./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/systemc/transmitter.13.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/systemc/transmitter.13.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh --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 5975f0f3825b3a6653676f33bd69d14e1e58fcf0306bfb5508ab91dc8951d6c4 --- 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-2329fc7 [2022-12-14 05:44:17,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:44:17,101 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:44:17,116 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:44:17,117 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:44:17,118 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:44:17,118 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:44:17,120 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:44:17,121 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:44:17,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:44:17,122 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:44:17,123 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:44:17,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:44:17,124 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:44:17,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:44:17,125 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:44:17,126 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:44:17,127 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:44:17,128 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:44:17,129 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:44:17,130 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:44:17,131 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:44:17,132 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:44:17,133 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:44:17,135 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:44:17,135 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:44:17,135 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:44:17,136 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:44:17,136 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:44:17,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:44:17,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:44:17,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:44:17,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:44:17,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:44:17,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:44:17,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:44:17,140 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:44:17,140 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:44:17,140 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:44:17,141 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:44:17,141 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:44:17,142 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:44:17,157 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:44:17,157 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:44:17,157 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:44:17,157 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:44:17,158 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:44:17,158 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:44:17,158 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:44:17,158 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:44:17,158 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:44:17,158 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:44:17,159 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:44:17,159 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:44:17,159 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:44:17,159 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:44:17,159 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:44:17,159 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:44:17,159 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:44:17,159 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:44:17,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:44:17,160 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:44:17,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:44:17,160 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:44:17,160 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:44:17,161 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:44:17,161 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:44:17,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:44:17,162 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:44:17,162 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:44:17,162 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:44:17,162 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:44:17,162 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:44:17,162 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:44:17,162 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:44:17,163 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:44:17,163 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_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5975f0f3825b3a6653676f33bd69d14e1e58fcf0306bfb5508ab91dc8951d6c4 [2022-12-14 05:44:17,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:44:17,341 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:44:17,344 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:44:17,345 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:44:17,345 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:44:17,347 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/systemc/transmitter.13.cil.c [2022-12-14 05:44:19,950 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:44:20,130 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:44:20,131 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/sv-benchmarks/c/systemc/transmitter.13.cil.c [2022-12-14 05:44:20,140 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/data/c942f9d3d/d1f519183b30425fa20fe77d65fadce8/FLAG8920efd24 [2022-12-14 05:44:20,150 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/data/c942f9d3d/d1f519183b30425fa20fe77d65fadce8 [2022-12-14 05:44:20,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:44:20,153 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:44:20,154 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:44:20,154 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:44:20,157 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:44:20,157 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,158 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@459a1e6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20, skipping insertion in model container [2022-12-14 05:44:20,158 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,164 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:44:20,199 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:44:20,300 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_8e206d5f-d21d-4150-81b8-026143a8af30/sv-benchmarks/c/systemc/transmitter.13.cil.c[706,719] [2022-12-14 05:44:20,386 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:44:20,396 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:44:20,404 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_8e206d5f-d21d-4150-81b8-026143a8af30/sv-benchmarks/c/systemc/transmitter.13.cil.c[706,719] [2022-12-14 05:44:20,452 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:44:20,466 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:44:20,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20 WrapperNode [2022-12-14 05:44:20,467 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:44:20,467 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:44:20,468 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:44:20,468 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:44:20,473 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,482 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,514 INFO L138 Inliner]: procedures = 54, calls = 69, calls flagged for inlining = 38, calls inlined = 38, statements flattened = 891 [2022-12-14 05:44:20,514 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:44:20,515 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:44:20,515 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:44:20,515 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:44:20,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,523 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,525 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,525 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,534 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,545 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,547 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,551 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:44:20,551 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:44:20,551 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:44:20,551 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:44:20,552 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (1/1) ... [2022-12-14 05:44:20,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:44:20,567 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:44:20,577 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:44:20,579 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8e206d5f-d21d-4150-81b8-026143a8af30/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:44:20,612 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:44:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-12-14 05:44:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-12-14 05:44:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-14 05:44:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-14 05:44:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-12-14 05:44:20,613 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-12-14 05:44:20,613 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-12-14 05:44:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-12-14 05:44:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-12-14 05:44:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-12-14 05:44:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-12-14 05:44:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-12-14 05:44:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:44:20,614 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:44:20,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:44:20,712 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:44:20,714 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:44:21,329 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:44:21,627 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:44:21,628 INFO L300 CfgBuilder]: Removed 17 assume(true) statements. [2022-12-14 05:44:21,630 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:44:21 BoogieIcfgContainer [2022-12-14 05:44:21,630 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:44:21,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:44:21,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:44:21,634 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:44:21,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:44:20" (1/3) ... [2022-12-14 05:44:21,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb70a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:44:21, skipping insertion in model container [2022-12-14 05:44:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:44:20" (2/3) ... [2022-12-14 05:44:21,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb70a69 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:44:21, skipping insertion in model container [2022-12-14 05:44:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:44:21" (3/3) ... [2022-12-14 05:44:21,636 INFO L112 eAbstractionObserver]: Analyzing ICFG transmitter.13.cil.c [2022-12-14 05:44:21,650 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:44:21,651 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:44:21,689 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:44:21,694 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;@283a5f5f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:44:21,694 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:44:21,699 INFO L276 IsEmpty]: Start isEmpty. Operand has 197 states, 163 states have (on average 1.5644171779141105) internal successors, (255), 165 states have internal predecessors, (255), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) [2022-12-14 05:44:21,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:21,708 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:21,709 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:21,709 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:21,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:21,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1028350994, now seen corresponding path program 1 times [2022-12-14 05:44:21,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:21,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212295984] [2022-12-14 05:44:21,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:21,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:21,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:22,036 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:22,037 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:22,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212295984] [2022-12-14 05:44:22,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212295984] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:22,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:22,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:44:22,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1048296470] [2022-12-14 05:44:22,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:22,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:44:22,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:22,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:44:22,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:44:22,066 INFO L87 Difference]: Start difference. First operand has 197 states, 163 states have (on average 1.5644171779141105) internal successors, (255), 165 states have internal predecessors, (255), 26 states have call successors, (26), 6 states have call predecessors, (26), 6 states have return successors, (26), 26 states have call predecessors, (26), 26 states have call successors, (26) Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:22,442 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:22,442 INFO L93 Difference]: Finished difference Result 574 states and 925 transitions. [2022-12-14 05:44:22,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:44:22,445 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:22,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:22,455 INFO L225 Difference]: With dead ends: 574 [2022-12-14 05:44:22,456 INFO L226 Difference]: Without dead ends: 378 [2022-12-14 05:44:22,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:44:22,464 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 532 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 306 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 532 SdHoareTripleChecker+Valid, 854 SdHoareTripleChecker+Invalid, 320 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:22,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [532 Valid, 854 Invalid, 320 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 306 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:44:22,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2022-12-14 05:44:22,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 375. [2022-12-14 05:44:22,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 375 states, 315 states have (on average 1.5238095238095237) internal successors, (480), 316 states have internal predecessors, (480), 47 states have call successors, (47), 12 states have call predecessors, (47), 12 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-12-14 05:44:22,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 375 states to 375 states and 574 transitions. [2022-12-14 05:44:22,520 INFO L78 Accepts]: Start accepts. Automaton has 375 states and 574 transitions. Word has length 81 [2022-12-14 05:44:22,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:22,520 INFO L495 AbstractCegarLoop]: Abstraction has 375 states and 574 transitions. [2022-12-14 05:44:22,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:22,521 INFO L276 IsEmpty]: Start isEmpty. Operand 375 states and 574 transitions. [2022-12-14 05:44:22,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:22,523 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:22,523 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:22,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:44:22,523 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:22,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1311295087, now seen corresponding path program 1 times [2022-12-14 05:44:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:22,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [44115352] [2022-12-14 05:44:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:22,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:22,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:22,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:22,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [44115352] [2022-12-14 05:44:22,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [44115352] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:22,663 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:22,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:44:22,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033627225] [2022-12-14 05:44:22,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:22,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:44:22,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:22,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:44:22,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:44:22,666 INFO L87 Difference]: Start difference. First operand 375 states and 574 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:23,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:23,263 INFO L93 Difference]: Finished difference Result 1287 states and 1995 transitions. [2022-12-14 05:44:23,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:44:23,264 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:23,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:23,270 INFO L225 Difference]: With dead ends: 1287 [2022-12-14 05:44:23,270 INFO L226 Difference]: Without dead ends: 890 [2022-12-14 05:44:23,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:44:23,274 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 1136 mSDsluCounter, 855 mSDsCounter, 0 mSdLazyCounter, 505 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1362 SdHoareTripleChecker+Invalid, 715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:23,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1362 Invalid, 715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 505 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-14 05:44:23,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-12-14 05:44:23,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 878. [2022-12-14 05:44:23,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 878 states, 757 states have (on average 1.513870541611625) internal successors, (1146), 746 states have internal predecessors, (1146), 92 states have call successors, (92), 26 states have call predecessors, (92), 28 states have return successors, (106), 106 states have call predecessors, (106), 92 states have call successors, (106) [2022-12-14 05:44:23,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 878 states to 878 states and 1344 transitions. [2022-12-14 05:44:23,334 INFO L78 Accepts]: Start accepts. Automaton has 878 states and 1344 transitions. Word has length 81 [2022-12-14 05:44:23,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:23,334 INFO L495 AbstractCegarLoop]: Abstraction has 878 states and 1344 transitions. [2022-12-14 05:44:23,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:23,335 INFO L276 IsEmpty]: Start isEmpty. Operand 878 states and 1344 transitions. [2022-12-14 05:44:23,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:23,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:23,338 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:23,338 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:44:23,338 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:23,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:23,338 INFO L85 PathProgramCache]: Analyzing trace with hash 1688937904, now seen corresponding path program 1 times [2022-12-14 05:44:23,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:23,339 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397670100] [2022-12-14 05:44:23,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:23,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:23,526 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:23,526 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:23,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397670100] [2022-12-14 05:44:23,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397670100] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:23,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:23,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:44:23,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833073552] [2022-12-14 05:44:23,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:23,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:44:23,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:23,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:44:23,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:44:23,529 INFO L87 Difference]: Start difference. First operand 878 states and 1344 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:24,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:24,055 INFO L93 Difference]: Finished difference Result 3089 states and 4796 transitions. [2022-12-14 05:44:24,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:44:24,056 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:24,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:24,067 INFO L225 Difference]: With dead ends: 3089 [2022-12-14 05:44:24,067 INFO L226 Difference]: Without dead ends: 2165 [2022-12-14 05:44:24,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:44:24,073 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1136 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:24,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1124 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:44:24,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2165 states. [2022-12-14 05:44:24,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2165 to 1681. [2022-12-14 05:44:24,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1681 states, 1452 states have (on average 1.5151515151515151) internal successors, (2200), 1442 states have internal predecessors, (2200), 172 states have call successors, (172), 50 states have call predecessors, (172), 56 states have return successors, (213), 189 states have call predecessors, (213), 172 states have call successors, (213) [2022-12-14 05:44:24,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1681 states to 1681 states and 2585 transitions. [2022-12-14 05:44:24,164 INFO L78 Accepts]: Start accepts. Automaton has 1681 states and 2585 transitions. Word has length 81 [2022-12-14 05:44:24,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:24,164 INFO L495 AbstractCegarLoop]: Abstraction has 1681 states and 2585 transitions. [2022-12-14 05:44:24,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:24,164 INFO L276 IsEmpty]: Start isEmpty. Operand 1681 states and 2585 transitions. [2022-12-14 05:44:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:24,166 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:24,166 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:24,166 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:44:24,167 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash -786303473, now seen corresponding path program 1 times [2022-12-14 05:44:24,167 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:24,167 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498684015] [2022-12-14 05:44:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:24,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:24,260 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:24,260 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498684015] [2022-12-14 05:44:24,261 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498684015] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:24,261 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:24,261 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:44:24,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338316414] [2022-12-14 05:44:24,261 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:24,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:44:24,262 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:24,262 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:44:24,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:44:24,263 INFO L87 Difference]: Start difference. First operand 1681 states and 2585 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:24,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:24,860 INFO L93 Difference]: Finished difference Result 5846 states and 9147 transitions. [2022-12-14 05:44:24,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:44:24,861 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:24,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:24,878 INFO L225 Difference]: With dead ends: 5846 [2022-12-14 05:44:24,879 INFO L226 Difference]: Without dead ends: 4072 [2022-12-14 05:44:24,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:44:24,885 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1136 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:24,885 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1124 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:44:24,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4072 states. [2022-12-14 05:44:24,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4072 to 3261. [2022-12-14 05:44:25,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3261 states, 2820 states have (on average 1.5148936170212766) internal successors, (4272), 2814 states have internal predecessors, (4272), 328 states have call successors, (328), 98 states have call predecessors, (328), 112 states have return successors, (421), 349 states have call predecessors, (421), 328 states have call successors, (421) [2022-12-14 05:44:25,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3261 states to 3261 states and 5021 transitions. [2022-12-14 05:44:25,011 INFO L78 Accepts]: Start accepts. Automaton has 3261 states and 5021 transitions. Word has length 81 [2022-12-14 05:44:25,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:25,011 INFO L495 AbstractCegarLoop]: Abstraction has 3261 states and 5021 transitions. [2022-12-14 05:44:25,011 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:25,012 INFO L276 IsEmpty]: Start isEmpty. Operand 3261 states and 5021 transitions. [2022-12-14 05:44:25,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:25,013 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:25,013 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:25,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:44:25,013 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:25,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:25,014 INFO L85 PathProgramCache]: Analyzing trace with hash -778552914, now seen corresponding path program 1 times [2022-12-14 05:44:25,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:25,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522753974] [2022-12-14 05:44:25,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:25,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:25,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:25,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:25,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:25,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522753974] [2022-12-14 05:44:25,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522753974] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:25,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:25,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:44:25,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068231232] [2022-12-14 05:44:25,082 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:25,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:44:25,083 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:25,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:44:25,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:44:25,084 INFO L87 Difference]: Start difference. First operand 3261 states and 5021 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:25,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:25,551 INFO L93 Difference]: Finished difference Result 9716 states and 15238 transitions. [2022-12-14 05:44:25,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:44:25,551 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:25,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:25,584 INFO L225 Difference]: With dead ends: 9716 [2022-12-14 05:44:25,584 INFO L226 Difference]: Without dead ends: 6460 [2022-12-14 05:44:25,598 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:44:25,599 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 553 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 553 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:25,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [553 Valid, 852 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:44:25,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6460 states. [2022-12-14 05:44:25,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6460 to 6440. [2022-12-14 05:44:25,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6440 states, 5579 states have (on average 1.5063631475174764) internal successors, (8404), 5567 states have internal predecessors, (8404), 636 states have call successors, (636), 196 states have call predecessors, (636), 224 states have return successors, (815), 677 states have call predecessors, (815), 636 states have call successors, (815) [2022-12-14 05:44:25,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6440 states to 6440 states and 9855 transitions. [2022-12-14 05:44:25,853 INFO L78 Accepts]: Start accepts. Automaton has 6440 states and 9855 transitions. Word has length 81 [2022-12-14 05:44:25,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:25,854 INFO L495 AbstractCegarLoop]: Abstraction has 6440 states and 9855 transitions. [2022-12-14 05:44:25,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:25,854 INFO L276 IsEmpty]: Start isEmpty. Operand 6440 states and 9855 transitions. [2022-12-14 05:44:25,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:25,856 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:25,856 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:25,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 05:44:25,856 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:25,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:25,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1786077325, now seen corresponding path program 1 times [2022-12-14 05:44:25,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:25,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181859368] [2022-12-14 05:44:25,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:25,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:25,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:25,937 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:25,937 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:25,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181859368] [2022-12-14 05:44:25,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181859368] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:25,937 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:25,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:44:25,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1647991933] [2022-12-14 05:44:25,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:25,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:44:25,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:25,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:44:25,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:44:25,939 INFO L87 Difference]: Start difference. First operand 6440 states and 9855 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:27,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:27,023 INFO L93 Difference]: Finished difference Result 21898 states and 34178 transitions. [2022-12-14 05:44:27,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:44:27,024 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:27,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:27,101 INFO L225 Difference]: With dead ends: 21898 [2022-12-14 05:44:27,102 INFO L226 Difference]: Without dead ends: 15091 [2022-12-14 05:44:27,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:44:27,126 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1136 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:27,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1124 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:44:27,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15091 states. [2022-12-14 05:44:27,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15091 to 12593. [2022-12-14 05:44:27,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12593 states, 10916 states have (on average 1.5044888237449616) internal successors, (16423), 10920 states have internal predecessors, (16423), 1228 states have call successors, (1228), 388 states have call predecessors, (1228), 448 states have return successors, (1599), 1285 states have call predecessors, (1599), 1228 states have call successors, (1599) [2022-12-14 05:44:27,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12593 states to 12593 states and 19250 transitions. [2022-12-14 05:44:27,684 INFO L78 Accepts]: Start accepts. Automaton has 12593 states and 19250 transitions. Word has length 81 [2022-12-14 05:44:27,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:27,685 INFO L495 AbstractCegarLoop]: Abstraction has 12593 states and 19250 transitions. [2022-12-14 05:44:27,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:27,685 INFO L276 IsEmpty]: Start isEmpty. Operand 12593 states and 19250 transitions. [2022-12-14 05:44:27,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:27,686 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:27,686 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:27,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-14 05:44:27,687 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:27,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:27,687 INFO L85 PathProgramCache]: Analyzing trace with hash 510974636, now seen corresponding path program 1 times [2022-12-14 05:44:27,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:27,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27013212] [2022-12-14 05:44:27,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:27,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:27,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:27,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:27,764 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:27,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27013212] [2022-12-14 05:44:27,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27013212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:27,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:27,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:44:27,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914823856] [2022-12-14 05:44:27,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:27,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:44:27,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:27,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:44:27,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:44:27,766 INFO L87 Difference]: Start difference. First operand 12593 states and 19250 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:29,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:29,318 INFO L93 Difference]: Finished difference Result 42245 states and 65931 transitions. [2022-12-14 05:44:29,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:44:29,318 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:29,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:29,399 INFO L225 Difference]: With dead ends: 42245 [2022-12-14 05:44:29,399 INFO L226 Difference]: Without dead ends: 28933 [2022-12-14 05:44:29,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:44:29,432 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1136 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 449 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1124 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 449 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:29,433 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1124 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 449 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:44:29,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28933 states. [2022-12-14 05:44:30,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28933 to 24755. [2022-12-14 05:44:30,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24755 states, 21478 states have (on average 1.5020486078778286) internal successors, (32261), 21514 states have internal predecessors, (32261), 2380 states have call successors, (2380), 772 states have call predecessors, (2380), 896 states have return successors, (3119), 2469 states have call predecessors, (3119), 2380 states have call successors, (3119) [2022-12-14 05:44:30,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24755 states to 24755 states and 37760 transitions. [2022-12-14 05:44:30,585 INFO L78 Accepts]: Start accepts. Automaton has 24755 states and 37760 transitions. Word has length 81 [2022-12-14 05:44:30,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:30,586 INFO L495 AbstractCegarLoop]: Abstraction has 24755 states and 37760 transitions. [2022-12-14 05:44:30,586 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:30,586 INFO L276 IsEmpty]: Start isEmpty. Operand 24755 states and 37760 transitions. [2022-12-14 05:44:30,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:30,588 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:30,588 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:30,588 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 05:44:30,588 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:30,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:30,589 INFO L85 PathProgramCache]: Analyzing trace with hash 1034295307, now seen corresponding path program 1 times [2022-12-14 05:44:30,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:30,589 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980887290] [2022-12-14 05:44:30,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:30,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:30,662 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:30,662 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:30,662 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980887290] [2022-12-14 05:44:30,662 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980887290] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:30,662 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:30,663 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:44:30,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389221179] [2022-12-14 05:44:30,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:30,663 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:44:30,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:30,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:44:30,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:44:30,665 INFO L87 Difference]: Start difference. First operand 24755 states and 37760 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:32,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:32,367 INFO L93 Difference]: Finished difference Result 73806 states and 114584 transitions. [2022-12-14 05:44:32,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-14 05:44:32,367 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:32,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:32,485 INFO L225 Difference]: With dead ends: 73806 [2022-12-14 05:44:32,485 INFO L226 Difference]: Without dead ends: 49056 [2022-12-14 05:44:32,534 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:44:32,534 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 568 mSDsluCounter, 379 mSDsCounter, 0 mSdLazyCounter, 308 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 568 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:32,535 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [568 Valid, 852 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 308 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:44:32,570 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49056 states. [2022-12-14 05:44:34,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49056 to 48922. [2022-12-14 05:44:34,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48922 states, 42501 states have (on average 1.4924119432483942) internal successors, (63429), 42574 states have internal predecessors, (63429), 4628 states have call successors, (4628), 1544 states have call predecessors, (4628), 1792 states have return successors, (6044), 4804 states have call predecessors, (6044), 4628 states have call successors, (6044) [2022-12-14 05:44:34,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48922 states to 48922 states and 74101 transitions. [2022-12-14 05:44:34,661 INFO L78 Accepts]: Start accepts. Automaton has 48922 states and 74101 transitions. Word has length 81 [2022-12-14 05:44:34,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:34,662 INFO L495 AbstractCegarLoop]: Abstraction has 48922 states and 74101 transitions. [2022-12-14 05:44:34,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 2 states have call successors, (5), 1 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:34,662 INFO L276 IsEmpty]: Start isEmpty. Operand 48922 states and 74101 transitions. [2022-12-14 05:44:34,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-12-14 05:44:34,663 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:34,663 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:34,663 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:44:34,663 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:34,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:34,664 INFO L85 PathProgramCache]: Analyzing trace with hash 2085744396, now seen corresponding path program 1 times [2022-12-14 05:44:34,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:34,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1526010033] [2022-12-14 05:44:34,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:34,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:34,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:34,843 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:34,843 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:34,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1526010033] [2022-12-14 05:44:34,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1526010033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:34,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:34,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:44:34,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399636707] [2022-12-14 05:44:34,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:34,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:44:34,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:34,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:44:34,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:44:34,845 INFO L87 Difference]: Start difference. First operand 48922 states and 74101 transitions. Second operand has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:38,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:38,712 INFO L93 Difference]: Finished difference Result 155682 states and 235699 transitions. [2022-12-14 05:44:38,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:44:38,713 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 81 [2022-12-14 05:44:38,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:39,176 INFO L225 Difference]: With dead ends: 155682 [2022-12-14 05:44:39,177 INFO L226 Difference]: Without dead ends: 106766 [2022-12-14 05:44:39,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:44:39,298 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 1169 mSDsluCounter, 498 mSDsCounter, 0 mSdLazyCounter, 301 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1176 SdHoareTripleChecker+Valid, 764 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:39,298 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1176 Valid, 764 Invalid, 458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 301 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:44:39,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106766 states. [2022-12-14 05:44:42,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106766 to 83040. [2022-12-14 05:44:42,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83040 states, 72955 states have (on average 1.4780481118497704) internal successors, (107831), 73100 states have internal predecessors, (107831), 7012 states have call successors, (7012), 2576 states have call predecessors, (7012), 3072 states have return successors, (9844), 7364 states have call predecessors, (9844), 7012 states have call successors, (9844) [2022-12-14 05:44:42,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83040 states to 83040 states and 124687 transitions. [2022-12-14 05:44:42,891 INFO L78 Accepts]: Start accepts. Automaton has 83040 states and 124687 transitions. Word has length 81 [2022-12-14 05:44:42,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:44:42,891 INFO L495 AbstractCegarLoop]: Abstraction has 83040 states and 124687 transitions. [2022-12-14 05:44:42,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.833333333333334) internal successors, (71), 6 states have internal predecessors, (71), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:42,892 INFO L276 IsEmpty]: Start isEmpty. Operand 83040 states and 124687 transitions. [2022-12-14 05:44:42,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-12-14 05:44:42,893 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:44:42,893 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:44:42,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-14 05:44:42,893 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:44:42,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:44:42,894 INFO L85 PathProgramCache]: Analyzing trace with hash -2080736556, now seen corresponding path program 1 times [2022-12-14 05:44:42,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:44:42,894 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200921597] [2022-12-14 05:44:42,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:44:42,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:44:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:44:43,059 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:44:43,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:44:43,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200921597] [2022-12-14 05:44:43,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1200921597] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:44:43,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:44:43,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:44:43,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [987997211] [2022-12-14 05:44:43,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:44:43,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:44:43,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:44:43,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:44:43,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:44:43,060 INFO L87 Difference]: Start difference. First operand 83040 states and 124687 transitions. Second operand has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:44:52,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:44:52,129 INFO L93 Difference]: Finished difference Result 316484 states and 474642 transitions. [2022-12-14 05:44:52,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:44:52,130 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 82 [2022-12-14 05:44:52,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:44:52,816 INFO L225 Difference]: With dead ends: 316484 [2022-12-14 05:44:52,816 INFO L226 Difference]: Without dead ends: 233450 [2022-12-14 05:44:52,984 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:44:52,985 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 1229 mSDsluCounter, 473 mSDsCounter, 0 mSdLazyCounter, 299 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1250 SdHoareTripleChecker+Valid, 726 SdHoareTripleChecker+Invalid, 455 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 299 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:44:52,985 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1250 Valid, 726 Invalid, 455 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 299 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:44:53,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233450 states. [2022-12-14 05:45:00,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233450 to 163728. [2022-12-14 05:45:00,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163728 states, 143947 states have (on average 1.4737299144824136) internal successors, (212139), 144244 states have internal predecessors, (212139), 13636 states have call successors, (13636), 5152 states have call predecessors, (13636), 6144 states have return successors, (19052), 14332 states have call predecessors, (19052), 13636 states have call successors, (19052) [2022-12-14 05:45:01,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163728 states to 163728 states and 244827 transitions. [2022-12-14 05:45:01,041 INFO L78 Accepts]: Start accepts. Automaton has 163728 states and 244827 transitions. Word has length 82 [2022-12-14 05:45:01,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:01,042 INFO L495 AbstractCegarLoop]: Abstraction has 163728 states and 244827 transitions. [2022-12-14 05:45:01,042 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.0) internal successors, (72), 6 states have internal predecessors, (72), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:45:01,042 INFO L276 IsEmpty]: Start isEmpty. Operand 163728 states and 244827 transitions. [2022-12-14 05:45:01,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-12-14 05:45:01,044 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:01,044 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:45:01,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-14 05:45:01,044 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:45:01,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:01,045 INFO L85 PathProgramCache]: Analyzing trace with hash -665553323, now seen corresponding path program 1 times [2022-12-14 05:45:01,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:01,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203830232] [2022-12-14 05:45:01,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:01,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:01,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:01,189 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:01,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:01,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203830232] [2022-12-14 05:45:01,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203830232] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:01,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:45:01,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:45:01,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223101630] [2022-12-14 05:45:01,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:01,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:45:01,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:01,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:45:01,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:45:01,191 INFO L87 Difference]: Start difference. First operand 163728 states and 244827 transitions. Second operand has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:45:15,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:15,103 INFO L93 Difference]: Finished difference Result 480900 states and 719733 transitions. [2022-12-14 05:45:15,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:45:15,104 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 83 [2022-12-14 05:45:15,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:16,024 INFO L225 Difference]: With dead ends: 480900 [2022-12-14 05:45:16,024 INFO L226 Difference]: Without dead ends: 317178 [2022-12-14 05:45:16,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:45:16,301 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 1066 mSDsluCounter, 546 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 805 SdHoareTripleChecker+Invalid, 469 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:16,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 805 Invalid, 469 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:45:16,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317178 states. [2022-12-14 05:45:28,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317178 to 243016. [2022-12-14 05:45:28,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 243016 states, 213507 states have (on average 1.470092315474434) internal successors, (313875), 213860 states have internal predecessors, (313875), 20292 states have call successors, (20292), 7744 states have call predecessors, (20292), 9216 states have return successors, (28196), 21412 states have call predecessors, (28196), 20292 states have call successors, (28196) [2022-12-14 05:45:29,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 243016 states to 243016 states and 362363 transitions. [2022-12-14 05:45:29,118 INFO L78 Accepts]: Start accepts. Automaton has 243016 states and 362363 transitions. Word has length 83 [2022-12-14 05:45:29,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:45:29,118 INFO L495 AbstractCegarLoop]: Abstraction has 243016 states and 362363 transitions. [2022-12-14 05:45:29,118 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.166666666666666) internal successors, (73), 6 states have internal predecessors, (73), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:45:29,118 INFO L276 IsEmpty]: Start isEmpty. Operand 243016 states and 362363 transitions. [2022-12-14 05:45:29,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-12-14 05:45:29,121 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:45:29,121 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:45:29,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-14 05:45:29,121 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:45:29,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:45:29,121 INFO L85 PathProgramCache]: Analyzing trace with hash -858721288, now seen corresponding path program 1 times [2022-12-14 05:45:29,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:45:29,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954459133] [2022-12-14 05:45:29,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:45:29,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:45:29,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:45:29,272 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:45:29,272 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:45:29,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954459133] [2022-12-14 05:45:29,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954459133] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:45:29,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:45:29,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:45:29,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055672598] [2022-12-14 05:45:29,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:45:29,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:45:29,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:45:29,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:45:29,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:45:29,274 INFO L87 Difference]: Start difference. First operand 243016 states and 362363 transitions. Second operand has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:45:52,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:45:52,043 INFO L93 Difference]: Finished difference Result 705452 states and 1053789 transitions. [2022-12-14 05:45:52,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:45:52,043 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 84 [2022-12-14 05:45:52,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:45:53,676 INFO L225 Difference]: With dead ends: 705452 [2022-12-14 05:45:53,676 INFO L226 Difference]: Without dead ends: 462442 [2022-12-14 05:45:54,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:45:54,158 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 983 mSDsluCounter, 721 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 989 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:45:54,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [989 Valid, 980 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:45:54,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462442 states. [2022-12-14 05:46:13,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462442 to 361096. [2022-12-14 05:46:13,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361096 states, 317059 states have (on average 1.4663863823452417) internal successors, (464931), 317412 states have internal predecessors, (464931), 30212 states have call successors, (30212), 11648 states have call predecessors, (30212), 13824 states have return successors, (41700), 32036 states have call predecessors, (41700), 30212 states have call successors, (41700) [2022-12-14 05:46:14,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361096 states to 361096 states and 536843 transitions. [2022-12-14 05:46:15,014 INFO L78 Accepts]: Start accepts. Automaton has 361096 states and 536843 transitions. Word has length 84 [2022-12-14 05:46:15,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:46:15,015 INFO L495 AbstractCegarLoop]: Abstraction has 361096 states and 536843 transitions. [2022-12-14 05:46:15,015 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.333333333333334) internal successors, (74), 6 states have internal predecessors, (74), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:46:15,015 INFO L276 IsEmpty]: Start isEmpty. Operand 361096 states and 536843 transitions. [2022-12-14 05:46:15,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-12-14 05:46:15,017 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:46:15,017 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:46:15,018 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-14 05:46:15,018 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:46:15,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:46:15,018 INFO L85 PathProgramCache]: Analyzing trace with hash 2122707249, now seen corresponding path program 1 times [2022-12-14 05:46:15,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:46:15,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16097688] [2022-12-14 05:46:15,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:46:15,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:46:15,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:46:15,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:46:15,163 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:46:15,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16097688] [2022-12-14 05:46:15,164 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16097688] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:46:15,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:46:15,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:46:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [772655804] [2022-12-14 05:46:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:46:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:46:15,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:46:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:46:15,165 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:46:15,165 INFO L87 Difference]: Start difference. First operand 361096 states and 536843 transitions. Second operand has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:47:07,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:47:07,911 INFO L93 Difference]: Finished difference Result 1314700 states and 1957806 transitions. [2022-12-14 05:47:07,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:47:07,912 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 85 [2022-12-14 05:47:07,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:47:11,520 INFO L225 Difference]: With dead ends: 1314700 [2022-12-14 05:47:11,520 INFO L226 Difference]: Without dead ends: 953610 [2022-12-14 05:47:12,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:47:12,465 INFO L413 NwaCegarLoop]: 249 mSDtfsCounter, 1069 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 376 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1090 SdHoareTripleChecker+Valid, 827 SdHoareTripleChecker+Invalid, 536 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 376 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-14 05:47:12,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1090 Valid, 827 Invalid, 536 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 376 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-14 05:47:13,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 953610 states. [2022-12-14 05:47:56,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 953610 to 711496. [2022-12-14 05:47:57,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 711496 states, 625155 states have (on average 1.4617094960449808) internal successors, (913795), 625924 states have internal predecessors, (913795), 58692 states have call successors, (58692), 23296 states have call predecessors, (58692), 27648 states have return successors, (80580), 62276 states have call predecessors, (80580), 58692 states have call successors, (80580) [2022-12-14 05:48:00,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 711496 states to 711496 states and 1053067 transitions. [2022-12-14 05:48:00,258 INFO L78 Accepts]: Start accepts. Automaton has 711496 states and 1053067 transitions. Word has length 85 [2022-12-14 05:48:00,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:48:00,258 INFO L495 AbstractCegarLoop]: Abstraction has 711496 states and 1053067 transitions. [2022-12-14 05:48:00,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 12.5) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:48:00,258 INFO L276 IsEmpty]: Start isEmpty. Operand 711496 states and 1053067 transitions. [2022-12-14 05:48:00,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-12-14 05:48:00,263 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:48:00,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:48:00,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 05:48:00,264 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:48:00,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:48:00,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1316885788, now seen corresponding path program 1 times [2022-12-14 05:48:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:48:00,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465393444] [2022-12-14 05:48:00,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:48:00,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:48:00,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:48:00,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-14 05:48:00,560 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:48:00,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465393444] [2022-12-14 05:48:00,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465393444] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:48:00,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:48:00,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:48:00,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501579557] [2022-12-14 05:48:00,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:48:00,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:48:00,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:48:00,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:48:00,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:48:00,561 INFO L87 Difference]: Start difference. First operand 711496 states and 1053067 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-12-14 05:49:24,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:49:24,076 INFO L93 Difference]: Finished difference Result 2018316 states and 2995405 transitions. [2022-12-14 05:49:24,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-14 05:49:24,077 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 6 states have internal predecessors, (76), 2 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 86 [2022-12-14 05:49:24,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:49:29,167 INFO L225 Difference]: With dead ends: 2018316 [2022-12-14 05:49:29,167 INFO L226 Difference]: Without dead ends: 1306826 [2022-12-14 05:49:31,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2022-12-14 05:49:31,024 INFO L413 NwaCegarLoop]: 259 mSDtfsCounter, 949 mSDsluCounter, 691 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 955 SdHoareTripleChecker+Valid, 950 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:49:31,024 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [955 Valid, 950 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [158 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:49:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306826 states. [2022-12-14 05:50:45,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306826 to 1059528. [2022-12-14 05:50:47,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1059528 states, 930627 states have (on average 1.4578762490235078) internal successors, (1356739), 931140 states have internal predecessors, (1356739), 87428 states have call successors, (87428), 35072 states have call predecessors, (87428), 41472 states have return successors, (119044), 93316 states have call predecessors, (119044), 87428 states have call successors, (119044)