 times [2022-11-22 02:19:04,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:04,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [632305431] [2022-11-22 02:19:04,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:04,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:04,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:05,811 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:05,812 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:05,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [632305431] [2022-11-22 02:19:05,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [632305431] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:05,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:05,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:05,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1240407244] [2022-11-22 02:19:05,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:05,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:05,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:05,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:05,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:05,813 INFO L87 Difference]: Start difference. First operand 196 states and 402 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:06,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:06,979 INFO L93 Difference]: Finished difference Result 224 states and 444 transitions. [2022-11-22 02:19:06,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:19:06,980 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:06,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:06,981 INFO L225 Difference]: With dead ends: 224 [2022-11-22 02:19:06,981 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 02:19:06,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:06,982 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 44 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 538 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 538 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:06,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 1 Invalid, 565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 538 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:19:06,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 02:19:06,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 192. [2022-11-22 02:19:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 2.0842105263157893) internal successors, (396), 191 states have internal predecessors, (396), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:06,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 396 transitions. [2022-11-22 02:19:06,987 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 396 transitions. Word has length 21 [2022-11-22 02:19:06,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:06,988 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 396 transitions. [2022-11-22 02:19:06,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:06,988 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 396 transitions. [2022-11-22 02:19:06,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:06,989 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:06,989 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:06,989 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-22 02:19:06,989 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:06,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:06,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1321407020, now seen corresponding path program 25 times [2022-11-22 02:19:06,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:06,990 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876623188] [2022-11-22 02:19:06,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:06,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:07,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:08,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:08,553 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:08,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876623188] [2022-11-22 02:19:08,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876623188] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:08,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:08,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:08,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1324141466] [2022-11-22 02:19:08,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:08,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:08,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:08,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:08,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:08,557 INFO L87 Difference]: Start difference. First operand 192 states and 396 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:09,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:09,725 INFO L93 Difference]: Finished difference Result 225 states and 451 transitions. [2022-11-22 02:19:09,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:19:09,726 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:09,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:09,727 INFO L225 Difference]: With dead ends: 225 [2022-11-22 02:19:09,727 INFO L226 Difference]: Without dead ends: 204 [2022-11-22 02:19:09,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:09,728 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:09,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 1 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:19:09,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2022-11-22 02:19:09,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2022-11-22 02:19:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 190 states have (on average 2.0736842105263156) internal successors, (394), 191 states have internal predecessors, (394), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:09,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 394 transitions. [2022-11-22 02:19:09,732 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 394 transitions. Word has length 21 [2022-11-22 02:19:09,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:09,733 INFO L495 AbstractCegarLoop]: Abstraction has 192 states and 394 transitions. [2022-11-22 02:19:09,733 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:09,733 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 394 transitions. [2022-11-22 02:19:09,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:09,734 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:09,734 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:09,734 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-22 02:19:09,734 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:09,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:09,735 INFO L85 PathProgramCache]: Analyzing trace with hash 452211180, now seen corresponding path program 26 times [2022-11-22 02:19:09,735 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:09,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591585284] [2022-11-22 02:19:09,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:09,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:10,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:10,838 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:10,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591585284] [2022-11-22 02:19:10,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591585284] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:10,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:10,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:10,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984998331] [2022-11-22 02:19:10,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:10,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:10,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:10,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:10,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=178, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:10,840 INFO L87 Difference]: Start difference. First operand 192 states and 394 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:11,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:11,668 INFO L93 Difference]: Finished difference Result 215 states and 431 transitions. [2022-11-22 02:19:11,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:19:11,668 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:11,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:11,670 INFO L225 Difference]: With dead ends: 215 [2022-11-22 02:19:11,670 INFO L226 Difference]: Without dead ends: 190 [2022-11-22 02:19:11,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=77, Invalid=343, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:11,671 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 50 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 419 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:11,671 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 419 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-22 02:19:11,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2022-11-22 02:19:11,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 180. [2022-11-22 02:19:11,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 178 states have (on average 2.106741573033708) internal successors, (375), 179 states have internal predecessors, (375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:11,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 375 transitions. [2022-11-22 02:19:11,676 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 375 transitions. Word has length 21 [2022-11-22 02:19:11,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:11,676 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 375 transitions. [2022-11-22 02:19:11,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:11,676 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 375 transitions. [2022-11-22 02:19:11,677 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:11,677 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:11,677 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:11,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-22 02:19:11,678 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:11,678 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:11,678 INFO L85 PathProgramCache]: Analyzing trace with hash 542158560, now seen corresponding path program 27 times [2022-11-22 02:19:11,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:11,678 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015518041] [2022-11-22 02:19:11,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:11,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:11,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:13,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:13,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015518041] [2022-11-22 02:19:13,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015518041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:13,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:13,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:13,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850178537] [2022-11-22 02:19:13,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:13,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:13,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:13,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:13,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:13,187 INFO L87 Difference]: Start difference. First operand 180 states and 375 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:14,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:14,314 INFO L93 Difference]: Finished difference Result 208 states and 417 transitions. [2022-11-22 02:19:14,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:19:14,314 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:14,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:14,315 INFO L225 Difference]: With dead ends: 208 [2022-11-22 02:19:14,315 INFO L226 Difference]: Without dead ends: 178 [2022-11-22 02:19:14,315 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:14,315 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 544 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:14,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 1 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 544 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:19:14,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2022-11-22 02:19:14,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2022-11-22 02:19:14,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 178 states, 176 states have (on average 2.1079545454545454) internal successors, (371), 177 states have internal predecessors, (371), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:14,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 371 transitions. [2022-11-22 02:19:14,320 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 371 transitions. Word has length 21 [2022-11-22 02:19:14,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:14,321 INFO L495 AbstractCegarLoop]: Abstraction has 178 states and 371 transitions. [2022-11-22 02:19:14,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:14,321 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 371 transitions. [2022-11-22 02:19:14,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:14,322 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:14,322 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:14,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-22 02:19:14,322 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:14,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:14,323 INFO L85 PathProgramCache]: Analyzing trace with hash 1500451970, now seen corresponding path program 28 times [2022-11-22 02:19:14,323 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:14,323 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1773713079] [2022-11-22 02:19:14,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:14,323 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:15,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:15,932 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:15,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1773713079] [2022-11-22 02:19:15,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1773713079] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:15,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:15,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:15,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583591439] [2022-11-22 02:19:15,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:15,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:15,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:15,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:15,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=234, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:15,934 INFO L87 Difference]: Start difference. First operand 178 states and 371 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:17,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:17,089 INFO L93 Difference]: Finished difference Result 203 states and 410 transitions. [2022-11-22 02:19:17,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-22 02:19:17,091 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:17,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:17,092 INFO L225 Difference]: With dead ends: 203 [2022-11-22 02:19:17,092 INFO L226 Difference]: Without dead ends: 170 [2022-11-22 02:19:17,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=102, Invalid=450, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:17,093 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:17,093 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 1 Invalid, 581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-22 02:19:17,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2022-11-22 02:19:17,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 170. [2022-11-22 02:19:17,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 2.1488095238095237) internal successors, (361), 169 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:17,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 361 transitions. [2022-11-22 02:19:17,098 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 361 transitions. Word has length 21 [2022-11-22 02:19:17,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:17,098 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 361 transitions. [2022-11-22 02:19:17,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:17,098 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 361 transitions. [2022-11-22 02:19:17,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:17,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:17,099 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-22 02:19:17,100 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:17,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:17,100 INFO L85 PathProgramCache]: Analyzing trace with hash -1144256356, now seen corresponding path program 29 times [2022-11-22 02:19:17,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:17,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852422270] [2022-11-22 02:19:17,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:17,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:17,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:18,345 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:18,345 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:18,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852422270] [2022-11-22 02:19:18,345 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852422270] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:18,345 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:18,345 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:18,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311394570] [2022-11-22 02:19:18,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:18,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:18,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:18,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:18,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:18,347 INFO L87 Difference]: Start difference. First operand 170 states and 361 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:19,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:19,452 INFO L93 Difference]: Finished difference Result 255 states and 512 transitions. [2022-11-22 02:19:19,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:19,453 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:19,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:19,454 INFO L225 Difference]: With dead ends: 255 [2022-11-22 02:19:19,454 INFO L226 Difference]: Without dead ends: 224 [2022-11-22 02:19:19,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=84, Invalid=378, Unknown=0, NotChecked=0, Total=462 [2022-11-22 02:19:19,455 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 52 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:19,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 6 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 620 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:19:19,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-11-22 02:19:19,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 171. [2022-11-22 02:19:19,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 169 states have (on average 2.1420118343195265) internal successors, (362), 170 states have internal predecessors, (362), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:19,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 362 transitions. [2022-11-22 02:19:19,460 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 362 transitions. Word has length 21 [2022-11-22 02:19:19,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:19,460 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 362 transitions. [2022-11-22 02:19:19,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:19,460 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 362 transitions. [2022-11-22 02:19:19,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:19,461 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:19,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:19,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-22 02:19:19,462 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:19,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:19,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1242674266, now seen corresponding path program 30 times [2022-11-22 02:19:19,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:19,463 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1543779915] [2022-11-22 02:19:19,463 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:19,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:19,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:19,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:19,781 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:19,781 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1543779915] [2022-11-22 02:19:19,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1543779915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:19,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:19,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:19:19,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941485874] [2022-11-22 02:19:19,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:19,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:19:19,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:19,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:19:19,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:19:19,783 INFO L87 Difference]: Start difference. First operand 171 states and 362 transitions. Second operand has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:19,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:19,910 INFO L93 Difference]: Finished difference Result 183 states and 369 transitions. [2022-11-22 02:19:19,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:19:19,910 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:19,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:19,911 INFO L225 Difference]: With dead ends: 183 [2022-11-22 02:19:19,911 INFO L226 Difference]: Without dead ends: 182 [2022-11-22 02:19:19,911 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:19:19,911 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 57 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:19,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [57 Valid, 3 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:19,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-22 02:19:19,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 170. [2022-11-22 02:19:19,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 2.0714285714285716) internal successors, (348), 169 states have internal predecessors, (348), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:19,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 348 transitions. [2022-11-22 02:19:19,916 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 348 transitions. Word has length 21 [2022-11-22 02:19:19,916 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:19,916 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 348 transitions. [2022-11-22 02:19:19,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.5) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:19,916 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 348 transitions. [2022-11-22 02:19:19,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:19,917 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:19,917 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:19,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-22 02:19:19,918 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:19,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:19,918 INFO L85 PathProgramCache]: Analyzing trace with hash 1957014818, now seen corresponding path program 31 times [2022-11-22 02:19:19,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:19,919 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893526934] [2022-11-22 02:19:19,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:19,919 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:19,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:21,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:21,470 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:21,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893526934] [2022-11-22 02:19:21,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893526934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:21,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:21,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:21,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50699780] [2022-11-22 02:19:21,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:21,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:21,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:21,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:21,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:21,471 INFO L87 Difference]: Start difference. First operand 170 states and 348 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:22,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:22,679 INFO L93 Difference]: Finished difference Result 241 states and 481 transitions. [2022-11-22 02:19:22,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:22,679 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:22,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:22,680 INFO L225 Difference]: With dead ends: 241 [2022-11-22 02:19:22,680 INFO L226 Difference]: Without dead ends: 215 [2022-11-22 02:19:22,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:22,680 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 625 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:22,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1 Invalid, 625 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:19:22,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-11-22 02:19:22,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 170. [2022-11-22 02:19:22,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 168 states have (on average 2.0595238095238093) internal successors, (346), 169 states have internal predecessors, (346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:22,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 346 transitions. [2022-11-22 02:19:22,684 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 346 transitions. Word has length 21 [2022-11-22 02:19:22,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:22,685 INFO L495 AbstractCegarLoop]: Abstraction has 170 states and 346 transitions. [2022-11-22 02:19:22,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:22,685 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 346 transitions. [2022-11-22 02:19:22,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:22,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:22,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:22,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-22 02:19:22,686 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:22,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:22,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1467180614, now seen corresponding path program 32 times [2022-11-22 02:19:22,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:22,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368542176] [2022-11-22 02:19:22,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:22,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:22,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:24,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:24,221 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:24,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368542176] [2022-11-22 02:19:24,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368542176] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:24,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:24,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:24,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397647066] [2022-11-22 02:19:24,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:24,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:24,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:24,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:24,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:24,222 INFO L87 Difference]: Start difference. First operand 170 states and 346 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:25,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:25,523 INFO L93 Difference]: Finished difference Result 227 states and 457 transitions. [2022-11-22 02:19:25,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:25,524 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:25,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:25,525 INFO L225 Difference]: With dead ends: 227 [2022-11-22 02:19:25,525 INFO L226 Difference]: Without dead ends: 206 [2022-11-22 02:19:25,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=96, Invalid=456, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:25,526 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:25,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1 Invalid, 692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:19:25,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2022-11-22 02:19:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 174. [2022-11-22 02:19:25,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 172 states have (on average 2.046511627906977) internal successors, (352), 173 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:25,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 352 transitions. [2022-11-22 02:19:25,531 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 352 transitions. Word has length 21 [2022-11-22 02:19:25,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:25,531 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 352 transitions. [2022-11-22 02:19:25,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:25,532 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 352 transitions. [2022-11-22 02:19:25,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:25,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:25,532 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:25,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-22 02:19:25,533 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:25,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:25,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1149816262, now seen corresponding path program 33 times [2022-11-22 02:19:25,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:25,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071851893] [2022-11-22 02:19:25,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:25,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:26,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:26,568 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:26,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071851893] [2022-11-22 02:19:26,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071851893] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:26,568 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:26,568 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:26,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697801009] [2022-11-22 02:19:26,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:26,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:26,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:26,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:26,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:26,569 INFO L87 Difference]: Start difference. First operand 174 states and 352 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:27,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:27,575 INFO L93 Difference]: Finished difference Result 246 states and 486 transitions. [2022-11-22 02:19:27,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:27,576 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:27,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:27,577 INFO L225 Difference]: With dead ends: 246 [2022-11-22 02:19:27,577 INFO L226 Difference]: Without dead ends: 233 [2022-11-22 02:19:27,578 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:27,578 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 55 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 608 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 608 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:27,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 3 Invalid, 634 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 608 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:19:27,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-11-22 02:19:27,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 176. [2022-11-22 02:19:27,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 174 states have (on average 2.0344827586206895) internal successors, (354), 175 states have internal predecessors, (354), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:27,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 354 transitions. [2022-11-22 02:19:27,583 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 354 transitions. Word has length 21 [2022-11-22 02:19:27,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:27,583 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 354 transitions. [2022-11-22 02:19:27,584 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:27,584 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 354 transitions. [2022-11-22 02:19:27,584 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:27,584 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:27,585 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:27,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-22 02:19:27,585 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:27,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:27,585 INFO L85 PathProgramCache]: Analyzing trace with hash 597984774, now seen corresponding path program 34 times [2022-11-22 02:19:27,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:27,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831001690] [2022-11-22 02:19:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:27,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:27,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:28,890 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:28,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831001690] [2022-11-22 02:19:28,891 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831001690] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:28,891 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:28,891 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:28,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1665628297] [2022-11-22 02:19:28,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:28,891 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:28,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:28,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:28,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:28,892 INFO L87 Difference]: Start difference. First operand 176 states and 354 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:30,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:30,074 INFO L93 Difference]: Finished difference Result 217 states and 435 transitions. [2022-11-22 02:19:30,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-22 02:19:30,074 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:30,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:30,075 INFO L225 Difference]: With dead ends: 217 [2022-11-22 02:19:30,075 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 02:19:30,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=455, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:30,075 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 622 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 622 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:30,076 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 1 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 622 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:19:30,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 02:19:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 164. [2022-11-22 02:19:30,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 162 states have (on average 2.067901234567901) internal successors, (335), 163 states have internal predecessors, (335), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:30,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 335 transitions. [2022-11-22 02:19:30,080 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 335 transitions. Word has length 21 [2022-11-22 02:19:30,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:30,080 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 335 transitions. [2022-11-22 02:19:30,080 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 335 transitions. [2022-11-22 02:19:30,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:30,081 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:30,081 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:30,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-22 02:19:30,082 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:30,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash 687932154, now seen corresponding path program 35 times [2022-11-22 02:19:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:30,082 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959677038] [2022-11-22 02:19:30,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:30,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:31,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:31,637 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:31,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959677038] [2022-11-22 02:19:31,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959677038] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:31,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:31,638 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:31,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981528656] [2022-11-22 02:19:31,638 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:31,638 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:31,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:31,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:31,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:31,639 INFO L87 Difference]: Start difference. First operand 164 states and 335 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:33,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:33,017 INFO L93 Difference]: Finished difference Result 222 states and 432 transitions. [2022-11-22 02:19:33,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:33,018 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:33,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:33,018 INFO L225 Difference]: With dead ends: 222 [2022-11-22 02:19:33,018 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 02:19:33,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:33,019 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 684 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:33,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 1 Invalid, 705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 684 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-22 02:19:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 02:19:33,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 162. [2022-11-22 02:19:33,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 162 states, 160 states have (on average 2.06875) internal successors, (331), 161 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:33,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 331 transitions. [2022-11-22 02:19:33,024 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 331 transitions. Word has length 21 [2022-11-22 02:19:33,024 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:33,024 INFO L495 AbstractCegarLoop]: Abstraction has 162 states and 331 transitions. [2022-11-22 02:19:33,024 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:33,024 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 331 transitions. [2022-11-22 02:19:33,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:33,025 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:33,025 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:33,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-22 02:19:33,025 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:33,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:33,026 INFO L85 PathProgramCache]: Analyzing trace with hash 1646225564, now seen corresponding path program 36 times [2022-11-22 02:19:33,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:33,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818605846] [2022-11-22 02:19:33,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:33,027 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:33,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:34,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:34,519 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:34,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818605846] [2022-11-22 02:19:34,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818605846] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:34,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:34,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:34,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1602631946] [2022-11-22 02:19:34,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:34,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:34,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:34,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:34,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:34,521 INFO L87 Difference]: Start difference. First operand 162 states and 331 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:35,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:35,722 INFO L93 Difference]: Finished difference Result 223 states and 433 transitions. [2022-11-22 02:19:35,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:35,722 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:35,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:35,724 INFO L225 Difference]: With dead ends: 223 [2022-11-22 02:19:35,724 INFO L226 Difference]: Without dead ends: 192 [2022-11-22 02:19:35,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:35,725 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 39 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 547 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 1 SdHoareTripleChecker+Invalid, 572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:35,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 1 Invalid, 572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [25 Valid, 547 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:19:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 192 states. [2022-11-22 02:19:35,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 192 to 160. [2022-11-22 02:19:35,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 158 states have (on average 2.069620253164557) internal successors, (327), 159 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:35,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 327 transitions. [2022-11-22 02:19:35,738 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 327 transitions. Word has length 21 [2022-11-22 02:19:35,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:35,738 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 327 transitions. [2022-11-22 02:19:35,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:35,738 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 327 transitions. [2022-11-22 02:19:35,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:35,739 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:35,739 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:35,739 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-22 02:19:35,740 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:35,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:35,740 INFO L85 PathProgramCache]: Analyzing trace with hash 684022522, now seen corresponding path program 37 times [2022-11-22 02:19:35,740 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:35,740 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001911663] [2022-11-22 02:19:35,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:35,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:37,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:37,202 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:37,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001911663] [2022-11-22 02:19:37,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2001911663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:37,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:37,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-11-22 02:19:37,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213065931] [2022-11-22 02:19:37,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:37,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-22 02:19:37,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:37,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-22 02:19:37,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2022-11-22 02:19:37,204 INFO L87 Difference]: Start difference. First operand 160 states and 327 transitions. Second operand has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:38,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:38,409 INFO L93 Difference]: Finished difference Result 211 states and 414 transitions. [2022-11-22 02:19:38,415 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:19:38,415 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:38,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:38,416 INFO L225 Difference]: With dead ends: 211 [2022-11-22 02:19:38,416 INFO L226 Difference]: Without dead ends: 182 [2022-11-22 02:19:38,417 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=101, Invalid=451, Unknown=0, NotChecked=0, Total=552 [2022-11-22 02:19:38,417 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 37 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 586 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:38,417 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2 Invalid, 609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 586 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-22 02:19:38,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-11-22 02:19:38,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 152. [2022-11-22 02:19:38,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 150 states have (on average 2.1) internal successors, (315), 151 states have internal predecessors, (315), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:38,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 315 transitions. [2022-11-22 02:19:38,421 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 315 transitions. Word has length 21 [2022-11-22 02:19:38,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:38,422 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 315 transitions. [2022-11-22 02:19:38,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 1.3125) internal successors, (21), 16 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:38,422 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 315 transitions. [2022-11-22 02:19:38,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:38,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:38,423 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:38,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-22 02:19:38,423 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:38,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:38,424 INFO L85 PathProgramCache]: Analyzing trace with hash 736448430, now seen corresponding path program 38 times [2022-11-22 02:19:38,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:38,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1831114739] [2022-11-22 02:19:38,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:38,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:38,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:38,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:38,705 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:38,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1831114739] [2022-11-22 02:19:38,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1831114739] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:38,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:38,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:19:38,706 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495392203] [2022-11-22 02:19:38,706 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:38,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:19:38,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:38,707 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:19:38,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:19:38,707 INFO L87 Difference]: Start difference. First operand 152 states and 315 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:38,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:38,817 INFO L93 Difference]: Finished difference Result 43 states and 62 transitions. [2022-11-22 02:19:38,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:19:38,817 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:38,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:38,818 INFO L225 Difference]: With dead ends: 43 [2022-11-22 02:19:38,818 INFO L226 Difference]: Without dead ends: 43 [2022-11-22 02:19:38,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:19:38,818 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 40 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:38,819 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 4 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:38,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-22 02:19:38,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-22 02:19:38,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.5121951219512195) internal successors, (62), 42 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:38,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 62 transitions. [2022-11-22 02:19:38,820 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 62 transitions. Word has length 21 [2022-11-22 02:19:38,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:38,821 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 62 transitions. [2022-11-22 02:19:38,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:38,821 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 62 transitions. [2022-11-22 02:19:38,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:38,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:38,821 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:38,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-22 02:19:38,822 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:38,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:38,822 INFO L85 PathProgramCache]: Analyzing trace with hash -625383762, now seen corresponding path program 39 times [2022-11-22 02:19:38,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:38,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947135093] [2022-11-22 02:19:38,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:38,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:38,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:40,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:40,088 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:40,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947135093] [2022-11-22 02:19:40,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947135093] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:40,088 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:40,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:40,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353115728] [2022-11-22 02:19:40,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:40,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:40,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:40,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:40,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:40,090 INFO L87 Difference]: Start difference. First operand 43 states and 62 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:40,915 INFO L93 Difference]: Finished difference Result 57 states and 76 transitions. [2022-11-22 02:19:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:40,915 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:40,916 INFO L225 Difference]: With dead ends: 57 [2022-11-22 02:19:40,916 INFO L226 Difference]: Without dead ends: 57 [2022-11-22 02:19:40,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:40,917 INFO L413 NwaCegarLoop]: 3 mSDtfsCounter, 18 mSDsluCounter, 3 mSDsCounter, 0 mSdLazyCounter, 366 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 6 SdHoareTripleChecker+Invalid, 377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:40,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 6 Invalid, 377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 366 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:19:40,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2022-11-22 02:19:40,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2022-11-22 02:19:40,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 55 states have (on average 1.3818181818181818) internal successors, (76), 56 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 76 transitions. [2022-11-22 02:19:40,919 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 76 transitions. Word has length 21 [2022-11-22 02:19:40,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:40,919 INFO L495 AbstractCegarLoop]: Abstraction has 57 states and 76 transitions. [2022-11-22 02:19:40,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:40,919 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 76 transitions. [2022-11-22 02:19:40,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:40,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:40,919 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:40,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-22 02:19:40,920 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:40,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:40,920 INFO L85 PathProgramCache]: Analyzing trace with hash -625383782, now seen corresponding path program 4 times [2022-11-22 02:19:40,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:40,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530829726] [2022-11-22 02:19:40,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:40,921 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:40,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:41,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:41,363 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:41,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530829726] [2022-11-22 02:19:41,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530829726] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:41,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:41,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:19:41,363 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748891536] [2022-11-22 02:19:41,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:41,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:19:41,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:41,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:19:41,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:19:41,364 INFO L87 Difference]: Start difference. First operand 57 states and 76 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:41,616 INFO L93 Difference]: Finished difference Result 66 states and 84 transitions. [2022-11-22 02:19:41,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:41,616 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:41,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:41,617 INFO L225 Difference]: With dead ends: 66 [2022-11-22 02:19:41,617 INFO L226 Difference]: Without dead ends: 51 [2022-11-22 02:19:41,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:19:41,618 INFO L413 NwaCegarLoop]: 4 mSDtfsCounter, 70 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 104 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:41,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 9 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 104 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:41,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2022-11-22 02:19:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2022-11-22 02:19:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51 states, 49 states have (on average 1.4081632653061225) internal successors, (69), 50 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2022-11-22 02:19:41,620 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 21 [2022-11-22 02:19:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:41,620 INFO L495 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2022-11-22 02:19:41,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2022-11-22 02:19:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:41,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:41,621 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:41,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-22 02:19:41,621 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:41,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:41,622 INFO L85 PathProgramCache]: Analyzing trace with hash -1765118270, now seen corresponding path program 40 times [2022-11-22 02:19:41,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:41,622 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179560672] [2022-11-22 02:19:41,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:41,623 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:42,987 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:42,987 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:42,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179560672] [2022-11-22 02:19:42,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179560672] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:42,988 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:42,988 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:42,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351193234] [2022-11-22 02:19:42,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:42,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:42,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:42,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:42,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:42,989 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:43,818 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2022-11-22 02:19:43,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:43,819 INFO L225 Difference]: With dead ends: 63 [2022-11-22 02:19:43,820 INFO L226 Difference]: Without dead ends: 49 [2022-11-22 02:19:43,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:43,820 INFO L413 NwaCegarLoop]: 2 mSDtfsCounter, 26 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 4 SdHoareTripleChecker+Invalid, 378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:43,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 4 Invalid, 378 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:19:43,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2022-11-22 02:19:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2022-11-22 02:19:43,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.3829787234042554) internal successors, (65), 48 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:43,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 65 transitions. [2022-11-22 02:19:43,823 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 65 transitions. Word has length 21 [2022-11-22 02:19:43,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:43,823 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 65 transitions. [2022-11-22 02:19:43,823 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:43,823 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 65 transitions. [2022-11-22 02:19:43,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:43,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:43,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:43,824 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-22 02:19:43,824 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:43,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:43,825 INFO L85 PathProgramCache]: Analyzing trace with hash 156965964, now seen corresponding path program 41 times [2022-11-22 02:19:43,825 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:43,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [200133836] [2022-11-22 02:19:43,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:43,825 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:43,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:45,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:45,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:45,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [200133836] [2022-11-22 02:19:45,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [200133836] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:45,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:45,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:45,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483696924] [2022-11-22 02:19:45,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:45,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:45,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:45,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:45,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:45,065 INFO L87 Difference]: Start difference. First operand 49 states and 65 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:45,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:45,812 INFO L93 Difference]: Finished difference Result 56 states and 72 transitions. [2022-11-22 02:19:45,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:45,813 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:45,813 INFO L225 Difference]: With dead ends: 56 [2022-11-22 02:19:45,813 INFO L226 Difference]: Without dead ends: 56 [2022-11-22 02:19:45,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:45,814 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 25 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:45,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 0 Invalid, 360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:19:45,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2022-11-22 02:19:45,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2022-11-22 02:19:45,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 54 states have (on average 1.3333333333333333) internal successors, (72), 55 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 72 transitions. [2022-11-22 02:19:45,816 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 72 transitions. Word has length 21 [2022-11-22 02:19:45,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:45,816 INFO L495 AbstractCegarLoop]: Abstraction has 56 states and 72 transitions. [2022-11-22 02:19:45,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:45,816 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 72 transitions. [2022-11-22 02:19:45,817 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:45,817 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:45,817 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:45,817 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-22 02:19:45,817 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:45,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:45,817 INFO L85 PathProgramCache]: Analyzing trace with hash 156965944, now seen corresponding path program 5 times [2022-11-22 02:19:45,818 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:45,818 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697041756] [2022-11-22 02:19:45,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:45,818 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:45,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:46,266 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:46,266 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:46,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697041756] [2022-11-22 02:19:46,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697041756] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:46,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:46,267 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:19:46,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560037738] [2022-11-22 02:19:46,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:46,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:19:46,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:46,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:19:46,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:19:46,268 INFO L87 Difference]: Start difference. First operand 56 states and 72 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:46,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:46,485 INFO L93 Difference]: Finished difference Result 65 states and 79 transitions. [2022-11-22 02:19:46,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:46,485 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:46,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:46,486 INFO L225 Difference]: With dead ends: 65 [2022-11-22 02:19:46,486 INFO L226 Difference]: Without dead ends: 58 [2022-11-22 02:19:46,486 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:19:46,487 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 59 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 2 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:46,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 2 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:46,487 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2022-11-22 02:19:46,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 49. [2022-11-22 02:19:46,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 47 states have (on average 1.3617021276595744) internal successors, (64), 48 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:46,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 64 transitions. [2022-11-22 02:19:46,488 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 64 transitions. Word has length 21 [2022-11-22 02:19:46,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:46,488 INFO L495 AbstractCegarLoop]: Abstraction has 49 states and 64 transitions. [2022-11-22 02:19:46,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:46,489 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 64 transitions. [2022-11-22 02:19:46,489 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:46,489 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:46,489 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:46,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-22 02:19:46,490 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:46,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:46,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1417821190, now seen corresponding path program 42 times [2022-11-22 02:19:46,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:46,491 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697512725] [2022-11-22 02:19:46,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:46,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:46,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:47,616 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:47,617 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:47,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697512725] [2022-11-22 02:19:47,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697512725] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:47,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:47,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:47,617 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739054915] [2022-11-22 02:19:47,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:47,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:47,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:47,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:47,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:47,618 INFO L87 Difference]: Start difference. First operand 49 states and 64 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:48,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:48,284 INFO L93 Difference]: Finished difference Result 55 states and 69 transitions. [2022-11-22 02:19:48,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:48,284 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:48,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:48,285 INFO L225 Difference]: With dead ends: 55 [2022-11-22 02:19:48,285 INFO L226 Difference]: Without dead ends: 43 [2022-11-22 02:19:48,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=348, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:48,286 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 35 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 35 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 331 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:48,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [35 Valid, 0 Invalid, 331 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:19:48,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2022-11-22 02:19:48,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2022-11-22 02:19:48,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 41 states have (on average 1.2926829268292683) internal successors, (53), 42 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:48,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 53 transitions. [2022-11-22 02:19:48,288 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 53 transitions. Word has length 21 [2022-11-22 02:19:48,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:48,288 INFO L495 AbstractCegarLoop]: Abstraction has 43 states and 53 transitions. [2022-11-22 02:19:48,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:48,288 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 53 transitions. [2022-11-22 02:19:48,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:48,289 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:48,289 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:48,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-22 02:19:48,289 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:48,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:48,289 INFO L85 PathProgramCache]: Analyzing trace with hash -879894412, now seen corresponding path program 43 times [2022-11-22 02:19:48,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:48,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2031372142] [2022-11-22 02:19:48,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:48,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:48,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:49,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:49,500 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:49,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2031372142] [2022-11-22 02:19:49,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2031372142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:49,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:49,501 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:49,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906932036] [2022-11-22 02:19:49,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:49,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:49,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:49,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:49,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:49,502 INFO L87 Difference]: Start difference. First operand 43 states and 53 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:50,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:50,167 INFO L93 Difference]: Finished difference Result 51 states and 59 transitions. [2022-11-22 02:19:50,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:50,168 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:50,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:50,169 INFO L225 Difference]: With dead ends: 51 [2022-11-22 02:19:50,169 INFO L226 Difference]: Without dead ends: 41 [2022-11-22 02:19:50,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:50,170 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 31 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:50,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 0 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:19:50,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2022-11-22 02:19:50,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2022-11-22 02:19:50,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 39 states have (on average 1.2307692307692308) internal successors, (48), 40 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:50,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 48 transitions. [2022-11-22 02:19:50,172 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 48 transitions. Word has length 21 [2022-11-22 02:19:50,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:50,172 INFO L495 AbstractCegarLoop]: Abstraction has 41 states and 48 transitions. [2022-11-22 02:19:50,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:50,172 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 48 transitions. [2022-11-22 02:19:50,173 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:50,173 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:50,173 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:50,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-22 02:19:50,173 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:50,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:50,174 INFO L85 PathProgramCache]: Analyzing trace with hash -1346854058, now seen corresponding path program 6 times [2022-11-22 02:19:50,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:50,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194646872] [2022-11-22 02:19:50,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:50,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:50,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:50,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:50,628 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:50,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194646872] [2022-11-22 02:19:50,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1194646872] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:50,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:50,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:19:50,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168149057] [2022-11-22 02:19:50,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:50,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:19:50,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:50,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:19:50,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:19:50,629 INFO L87 Difference]: Start difference. First operand 41 states and 48 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:50,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:50,816 INFO L93 Difference]: Finished difference Result 40 states and 47 transitions. [2022-11-22 02:19:50,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-22 02:19:50,817 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:50,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:50,817 INFO L225 Difference]: With dead ends: 40 [2022-11-22 02:19:50,817 INFO L226 Difference]: Without dead ends: 29 [2022-11-22 02:19:50,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:19:50,818 INFO L413 NwaCegarLoop]: 1 mSDtfsCounter, 73 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:50,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 3 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:19:50,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2022-11-22 02:19:50,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2022-11-22 02:19:50,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 28 states have (on average 1.25) internal successors, (35), 28 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:50,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2022-11-22 02:19:50,819 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 21 [2022-11-22 02:19:50,819 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:50,819 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2022-11-22 02:19:50,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:50,819 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2022-11-22 02:19:50,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:50,820 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:50,820 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:50,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-22 02:19:50,820 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:50,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:50,821 INFO L85 PathProgramCache]: Analyzing trace with hash 2098218838, now seen corresponding path program 44 times [2022-11-22 02:19:50,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:50,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2008834604] [2022-11-22 02:19:50,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:50,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:50,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:51,976 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:51,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2008834604] [2022-11-22 02:19:51,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2008834604] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:51,977 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:51,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:51,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229416149] [2022-11-22 02:19:51,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:51,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:51,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:51,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:51,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:51,978 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:52,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:52,669 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2022-11-22 02:19:52,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:52,669 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:52,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:52,669 INFO L225 Difference]: With dead ends: 40 [2022-11-22 02:19:52,670 INFO L226 Difference]: Without dead ends: 25 [2022-11-22 02:19:52,670 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:52,670 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 33 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:52,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 0 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:19:52,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2022-11-22 02:19:52,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2022-11-22 02:19:52,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 24 states have (on average 1.125) internal successors, (27), 24 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:52,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2022-11-22 02:19:52,671 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 21 [2022-11-22 02:19:52,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:52,671 INFO L495 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2022-11-22 02:19:52,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:52,672 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2022-11-22 02:19:52,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-11-22 02:19:52,672 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:19:52,672 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:19:52,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-22 02:19:52,673 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2022-11-22 02:19:52,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:19:52,673 INFO L85 PathProgramCache]: Analyzing trace with hash 1069397782, now seen corresponding path program 45 times [2022-11-22 02:19:52,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:19:52,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121252308] [2022-11-22 02:19:52,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:19:52,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:19:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:19:53,805 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-22 02:19:53,805 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:19:53,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121252308] [2022-11-22 02:19:53,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121252308] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:19:53,805 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:19:53,805 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:19:53,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167640723] [2022-11-22 02:19:53,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:19:53,806 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-22 02:19:53,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:19:53,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-22 02:19:53,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2022-11-22 02:19:53,807 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:54,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:19:54,445 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2022-11-22 02:19:54,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:19:54,446 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-11-22 02:19:54,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:19:54,446 INFO L225 Difference]: With dead ends: 24 [2022-11-22 02:19:54,446 INFO L226 Difference]: Without dead ends: 0 [2022-11-22 02:19:54,447 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=341, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:19:54,447 INFO L413 NwaCegarLoop]: 0 mSDtfsCounter, 26 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 221 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 221 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-22 02:19:54,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 0 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 221 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-22 02:19:54,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2022-11-22 02:19:54,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2022-11-22 02:19:54,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:54,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2022-11-22 02:19:54,448 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2022-11-22 02:19:54,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:19:54,448 INFO L495 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2022-11-22 02:19:54,448 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 1.5) internal successors, (21), 14 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-22 02:19:54,448 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2022-11-22 02:19:54,448 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2022-11-22 02:19:54,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (7 of 8 remaining) [2022-11-22 02:19:54,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (6 of 8 remaining) [2022-11-22 02:19:54,451 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONERROR_FUNCTION (5 of 8 remaining) [2022-11-22 02:19:54,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONERROR_FUNCTION (4 of 8 remaining) [2022-11-22 02:19:54,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 8 remaining) [2022-11-22 02:19:54,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 8 remaining) [2022-11-22 02:19:54,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 8 remaining) [2022-11-22 02:19:54,452 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 8 remaining) [2022-11-22 02:19:54,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-22 02:19:54,455 INFO L444 BasicCegarLoop]: Path program histogram: [45, 6, 1, 1, 1, 1] [2022-11-22 02:19:54,457 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-22 02:19:54,458 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-22 02:19:54,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.11 02:19:54 BasicIcfg [2022-11-22 02:19:54,460 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-22 02:19:54,461 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-22 02:19:54,461 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-22 02:19:54,461 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-22 02:19:54,461 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:17:01" (3/4) ... [2022-11-22 02:19:54,464 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-22 02:19:54,471 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure my_callback [2022-11-22 02:19:54,476 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 26 nodes and edges [2022-11-22 02:19:54,476 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2022-11-22 02:19:54,477 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-22 02:19:54,477 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-22 02:19:54,528 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/witness.graphml [2022-11-22 02:19:54,528 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-22 02:19:54,529 INFO L158 Benchmark]: Toolchain (without parser) took 174916.47ms. Allocated memory was 165.7MB in the beginning and 541.1MB in the end (delta: 375.4MB). Free memory was 117.4MB in the beginning and 329.0MB in the end (delta: -211.6MB). Peak memory consumption was 165.9MB. Max. memory is 16.1GB. [2022-11-22 02:19:54,529 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 87.7MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-22 02:19:54,529 INFO L158 Benchmark]: CACSL2BoogieTranslator took 1311.29ms. Allocated memory is still 165.7MB. Free memory was 117.0MB in the beginning and 102.8MB in the end (delta: 14.1MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. [2022-11-22 02:19:54,530 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.28ms. Allocated memory is still 165.7MB. Free memory was 102.8MB in the beginning and 99.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:19:54,537 INFO L158 Benchmark]: Boogie Preprocessor took 44.38ms. Allocated memory is still 165.7MB. Free memory was 99.6MB in the beginning and 96.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-22 02:19:54,541 INFO L158 Benchmark]: RCFGBuilder took 793.65ms. Allocated memory is still 165.7MB. Free memory was 96.6MB in the beginning and 73.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-22 02:19:54,541 INFO L158 Benchmark]: TraceAbstraction took 172631.56ms. Allocated memory was 165.7MB in the beginning and 541.1MB in the end (delta: 375.4MB). Free memory was 72.3MB in the beginning and 333.2MB in the end (delta: -260.9MB). Peak memory consumption was 113.3MB. Max. memory is 16.1GB. [2022-11-22 02:19:54,542 INFO L158 Benchmark]: Witness Printer took 67.99ms. Allocated memory is still 541.1MB. Free memory was 333.2MB in the beginning and 329.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-22 02:19:54,544 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 121.6MB. Free memory was 87.7MB in the beginning and 87.7MB in the end (delta: 28.8kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 1311.29ms. Allocated memory is still 165.7MB. Free memory was 117.0MB in the beginning and 102.8MB in the end (delta: 14.1MB). Peak memory consumption was 37.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 59.28ms. Allocated memory is still 165.7MB. Free memory was 102.8MB in the beginning and 99.6MB in the end (delta: 3.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 44.38ms. Allocated memory is still 165.7MB. Free memory was 99.6MB in the beginning and 96.6MB in the end (delta: 3.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 793.65ms. Allocated memory is still 165.7MB. Free memory was 96.6MB in the beginning and 73.5MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * TraceAbstraction took 172631.56ms. Allocated memory was 165.7MB in the beginning and 541.1MB in the end (delta: 375.4MB). Free memory was 72.3MB in the beginning and 333.2MB in the end (delta: -260.9MB). Peak memory consumption was 113.3MB. Max. memory is 16.1GB. * Witness Printer took 67.99ms. Allocated memory is still 541.1MB. Free memory was 333.2MB in the beginning and 329.0MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 50.3s, 193 PlacesBefore, 40 PlacesAfterwards, 195 TransitionsBefore, 37 TransitionsAfterwards, 3500 CoEnabledTransitionPairs, 9 FixpointIterations, 116 TrivialSequentialCompositions, 64 ConcurrentSequentialCompositions, 14 TrivialYvCompositions, 21 ConcurrentYvCompositions, 5 ChoiceCompositions, 220 TotalNumberOfCompositions, 7400 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3810, independent: 3554, independent conditional: 0, independent unconditional: 3554, dependent: 183, dependent conditional: 0, dependent unconditional: 183, unknown: 73, unknown conditional: 0, unknown unconditional: 73] , CachedIndependenceRelation.Statistics on underlying relation: UnionIndependenceRelation.Independence Queries: [ total: 2428, independent: 2371, independent conditional: 0, independent unconditional: 2371, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , UnionIndependenceRelation.Statistics on underlying relations: [ SyntacticIndependenceRelation.Independence Queries: [ total: 2428, independent: 2366, independent conditional: 0, independent unconditional: 2366, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , SemanticIndependenceRelation.Independence Queries: [ total: 62, independent: 5, independent conditional: 0, independent unconditional: 5, dependent: 43, dependent conditional: 0, dependent unconditional: 43, unknown: 14, unknown conditional: 0, unknown unconditional: 14] , SemanticIndependenceRelation.Query Time [ms]: [ total: 31612, independent: 78, independent conditional: 0, independent unconditional: 78, dependent: 2019, dependent conditional: 0, dependent unconditional: 2019, unknown: 29515, unknown conditional: 0, unknown unconditional: 29515] ], Cache Queries: [ total: 3810, independent: 1183, independent conditional: 0, independent unconditional: 1183, dependent: 140, dependent conditional: 0, dependent unconditional: 140, unknown: 2487, unknown conditional: 0, unknown unconditional: 2487] , Statistics on independence cache: Total cache size (in pairs): 119, Positive cache size: 103, Positive conditional cache size: 0, Positive unconditional cache size: 103, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 10, Unknown conditional cache size: 0, Unknown unconditional cache size: 10 - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 1693]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 4 procedures, 204 locations, 8 error locations. Started 1 CEGAR loops. OverallTime: 172.4s, OverallIterations: 55, TraceHistogramMax: 1, PathProgramHistogramMax: 45, EmptinessCheckTime: 0.1s, AutomataDifference: 49.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 50.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2386 SdHoareTripleChecker+Valid, 29.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2386 mSDsluCounter, 188 SdHoareTripleChecker+Invalid, 26.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 85 mSDsCounter, 1071 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 24228 IncrementalHoareTripleChecker+Invalid, 25299 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1071 mSolverCounterUnsat, 103 mSDtfsCounter, 24228 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1046 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 926 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2057 ImplicationChecksByTransitivity, 34.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=463occurred in iteration=3, InterpolantAutomatonStates: 629, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.3s AutomataMinimizationTime, 55 MinimizatonAttempts, 1227 StatesRemovedByMinimization, 38 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 1.6s SatisfiabilityAnalysisTime, 68.6s InterpolantComputationTime, 1092 NumberOfCodeBlocks, 1092 NumberOfCodeBlocksAsserted, 55 NumberOfCheckSat, 1037 ConstructedInterpolants, 0 QuantifiedInterpolants, 27596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 55 InterpolantComputations, 55 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 6 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-22 02:19:54,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0c269754-7f14-4963-aaa2-6a40f36f5ab2/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE