./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro --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 Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 --- 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-8393723 [2022-11-18 20:49:27,848 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:49:27,854 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:49:27,891 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:49:27,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:49:27,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:49:27,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:49:27,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:49:27,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:49:27,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:49:27,912 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:49:27,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:49:27,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:49:27,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:49:27,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:49:27,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:49:27,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:49:27,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:49:27,924 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:49:27,931 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:49:27,932 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:49:27,934 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:49:27,936 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:49:27,937 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:49:27,946 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:49:27,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:49:27,947 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:49:27,949 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:49:27,949 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:49:27,950 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:49:27,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:49:27,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:49:27,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:49:27,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:49:27,956 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:49:27,957 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:49:27,957 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:49:27,958 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:49:27,958 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:49:27,959 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:49:27,960 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:49:27,960 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:49:27,998 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:49:27,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:49:27,999 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:49:27,999 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:49:28,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:49:28,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:49:28,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:49:28,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:49:28,001 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:49:28,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:49:28,002 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:49:28,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:49:28,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:49:28,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:49:28,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:49:28,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:49:28,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:49:28,004 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:49:28,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:49:28,011 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:49:28,011 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:49:28,012 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:49:28,012 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:49:28,012 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:49:28,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:28,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:49:28,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:49:28,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:49:28,014 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:49:28,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:49:28,015 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:49:28,015 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:49:28,016 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:49:28,016 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_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4ac544dc5b01c2e84192d57540176c08b809d66a678248491533d1421aab9cd9 [2022-11-18 20:49:28,317 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:49:28,343 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:49:28,346 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:49:28,347 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:49:28,348 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:49:28,350 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-11-18 20:49:28,412 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/data/7a6fb5b42/c33e61c7e2574a12bc21f35fa743b0b5/FLAGcd15becd3 [2022-11-18 20:49:29,366 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:49:29,367 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c [2022-11-18 20:49:29,418 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/data/7a6fb5b42/c33e61c7e2574a12bc21f35fa743b0b5/FLAGcd15becd3 [2022-11-18 20:49:29,780 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/data/7a6fb5b42/c33e61c7e2574a12bc21f35fa743b0b5 [2022-11-18 20:49:29,782 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:49:29,783 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:49:29,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:29,785 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:49:29,790 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:49:29,791 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:29" (1/1) ... [2022-11-18 20:49:29,792 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@172a994a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:29, skipping insertion in model container [2022-11-18 20:49:29,793 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:49:29" (1/1) ... [2022-11-18 20:49:29,800 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:49:29,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:49:30,736 WARN L234 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_9b2a1a96-f807-454f-89fe-f7075e23cf5c/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c[86591,86604] [2022-11-18 20:49:31,668 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:31,702 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:49:31,794 WARN L234 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_9b2a1a96-f807-454f-89fe-f7075e23cf5c/sv-benchmarks/c/ntdrivers/parport.i.cil-2.c[86591,86604] [2022-11-18 20:49:32,115 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:49:32,207 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:49:32,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32 WrapperNode [2022-11-18 20:49:32,208 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:49:32,209 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:32,209 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:49:32,209 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:49:32,217 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,315 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,501 INFO L138 Inliner]: procedures = 248, calls = 2342, calls flagged for inlining = 84, calls inlined = 64, statements flattened = 4748 [2022-11-18 20:49:32,502 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:49:32,503 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:49:32,503 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:49:32,503 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:49:32,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,555 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,555 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,753 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,802 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,821 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:49:32,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:49:32,861 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:49:32,861 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:49:32,862 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (1/1) ... [2022-11-18 20:49:32,869 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:49:32,881 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:32,901 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:49:32,927 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:49:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure PptDebugDumpResourceRequirementsList [2022-11-18 20:49:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDebugDumpResourceRequirementsList [2022-11-18 20:49:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLock [2022-11-18 20:49:32,953 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLock [2022-11-18 20:49:32,953 INFO L130 BoogieDeclarations]: Found specification of procedure WRITE_PORT_UCHAR [2022-11-18 20:49:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure WRITE_PORT_UCHAR [2022-11-18 20:49:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockDiskModeByte [2022-11-18 20:49:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockDiskModeByte [2022-11-18 20:49:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-11-18 20:49:32,954 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~X~~PVOID~0~TO~~BOOLEAN~0 [2022-11-18 20:49:32,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2022-11-18 20:49:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2022-11-18 20:49:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure PptClearByteMode [2022-11-18 20:49:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure PptClearByteMode [2022-11-18 20:49:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure KeStallExecutionProcessor [2022-11-18 20:49:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure KeStallExecutionProcessor [2022-11-18 20:49:32,955 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrSetMode [2022-11-18 20:49:32,955 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrSetMode [2022-11-18 20:49:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-11-18 20:49:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-11-18 20:49:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedDecrement [2022-11-18 20:49:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedDecrement [2022-11-18 20:49:32,956 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-11-18 20:49:32,956 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-11-18 20:49:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure IofCallDriver [2022-11-18 20:49:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure IofCallDriver [2022-11-18 20:49:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-11-18 20:49:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpPassThroughPnpIrpAndReleaseRemoveLock [2022-11-18 20:49:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure PptEcrClearMode [2022-11-18 20:49:32,957 INFO L138 BoogieDeclarations]: Found implementation of procedure PptEcrClearMode [2022-11-18 20:49:32,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:49:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure PptDumpRemovalRelationsList [2022-11-18 20:49:32,958 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDumpRemovalRelationsList [2022-11-18 20:49:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure PptLogError [2022-11-18 20:49:32,958 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLogError [2022-11-18 20:49:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-11-18 20:49:32,958 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpUnhandledIrp [2022-11-18 20:49:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpUnhandledIrp [2022-11-18 20:49:32,963 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterExistsNonIrqResourceList [2022-11-18 20:49:32,963 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterExistsNonIrqResourceList [2022-11-18 20:49:32,963 INFO L130 BoogieDeclarations]: Found specification of procedure PptIsNecR98Machine [2022-11-18 20:49:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure PptIsNecR98Machine [2022-11-18 20:49:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure CheckPort [2022-11-18 20:49:32,964 INFO L138 BoogieDeclarations]: Found implementation of procedure CheckPort [2022-11-18 20:49:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:49:32,964 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-11-18 20:49:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipSetDiskMode [2022-11-18 20:49:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipSetDiskMode [2022-11-18 20:49:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectLegacyZip [2022-11-18 20:49:32,965 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectLegacyZip [2022-11-18 20:49:32,965 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectDevice [2022-11-18 20:49:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectDevice [2022-11-18 20:49:32,966 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memmove [2022-11-18 20:49:32,966 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memmove [2022-11-18 20:49:32,967 INFO L130 BoogieDeclarations]: Found specification of procedure PptDisconnectInterrupt [2022-11-18 20:49:32,967 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDisconnectInterrupt [2022-11-18 20:49:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure RtlQueryRegistryValues [2022-11-18 20:49:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlQueryRegistryValues [2022-11-18 20:49:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpBounceAndCatchPnpIrp [2022-11-18 20:49:32,968 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpBounceAndCatchPnpIrp [2022-11-18 20:49:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~int [2022-11-18 20:49:32,968 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTickCount [2022-11-18 20:49:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTickCount [2022-11-18 20:49:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure IoGetConfigurationInformation [2022-11-18 20:49:32,969 INFO L138 BoogieDeclarations]: Found implementation of procedure IoGetConfigurationInformation [2022-11-18 20:49:32,969 INFO L130 BoogieDeclarations]: Found specification of procedure KeQueryTimeIncrement [2022-11-18 20:49:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure KeQueryTimeIncrement [2022-11-18 20:49:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchronizedIncrement [2022-11-18 20:49:32,970 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchronizedIncrement [2022-11-18 20:49:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2022-11-18 20:49:32,970 INFO L130 BoogieDeclarations]: Found specification of procedure PptSynchCompletionRoutine [2022-11-18 20:49:32,971 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSynchCompletionRoutine [2022-11-18 20:49:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:49:32,971 INFO L130 BoogieDeclarations]: Found specification of procedure IoReportResourceUsage [2022-11-18 20:49:32,972 INFO L138 BoogieDeclarations]: Found implementation of procedure IoReportResourceUsage [2022-11-18 20:49:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure PptInitiate1284_3 [2022-11-18 20:49:32,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptInitiate1284_3 [2022-11-18 20:49:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure PptPnpFilterRemoveIrqResourceLists [2022-11-18 20:49:32,972 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPnpFilterRemoveIrqResourceLists [2022-11-18 20:49:32,972 INFO L130 BoogieDeclarations]: Found specification of procedure PptDispatchCleanup [2022-11-18 20:49:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDispatchCleanup [2022-11-18 20:49:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure errorFn [2022-11-18 20:49:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure errorFn [2022-11-18 20:49:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2022-11-18 20:49:32,973 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2022-11-18 20:49:32,973 INFO L130 BoogieDeclarations]: Found specification of procedure RtlCompareUnicodeString [2022-11-18 20:49:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure RtlCompareUnicodeString [2022-11-18 20:49:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure READ_PORT_UCHAR [2022-11-18 20:49:32,974 INFO L138 BoogieDeclarations]: Found implementation of procedure READ_PORT_UCHAR [2022-11-18 20:49:32,974 INFO L130 BoogieDeclarations]: Found specification of procedure PptFreePort [2022-11-18 20:49:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFreePort [2022-11-18 20:49:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEcpPort [2022-11-18 20:49:32,975 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEcpPort [2022-11-18 20:49:32,975 INFO L130 BoogieDeclarations]: Found specification of procedure IoSetDeviceInterfaceState [2022-11-18 20:49:32,976 INFO L138 BoogieDeclarations]: Found implementation of procedure IoSetDeviceInterfaceState [2022-11-18 20:49:32,976 INFO L130 BoogieDeclarations]: Found specification of procedure IoWMIRegistrationControl [2022-11-18 20:49:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure IoWMIRegistrationControl [2022-11-18 20:49:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:49:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure PptDeselectLegacyZip [2022-11-18 20:49:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDeselectLegacyZip [2022-11-18 20:49:32,977 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetCancelRoutine [2022-11-18 20:49:32,977 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetCancelRoutine [2022-11-18 20:49:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure PptTrySelectDevice [2022-11-18 20:49:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure PptTrySelectDevice [2022-11-18 20:49:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 20:49:32,978 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectBytePort [2022-11-18 20:49:32,978 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectBytePort [2022-11-18 20:49:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure PptReleaseRemoveLock [2022-11-18 20:49:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure PptReleaseRemoveLock [2022-11-18 20:49:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:49:32,979 INFO L130 BoogieDeclarations]: Found specification of procedure PptPowerComplete [2022-11-18 20:49:32,979 INFO L138 BoogieDeclarations]: Found implementation of procedure PptPowerComplete [2022-11-18 20:49:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure PptFailRequest [2022-11-18 20:49:32,980 INFO L138 BoogieDeclarations]: Found implementation of procedure PptFailRequest [2022-11-18 20:49:32,980 INFO L130 BoogieDeclarations]: Found specification of procedure IoAcquireRemoveLockEx [2022-11-18 20:49:32,981 INFO L138 BoogieDeclarations]: Found implementation of procedure IoAcquireRemoveLockEx [2022-11-18 20:49:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-11-18 20:49:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure stubMoreProcessingRequired [2022-11-18 20:49:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure stubMoreProcessingRequired [2022-11-18 20:49:32,984 INFO L130 BoogieDeclarations]: Found specification of procedure PptSetByteMode [2022-11-18 20:49:32,984 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSetByteMode [2022-11-18 20:49:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure PptLegacyZipClockPrtModeByte [2022-11-18 20:49:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptLegacyZipClockPrtModeByte [2022-11-18 20:49:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetectEppPort [2022-11-18 20:49:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetectEppPort [2022-11-18 20:49:32,985 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoWidth [2022-11-18 20:49:32,985 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoWidth [2022-11-18 20:49:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure PptSend1284_3Command [2022-11-18 20:49:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure PptSend1284_3Command [2022-11-18 20:49:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure PptDetermineFifoDepth [2022-11-18 20:49:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure PptDetermineFifoDepth [2022-11-18 20:49:32,986 INFO L130 BoogieDeclarations]: Found specification of procedure PptCompleteRequest [2022-11-18 20:49:32,986 INFO L138 BoogieDeclarations]: Found implementation of procedure PptCompleteRequest [2022-11-18 20:49:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure PoCallDriver [2022-11-18 20:49:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure PoCallDriver [2022-11-18 20:49:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure InterlockedIncrement [2022-11-18 20:49:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure InterlockedIncrement [2022-11-18 20:49:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure PoRequestPowerIrp [2022-11-18 20:49:32,987 INFO L138 BoogieDeclarations]: Found implementation of procedure PoRequestPowerIrp [2022-11-18 20:49:32,987 INFO L130 BoogieDeclarations]: Found specification of procedure KeSynchronizeExecution [2022-11-18 20:49:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure KeSynchronizeExecution [2022-11-18 20:49:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure PptAcquireRemoveLockOrFailIrp [2022-11-18 20:49:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure PptAcquireRemoveLockOrFailIrp [2022-11-18 20:49:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-11-18 20:49:32,988 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~~PVOID~0~X~~UCHAR~0~TO~~NTSTATUS~0 [2022-11-18 20:49:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:49:32,988 INFO L130 BoogieDeclarations]: Found specification of procedure PoSetPowerState [2022-11-18 20:49:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure PoSetPowerState [2022-11-18 20:49:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure Ppt1284_3AssignAddress [2022-11-18 20:49:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure Ppt1284_3AssignAddress [2022-11-18 20:49:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_guard [2022-11-18 20:49:32,989 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_guard [2022-11-18 20:49:32,989 INFO L130 BoogieDeclarations]: Found specification of procedure ExAllocatePoolWithTag [2022-11-18 20:49:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ExAllocatePoolWithTag [2022-11-18 20:49:32,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:49:32,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:49:33,917 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:49:33,920 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:49:33,992 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:34,071 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##26: assume !false; [2022-11-18 20:49:34,072 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##25: assume false; [2022-11-18 20:49:34,078 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:34,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##6: assume !false; [2022-11-18 20:49:34,196 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##5: assume false; [2022-11-18 20:49:34,860 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:34,986 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume !false; [2022-11-18 20:49:34,987 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##20: assume false; [2022-11-18 20:49:35,573 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:35,578 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-18 20:49:35,578 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-18 20:49:35,724 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:35,755 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-11-18 20:49:35,755 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-11-18 20:49:35,902 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:35,912 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !false; [2022-11-18 20:49:35,912 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume false; [2022-11-18 20:49:35,915 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:35,945 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume !false; [2022-11-18 20:49:35,946 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##17: assume false; [2022-11-18 20:49:35,947 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,025 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##21: assume false; [2022-11-18 20:49:36,025 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##22: assume !false; [2022-11-18 20:49:36,439 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,441 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,442 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,443 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,443 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,445 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,453 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,455 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,462 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,467 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,468 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:36,470 WARN L816 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2022-11-18 20:49:45,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##381: assume !false; [2022-11-18 20:49:45,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##380: assume false; [2022-11-18 20:49:45,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##419: assume !false; [2022-11-18 20:49:45,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##418: assume false; [2022-11-18 20:49:45,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##483: assume !false; [2022-11-18 20:49:45,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##482: assume false; [2022-11-18 20:49:45,740 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##526: assume false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##527: assume !false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##537: assume !false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##536: assume false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##99: assume false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##75: assume !false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##74: assume false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##31: assume !false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##30: assume false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##131: assume !false; [2022-11-18 20:49:45,741 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##130: assume false; [2022-11-18 20:49:45,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##137: assume !false; [2022-11-18 20:49:45,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##136: assume false; [2022-11-18 20:49:45,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume false; [2022-11-18 20:49:45,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##163: assume !false; [2022-11-18 20:49:45,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##100: assume !false; [2022-11-18 20:49:45,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##582: assume !false; [2022-11-18 20:49:45,742 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##581: assume false; [2022-11-18 20:49:45,847 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:49:45,867 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:49:45,867 INFO L300 CfgBuilder]: Removed 34 assume(true) statements. [2022-11-18 20:49:45,871 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:45 BoogieIcfgContainer [2022-11-18 20:49:45,871 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:49:45,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:49:45,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:49:45,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:49:45,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:49:29" (1/3) ... [2022-11-18 20:49:45,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b32c0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:45, skipping insertion in model container [2022-11-18 20:49:45,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:49:32" (2/3) ... [2022-11-18 20:49:45,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5b32c0a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:49:45, skipping insertion in model container [2022-11-18 20:49:45,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:49:45" (3/3) ... [2022-11-18 20:49:45,880 INFO L112 eAbstractionObserver]: Analyzing ICFG parport.i.cil-2.c [2022-11-18 20:49:45,898 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:49:45,899 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:49:45,987 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:49:45,999 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=PETRI_NET, 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;@3ec30c21, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:49:45,999 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 20:49:46,010 INFO L276 IsEmpty]: Start isEmpty. Operand has 1755 states, 1230 states have (on average 1.473170731707317) internal successors, (1812), 1279 states have internal predecessors, (1812), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) [2022-11-18 20:49:46,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:49:46,019 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:46,019 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:46,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:46,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:46,036 INFO L85 PathProgramCache]: Analyzing trace with hash 1797685296, now seen corresponding path program 1 times [2022-11-18 20:49:46,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:46,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749437017] [2022-11-18 20:49:46,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:46,047 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:46,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:46,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:46,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749437017] [2022-11-18 20:49:46,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749437017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:46,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:46,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:49:46,582 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1362989086] [2022-11-18 20:49:46,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:46,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:49:46,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:46,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:49:46,624 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:49:46,634 INFO L87 Difference]: Start difference. First operand has 1755 states, 1230 states have (on average 1.473170731707317) internal successors, (1812), 1279 states have internal predecessors, (1812), 453 states have call successors, (453), 70 states have call predecessors, (453), 70 states have return successors, (453), 440 states have call predecessors, (453), 453 states have call successors, (453) Second operand has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:46,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:46,851 INFO L93 Difference]: Finished difference Result 3504 states and 5536 transitions. [2022-11-18 20:49:46,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:49:46,853 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 20:49:46,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:46,885 INFO L225 Difference]: With dead ends: 3504 [2022-11-18 20:49:46,885 INFO L226 Difference]: Without dead ends: 1748 [2022-11-18 20:49:46,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:49:46,907 INFO L413 NwaCegarLoop]: 2627 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2627 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:46,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 2627 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:49:46,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1748 states. [2022-11-18 20:49:47,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1748 to 1748. [2022-11-18 20:49:47,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1748 states, 1225 states have (on average 1.409795918367347) internal successors, (1727), 1272 states have internal predecessors, (1727), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2022-11-18 20:49:47,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1748 states to 1748 states and 2614 transitions. [2022-11-18 20:49:47,127 INFO L78 Accepts]: Start accepts. Automaton has 1748 states and 2614 transitions. Word has length 15 [2022-11-18 20:49:47,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:47,127 INFO L495 AbstractCegarLoop]: Abstraction has 1748 states and 2614 transitions. [2022-11-18 20:49:47,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 7.0) internal successors, (14), 2 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:47,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1748 states and 2614 transitions. [2022-11-18 20:49:47,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-11-18 20:49:47,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:47,129 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:47,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:49:47,130 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:47,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:47,131 INFO L85 PathProgramCache]: Analyzing trace with hash -736863958, now seen corresponding path program 1 times [2022-11-18 20:49:47,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:47,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283060324] [2022-11-18 20:49:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:47,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:47,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:47,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:47,501 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:47,502 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283060324] [2022-11-18 20:49:47,502 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283060324] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:47,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:47,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:47,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248713390] [2022-11-18 20:49:47,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:47,508 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:47,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:47,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:47,509 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:47,510 INFO L87 Difference]: Start difference. First operand 1748 states and 2614 transitions. Second operand has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:47,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:47,686 INFO L93 Difference]: Finished difference Result 3494 states and 5226 transitions. [2022-11-18 20:49:47,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:47,689 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 15 [2022-11-18 20:49:47,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:47,700 INFO L225 Difference]: With dead ends: 3494 [2022-11-18 20:49:47,700 INFO L226 Difference]: Without dead ends: 1750 [2022-11-18 20:49:47,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:47,711 INFO L413 NwaCegarLoop]: 2612 mSDtfsCounter, 1 mSDsluCounter, 2610 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:47,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 5222 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:49:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1750 states. [2022-11-18 20:49:47,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1750 to 1749. [2022-11-18 20:49:47,786 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1749 states, 1226 states have (on average 1.4094616639477977) internal successors, (1728), 1273 states have internal predecessors, (1728), 453 states have call successors, (453), 70 states have call predecessors, (453), 69 states have return successors, (434), 426 states have call predecessors, (434), 434 states have call successors, (434) [2022-11-18 20:49:47,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1749 states to 1749 states and 2615 transitions. [2022-11-18 20:49:47,799 INFO L78 Accepts]: Start accepts. Automaton has 1749 states and 2615 transitions. Word has length 15 [2022-11-18 20:49:47,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:47,799 INFO L495 AbstractCegarLoop]: Abstraction has 1749 states and 2615 transitions. [2022-11-18 20:49:47,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 4.666666666666667) internal successors, (14), 3 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:47,800 INFO L276 IsEmpty]: Start isEmpty. Operand 1749 states and 2615 transitions. [2022-11-18 20:49:47,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:49:47,802 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:47,802 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:47,802 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:49:47,802 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:47,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:47,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1664995512, now seen corresponding path program 1 times [2022-11-18 20:49:47,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:47,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [290462968] [2022-11-18 20:49:47,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:47,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:47,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:48,143 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:48,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [290462968] [2022-11-18 20:49:48,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [290462968] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:48,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926350343] [2022-11-18 20:49:48,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:48,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:48,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:48,148 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:48,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:49:48,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:48,946 INFO L263 TraceCheckSpWp]: Trace formula consists of 909 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-18 20:49:48,953 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:48,988 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:49:48,988 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:48,988 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926350343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:48,989 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:49:48,989 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 20:49:48,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948172420] [2022-11-18 20:49:48,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:48,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:48,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:48,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:48,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:48,992 INFO L87 Difference]: Start difference. First operand 1749 states and 2615 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:49,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:49,102 INFO L93 Difference]: Finished difference Result 1819 states and 2703 transitions. [2022-11-18 20:49:49,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:49,102 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:49:49,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:49,112 INFO L225 Difference]: With dead ends: 1819 [2022-11-18 20:49:49,113 INFO L226 Difference]: Without dead ends: 1800 [2022-11-18 20:49:49,114 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:49,115 INFO L413 NwaCegarLoop]: 2612 mSDtfsCounter, 2592 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2592 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:49,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2592 Valid, 2676 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:49:49,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1800 states. [2022-11-18 20:49:49,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1800 to 1791. [2022-11-18 20:49:49,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1260 states have (on average 1.4063492063492065) internal successors, (1772), 1309 states have internal predecessors, (1772), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-11-18 20:49:49,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2667 transitions. [2022-11-18 20:49:49,203 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2667 transitions. Word has length 17 [2022-11-18 20:49:49,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:49,203 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2667 transitions. [2022-11-18 20:49:49,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:49,204 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2667 transitions. [2022-11-18 20:49:49,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-11-18 20:49:49,210 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:49,210 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:49,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:49,419 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:49,419 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:49,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:49,420 INFO L85 PathProgramCache]: Analyzing trace with hash -1679340421, now seen corresponding path program 1 times [2022-11-18 20:49:49,421 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:49,421 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847086618] [2022-11-18 20:49:49,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:49,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:49,720 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:49,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847086618] [2022-11-18 20:49:49,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847086618] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:49,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [634094439] [2022-11-18 20:49:49,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:49,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:49,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:49,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:49,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:49:50,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:50,454 INFO L263 TraceCheckSpWp]: Trace formula consists of 907 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:49:50,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:50,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:49:50,474 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:50,474 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [634094439] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:50,474 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:49:50,474 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-11-18 20:49:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [871913806] [2022-11-18 20:49:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:50,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:50,476 INFO L87 Difference]: Start difference. First operand 1791 states and 2667 transitions. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:50,735 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:50,736 INFO L93 Difference]: Finished difference Result 1807 states and 2686 transitions. [2022-11-18 20:49:50,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:50,737 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2022-11-18 20:49:50,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:50,746 INFO L225 Difference]: With dead ends: 1807 [2022-11-18 20:49:50,746 INFO L226 Difference]: Without dead ends: 1791 [2022-11-18 20:49:50,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:50,749 INFO L413 NwaCegarLoop]: 2614 mSDtfsCounter, 0 mSDsluCounter, 2557 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5171 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:50,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5171 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:49:50,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1791 states. [2022-11-18 20:49:50,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1791 to 1791. [2022-11-18 20:49:50,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1791 states, 1260 states have (on average 1.4055555555555554) internal successors, (1771), 1309 states have internal predecessors, (1771), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-11-18 20:49:50,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1791 states to 1791 states and 2666 transitions. [2022-11-18 20:49:50,832 INFO L78 Accepts]: Start accepts. Automaton has 1791 states and 2666 transitions. Word has length 17 [2022-11-18 20:49:50,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:50,832 INFO L495 AbstractCegarLoop]: Abstraction has 1791 states and 2666 transitions. [2022-11-18 20:49:50,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:50,832 INFO L276 IsEmpty]: Start isEmpty. Operand 1791 states and 2666 transitions. [2022-11-18 20:49:50,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-11-18 20:49:50,833 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:50,834 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] [2022-11-18 20:49:50,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:51,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:51,042 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:51,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:51,043 INFO L85 PathProgramCache]: Analyzing trace with hash -342670261, now seen corresponding path program 1 times [2022-11-18 20:49:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:51,043 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316857587] [2022-11-18 20:49:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:51,288 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:51,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:51,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316857587] [2022-11-18 20:49:51,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316857587] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:51,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1871161240] [2022-11-18 20:49:51,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:51,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:51,290 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:51,291 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:51,315 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:49:52,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:52,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 1070 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-18 20:49:52,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:52,133 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:52,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:49:52,159 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:52,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1871161240] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:49:52,160 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:49:52,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2022-11-18 20:49:52,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722940755] [2022-11-18 20:49:52,160 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:49:52,160 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:52,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:52,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:52,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:52,161 INFO L87 Difference]: Start difference. First operand 1791 states and 2666 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:52,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:52,452 INFO L93 Difference]: Finished difference Result 3583 states and 5335 transitions. [2022-11-18 20:49:52,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:49:52,453 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 22 [2022-11-18 20:49:52,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:52,465 INFO L225 Difference]: With dead ends: 3583 [2022-11-18 20:49:52,465 INFO L226 Difference]: Without dead ends: 1797 [2022-11-18 20:49:52,473 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:52,474 INFO L413 NwaCegarLoop]: 2611 mSDtfsCounter, 6 mSDsluCounter, 2609 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 5220 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:52,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 5220 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:49:52,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1797 states. [2022-11-18 20:49:52,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1797 to 1797. [2022-11-18 20:49:52,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1797 states, 1266 states have (on average 1.4036334913112165) internal successors, (1777), 1315 states have internal predecessors, (1777), 457 states have call successors, (457), 74 states have call predecessors, (457), 73 states have return successors, (438), 430 states have call predecessors, (438), 438 states have call successors, (438) [2022-11-18 20:49:52,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1797 states to 1797 states and 2672 transitions. [2022-11-18 20:49:52,588 INFO L78 Accepts]: Start accepts. Automaton has 1797 states and 2672 transitions. Word has length 22 [2022-11-18 20:49:52,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:52,588 INFO L495 AbstractCegarLoop]: Abstraction has 1797 states and 2672 transitions. [2022-11-18 20:49:52,589 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 7 states have internal predecessors, (26), 1 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:52,589 INFO L276 IsEmpty]: Start isEmpty. Operand 1797 states and 2672 transitions. [2022-11-18 20:49:52,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-11-18 20:49:52,590 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:52,590 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:52,611 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:52,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9b2a1a96-f807-454f-89fe-f7075e23cf5c/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:52,809 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:52,809 INFO L85 PathProgramCache]: Analyzing trace with hash -309598415, now seen corresponding path program 2 times [2022-11-18 20:49:52,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:52,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883938027] [2022-11-18 20:49:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:52,810 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:52,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:49:53,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:53,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883938027] [2022-11-18 20:49:53,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883938027] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:53,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:53,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:49:53,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298470074] [2022-11-18 20:49:53,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:53,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:49:53,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:53,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:49:53,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:53,243 INFO L87 Difference]: Start difference. First operand 1797 states and 2672 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:53,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:53,776 INFO L93 Difference]: Finished difference Result 4577 states and 6872 transitions. [2022-11-18 20:49:53,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:49:53,776 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 28 [2022-11-18 20:49:53,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:53,802 INFO L225 Difference]: With dead ends: 4577 [2022-11-18 20:49:53,802 INFO L226 Difference]: Without dead ends: 3384 [2022-11-18 20:49:53,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:49:53,816 INFO L413 NwaCegarLoop]: 4606 mSDtfsCounter, 2497 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2497 SdHoareTripleChecker+Valid, 6960 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:53,817 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2497 Valid, 6960 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 115 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-18 20:49:53,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3384 states. [2022-11-18 20:49:54,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3384 to 3353. [2022-11-18 20:49:54,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3353 states, 2362 states have (on average 1.4005080440304827) internal successors, (3308), 2430 states have internal predecessors, (3308), 851 states have call successors, (851), 142 states have call predecessors, (851), 139 states have return successors, (869), 818 states have call predecessors, (869), 835 states have call successors, (869) [2022-11-18 20:49:54,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3353 states to 3353 states and 5028 transitions. [2022-11-18 20:49:54,038 INFO L78 Accepts]: Start accepts. Automaton has 3353 states and 5028 transitions. Word has length 28 [2022-11-18 20:49:54,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:54,039 INFO L495 AbstractCegarLoop]: Abstraction has 3353 states and 5028 transitions. [2022-11-18 20:49:54,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 states have internal predecessors, (19), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:49:54,039 INFO L276 IsEmpty]: Start isEmpty. Operand 3353 states and 5028 transitions. [2022-11-18 20:49:54,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2022-11-18 20:49:54,047 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:54,047 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:54,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:49:54,048 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:54,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:54,048 INFO L85 PathProgramCache]: Analyzing trace with hash -2138324457, now seen corresponding path program 1 times [2022-11-18 20:49:54,048 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:54,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902876210] [2022-11-18 20:49:54,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:54,049 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:54,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:54,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:54,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:54,415 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:49:54,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:54,416 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902876210] [2022-11-18 20:49:54,416 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902876210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:54,416 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:54,416 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:49:54,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1542497515] [2022-11-18 20:49:54,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:54,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:49:54,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:54,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:49:54,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:49:54,418 INFO L87 Difference]: Start difference. First operand 3353 states and 5028 transitions. Second operand has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:01,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:01,526 INFO L93 Difference]: Finished difference Result 4142 states and 6187 transitions. [2022-11-18 20:50:01,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:50:01,527 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 40 [2022-11-18 20:50:01,527 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:01,551 INFO L225 Difference]: With dead ends: 4142 [2022-11-18 20:50:01,551 INFO L226 Difference]: Without dead ends: 4137 [2022-11-18 20:50:01,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:50:01,554 INFO L413 NwaCegarLoop]: 1327 mSDtfsCounter, 2696 mSDsluCounter, 1964 mSDsCounter, 0 mSdLazyCounter, 3445 mSolverCounterSat, 1196 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3020 SdHoareTripleChecker+Valid, 3291 SdHoareTripleChecker+Invalid, 4641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1196 IncrementalHoareTripleChecker+Valid, 3445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:01,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3020 Valid, 3291 Invalid, 4641 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1196 Valid, 3445 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 20:50:01,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4137 states. [2022-11-18 20:50:01,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4137 to 4108. [2022-11-18 20:50:01,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 2834 states have (on average 1.3927311220889202) internal successors, (3947), 2912 states have internal predecessors, (3947), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-11-18 20:50:01,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 6142 transitions. [2022-11-18 20:50:01,838 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 6142 transitions. Word has length 40 [2022-11-18 20:50:01,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:01,838 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 6142 transitions. [2022-11-18 20:50:01,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.75) internal successors, (31), 3 states have internal predecessors, (31), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:01,839 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 6142 transitions. [2022-11-18 20:50:01,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-11-18 20:50:01,844 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:01,844 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:01,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:50:01,844 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:01,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:01,845 INFO L85 PathProgramCache]: Analyzing trace with hash -1411016770, now seen corresponding path program 1 times [2022-11-18 20:50:01,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:01,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [960326403] [2022-11-18 20:50:01,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:01,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:01,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:02,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:02,241 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:50:02,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:02,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [960326403] [2022-11-18 20:50:02,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [960326403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:02,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:02,242 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:50:02,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977100946] [2022-11-18 20:50:02,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:02,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:50:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:50:02,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:50:02,244 INFO L87 Difference]: Start difference. First operand 4108 states and 6142 transitions. Second operand has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:11,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:11,439 INFO L93 Difference]: Finished difference Result 4155 states and 6199 transitions. [2022-11-18 20:50:11,440 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:50:11,440 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 41 [2022-11-18 20:50:11,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:11,468 INFO L225 Difference]: With dead ends: 4155 [2022-11-18 20:50:11,468 INFO L226 Difference]: Without dead ends: 4146 [2022-11-18 20:50:11,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:50:11,473 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 6083 mSDsluCounter, 2669 mSDsCounter, 0 mSdLazyCounter, 5355 mSolverCounterSat, 3649 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6215 SdHoareTripleChecker+Valid, 3973 SdHoareTripleChecker+Invalid, 9004 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3649 IncrementalHoareTripleChecker+Valid, 5355 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:11,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6215 Valid, 3973 Invalid, 9004 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3649 Valid, 5355 Invalid, 0 Unknown, 0 Unchecked, 8.7s Time] [2022-11-18 20:50:11,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4146 states. [2022-11-18 20:50:11,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4146 to 4108. [2022-11-18 20:50:11,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 2834 states have (on average 1.3920254057868737) internal successors, (3945), 2912 states have internal predecessors, (3945), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-11-18 20:50:11,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 6140 transitions. [2022-11-18 20:50:11,805 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 6140 transitions. Word has length 41 [2022-11-18 20:50:11,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:11,807 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 6140 transitions. [2022-11-18 20:50:11,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.333333333333333) internal successors, (32), 5 states have internal predecessors, (32), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:11,807 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 6140 transitions. [2022-11-18 20:50:11,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2022-11-18 20:50:11,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:11,809 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:11,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:50:11,809 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:11,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:11,810 INFO L85 PathProgramCache]: Analyzing trace with hash -1681168541, now seen corresponding path program 1 times [2022-11-18 20:50:11,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:11,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249732582] [2022-11-18 20:50:11,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:11,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:11,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:12,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:12,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:50:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:12,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249732582] [2022-11-18 20:50:12,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249732582] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:12,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:12,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:50:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688049811] [2022-11-18 20:50:12,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:12,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:50:12,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:12,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:50:12,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:50:12,150 INFO L87 Difference]: Start difference. First operand 4108 states and 6140 transitions. Second operand has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:20,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:20,618 INFO L93 Difference]: Finished difference Result 4148 states and 6188 transitions. [2022-11-18 20:50:20,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:50:20,618 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 42 [2022-11-18 20:50:20,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:20,637 INFO L225 Difference]: With dead ends: 4148 [2022-11-18 20:50:20,638 INFO L226 Difference]: Without dead ends: 4139 [2022-11-18 20:50:20,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:50:20,640 INFO L413 NwaCegarLoop]: 1304 mSDtfsCounter, 6082 mSDsluCounter, 2664 mSDsCounter, 0 mSdLazyCounter, 5343 mSolverCounterSat, 3651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6214 SdHoareTripleChecker+Valid, 3968 SdHoareTripleChecker+Invalid, 8994 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3651 IncrementalHoareTripleChecker+Valid, 5343 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:20,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6214 Valid, 3968 Invalid, 8994 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3651 Valid, 5343 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-11-18 20:50:20,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4139 states. [2022-11-18 20:50:20,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4139 to 4108. [2022-11-18 20:50:20,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4108 states, 2834 states have (on average 1.3913196894848272) internal successors, (3943), 2912 states have internal predecessors, (3943), 1088 states have call successors, (1088), 187 states have call predecessors, (1088), 185 states have return successors, (1107), 1051 states have call predecessors, (1107), 1072 states have call successors, (1107) [2022-11-18 20:50:20,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4108 states to 4108 states and 6138 transitions. [2022-11-18 20:50:20,948 INFO L78 Accepts]: Start accepts. Automaton has 4108 states and 6138 transitions. Word has length 42 [2022-11-18 20:50:20,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:20,950 INFO L495 AbstractCegarLoop]: Abstraction has 4108 states and 6138 transitions. [2022-11-18 20:50:20,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.5) internal successors, (33), 5 states have internal predecessors, (33), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:20,951 INFO L276 IsEmpty]: Start isEmpty. Operand 4108 states and 6138 transitions. [2022-11-18 20:50:20,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:50:20,953 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:20,953 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:20,953 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:50:20,953 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:20,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:20,954 INFO L85 PathProgramCache]: Analyzing trace with hash 632130830, now seen corresponding path program 1 times [2022-11-18 20:50:20,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:20,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959288206] [2022-11-18 20:50:20,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:20,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:21,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:50:21,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:21,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959288206] [2022-11-18 20:50:21,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959288206] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:21,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:21,288 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:21,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121365024] [2022-11-18 20:50:21,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:21,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:50:21,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:21,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:50:21,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:21,290 INFO L87 Difference]: Start difference. First operand 4108 states and 6138 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:21,655 INFO L93 Difference]: Finished difference Result 6717 states and 10015 transitions. [2022-11-18 20:50:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:50:21,655 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-18 20:50:21,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:21,702 INFO L225 Difference]: With dead ends: 6717 [2022-11-18 20:50:21,702 INFO L226 Difference]: Without dead ends: 6414 [2022-11-18 20:50:21,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:21,707 INFO L413 NwaCegarLoop]: 3834 mSDtfsCounter, 2495 mSDsluCounter, 1870 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2495 SdHoareTripleChecker+Valid, 5704 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:21,708 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2495 Valid, 5704 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:50:21,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6414 states. [2022-11-18 20:50:22,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6414 to 6333. [2022-11-18 20:50:22,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6333 states, 4322 states have (on average 1.3933364183248496) internal successors, (6022), 4440 states have internal predecessors, (6022), 1726 states have call successors, (1726), 283 states have call predecessors, (1726), 284 states have return successors, (1757), 1678 states have call predecessors, (1757), 1713 states have call successors, (1757) [2022-11-18 20:50:22,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6333 states to 6333 states and 9505 transitions. [2022-11-18 20:50:22,217 INFO L78 Accepts]: Start accepts. Automaton has 6333 states and 9505 transitions. Word has length 43 [2022-11-18 20:50:22,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:22,218 INFO L495 AbstractCegarLoop]: Abstraction has 6333 states and 9505 transitions. [2022-11-18 20:50:22,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (3), 2 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:22,218 INFO L276 IsEmpty]: Start isEmpty. Operand 6333 states and 9505 transitions. [2022-11-18 20:50:22,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:50:22,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:22,221 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:22,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:50:22,221 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:22,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:22,222 INFO L85 PathProgramCache]: Analyzing trace with hash -521771513, now seen corresponding path program 1 times [2022-11-18 20:50:22,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:22,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341280301] [2022-11-18 20:50:22,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:22,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:22,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:22,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:22,601 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:50:22,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:22,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341280301] [2022-11-18 20:50:22,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341280301] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:22,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:22,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:50:22,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1817913932] [2022-11-18 20:50:22,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:22,603 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:50:22,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:22,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:50:22,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:50:22,604 INFO L87 Difference]: Start difference. First operand 6333 states and 9505 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:27,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:27,904 INFO L93 Difference]: Finished difference Result 6361 states and 9539 transitions. [2022-11-18 20:50:27,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:50:27,904 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 43 [2022-11-18 20:50:27,905 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:27,937 INFO L225 Difference]: With dead ends: 6361 [2022-11-18 20:50:27,937 INFO L226 Difference]: Without dead ends: 6315 [2022-11-18 20:50:27,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:50:27,942 INFO L413 NwaCegarLoop]: 1281 mSDtfsCounter, 1136 mSDsluCounter, 3223 mSDsCounter, 0 mSdLazyCounter, 4380 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1413 SdHoareTripleChecker+Valid, 4504 SdHoareTripleChecker+Invalid, 4565 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 4380 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:27,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1413 Valid, 4504 Invalid, 4565 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 4380 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-11-18 20:50:27,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2022-11-18 20:50:28,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 6314. [2022-11-18 20:50:28,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6314 states, 4309 states have (on average 1.3933627291715016) internal successors, (6004), 4427 states have internal predecessors, (6004), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2022-11-18 20:50:28,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6314 states to 6314 states and 9475 transitions. [2022-11-18 20:50:28,530 INFO L78 Accepts]: Start accepts. Automaton has 6314 states and 9475 transitions. Word has length 43 [2022-11-18 20:50:28,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:28,530 INFO L495 AbstractCegarLoop]: Abstraction has 6314 states and 9475 transitions. [2022-11-18 20:50:28,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:50:28,531 INFO L276 IsEmpty]: Start isEmpty. Operand 6314 states and 9475 transitions. [2022-11-18 20:50:28,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2022-11-18 20:50:28,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:28,532 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:28,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:50:28,532 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:28,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:28,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1583716769, now seen corresponding path program 1 times [2022-11-18 20:50:28,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:28,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1423255008] [2022-11-18 20:50:28,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:28,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:28,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:28,801 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:50:28,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:28,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1423255008] [2022-11-18 20:50:28,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1423255008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:28,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:28,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 20:50:28,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433136944] [2022-11-18 20:50:28,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:28,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 20:50:28,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:28,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 20:50:28,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:28,804 INFO L87 Difference]: Start difference. First operand 6314 states and 9475 transitions. Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:29,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:29,233 INFO L93 Difference]: Finished difference Result 6317 states and 9477 transitions. [2022-11-18 20:50:29,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 20:50:29,234 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2022-11-18 20:50:29,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:29,260 INFO L225 Difference]: With dead ends: 6317 [2022-11-18 20:50:29,260 INFO L226 Difference]: Without dead ends: 6314 [2022-11-18 20:50:29,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 20:50:29,265 INFO L413 NwaCegarLoop]: 2566 mSDtfsCounter, 12 mSDsluCounter, 2508 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 5074 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:29,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 5074 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:50:29,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6314 states. [2022-11-18 20:50:29,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6314 to 6314. [2022-11-18 20:50:29,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6314 states, 4309 states have (on average 1.3931306567649107) internal successors, (6003), 4427 states have internal predecessors, (6003), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 284 states have return successors, (1751), 1672 states have call predecessors, (1751), 1707 states have call successors, (1751) [2022-11-18 20:50:29,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6314 states to 6314 states and 9474 transitions. [2022-11-18 20:50:29,763 INFO L78 Accepts]: Start accepts. Automaton has 6314 states and 9474 transitions. Word has length 43 [2022-11-18 20:50:29,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:29,764 INFO L495 AbstractCegarLoop]: Abstraction has 6314 states and 9474 transitions. [2022-11-18 20:50:29,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 3 states have internal predecessors, (35), 2 states have call successors, (2), 2 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:50:29,765 INFO L276 IsEmpty]: Start isEmpty. Operand 6314 states and 9474 transitions. [2022-11-18 20:50:29,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 20:50:29,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:29,766 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:29,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:50:29,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:29,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:29,767 INFO L85 PathProgramCache]: Analyzing trace with hash -1058862154, now seen corresponding path program 1 times [2022-11-18 20:50:29,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:29,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628294121] [2022-11-18 20:50:29,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:29,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:29,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:50:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:50:30,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:30,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:50:30,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:30,328 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628294121] [2022-11-18 20:50:30,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628294121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:30,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:30,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:50:30,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257535897] [2022-11-18 20:50:30,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:30,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:50:30,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:30,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:50:30,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:50:30,332 INFO L87 Difference]: Start difference. First operand 6314 states and 9474 transitions. Second operand has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:50:33,731 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:50:35,856 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:50:40,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:50:47,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:47,727 INFO L93 Difference]: Finished difference Result 12923 states and 19496 transitions. [2022-11-18 20:50:47,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:50:47,727 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-18 20:50:47,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:47,759 INFO L225 Difference]: With dead ends: 12923 [2022-11-18 20:50:47,759 INFO L226 Difference]: Without dead ends: 7187 [2022-11-18 20:50:47,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:50:47,782 INFO L413 NwaCegarLoop]: 1543 mSDtfsCounter, 797 mSDsluCounter, 8777 mSDsCounter, 0 mSdLazyCounter, 9869 mSolverCounterSat, 368 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1021 SdHoareTripleChecker+Valid, 10320 SdHoareTripleChecker+Invalid, 10240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 9869 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:47,782 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1021 Valid, 10320 Invalid, 10240 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [368 Valid, 9869 Invalid, 3 Unknown, 0 Unchecked, 16.6s Time] [2022-11-18 20:50:47,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7187 states. [2022-11-18 20:50:48,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7187 to 6323. [2022-11-18 20:50:48,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6323 states, 4316 states have (on average 1.392493049119555) internal successors, (6010), 4434 states have internal predecessors, (6010), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 286 states have return successors, (1756), 1674 states have call predecessors, (1756), 1707 states have call successors, (1756) [2022-11-18 20:50:48,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6323 states to 6323 states and 9486 transitions. [2022-11-18 20:50:48,513 INFO L78 Accepts]: Start accepts. Automaton has 6323 states and 9486 transitions. Word has length 46 [2022-11-18 20:50:48,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:48,513 INFO L495 AbstractCegarLoop]: Abstraction has 6323 states and 9486 transitions. [2022-11-18 20:50:48,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.888888888888889) internal successors, (35), 6 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:50:48,514 INFO L276 IsEmpty]: Start isEmpty. Operand 6323 states and 9486 transitions. [2022-11-18 20:50:48,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2022-11-18 20:50:48,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:48,517 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:48,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:50:48,517 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:48,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:48,518 INFO L85 PathProgramCache]: Analyzing trace with hash -847511241, now seen corresponding path program 1 times [2022-11-18 20:50:48,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:48,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048742791] [2022-11-18 20:50:48,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:48,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:48,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:48,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:50:48,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:48,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:50:48,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:50:49,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:49,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048742791] [2022-11-18 20:50:49,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048742791] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:49,004 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:49,004 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:50:49,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687650857] [2022-11-18 20:50:49,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:49,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:50:49,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:49,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:50:49,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:50:49,007 INFO L87 Difference]: Start difference. First operand 6323 states and 9486 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:50:52,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:50:57,327 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:51:02,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:02,638 INFO L93 Difference]: Finished difference Result 12257 states and 18490 transitions. [2022-11-18 20:51:02,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:51:02,638 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 46 [2022-11-18 20:51:02,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:02,671 INFO L225 Difference]: With dead ends: 12257 [2022-11-18 20:51:02,672 INFO L226 Difference]: Without dead ends: 7149 [2022-11-18 20:51:02,690 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:02,691 INFO L413 NwaCegarLoop]: 1508 mSDtfsCounter, 759 mSDsluCounter, 4607 mSDsCounter, 0 mSdLazyCounter, 5919 mSolverCounterSat, 362 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 972 SdHoareTripleChecker+Valid, 6115 SdHoareTripleChecker+Invalid, 6283 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 362 IncrementalHoareTripleChecker+Valid, 5919 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:02,691 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [972 Valid, 6115 Invalid, 6283 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [362 Valid, 5919 Invalid, 2 Unknown, 0 Unchecked, 13.0s Time] [2022-11-18 20:51:02,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7149 states. [2022-11-18 20:51:03,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7149 to 6317. [2022-11-18 20:51:03,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6317 states, 4311 states have (on average 1.3924843423799582) internal successors, (6003), 4429 states have internal predecessors, (6003), 1720 states have call successors, (1720), 283 states have call predecessors, (1720), 285 states have return successors, (1753), 1673 states have call predecessors, (1753), 1707 states have call successors, (1753) [2022-11-18 20:51:03,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6317 states to 6317 states and 9476 transitions. [2022-11-18 20:51:03,265 INFO L78 Accepts]: Start accepts. Automaton has 6317 states and 9476 transitions. Word has length 46 [2022-11-18 20:51:03,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:03,265 INFO L495 AbstractCegarLoop]: Abstraction has 6317 states and 9476 transitions. [2022-11-18 20:51:03,265 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:51:03,266 INFO L276 IsEmpty]: Start isEmpty. Operand 6317 states and 9476 transitions. [2022-11-18 20:51:03,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2022-11-18 20:51:03,268 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:03,268 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:03,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:51:03,268 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:03,269 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:03,269 INFO L85 PathProgramCache]: Analyzing trace with hash 77323503, now seen corresponding path program 1 times [2022-11-18 20:51:03,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:03,269 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564368478] [2022-11-18 20:51:03,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:03,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:03,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:03,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:51:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:03,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:51:03,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:03,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564368478] [2022-11-18 20:51:03,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564368478] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:03,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:03,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:03,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340043123] [2022-11-18 20:51:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:03,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:03,883 INFO L87 Difference]: Start difference. First operand 6317 states and 9476 transitions. Second operand has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:51:08,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:51:20,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:20,136 INFO L93 Difference]: Finished difference Result 7177 states and 10867 transitions. [2022-11-18 20:51:20,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:51:20,137 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 47 [2022-11-18 20:51:20,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:20,166 INFO L225 Difference]: With dead ends: 7177 [2022-11-18 20:51:20,166 INFO L226 Difference]: Without dead ends: 7147 [2022-11-18 20:51:20,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:51:20,171 INFO L413 NwaCegarLoop]: 1222 mSDtfsCounter, 1174 mSDsluCounter, 6962 mSDsCounter, 0 mSdLazyCounter, 10319 mSolverCounterSat, 392 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 8184 SdHoareTripleChecker+Invalid, 10712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 10319 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:20,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 8184 Invalid, 10712 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [392 Valid, 10319 Invalid, 1 Unknown, 0 Unchecked, 15.6s Time] [2022-11-18 20:51:20,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7147 states. [2022-11-18 20:51:20,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7147 to 6315. [2022-11-18 20:51:20,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 4310 states have (on average 1.3923433874709976) internal successors, (6001), 4428 states have internal predecessors, (6001), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2022-11-18 20:51:20,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 9472 transitions. [2022-11-18 20:51:20,728 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 9472 transitions. Word has length 47 [2022-11-18 20:51:20,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:20,728 INFO L495 AbstractCegarLoop]: Abstraction has 6315 states and 9472 transitions. [2022-11-18 20:51:20,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:51:20,729 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 9472 transitions. [2022-11-18 20:51:20,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:51:20,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:20,731 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:20,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 20:51:20,731 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:20,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:20,732 INFO L85 PathProgramCache]: Analyzing trace with hash 528461000, now seen corresponding path program 1 times [2022-11-18 20:51:20,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:20,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1249304066] [2022-11-18 20:51:20,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:20,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:20,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:51:21,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:51:21,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:21,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:51:21,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:21,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1249304066] [2022-11-18 20:51:21,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1249304066] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:21,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:21,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:51:21,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427190740] [2022-11-18 20:51:21,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:21,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:51:21,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:21,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:51:21,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:21,344 INFO L87 Difference]: Start difference. First operand 6315 states and 9472 transitions. Second operand has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:51:25,329 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:51:30,493 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:51:36,752 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:51:41,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:41,657 INFO L93 Difference]: Finished difference Result 8365 states and 12766 transitions. [2022-11-18 20:51:41,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:51:41,658 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-18 20:51:41,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:41,693 INFO L225 Difference]: With dead ends: 8365 [2022-11-18 20:51:41,693 INFO L226 Difference]: Without dead ends: 8325 [2022-11-18 20:51:41,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:51:41,698 INFO L413 NwaCegarLoop]: 2001 mSDtfsCounter, 1193 mSDsluCounter, 11109 mSDsCounter, 0 mSdLazyCounter, 10279 mSolverCounterSat, 380 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1495 SdHoareTripleChecker+Valid, 13110 SdHoareTripleChecker+Invalid, 10662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 380 IncrementalHoareTripleChecker+Valid, 10279 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:41,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1495 Valid, 13110 Invalid, 10662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [380 Valid, 10279 Invalid, 3 Unknown, 0 Unchecked, 19.5s Time] [2022-11-18 20:51:41,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8325 states. [2022-11-18 20:51:42,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8325 to 6315. [2022-11-18 20:51:42,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6315 states, 4310 states have (on average 1.3921113689095128) internal successors, (6000), 4428 states have internal predecessors, (6000), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2022-11-18 20:51:42,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 9471 transitions. [2022-11-18 20:51:42,440 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 9471 transitions. Word has length 50 [2022-11-18 20:51:42,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:42,440 INFO L495 AbstractCegarLoop]: Abstraction has 6315 states and 9471 transitions. [2022-11-18 20:51:42,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.333333333333333) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:51:42,441 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 9471 transitions. [2022-11-18 20:51:42,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:51:42,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:42,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:42,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:51:42,443 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:42,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:42,443 INFO L85 PathProgramCache]: Analyzing trace with hash 886270175, now seen corresponding path program 1 times [2022-11-18 20:51:42,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:42,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1314571874] [2022-11-18 20:51:42,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:42,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:42,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:42,739 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:51:42,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:42,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1314571874] [2022-11-18 20:51:42,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1314571874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:42,740 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:42,740 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:51:42,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196934112] [2022-11-18 20:51:42,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:42,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:51:42,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:42,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:51:42,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:51:42,742 INFO L87 Difference]: Start difference. First operand 6315 states and 9471 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:43,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:43,194 INFO L93 Difference]: Finished difference Result 6407 states and 9595 transitions. [2022-11-18 20:51:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:51:43,195 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 20:51:43,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:43,221 INFO L225 Difference]: With dead ends: 6407 [2022-11-18 20:51:43,221 INFO L226 Difference]: Without dead ends: 6376 [2022-11-18 20:51:43,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:43,226 INFO L413 NwaCegarLoop]: 2574 mSDtfsCounter, 160 mSDsluCounter, 10337 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 12911 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:43,227 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 12911 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-18 20:51:43,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6376 states. [2022-11-18 20:51:43,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6376 to 6318. [2022-11-18 20:51:43,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 4313 states have (on average 1.3918386274055181) internal successors, (6003), 4431 states have internal predecessors, (6003), 1719 states have call successors, (1719), 283 states have call predecessors, (1719), 285 states have return successors, (1752), 1672 states have call predecessors, (1752), 1706 states have call successors, (1752) [2022-11-18 20:51:43,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 9474 transitions. [2022-11-18 20:51:43,972 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 9474 transitions. Word has length 45 [2022-11-18 20:51:43,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:43,972 INFO L495 AbstractCegarLoop]: Abstraction has 6318 states and 9474 transitions. [2022-11-18 20:51:43,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:43,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 9474 transitions. [2022-11-18 20:51:43,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-11-18 20:51:43,974 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:43,974 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:43,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:51:43,975 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:43,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:43,976 INFO L85 PathProgramCache]: Analyzing trace with hash -902104929, now seen corresponding path program 1 times [2022-11-18 20:51:43,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:43,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1285624332] [2022-11-18 20:51:43,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:43,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:44,356 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:51:44,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:44,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1285624332] [2022-11-18 20:51:44,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1285624332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:44,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:44,357 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:51:44,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1165389897] [2022-11-18 20:51:44,357 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:44,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:51:44,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:44,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:51:44,358 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:51:44,359 INFO L87 Difference]: Start difference. First operand 6318 states and 9474 transitions. Second operand has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:45,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:45,012 INFO L93 Difference]: Finished difference Result 6403 states and 9588 transitions. [2022-11-18 20:51:45,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:51:45,013 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-11-18 20:51:45,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:45,038 INFO L225 Difference]: With dead ends: 6403 [2022-11-18 20:51:45,038 INFO L226 Difference]: Without dead ends: 6372 [2022-11-18 20:51:45,042 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:51:45,043 INFO L413 NwaCegarLoop]: 2584 mSDtfsCounter, 160 mSDsluCounter, 10351 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 12935 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:45,043 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 12935 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-18 20:51:45,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6372 states. [2022-11-18 20:51:45,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6372 to 6311. [2022-11-18 20:51:45,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6311 states, 4307 states have (on average 1.3919201300208963) internal successors, (5995), 4424 states have internal predecessors, (5995), 1718 states have call successors, (1718), 283 states have call predecessors, (1718), 285 states have return successors, (1751), 1671 states have call predecessors, (1751), 1705 states have call successors, (1751) [2022-11-18 20:51:45,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6311 states to 6311 states and 9464 transitions. [2022-11-18 20:51:45,642 INFO L78 Accepts]: Start accepts. Automaton has 6311 states and 9464 transitions. Word has length 45 [2022-11-18 20:51:45,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:45,642 INFO L495 AbstractCegarLoop]: Abstraction has 6311 states and 9464 transitions. [2022-11-18 20:51:45,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.333333333333333) internal successors, (38), 6 states have internal predecessors, (38), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:51:45,643 INFO L276 IsEmpty]: Start isEmpty. Operand 6311 states and 9464 transitions. [2022-11-18 20:51:45,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2022-11-18 20:51:45,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:45,645 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:45,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:51:45,645 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:45,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:45,645 INFO L85 PathProgramCache]: Analyzing trace with hash 813980809, now seen corresponding path program 1 times [2022-11-18 20:51:45,646 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:45,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045172241] [2022-11-18 20:51:45,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:45,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:45,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:45,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 20:51:45,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:46,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:51:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:46,013 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:51:46,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:46,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045172241] [2022-11-18 20:51:46,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045172241] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:46,014 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:46,014 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:51:46,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100407341] [2022-11-18 20:51:46,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:46,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:51:46,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:46,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:51:46,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:51:46,016 INFO L87 Difference]: Start difference. First operand 6311 states and 9464 transitions. Second operand has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:51:53,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:53,785 INFO L93 Difference]: Finished difference Result 7170 states and 10854 transitions. [2022-11-18 20:51:53,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:51:53,786 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 53 [2022-11-18 20:51:53,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:53,815 INFO L225 Difference]: With dead ends: 7170 [2022-11-18 20:51:53,815 INFO L226 Difference]: Without dead ends: 7140 [2022-11-18 20:51:53,819 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:51:53,819 INFO L413 NwaCegarLoop]: 1219 mSDtfsCounter, 1844 mSDsluCounter, 4164 mSDsCounter, 0 mSdLazyCounter, 6738 mSolverCounterSat, 1007 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2154 SdHoareTripleChecker+Valid, 5383 SdHoareTripleChecker+Invalid, 7745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1007 IncrementalHoareTripleChecker+Valid, 6738 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:53,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2154 Valid, 5383 Invalid, 7745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1007 Valid, 6738 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-18 20:51:53,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7140 states. [2022-11-18 20:51:54,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7140 to 6308. [2022-11-18 20:51:54,398 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6308 states, 4305 states have (on average 1.391869918699187) internal successors, (5992), 4422 states have internal predecessors, (5992), 1717 states have call successors, (1717), 283 states have call predecessors, (1717), 285 states have return successors, (1750), 1670 states have call predecessors, (1750), 1704 states have call successors, (1750) [2022-11-18 20:51:54,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6308 states to 6308 states and 9459 transitions. [2022-11-18 20:51:54,423 INFO L78 Accepts]: Start accepts. Automaton has 6308 states and 9459 transitions. Word has length 53 [2022-11-18 20:51:54,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:54,423 INFO L495 AbstractCegarLoop]: Abstraction has 6308 states and 9459 transitions. [2022-11-18 20:51:54,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.0) internal successors, (42), 4 states have internal predecessors, (42), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:51:54,424 INFO L276 IsEmpty]: Start isEmpty. Operand 6308 states and 9459 transitions. [2022-11-18 20:51:54,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-18 20:51:54,425 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:54,426 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:54,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:51:54,426 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:54,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:54,427 INFO L85 PathProgramCache]: Analyzing trace with hash -1831968281, now seen corresponding path program 1 times [2022-11-18 20:51:54,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:54,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1811448181] [2022-11-18 20:51:54,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:54,427 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:54,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:51:54,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 20:51:54,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:54,874 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:51:54,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:54,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1811448181] [2022-11-18 20:51:54,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1811448181] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:54,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:54,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:51:54,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038636761] [2022-11-18 20:51:54,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:54,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:51:54,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:54,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:51:54,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:51:54,878 INFO L87 Difference]: Start difference. First operand 6308 states and 9459 transitions. Second operand has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:52:02,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:02,763 INFO L93 Difference]: Finished difference Result 7167 states and 10849 transitions. [2022-11-18 20:52:02,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:52:02,763 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 50 [2022-11-18 20:52:02,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:02,788 INFO L225 Difference]: With dead ends: 7167 [2022-11-18 20:52:02,788 INFO L226 Difference]: Without dead ends: 7131 [2022-11-18 20:52:02,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:52:02,794 INFO L413 NwaCegarLoop]: 1186 mSDtfsCounter, 1833 mSDsluCounter, 4068 mSDsCounter, 0 mSdLazyCounter, 6784 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2143 SdHoareTripleChecker+Valid, 5254 SdHoareTripleChecker+Invalid, 7789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 6784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:02,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2143 Valid, 5254 Invalid, 7789 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1005 Valid, 6784 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-11-18 20:52:02,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7131 states. [2022-11-18 20:52:03,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7131 to 6299. [2022-11-18 20:52:03,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6299 states, 4299 states have (on average 1.391951616655036) internal successors, (5984), 4416 states have internal predecessors, (5984), 1715 states have call successors, (1715), 282 states have call predecessors, (1715), 284 states have return successors, (1748), 1668 states have call predecessors, (1748), 1702 states have call successors, (1748) [2022-11-18 20:52:03,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6299 states to 6299 states and 9447 transitions. [2022-11-18 20:52:03,451 INFO L78 Accepts]: Start accepts. Automaton has 6299 states and 9447 transitions. Word has length 50 [2022-11-18 20:52:03,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:03,452 INFO L495 AbstractCegarLoop]: Abstraction has 6299 states and 9447 transitions. [2022-11-18 20:52:03,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.571428571428571) internal successors, (39), 4 states have internal predecessors, (39), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:52:03,452 INFO L276 IsEmpty]: Start isEmpty. Operand 6299 states and 9447 transitions. [2022-11-18 20:52:03,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:52:03,454 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:03,454 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:03,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:52:03,455 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:03,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:03,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1176886221, now seen corresponding path program 1 times [2022-11-18 20:52:03,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:03,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284449686] [2022-11-18 20:52:03,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:03,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:52:03,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:03,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:52:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:03,880 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:52:03,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:03,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284449686] [2022-11-18 20:52:03,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1284449686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:03,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:03,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:52:03,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771836538] [2022-11-18 20:52:03,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:03,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:52:03,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:03,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:52:03,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:03,883 INFO L87 Difference]: Start difference. First operand 6299 states and 9447 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:52:07,336 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:52:09,440 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:52:14,221 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:52:20,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:20,836 INFO L93 Difference]: Finished difference Result 11867 states and 17875 transitions. [2022-11-18 20:52:20,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:52:20,837 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 58 [2022-11-18 20:52:20,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:20,855 INFO L225 Difference]: With dead ends: 11867 [2022-11-18 20:52:20,855 INFO L226 Difference]: Without dead ends: 7003 [2022-11-18 20:52:20,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:52:20,873 INFO L413 NwaCegarLoop]: 1204 mSDtfsCounter, 1155 mSDsluCounter, 5789 mSDsCounter, 0 mSdLazyCounter, 8713 mSolverCounterSat, 379 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1465 SdHoareTripleChecker+Valid, 6993 SdHoareTripleChecker+Invalid, 9093 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 8713 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:20,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1465 Valid, 6993 Invalid, 9093 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 8713 Invalid, 1 Unknown, 0 Unchecked, 16.2s Time] [2022-11-18 20:52:20,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7003 states. [2022-11-18 20:52:21,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7003 to 6145. [2022-11-18 20:52:21,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6145 states, 4184 states have (on average 1.3898183556405355) internal successors, (5815), 4286 states have internal predecessors, (5815), 1684 states have call successors, (1684), 270 states have call predecessors, (1684), 276 states have return successors, (1702), 1656 states have call predecessors, (1702), 1674 states have call successors, (1702) [2022-11-18 20:52:21,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6145 states to 6145 states and 9201 transitions. [2022-11-18 20:52:21,320 INFO L78 Accepts]: Start accepts. Automaton has 6145 states and 9201 transitions. Word has length 58 [2022-11-18 20:52:21,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:21,321 INFO L495 AbstractCegarLoop]: Abstraction has 6145 states and 9201 transitions. [2022-11-18 20:52:21,321 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 5 states have internal predecessors, (41), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:52:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 6145 states and 9201 transitions. [2022-11-18 20:52:21,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-18 20:52:21,325 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:21,325 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:21,325 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:52:21,325 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:21,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:21,326 INFO L85 PathProgramCache]: Analyzing trace with hash -1145583680, now seen corresponding path program 1 times [2022-11-18 20:52:21,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:21,326 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474430398] [2022-11-18 20:52:21,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:21,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:21,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:21,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:52:21,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:21,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:21,907 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:52:21,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:21,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474430398] [2022-11-18 20:52:21,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474430398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:21,907 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:21,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:52:21,908 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1736062910] [2022-11-18 20:52:21,908 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:21,908 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:52:21,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:21,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:52:21,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:21,909 INFO L87 Difference]: Start difference. First operand 6145 states and 9201 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:52:24,376 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.04s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:52:26,502 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:52:29,956 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:52:34,760 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:52:41,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:41,089 INFO L93 Difference]: Finished difference Result 7135 states and 10763 transitions. [2022-11-18 20:52:41,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:52:41,089 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 54 [2022-11-18 20:52:41,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:41,106 INFO L225 Difference]: With dead ends: 7135 [2022-11-18 20:52:41,106 INFO L226 Difference]: Without dead ends: 7041 [2022-11-18 20:52:41,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:52:41,109 INFO L413 NwaCegarLoop]: 1549 mSDtfsCounter, 949 mSDsluCounter, 8612 mSDsCounter, 0 mSdLazyCounter, 10045 mSolverCounterSat, 409 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1211 SdHoareTripleChecker+Valid, 10161 SdHoareTripleChecker+Invalid, 10457 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 10045 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:41,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1211 Valid, 10161 Invalid, 10457 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [409 Valid, 10045 Invalid, 3 Unknown, 0 Unchecked, 18.3s Time] [2022-11-18 20:52:41,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7041 states. [2022-11-18 20:52:41,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7041 to 6153. [2022-11-18 20:52:41,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6153 states, 4190 states have (on average 1.3894988066825775) internal successors, (5822), 4294 states have internal predecessors, (5822), 1686 states have call successors, (1686), 270 states have call predecessors, (1686), 276 states have return successors, (1704), 1658 states have call predecessors, (1704), 1676 states have call successors, (1704) [2022-11-18 20:52:41,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6153 states to 6153 states and 9212 transitions. [2022-11-18 20:52:41,556 INFO L78 Accepts]: Start accepts. Automaton has 6153 states and 9212 transitions. Word has length 54 [2022-11-18 20:52:41,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:41,557 INFO L495 AbstractCegarLoop]: Abstraction has 6153 states and 9212 transitions. [2022-11-18 20:52:41,557 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 6 states have internal predecessors, (43), 2 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:52:41,557 INFO L276 IsEmpty]: Start isEmpty. Operand 6153 states and 9212 transitions. [2022-11-18 20:52:41,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:52:41,559 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:41,559 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:41,559 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:52:41,559 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:41,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:41,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1477708461, now seen corresponding path program 1 times [2022-11-18 20:52:41,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:41,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077381923] [2022-11-18 20:52:41,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:41,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:41,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:41,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:52:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:42,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:42,073 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:52:42,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:42,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077381923] [2022-11-18 20:52:42,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077381923] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:42,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:42,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:52:42,075 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483793509] [2022-11-18 20:52:42,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:42,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:52:42,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:42,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:52:42,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:52:42,076 INFO L87 Difference]: Start difference. First operand 6153 states and 9212 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:52:52,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:52:52,259 INFO L93 Difference]: Finished difference Result 7012 states and 10600 transitions. [2022-11-18 20:52:52,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:52:52,260 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2022-11-18 20:52:52,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:52:52,279 INFO L225 Difference]: With dead ends: 7012 [2022-11-18 20:52:52,279 INFO L226 Difference]: Without dead ends: 6982 [2022-11-18 20:52:52,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:52:52,283 INFO L413 NwaCegarLoop]: 1165 mSDtfsCounter, 1868 mSDsluCounter, 6087 mSDsCounter, 0 mSdLazyCounter, 9789 mSolverCounterSat, 1005 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2176 SdHoareTripleChecker+Valid, 7252 SdHoareTripleChecker+Invalid, 10794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1005 IncrementalHoareTripleChecker+Valid, 9789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:52:52,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2176 Valid, 7252 Invalid, 10794 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1005 Valid, 9789 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-18 20:52:52,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6982 states. [2022-11-18 20:52:52,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6982 to 6151. [2022-11-18 20:52:52,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6151 states, 4189 states have (on average 1.3893530675578898) internal successors, (5820), 4293 states have internal predecessors, (5820), 1685 states have call successors, (1685), 270 states have call predecessors, (1685), 276 states have return successors, (1703), 1657 states have call predecessors, (1703), 1675 states have call successors, (1703) [2022-11-18 20:52:52,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6151 states to 6151 states and 9208 transitions. [2022-11-18 20:52:52,795 INFO L78 Accepts]: Start accepts. Automaton has 6151 states and 9208 transitions. Word has length 55 [2022-11-18 20:52:52,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:52:52,796 INFO L495 AbstractCegarLoop]: Abstraction has 6151 states and 9208 transitions. [2022-11-18 20:52:52,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-18 20:52:52,796 INFO L276 IsEmpty]: Start isEmpty. Operand 6151 states and 9208 transitions. [2022-11-18 20:52:52,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 20:52:52,798 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:52:52,798 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:52:52,798 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:52:52,799 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:52:52,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:52:52,799 INFO L85 PathProgramCache]: Analyzing trace with hash 2066910865, now seen corresponding path program 1 times [2022-11-18 20:52:52,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:52:52,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1537890429] [2022-11-18 20:52:52,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:52:52,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:52:52,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:52:53,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:52:53,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:52:53,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:52:53,263 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:52:53,263 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:52:53,263 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1537890429] [2022-11-18 20:52:53,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1537890429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:52:53,264 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:52:53,264 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:52:53,264 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768584470] [2022-11-18 20:52:53,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:52:53,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:52:53,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:52:53,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:52:53,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:52:53,267 INFO L87 Difference]: Start difference. First operand 6151 states and 9208 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:53:01,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:01,232 INFO L93 Difference]: Finished difference Result 6296 states and 9403 transitions. [2022-11-18 20:53:01,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 20:53:01,233 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-11-18 20:53:01,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:01,247 INFO L225 Difference]: With dead ends: 6296 [2022-11-18 20:53:01,247 INFO L226 Difference]: Without dead ends: 6255 [2022-11-18 20:53:01,249 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:53:01,249 INFO L413 NwaCegarLoop]: 1264 mSDtfsCounter, 1167 mSDsluCounter, 6576 mSDsCounter, 0 mSdLazyCounter, 8698 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1459 SdHoareTripleChecker+Valid, 7840 SdHoareTripleChecker+Invalid, 8871 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 8698 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:01,250 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1459 Valid, 7840 Invalid, 8871 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [173 Valid, 8698 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-18 20:53:01,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6255 states. [2022-11-18 20:53:01,622 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6255 to 6156. [2022-11-18 20:53:01,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6156 states, 4193 states have (on average 1.3889816360601002) internal successors, (5824), 4296 states have internal predecessors, (5824), 1685 states have call successors, (1685), 270 states have call predecessors, (1685), 277 states have return successors, (1704), 1659 states have call predecessors, (1704), 1675 states have call successors, (1704) [2022-11-18 20:53:01,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6156 states to 6156 states and 9213 transitions. [2022-11-18 20:53:01,642 INFO L78 Accepts]: Start accepts. Automaton has 6156 states and 9213 transitions. Word has length 56 [2022-11-18 20:53:01,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:01,642 INFO L495 AbstractCegarLoop]: Abstraction has 6156 states and 9213 transitions. [2022-11-18 20:53:01,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 5 states have internal predecessors, (43), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:53:01,642 INFO L276 IsEmpty]: Start isEmpty. Operand 6156 states and 9213 transitions. [2022-11-18 20:53:01,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-11-18 20:53:01,644 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:01,644 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:01,645 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:53:01,645 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:01,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:01,645 INFO L85 PathProgramCache]: Analyzing trace with hash -1534954734, now seen corresponding path program 1 times [2022-11-18 20:53:01,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:01,646 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1478637867] [2022-11-18 20:53:01,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:01,646 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:01,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:53:01,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:01,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:01,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:53:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:02,031 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:53:02,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:02,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1478637867] [2022-11-18 20:53:02,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1478637867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:02,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:02,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:53:02,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616410353] [2022-11-18 20:53:02,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:02,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:53:02,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:02,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:53:02,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:53:02,033 INFO L87 Difference]: Start difference. First operand 6156 states and 9213 transitions. Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:53:08,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:08,598 INFO L93 Difference]: Finished difference Result 6184 states and 9247 transitions. [2022-11-18 20:53:08,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:53:08,598 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 56 [2022-11-18 20:53:08,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:08,613 INFO L225 Difference]: With dead ends: 6184 [2022-11-18 20:53:08,613 INFO L226 Difference]: Without dead ends: 6154 [2022-11-18 20:53:08,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:08,617 INFO L413 NwaCegarLoop]: 1244 mSDtfsCounter, 1157 mSDsluCounter, 4189 mSDsCounter, 0 mSdLazyCounter, 5798 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1434 SdHoareTripleChecker+Valid, 5433 SdHoareTripleChecker+Invalid, 5965 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 5798 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:08,617 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1434 Valid, 5433 Invalid, 5965 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 5798 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-18 20:53:08,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6154 states. [2022-11-18 20:53:09,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6154 to 6149. [2022-11-18 20:53:09,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6149 states, 4188 states have (on average 1.389207258834766) internal successors, (5818), 4292 states have internal predecessors, (5818), 1684 states have call successors, (1684), 270 states have call predecessors, (1684), 276 states have return successors, (1702), 1656 states have call predecessors, (1702), 1674 states have call successors, (1702) [2022-11-18 20:53:09,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6149 states to 6149 states and 9204 transitions. [2022-11-18 20:53:09,149 INFO L78 Accepts]: Start accepts. Automaton has 6149 states and 9204 transitions. Word has length 56 [2022-11-18 20:53:09,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:09,149 INFO L495 AbstractCegarLoop]: Abstraction has 6149 states and 9204 transitions. [2022-11-18 20:53:09,149 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-11-18 20:53:09,150 INFO L276 IsEmpty]: Start isEmpty. Operand 6149 states and 9204 transitions. [2022-11-18 20:53:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-11-18 20:53:09,151 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:09,151 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:09,151 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:53:09,151 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:09,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:09,152 INFO L85 PathProgramCache]: Analyzing trace with hash 1012250305, now seen corresponding path program 1 times [2022-11-18 20:53:09,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:09,152 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048783638] [2022-11-18 20:53:09,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:09,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:09,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:09,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:53:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:09,668 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:53:09,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:09,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048783638] [2022-11-18 20:53:09,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048783638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:09,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:09,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:53:09,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572182697] [2022-11-18 20:53:09,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:09,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:53:09,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:09,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:53:09,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:53:09,671 INFO L87 Difference]: Start difference. First operand 6149 states and 9204 transitions. Second operand has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:53:12,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.32s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:53:14,915 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:53:22,779 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:53:29,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:29,940 INFO L93 Difference]: Finished difference Result 6909 states and 10372 transitions. [2022-11-18 20:53:29,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:53:29,941 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 55 [2022-11-18 20:53:29,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:29,960 INFO L225 Difference]: With dead ends: 6909 [2022-11-18 20:53:29,960 INFO L226 Difference]: Without dead ends: 6822 [2022-11-18 20:53:29,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=85, Invalid=257, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:53:29,964 INFO L413 NwaCegarLoop]: 1213 mSDtfsCounter, 5509 mSDsluCounter, 4217 mSDsCounter, 0 mSdLazyCounter, 9420 mSolverCounterSat, 3149 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5662 SdHoareTripleChecker+Valid, 5430 SdHoareTripleChecker+Invalid, 12571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3149 IncrementalHoareTripleChecker+Valid, 9420 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:29,964 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5662 Valid, 5430 Invalid, 12571 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3149 Valid, 9420 Invalid, 2 Unknown, 0 Unchecked, 19.1s Time] [2022-11-18 20:53:29,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6822 states. [2022-11-18 20:53:30,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6822 to 6195. [2022-11-18 20:53:30,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6195 states, 4224 states have (on average 1.3884943181818181) internal successors, (5865), 4329 states have internal predecessors, (5865), 1688 states have call successors, (1688), 275 states have call predecessors, (1688), 282 states have return successors, (1706), 1660 states have call predecessors, (1706), 1678 states have call successors, (1706) [2022-11-18 20:53:30,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6195 states to 6195 states and 9259 transitions. [2022-11-18 20:53:30,535 INFO L78 Accepts]: Start accepts. Automaton has 6195 states and 9259 transitions. Word has length 55 [2022-11-18 20:53:30,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:30,535 INFO L495 AbstractCegarLoop]: Abstraction has 6195 states and 9259 transitions. [2022-11-18 20:53:30,535 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 4.6) internal successors, (46), 9 states have internal predecessors, (46), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:53:30,535 INFO L276 IsEmpty]: Start isEmpty. Operand 6195 states and 9259 transitions. [2022-11-18 20:53:30,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:53:30,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:30,537 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:30,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:53:30,537 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:30,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:30,538 INFO L85 PathProgramCache]: Analyzing trace with hash -689457778, now seen corresponding path program 1 times [2022-11-18 20:53:30,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:30,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937986573] [2022-11-18 20:53:30,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:30,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:30,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:30,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:53:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:30,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:53:30,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:30,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-11-18 20:53:30,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:30,974 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:53:30,974 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:30,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937986573] [2022-11-18 20:53:30,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937986573] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:30,975 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:30,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:53:30,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317107577] [2022-11-18 20:53:30,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:30,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:53:30,976 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:30,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:53:30,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:53:30,976 INFO L87 Difference]: Start difference. First operand 6195 states and 9259 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 20:53:33,843 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.64s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:53:35,941 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:53:44,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:53:44,537 INFO L93 Difference]: Finished difference Result 7062 states and 10595 transitions. [2022-11-18 20:53:44,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:53:44,537 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 69 [2022-11-18 20:53:44,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:53:44,552 INFO L225 Difference]: With dead ends: 7062 [2022-11-18 20:53:44,553 INFO L226 Difference]: Without dead ends: 6091 [2022-11-18 20:53:44,558 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:53:44,559 INFO L413 NwaCegarLoop]: 1201 mSDtfsCounter, 1844 mSDsluCounter, 5116 mSDsCounter, 0 mSdLazyCounter, 8415 mSolverCounterSat, 1019 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2161 SdHoareTripleChecker+Valid, 6317 SdHoareTripleChecker+Invalid, 9435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1019 IncrementalHoareTripleChecker+Valid, 8415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:53:44,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2161 Valid, 6317 Invalid, 9435 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1019 Valid, 8415 Invalid, 1 Unknown, 0 Unchecked, 12.6s Time] [2022-11-18 20:53:44,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6091 states. [2022-11-18 20:53:45,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6091 to 5341. [2022-11-18 20:53:45,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5341 states, 3680 states have (on average 1.3869565217391304) internal successors, (5104), 3768 states have internal predecessors, (5104), 1418 states have call successors, (1418), 235 states have call predecessors, (1418), 242 states have return successors, (1436), 1395 states have call predecessors, (1436), 1408 states have call successors, (1436) [2022-11-18 20:53:45,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5341 states to 5341 states and 7958 transitions. [2022-11-18 20:53:45,051 INFO L78 Accepts]: Start accepts. Automaton has 5341 states and 7958 transitions. Word has length 69 [2022-11-18 20:53:45,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:53:45,051 INFO L495 AbstractCegarLoop]: Abstraction has 5341 states and 7958 transitions. [2022-11-18 20:53:45,051 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 5 states have internal predecessors, (51), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2022-11-18 20:53:45,051 INFO L276 IsEmpty]: Start isEmpty. Operand 5341 states and 7958 transitions. [2022-11-18 20:53:45,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-11-18 20:53:45,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:53:45,053 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:53:45,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:53:45,054 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:53:45,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:53:45,054 INFO L85 PathProgramCache]: Analyzing trace with hash 1356383491, now seen corresponding path program 1 times [2022-11-18 20:53:45,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:53:45,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851336147] [2022-11-18 20:53:45,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:53:45,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:53:45,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:53:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:45,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:53:45,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:53:45,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:53:45,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:53:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:53:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:53:45,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:53:45,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851336147] [2022-11-18 20:53:45,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851336147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:53:45,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:53:45,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:53:45,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1286185616] [2022-11-18 20:53:45,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:53:45,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:53:45,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:53:45,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:53:45,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:53:45,477 INFO L87 Difference]: Start difference. First operand 5341 states and 7958 transitions. Second operand has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:53:49,007 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.90s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:53:51,134 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:53:57,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.01s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:03,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:03,357 INFO L93 Difference]: Finished difference Result 6122 states and 9193 transitions. [2022-11-18 20:54:03,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:54:03,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 63 [2022-11-18 20:54:03,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:03,372 INFO L225 Difference]: With dead ends: 6122 [2022-11-18 20:54:03,373 INFO L226 Difference]: Without dead ends: 6069 [2022-11-18 20:54:03,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:54:03,376 INFO L413 NwaCegarLoop]: 1191 mSDtfsCounter, 2498 mSDsluCounter, 5760 mSDsCounter, 0 mSdLazyCounter, 8792 mSolverCounterSat, 1687 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2808 SdHoareTripleChecker+Valid, 6951 SdHoareTripleChecker+Invalid, 10480 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1687 IncrementalHoareTripleChecker+Valid, 8792 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:03,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2808 Valid, 6951 Invalid, 10480 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1687 Valid, 8792 Invalid, 1 Unknown, 0 Unchecked, 17.0s Time] [2022-11-18 20:54:03,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6069 states. [2022-11-18 20:54:03,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6069 to 5328. [2022-11-18 20:54:03,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5328 states, 3672 states have (on average 1.3872549019607843) internal successors, (5094), 3759 states have internal predecessors, (5094), 1415 states have call successors, (1415), 233 states have call predecessors, (1415), 240 states have return successors, (1433), 1393 states have call predecessors, (1433), 1405 states have call successors, (1433) [2022-11-18 20:54:03,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5328 states to 5328 states and 7942 transitions. [2022-11-18 20:54:03,838 INFO L78 Accepts]: Start accepts. Automaton has 5328 states and 7942 transitions. Word has length 63 [2022-11-18 20:54:03,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:03,838 INFO L495 AbstractCegarLoop]: Abstraction has 5328 states and 7942 transitions. [2022-11-18 20:54:03,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.777777777777778) internal successors, (43), 5 states have internal predecessors, (43), 3 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 20:54:03,839 INFO L276 IsEmpty]: Start isEmpty. Operand 5328 states and 7942 transitions. [2022-11-18 20:54:03,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:54:03,841 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:03,841 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:03,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:54:03,842 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:03,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:03,842 INFO L85 PathProgramCache]: Analyzing trace with hash 1609764262, now seen corresponding path program 1 times [2022-11-18 20:54:03,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:03,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554690008] [2022-11-18 20:54:03,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:03,843 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:04,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:54:04,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:04,220 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:54:04,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:04,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554690008] [2022-11-18 20:54:04,221 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554690008] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:04,221 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:04,221 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:04,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746194209] [2022-11-18 20:54:04,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:04,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:54:04,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:04,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:54:04,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:04,223 INFO L87 Difference]: Start difference. First operand 5328 states and 7942 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:54:06,874 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.40s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:08,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:14,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.74s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:19,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:19,208 INFO L93 Difference]: Finished difference Result 8212 states and 12324 transitions. [2022-11-18 20:54:19,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:54:19,208 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-18 20:54:19,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:19,223 INFO L225 Difference]: With dead ends: 8212 [2022-11-18 20:54:19,223 INFO L226 Difference]: Without dead ends: 5809 [2022-11-18 20:54:19,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:54:19,232 INFO L413 NwaCegarLoop]: 1567 mSDtfsCounter, 2756 mSDsluCounter, 3112 mSDsCounter, 0 mSdLazyCounter, 4530 mSolverCounterSat, 1134 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2915 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 5665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1134 IncrementalHoareTripleChecker+Valid, 4530 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:19,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2915 Valid, 4679 Invalid, 5665 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1134 Valid, 4530 Invalid, 1 Unknown, 0 Unchecked, 13.9s Time] [2022-11-18 20:54:19,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5809 states. [2022-11-18 20:54:19,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5809 to 5285. [2022-11-18 20:54:19,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 3633 states have (on average 1.3908615469309111) internal successors, (5053), 3731 states have internal predecessors, (5053), 1414 states have call successors, (1414), 233 states have call predecessors, (1414), 237 states have return successors, (1418), 1378 states have call predecessors, (1418), 1404 states have call successors, (1418) [2022-11-18 20:54:19,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 7885 transitions. [2022-11-18 20:54:19,726 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 7885 transitions. Word has length 57 [2022-11-18 20:54:19,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:19,727 INFO L495 AbstractCegarLoop]: Abstraction has 5285 states and 7885 transitions. [2022-11-18 20:54:19,727 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:54:19,727 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 7885 transitions. [2022-11-18 20:54:19,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2022-11-18 20:54:19,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:19,729 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:19,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:54:19,730 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:19,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:19,730 INFO L85 PathProgramCache]: Analyzing trace with hash 164695718, now seen corresponding path program 1 times [2022-11-18 20:54:19,730 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:19,731 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508652601] [2022-11-18 20:54:19,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:19,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:19,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:54:19,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:19,954 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:54:19,954 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:19,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508652601] [2022-11-18 20:54:19,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508652601] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:19,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:19,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:54:19,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342485728] [2022-11-18 20:54:19,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:19,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:54:19,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:19,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:54:19,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:54:19,956 INFO L87 Difference]: Start difference. First operand 5285 states and 7885 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:54:22,970 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:25,048 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:29,554 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:32,470 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.11s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:54:40,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:40,359 INFO L93 Difference]: Finished difference Result 7083 states and 10656 transitions. [2022-11-18 20:54:40,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 20:54:40,359 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 57 [2022-11-18 20:54:40,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:40,384 INFO L225 Difference]: With dead ends: 7083 [2022-11-18 20:54:40,385 INFO L226 Difference]: Without dead ends: 7070 [2022-11-18 20:54:40,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:54:40,390 INFO L413 NwaCegarLoop]: 2278 mSDtfsCounter, 2114 mSDsluCounter, 2177 mSDsCounter, 0 mSdLazyCounter, 4709 mSolverCounterSat, 965 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 18.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2433 SdHoareTripleChecker+Valid, 4455 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 965 IncrementalHoareTripleChecker+Valid, 4709 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:40,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2433 Valid, 4455 Invalid, 5676 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [965 Valid, 4709 Invalid, 2 Unknown, 0 Unchecked, 19.3s Time] [2022-11-18 20:54:40,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7070 states. [2022-11-18 20:54:40,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7070 to 5319. [2022-11-18 20:54:40,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5319 states, 3661 states have (on average 1.3892379131384867) internal successors, (5086), 3760 states have internal predecessors, (5086), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1421), 1381 states have call predecessors, (1421), 1406 states have call successors, (1421) [2022-11-18 20:54:40,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5319 states to 5319 states and 7923 transitions. [2022-11-18 20:54:40,937 INFO L78 Accepts]: Start accepts. Automaton has 5319 states and 7923 transitions. Word has length 57 [2022-11-18 20:54:40,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:40,938 INFO L495 AbstractCegarLoop]: Abstraction has 5319 states and 7923 transitions. [2022-11-18 20:54:40,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 3 states have internal predecessors, (48), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:54:40,938 INFO L276 IsEmpty]: Start isEmpty. Operand 5319 states and 7923 transitions. [2022-11-18 20:54:40,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-11-18 20:54:40,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:40,940 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:40,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:54:40,941 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:40,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:40,941 INFO L85 PathProgramCache]: Analyzing trace with hash -2126323058, now seen corresponding path program 1 times [2022-11-18 20:54:40,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:40,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520397675] [2022-11-18 20:54:40,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:40,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:41,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:41,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:54:41,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:41,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:41,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:41,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:54:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:41,278 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:54:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:41,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520397675] [2022-11-18 20:54:41,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520397675] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:41,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:41,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:41,279 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098785474] [2022-11-18 20:54:41,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:41,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:54:41,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:41,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:54:41,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:41,281 INFO L87 Difference]: Start difference. First operand 5319 states and 7923 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:54:49,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:49,228 INFO L93 Difference]: Finished difference Result 6033 states and 9075 transitions. [2022-11-18 20:54:49,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:54:49,229 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 69 [2022-11-18 20:54:49,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:49,250 INFO L225 Difference]: With dead ends: 6033 [2022-11-18 20:54:49,250 INFO L226 Difference]: Without dead ends: 6003 [2022-11-18 20:54:49,254 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:49,255 INFO L413 NwaCegarLoop]: 1194 mSDtfsCounter, 1850 mSDsluCounter, 2972 mSDsCounter, 0 mSdLazyCounter, 5191 mSolverCounterSat, 990 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2158 SdHoareTripleChecker+Valid, 4166 SdHoareTripleChecker+Invalid, 6181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 990 IncrementalHoareTripleChecker+Valid, 5191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:49,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2158 Valid, 4166 Invalid, 6181 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [990 Valid, 5191 Invalid, 0 Unknown, 0 Unchecked, 6.9s Time] [2022-11-18 20:54:49,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6003 states. [2022-11-18 20:54:49,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6003 to 5317. [2022-11-18 20:54:49,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5317 states, 3659 states have (on average 1.389450669581853) internal successors, (5084), 3759 states have internal predecessors, (5084), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1420), 1380 states have call predecessors, (1420), 1406 states have call successors, (1420) [2022-11-18 20:54:49,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5317 states to 5317 states and 7920 transitions. [2022-11-18 20:54:49,837 INFO L78 Accepts]: Start accepts. Automaton has 5317 states and 7920 transitions. Word has length 69 [2022-11-18 20:54:49,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:49,837 INFO L495 AbstractCegarLoop]: Abstraction has 5317 states and 7920 transitions. [2022-11-18 20:54:49,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:54:49,837 INFO L276 IsEmpty]: Start isEmpty. Operand 5317 states and 7920 transitions. [2022-11-18 20:54:49,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2022-11-18 20:54:49,839 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:49,840 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:49,840 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:54:49,840 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:49,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:49,841 INFO L85 PathProgramCache]: Analyzing trace with hash 1131438296, now seen corresponding path program 1 times [2022-11-18 20:54:49,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:49,841 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547787447] [2022-11-18 20:54:49,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:49,841 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:49,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:50,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:54:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:50,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:50,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:50,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:54:50,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:50,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:54:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:50,165 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:54:50,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:50,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547787447] [2022-11-18 20:54:50,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547787447] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:50,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:50,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:50,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117386807] [2022-11-18 20:54:50,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:50,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:54:50,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:50,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:54:50,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:50,167 INFO L87 Difference]: Start difference. First operand 5317 states and 7920 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:54:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:54:57,688 INFO L93 Difference]: Finished difference Result 6031 states and 9072 transitions. [2022-11-18 20:54:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:54:57,689 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 61 [2022-11-18 20:54:57,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:54:57,710 INFO L225 Difference]: With dead ends: 6031 [2022-11-18 20:54:57,710 INFO L226 Difference]: Without dead ends: 6001 [2022-11-18 20:54:57,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:54:57,714 INFO L413 NwaCegarLoop]: 1189 mSDtfsCounter, 1849 mSDsluCounter, 2971 mSDsCounter, 0 mSdLazyCounter, 5194 mSolverCounterSat, 986 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2157 SdHoareTripleChecker+Valid, 4160 SdHoareTripleChecker+Invalid, 6180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 986 IncrementalHoareTripleChecker+Valid, 5194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:54:57,714 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2157 Valid, 4160 Invalid, 6180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [986 Valid, 5194 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-11-18 20:54:57,719 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6001 states. [2022-11-18 20:54:58,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6001 to 5315. [2022-11-18 20:54:58,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5315 states, 3657 states have (on average 1.3896636587366693) internal successors, (5082), 3758 states have internal predecessors, (5082), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1419), 1379 states have call predecessors, (1419), 1406 states have call successors, (1419) [2022-11-18 20:54:58,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5315 states to 5315 states and 7917 transitions. [2022-11-18 20:54:58,317 INFO L78 Accepts]: Start accepts. Automaton has 5315 states and 7917 transitions. Word has length 61 [2022-11-18 20:54:58,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:54:58,317 INFO L495 AbstractCegarLoop]: Abstraction has 5315 states and 7917 transitions. [2022-11-18 20:54:58,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:54:58,318 INFO L276 IsEmpty]: Start isEmpty. Operand 5315 states and 7917 transitions. [2022-11-18 20:54:58,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:54:58,320 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:54:58,320 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:54:58,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:54:58,321 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:54:58,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:54:58,321 INFO L85 PathProgramCache]: Analyzing trace with hash 1263131919, now seen corresponding path program 1 times [2022-11-18 20:54:58,321 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:54:58,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637192504] [2022-11-18 20:54:58,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:54:58,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:54:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:54:58,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:54:58,675 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:54:58,676 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:54:58,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637192504] [2022-11-18 20:54:58,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637192504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:54:58,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:54:58,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:54:58,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012673535] [2022-11-18 20:54:58,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:54:58,677 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:54:58,677 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:54:58,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:54:58,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:54:58,678 INFO L87 Difference]: Start difference. First operand 5315 states and 7917 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:55:01,518 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.28s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:03,632 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:09,885 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:22,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:22,040 INFO L93 Difference]: Finished difference Result 7064 states and 10630 transitions. [2022-11-18 20:55:22,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:55:22,040 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-18 20:55:22,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:22,068 INFO L225 Difference]: With dead ends: 7064 [2022-11-18 20:55:22,068 INFO L226 Difference]: Without dead ends: 7060 [2022-11-18 20:55:22,071 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:55:22,072 INFO L413 NwaCegarLoop]: 2262 mSDtfsCounter, 5213 mSDsluCounter, 2970 mSDsCounter, 0 mSdLazyCounter, 6392 mSolverCounterSat, 3289 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5381 SdHoareTripleChecker+Valid, 5232 SdHoareTripleChecker+Invalid, 9683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3289 IncrementalHoareTripleChecker+Valid, 6392 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:22,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5381 Valid, 5232 Invalid, 9683 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3289 Valid, 6392 Invalid, 2 Unknown, 0 Unchecked, 21.8s Time] [2022-11-18 20:55:22,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7060 states. [2022-11-18 20:55:22,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7060 to 5318. [2022-11-18 20:55:22,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5318 states, 3660 states have (on average 1.3896174863387978) internal successors, (5086), 3761 states have internal predecessors, (5086), 1416 states have call successors, (1416), 236 states have call predecessors, (1416), 241 states have return successors, (1419), 1379 states have call predecessors, (1419), 1406 states have call successors, (1419) [2022-11-18 20:55:22,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5318 states to 5318 states and 7921 transitions. [2022-11-18 20:55:22,605 INFO L78 Accepts]: Start accepts. Automaton has 5318 states and 7921 transitions. Word has length 58 [2022-11-18 20:55:22,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:22,606 INFO L495 AbstractCegarLoop]: Abstraction has 5318 states and 7921 transitions. [2022-11-18 20:55:22,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:55:22,606 INFO L276 IsEmpty]: Start isEmpty. Operand 5318 states and 7921 transitions. [2022-11-18 20:55:22,607 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-18 20:55:22,607 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:22,608 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:22,608 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 20:55:22,608 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:55:22,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:22,609 INFO L85 PathProgramCache]: Analyzing trace with hash 1263408749, now seen corresponding path program 1 times [2022-11-18 20:55:22,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:22,609 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214621303] [2022-11-18 20:55:22,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:22,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:22,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:23,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 20:55:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:23,089 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:55:23,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:23,090 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1214621303] [2022-11-18 20:55:23,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1214621303] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:23,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:23,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:55:23,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929238507] [2022-11-18 20:55:23,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:23,091 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:55:23,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:23,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:55:23,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:55:23,092 INFO L87 Difference]: Start difference. First operand 5318 states and 7921 transitions. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:55:26,072 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.41s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:28,212 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:34,735 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:42,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:55:42,105 INFO L93 Difference]: Finished difference Result 5850 states and 8774 transitions. [2022-11-18 20:55:42,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:55:42,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 58 [2022-11-18 20:55:42,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:55:42,129 INFO L225 Difference]: With dead ends: 5850 [2022-11-18 20:55:42,129 INFO L226 Difference]: Without dead ends: 5819 [2022-11-18 20:55:42,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:55:42,133 INFO L413 NwaCegarLoop]: 1597 mSDtfsCounter, 744 mSDsluCounter, 8973 mSDsCounter, 0 mSdLazyCounter, 8944 mSolverCounterSat, 348 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 945 SdHoareTripleChecker+Valid, 10570 SdHoareTripleChecker+Invalid, 9294 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 8944 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.9s IncrementalHoareTripleChecker+Time [2022-11-18 20:55:42,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [945 Valid, 10570 Invalid, 9294 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [348 Valid, 8944 Invalid, 2 Unknown, 0 Unchecked, 17.9s Time] [2022-11-18 20:55:42,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5819 states. [2022-11-18 20:55:42,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5819 to 5314. [2022-11-18 20:55:42,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5314 states, 3657 states have (on average 1.3893902105550997) internal successors, (5081), 3758 states have internal predecessors, (5081), 1415 states have call successors, (1415), 236 states have call predecessors, (1415), 241 states have return successors, (1418), 1378 states have call predecessors, (1418), 1405 states have call successors, (1418) [2022-11-18 20:55:42,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5314 states to 5314 states and 7914 transitions. [2022-11-18 20:55:42,824 INFO L78 Accepts]: Start accepts. Automaton has 5314 states and 7914 transitions. Word has length 58 [2022-11-18 20:55:42,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:55:42,825 INFO L495 AbstractCegarLoop]: Abstraction has 5314 states and 7914 transitions. [2022-11-18 20:55:42,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 7 states have internal predecessors, (49), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:55:42,825 INFO L276 IsEmpty]: Start isEmpty. Operand 5314 states and 7914 transitions. [2022-11-18 20:55:42,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:55:42,827 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:55:42,827 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:55:42,828 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 20:55:42,828 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:55:42,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:55:42,828 INFO L85 PathProgramCache]: Analyzing trace with hash 624856806, now seen corresponding path program 1 times [2022-11-18 20:55:42,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:55:42,829 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127707248] [2022-11-18 20:55:42,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:55:42,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:55:42,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:55:43,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:55:43,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 20:55:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:55:43,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:55:43,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:55:43,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:55:43,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127707248] [2022-11-18 20:55:43,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127707248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:55:43,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:55:43,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:55:43,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263902977] [2022-11-18 20:55:43,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:55:43,185 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:55:43,185 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:55:43,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:55:43,186 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:55:43,186 INFO L87 Difference]: Start difference. First operand 5314 states and 7914 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:55:46,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:48,781 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:55:55,584 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:01,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:01,585 INFO L93 Difference]: Finished difference Result 6029 states and 9067 transitions. [2022-11-18 20:56:01,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:56:01,585 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 65 [2022-11-18 20:56:01,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:01,604 INFO L225 Difference]: With dead ends: 6029 [2022-11-18 20:56:01,605 INFO L226 Difference]: Without dead ends: 5991 [2022-11-18 20:56:01,608 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:56:01,609 INFO L413 NwaCegarLoop]: 1183 mSDtfsCounter, 1192 mSDsluCounter, 4564 mSDsCounter, 0 mSdLazyCounter, 7219 mSolverCounterSat, 379 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 16.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1500 SdHoareTripleChecker+Valid, 5747 SdHoareTripleChecker+Invalid, 7601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 379 IncrementalHoareTripleChecker+Valid, 7219 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:01,610 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1500 Valid, 5747 Invalid, 7601 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [379 Valid, 7219 Invalid, 3 Unknown, 0 Unchecked, 17.3s Time] [2022-11-18 20:56:01,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5991 states. [2022-11-18 20:56:02,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5991 to 5305. [2022-11-18 20:56:02,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5305 states, 3650 states have (on average 1.39013698630137) internal successors, (5074), 3752 states have internal predecessors, (5074), 1414 states have call successors, (1414), 236 states have call predecessors, (1414), 240 states have return successors, (1415), 1375 states have call predecessors, (1415), 1404 states have call successors, (1415) [2022-11-18 20:56:02,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5305 states to 5305 states and 7903 transitions. [2022-11-18 20:56:02,343 INFO L78 Accepts]: Start accepts. Automaton has 5305 states and 7903 transitions. Word has length 65 [2022-11-18 20:56:02,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:02,344 INFO L495 AbstractCegarLoop]: Abstraction has 5305 states and 7903 transitions. [2022-11-18 20:56:02,344 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 20:56:02,344 INFO L276 IsEmpty]: Start isEmpty. Operand 5305 states and 7903 transitions. [2022-11-18 20:56:02,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2022-11-18 20:56:02,345 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:02,345 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:02,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2022-11-18 20:56:02,345 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:02,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:02,346 INFO L85 PathProgramCache]: Analyzing trace with hash -552250409, now seen corresponding path program 1 times [2022-11-18 20:56:02,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:02,346 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1929164182] [2022-11-18 20:56:02,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:02,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:02,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 20:56:02,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:02,761 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:56:02,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:02,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1929164182] [2022-11-18 20:56:02,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1929164182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:02,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:02,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:56:02,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679214209] [2022-11-18 20:56:02,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:02,763 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:56:02,763 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:02,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:56:02,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:56:02,764 INFO L87 Difference]: Start difference. First operand 5305 states and 7903 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:06,510 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:08,639 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:14,800 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:22,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:22,853 INFO L93 Difference]: Finished difference Result 5835 states and 8754 transitions. [2022-11-18 20:56:22,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:56:22,853 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 59 [2022-11-18 20:56:22,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:22,872 INFO L225 Difference]: With dead ends: 5835 [2022-11-18 20:56:22,872 INFO L226 Difference]: Without dead ends: 5795 [2022-11-18 20:56:22,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:56:22,876 INFO L413 NwaCegarLoop]: 1586 mSDtfsCounter, 743 mSDsluCounter, 8914 mSDsCounter, 0 mSdLazyCounter, 8905 mSolverCounterSat, 346 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 944 SdHoareTripleChecker+Valid, 10500 SdHoareTripleChecker+Invalid, 9254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 8905 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:22,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [944 Valid, 10500 Invalid, 9254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [346 Valid, 8905 Invalid, 3 Unknown, 0 Unchecked, 18.8s Time] [2022-11-18 20:56:22,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5795 states. [2022-11-18 20:56:23,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5795 to 5290. [2022-11-18 20:56:23,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5290 states, 3636 states have (on average 1.391089108910891) internal successors, (5058), 3738 states have internal predecessors, (5058), 1413 states have call successors, (1413), 236 states have call predecessors, (1413), 240 states have return successors, (1414), 1374 states have call predecessors, (1414), 1403 states have call successors, (1414) [2022-11-18 20:56:23,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5290 states to 5290 states and 7885 transitions. [2022-11-18 20:56:23,439 INFO L78 Accepts]: Start accepts. Automaton has 5290 states and 7885 transitions. Word has length 59 [2022-11-18 20:56:23,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:23,439 INFO L495 AbstractCegarLoop]: Abstraction has 5290 states and 7885 transitions. [2022-11-18 20:56:23,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 7 states have internal predecessors, (50), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-11-18 20:56:23,440 INFO L276 IsEmpty]: Start isEmpty. Operand 5290 states and 7885 transitions. [2022-11-18 20:56:23,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:56:23,442 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:23,442 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:23,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-11-18 20:56:23,443 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:23,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:23,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1067154499, now seen corresponding path program 1 times [2022-11-18 20:56:23,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:23,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1805088391] [2022-11-18 20:56:23,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:23,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:24,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:56:24,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:24,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:56:24,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:24,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:56:24,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:24,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 20:56:24,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:24,831 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:56:24,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:24,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1805088391] [2022-11-18 20:56:24,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1805088391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:24,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:24,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:56:24,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121722774] [2022-11-18 20:56:24,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:24,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:56:24,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:24,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:56:24,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:56:24,834 INFO L87 Difference]: Start difference. First operand 5290 states and 7885 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:56:28,100 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:34,153 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:38,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:56:38,507 INFO L93 Difference]: Finished difference Result 6023 states and 9063 transitions. [2022-11-18 20:56:38,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:56:38,508 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 66 [2022-11-18 20:56:38,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:56:38,522 INFO L225 Difference]: With dead ends: 6023 [2022-11-18 20:56:38,523 INFO L226 Difference]: Without dead ends: 6019 [2022-11-18 20:56:38,524 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:56:38,525 INFO L413 NwaCegarLoop]: 1425 mSDtfsCounter, 3426 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1735 mSolverCounterSat, 1877 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3605 SdHoareTripleChecker+Valid, 2383 SdHoareTripleChecker+Invalid, 3614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1877 IncrementalHoareTripleChecker+Valid, 1735 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:56:38,525 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3605 Valid, 2383 Invalid, 3614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1877 Valid, 1735 Invalid, 2 Unknown, 0 Unchecked, 12.5s Time] [2022-11-18 20:56:38,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6019 states. [2022-11-18 20:56:39,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6019 to 5288. [2022-11-18 20:56:39,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5288 states, 3636 states have (on average 1.3905390539053906) internal successors, (5056), 3736 states have internal predecessors, (5056), 1411 states have call successors, (1411), 236 states have call predecessors, (1411), 240 states have return successors, (1414), 1374 states have call predecessors, (1414), 1403 states have call successors, (1414) [2022-11-18 20:56:39,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5288 states to 5288 states and 7881 transitions. [2022-11-18 20:56:39,077 INFO L78 Accepts]: Start accepts. Automaton has 5288 states and 7881 transitions. Word has length 66 [2022-11-18 20:56:39,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:56:39,077 INFO L495 AbstractCegarLoop]: Abstraction has 5288 states and 7881 transitions. [2022-11-18 20:56:39,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:56:39,077 INFO L276 IsEmpty]: Start isEmpty. Operand 5288 states and 7881 transitions. [2022-11-18 20:56:39,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-18 20:56:39,078 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:56:39,079 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:56:39,079 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-11-18 20:56:39,079 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:56:39,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:56:39,079 INFO L85 PathProgramCache]: Analyzing trace with hash 950672339, now seen corresponding path program 1 times [2022-11-18 20:56:39,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:56:39,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39099594] [2022-11-18 20:56:39,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:56:39,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:56:39,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-11-18 20:56:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:39,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:56:39,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:39,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 20:56:39,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:39,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 20:56:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:39,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-11-18 20:56:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:56:39,827 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:56:39,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:56:39,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39099594] [2022-11-18 20:56:39,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39099594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:56:39,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:56:39,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-18 20:56:39,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11834862] [2022-11-18 20:56:39,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:56:39,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:56:39,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:56:39,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:56:39,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:56:39,830 INFO L87 Difference]: Start difference. First operand 5288 states and 7881 transitions. Second operand has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:56:44,069 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.72s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:56:46,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:04,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:04,782 INFO L93 Difference]: Finished difference Result 6036 states and 9081 transitions. [2022-11-18 20:57:04,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-18 20:57:04,783 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) Word has length 67 [2022-11-18 20:57:04,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:04,798 INFO L225 Difference]: With dead ends: 6036 [2022-11-18 20:57:04,798 INFO L226 Difference]: Without dead ends: 5994 [2022-11-18 20:57:04,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2022-11-18 20:57:04,802 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 2549 mSDsluCounter, 9352 mSDsCounter, 0 mSdLazyCounter, 14934 mSolverCounterSat, 1699 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2859 SdHoareTripleChecker+Valid, 10469 SdHoareTripleChecker+Invalid, 16634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1699 IncrementalHoareTripleChecker+Valid, 14934 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:04,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2859 Valid, 10469 Invalid, 16634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1699 Valid, 14934 Invalid, 1 Unknown, 0 Unchecked, 23.3s Time] [2022-11-18 20:57:04,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5994 states. [2022-11-18 20:57:05,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5994 to 5273. [2022-11-18 20:57:05,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5273 states, 3626 states have (on average 1.3913403199117484) internal successors, (5045), 3726 states have internal predecessors, (5045), 1407 states have call successors, (1407), 235 states have call predecessors, (1407), 239 states have return successors, (1410), 1370 states have call predecessors, (1410), 1399 states have call successors, (1410) [2022-11-18 20:57:05,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5273 states to 5273 states and 7862 transitions. [2022-11-18 20:57:05,409 INFO L78 Accepts]: Start accepts. Automaton has 5273 states and 7862 transitions. Word has length 67 [2022-11-18 20:57:05,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:05,409 INFO L495 AbstractCegarLoop]: Abstraction has 5273 states and 7862 transitions. [2022-11-18 20:57:05,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 3.8461538461538463) internal successors, (50), 8 states have internal predecessors, (50), 3 states have call successors, (6), 5 states have call predecessors, (6), 3 states have return successors, (5), 3 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:57:05,410 INFO L276 IsEmpty]: Start isEmpty. Operand 5273 states and 7862 transitions. [2022-11-18 20:57:05,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:57:05,411 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:05,411 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:05,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-11-18 20:57:05,412 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:05,412 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:05,412 INFO L85 PathProgramCache]: Analyzing trace with hash -1484628002, now seen corresponding path program 1 times [2022-11-18 20:57:05,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:05,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441225451] [2022-11-18 20:57:05,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:05,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 20:57:05,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:05,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 20:57:05,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 20:57:05,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-11-18 20:57:05,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:05,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:57:05,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:05,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441225451] [2022-11-18 20:57:05,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441225451] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:05,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:05,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:57:05,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836665932] [2022-11-18 20:57:05,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:05,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:57:05,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:05,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:57:05,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:57:05,675 INFO L87 Difference]: Start difference. First operand 5273 states and 7862 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:57:09,534 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:11,597 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:16,565 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:20,582 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:30,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:30,962 INFO L93 Difference]: Finished difference Result 8744 states and 13166 transitions. [2022-11-18 20:57:30,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:57:30,962 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 72 [2022-11-18 20:57:30,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:30,990 INFO L225 Difference]: With dead ends: 8744 [2022-11-18 20:57:30,991 INFO L226 Difference]: Without dead ends: 8630 [2022-11-18 20:57:30,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:57:30,994 INFO L413 NwaCegarLoop]: 1689 mSDtfsCounter, 3100 mSDsluCounter, 3108 mSDsCounter, 0 mSdLazyCounter, 5789 mSolverCounterSat, 2531 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3264 SdHoareTripleChecker+Valid, 4797 SdHoareTripleChecker+Invalid, 8324 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2531 IncrementalHoareTripleChecker+Valid, 5789 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 23.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:30,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3264 Valid, 4797 Invalid, 8324 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2531 Valid, 5789 Invalid, 4 Unknown, 0 Unchecked, 23.3s Time] [2022-11-18 20:57:31,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8630 states. [2022-11-18 20:57:31,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8630 to 6365. [2022-11-18 20:57:31,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6365 states, 4354 states have (on average 1.394120349104272) internal successors, (6070), 4476 states have internal predecessors, (6070), 1724 states have call successors, (1724), 279 states have call predecessors, (1724), 286 states have return successors, (1730), 1680 states have call predecessors, (1730), 1716 states have call successors, (1730) [2022-11-18 20:57:31,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6365 states to 6365 states and 9524 transitions. [2022-11-18 20:57:31,803 INFO L78 Accepts]: Start accepts. Automaton has 6365 states and 9524 transitions. Word has length 72 [2022-11-18 20:57:31,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:31,803 INFO L495 AbstractCegarLoop]: Abstraction has 6365 states and 9524 transitions. [2022-11-18 20:57:31,804 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 3 states have call successors, (7), 5 states have call predecessors, (7), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:57:31,804 INFO L276 IsEmpty]: Start isEmpty. Operand 6365 states and 9524 transitions. [2022-11-18 20:57:31,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:57:31,806 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:31,806 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:31,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-11-18 20:57:31,807 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:31,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:31,807 INFO L85 PathProgramCache]: Analyzing trace with hash -2127878776, now seen corresponding path program 1 times [2022-11-18 20:57:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:31,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220643970] [2022-11-18 20:57:31,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:31,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:31,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:57:32,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:57:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:32,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 20:57:32,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:32,194 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:57:32,194 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:32,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220643970] [2022-11-18 20:57:32,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220643970] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:32,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:32,195 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:57:32,195 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815945429] [2022-11-18 20:57:32,195 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:32,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:57:32,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:32,196 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:57:32,196 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:57:32,196 INFO L87 Difference]: Start difference. First operand 6365 states and 9524 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:57:35,829 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:37,904 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:47,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:57:47,094 INFO L93 Difference]: Finished difference Result 7249 states and 10951 transitions. [2022-11-18 20:57:47,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:57:47,094 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 73 [2022-11-18 20:57:47,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:57:47,114 INFO L225 Difference]: With dead ends: 7249 [2022-11-18 20:57:47,114 INFO L226 Difference]: Without dead ends: 7206 [2022-11-18 20:57:47,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:57:47,118 INFO L413 NwaCegarLoop]: 1149 mSDtfsCounter, 1879 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 6703 mSolverCounterSat, 1001 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2191 SdHoareTripleChecker+Valid, 4948 SdHoareTripleChecker+Invalid, 7706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1001 IncrementalHoareTripleChecker+Valid, 6703 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:57:47,118 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2191 Valid, 4948 Invalid, 7706 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1001 Valid, 6703 Invalid, 2 Unknown, 0 Unchecked, 13.4s Time] [2022-11-18 20:57:47,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7206 states. [2022-11-18 20:57:47,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7206 to 6364. [2022-11-18 20:57:47,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6364 states, 4353 states have (on average 1.390535263036986) internal successors, (6053), 4475 states have internal predecessors, (6053), 1724 states have call successors, (1724), 279 states have call predecessors, (1724), 286 states have return successors, (1730), 1680 states have call predecessors, (1730), 1716 states have call successors, (1730) [2022-11-18 20:57:47,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6364 states to 6364 states and 9507 transitions. [2022-11-18 20:57:47,999 INFO L78 Accepts]: Start accepts. Automaton has 6364 states and 9507 transitions. Word has length 73 [2022-11-18 20:57:48,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:57:48,000 INFO L495 AbstractCegarLoop]: Abstraction has 6364 states and 9507 transitions. [2022-11-18 20:57:48,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 5 states have internal predecessors, (58), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:57:48,000 INFO L276 IsEmpty]: Start isEmpty. Operand 6364 states and 9507 transitions. [2022-11-18 20:57:48,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:57:48,001 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:57:48,002 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:57:48,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-11-18 20:57:48,002 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:57:48,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:57:48,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1568524179, now seen corresponding path program 1 times [2022-11-18 20:57:48,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:57:48,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101283703] [2022-11-18 20:57:48,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:57:48,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:57:48,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:48,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:57:48,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:48,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:57:48,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:57:48,388 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:57:48,388 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:57:48,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101283703] [2022-11-18 20:57:48,389 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101283703] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:57:48,389 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:57:48,390 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:57:48,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065661525] [2022-11-18 20:57:48,390 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:57:48,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:57:48,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:57:48,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:57:48,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:57:48,394 INFO L87 Difference]: Start difference. First operand 6364 states and 9507 transitions. Second operand has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:57:52,097 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:54,409 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:57:56,421 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:01,453 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:08,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:08,367 INFO L93 Difference]: Finished difference Result 7341 states and 11050 transitions. [2022-11-18 20:58:08,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:58:08,368 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 72 [2022-11-18 20:58:08,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:08,395 INFO L225 Difference]: With dead ends: 7341 [2022-11-18 20:58:08,395 INFO L226 Difference]: Without dead ends: 7299 [2022-11-18 20:58:08,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:58:08,400 INFO L413 NwaCegarLoop]: 1477 mSDtfsCounter, 867 mSDsluCounter, 4332 mSDsCounter, 0 mSdLazyCounter, 5901 mSolverCounterSat, 371 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1083 SdHoareTripleChecker+Valid, 5809 SdHoareTripleChecker+Invalid, 6276 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 371 IncrementalHoareTripleChecker+Valid, 5901 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 18.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:08,400 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1083 Valid, 5809 Invalid, 6276 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [371 Valid, 5901 Invalid, 4 Unknown, 0 Unchecked, 18.5s Time] [2022-11-18 20:58:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7299 states. [2022-11-18 20:58:09,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7299 to 6366. [2022-11-18 20:58:09,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6366 states, 4355 states have (on average 1.3903559127439724) internal successors, (6055), 4477 states have internal predecessors, (6055), 1724 states have call successors, (1724), 279 states have call predecessors, (1724), 286 states have return successors, (1730), 1680 states have call predecessors, (1730), 1716 states have call successors, (1730) [2022-11-18 20:58:09,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6366 states to 6366 states and 9509 transitions. [2022-11-18 20:58:09,188 INFO L78 Accepts]: Start accepts. Automaton has 6366 states and 9509 transitions. Word has length 72 [2022-11-18 20:58:09,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:09,189 INFO L495 AbstractCegarLoop]: Abstraction has 6366 states and 9509 transitions. [2022-11-18 20:58:09,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.166666666666666) internal successors, (61), 5 states have internal predecessors, (61), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:58:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 6366 states and 9509 transitions. [2022-11-18 20:58:09,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:58:09,191 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:09,191 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:09,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-11-18 20:58:09,191 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:09,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:09,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1072063850, now seen corresponding path program 1 times [2022-11-18 20:58:09,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:09,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945084551] [2022-11-18 20:58:09,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:09,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:09,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:09,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:58:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:09,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:09,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:09,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:58:09,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:09,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:58:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:09,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 20:58:09,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:09,586 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:58:09,586 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:09,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945084551] [2022-11-18 20:58:09,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945084551] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:09,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:09,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:58:09,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105179862] [2022-11-18 20:58:09,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:09,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:58:09,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:09,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:58:09,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:58:09,589 INFO L87 Difference]: Start difference. First operand 6366 states and 9509 transitions. Second operand has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:58:15,050 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:16,996 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.94s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:19,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:21,068 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:23,073 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:31,290 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.83s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:33,297 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:47,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:58:47,335 INFO L93 Difference]: Finished difference Result 8095 states and 12195 transitions. [2022-11-18 20:58:47,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:58:47,335 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 75 [2022-11-18 20:58:47,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:58:47,351 INFO L225 Difference]: With dead ends: 8095 [2022-11-18 20:58:47,351 INFO L226 Difference]: Without dead ends: 5784 [2022-11-18 20:58:47,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:58:47,357 INFO L413 NwaCegarLoop]: 1678 mSDtfsCounter, 5067 mSDsluCounter, 3409 mSDsCounter, 0 mSdLazyCounter, 7858 mSolverCounterSat, 3360 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 34.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5315 SdHoareTripleChecker+Valid, 5087 SdHoareTripleChecker+Invalid, 11223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3360 IncrementalHoareTripleChecker+Valid, 7858 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 36.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:58:47,357 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5315 Valid, 5087 Invalid, 11223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3360 Valid, 7858 Invalid, 5 Unknown, 0 Unchecked, 36.1s Time] [2022-11-18 20:58:47,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5784 states. [2022-11-18 20:58:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5784 to 4798. [2022-11-18 20:58:47,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 3264 states have (on average 1.3799019607843137) internal successors, (4504), 3351 states have internal predecessors, (4504), 1307 states have call successors, (1307), 221 states have call predecessors, (1307), 226 states have return successors, (1308), 1276 states have call predecessors, (1308), 1299 states have call successors, (1308) [2022-11-18 20:58:47,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 7119 transitions. [2022-11-18 20:58:47,980 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 7119 transitions. Word has length 75 [2022-11-18 20:58:47,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:58:47,980 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 7119 transitions. [2022-11-18 20:58:47,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.142857142857142) internal successors, (57), 4 states have internal predecessors, (57), 3 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:58:47,981 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 7119 transitions. [2022-11-18 20:58:47,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:58:47,984 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:58:47,984 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:58:47,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2022-11-18 20:58:47,984 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:58:47,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:58:47,985 INFO L85 PathProgramCache]: Analyzing trace with hash -143117755, now seen corresponding path program 1 times [2022-11-18 20:58:47,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:58:47,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [661650340] [2022-11-18 20:58:47,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:58:47,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:58:48,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:48,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 20:58:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:58:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:48,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 20:58:48,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:58:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:48,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-18 20:58:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:58:48,256 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:58:48,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:58:48,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [661650340] [2022-11-18 20:58:48,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [661650340] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:58:48,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:58:48,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:58:48,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1737860462] [2022-11-18 20:58:48,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:58:48,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:58:48,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:58:48,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:58:48,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:58:48,259 INFO L87 Difference]: Start difference. First operand 4798 states and 7119 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:58:51,412 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:53,418 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:55,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:58:57,471 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:03,962 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:05,967 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:12,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:12,066 INFO L93 Difference]: Finished difference Result 7641 states and 11439 transitions. [2022-11-18 20:59:12,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:59:12,067 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 77 [2022-11-18 20:59:12,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:12,077 INFO L225 Difference]: With dead ends: 7641 [2022-11-18 20:59:12,078 INFO L226 Difference]: Without dead ends: 4215 [2022-11-18 20:59:12,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:59:12,086 INFO L413 NwaCegarLoop]: 1091 mSDtfsCounter, 2890 mSDsluCounter, 1968 mSDsCounter, 0 mSdLazyCounter, 3374 mSolverCounterSat, 1474 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 21.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3031 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 4853 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1474 IncrementalHoareTripleChecker+Valid, 3374 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:12,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3031 Valid, 3059 Invalid, 4853 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1474 Valid, 3374 Invalid, 5 Unknown, 0 Unchecked, 22.7s Time] [2022-11-18 20:59:12,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4215 states. [2022-11-18 20:59:12,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4215 to 3665. [2022-11-18 20:59:12,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 2504 states have (on average 1.3702076677316295) internal successors, (3431), 2569 states have internal predecessors, (3431), 984 states have call successors, (984), 174 states have call predecessors, (984), 176 states have return successors, (981), 960 states have call predecessors, (981), 976 states have call successors, (981) [2022-11-18 20:59:12,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 5396 transitions. [2022-11-18 20:59:12,600 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 5396 transitions. Word has length 77 [2022-11-18 20:59:12,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:12,601 INFO L495 AbstractCegarLoop]: Abstraction has 3665 states and 5396 transitions. [2022-11-18 20:59:12,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (8), 6 states have call predecessors, (8), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:59:12,601 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 5396 transitions. [2022-11-18 20:59:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-18 20:59:12,604 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:12,604 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:12,604 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-11-18 20:59:12,605 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:12,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:12,605 INFO L85 PathProgramCache]: Analyzing trace with hash -1671964657, now seen corresponding path program 1 times [2022-11-18 20:59:12,605 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:12,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908586449] [2022-11-18 20:59:12,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:12,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:12,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:59:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:12,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:12,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 20:59:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:12,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-11-18 20:59:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:12,955 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:59:12,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:12,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908586449] [2022-11-18 20:59:12,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908586449] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:12,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:12,956 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:59:12,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910609176] [2022-11-18 20:59:12,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:12,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:59:12,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:12,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:59:12,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:59:12,958 INFO L87 Difference]: Start difference. First operand 3665 states and 5396 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:59:16,934 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:18,938 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:21,004 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:23,008 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:28,181 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:35,949 INFO L93 Difference]: Finished difference Result 4175 states and 6214 transitions. [2022-11-18 20:59:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:59:35,950 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 76 [2022-11-18 20:59:35,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:35,962 INFO L225 Difference]: With dead ends: 4175 [2022-11-18 20:59:35,962 INFO L226 Difference]: Without dead ends: 4143 [2022-11-18 20:59:35,964 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:59:35,965 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 1171 mSDsluCounter, 4283 mSDsCounter, 0 mSdLazyCounter, 7138 mSolverCounterSat, 370 mSolverCounterUnsat, 5 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 20.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1478 SdHoareTripleChecker+Valid, 5407 SdHoareTripleChecker+Invalid, 7513 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 370 IncrementalHoareTripleChecker+Valid, 7138 IncrementalHoareTripleChecker+Invalid, 5 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 21.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:35,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1478 Valid, 5407 Invalid, 7513 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [370 Valid, 7138 Invalid, 5 Unknown, 0 Unchecked, 21.7s Time] [2022-11-18 20:59:35,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4143 states. [2022-11-18 20:59:36,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4143 to 3665. [2022-11-18 20:59:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3665 states, 2504 states have (on average 1.3690095846645367) internal successors, (3428), 2569 states have internal predecessors, (3428), 984 states have call successors, (984), 174 states have call predecessors, (984), 176 states have return successors, (981), 960 states have call predecessors, (981), 976 states have call successors, (981) [2022-11-18 20:59:36,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3665 states to 3665 states and 5393 transitions. [2022-11-18 20:59:36,489 INFO L78 Accepts]: Start accepts. Automaton has 3665 states and 5393 transitions. Word has length 76 [2022-11-18 20:59:36,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:36,489 INFO L495 AbstractCegarLoop]: Abstraction has 3665 states and 5393 transitions. [2022-11-18 20:59:36,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 5 states have internal predecessors, (61), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:59:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 3665 states and 5393 transitions. [2022-11-18 20:59:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:59:36,491 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:36,491 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:36,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-11-18 20:59:36,491 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:36,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:36,491 INFO L85 PathProgramCache]: Analyzing trace with hash 347512473, now seen corresponding path program 1 times [2022-11-18 20:59:36,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:36,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310376423] [2022-11-18 20:59:36,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:36,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:36,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:36,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:59:36,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:36,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:36,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:36,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:59:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:36,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-11-18 20:59:36,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:36,895 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:59:36,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:36,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310376423] [2022-11-18 20:59:36,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310376423] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:36,896 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:36,897 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:59:36,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742122850] [2022-11-18 20:59:36,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:36,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:59:36,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:36,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:59:36,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:59:36,898 INFO L87 Difference]: Start difference. First operand 3665 states and 5393 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:59:46,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:46,407 INFO L93 Difference]: Finished difference Result 4205 states and 6250 transitions. [2022-11-18 20:59:46,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:59:46,408 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 77 [2022-11-18 20:59:46,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:46,420 INFO L225 Difference]: With dead ends: 4205 [2022-11-18 20:59:46,420 INFO L226 Difference]: Without dead ends: 3825 [2022-11-18 20:59:46,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:59:46,423 INFO L413 NwaCegarLoop]: 1124 mSDtfsCounter, 1916 mSDsluCounter, 3745 mSDsCounter, 0 mSdLazyCounter, 6624 mSolverCounterSat, 994 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 4869 SdHoareTripleChecker+Invalid, 7618 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 994 IncrementalHoareTripleChecker+Valid, 6624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:46,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2230 Valid, 4869 Invalid, 7618 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [994 Valid, 6624 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-11-18 20:59:46,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3825 states. [2022-11-18 20:59:46,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3825 to 3331. [2022-11-18 20:59:46,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3331 states, 2314 states have (on average 1.366464995678479) internal successors, (3162), 2375 states have internal predecessors, (3162), 845 states have call successors, (845), 169 states have call predecessors, (845), 171 states have return successors, (842), 822 states have call predecessors, (842), 837 states have call successors, (842) [2022-11-18 20:59:46,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3331 states to 3331 states and 4849 transitions. [2022-11-18 20:59:46,963 INFO L78 Accepts]: Start accepts. Automaton has 3331 states and 4849 transitions. Word has length 77 [2022-11-18 20:59:46,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:46,964 INFO L495 AbstractCegarLoop]: Abstraction has 3331 states and 4849 transitions. [2022-11-18 20:59:46,964 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 5 states have internal predecessors, (62), 3 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2022-11-18 20:59:46,964 INFO L276 IsEmpty]: Start isEmpty. Operand 3331 states and 4849 transitions. [2022-11-18 20:59:46,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-11-18 20:59:46,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:46,966 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:46,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2022-11-18 20:59:46,966 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:46,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:46,967 INFO L85 PathProgramCache]: Analyzing trace with hash 537684313, now seen corresponding path program 1 times [2022-11-18 20:59:46,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:46,967 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123459760] [2022-11-18 20:59:46,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:46,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:59:47,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 20:59:47,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:59:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:59:47,292 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 20:59:47,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:59:47,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123459760] [2022-11-18 20:59:47,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123459760] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:59:47,293 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:59:47,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:59:47,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24798925] [2022-11-18 20:59:47,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:59:47,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:59:47,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:59:47,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:59:47,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:59:47,295 INFO L87 Difference]: Start difference. First operand 3331 states and 4849 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:59:53,675 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.60s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 20:59:59,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:59:59,557 INFO L93 Difference]: Finished difference Result 3924 states and 5762 transitions. [2022-11-18 20:59:59,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 20:59:59,558 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 75 [2022-11-18 20:59:59,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:59:59,568 INFO L225 Difference]: With dead ends: 3924 [2022-11-18 20:59:59,568 INFO L226 Difference]: Without dead ends: 3839 [2022-11-18 20:59:59,569 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:59:59,570 INFO L413 NwaCegarLoop]: 1343 mSDtfsCounter, 848 mSDsluCounter, 3936 mSDsCounter, 0 mSdLazyCounter, 5745 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 5279 SdHoareTripleChecker+Invalid, 6076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 5745 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:59:59,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 5279 Invalid, 6076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [331 Valid, 5745 Invalid, 0 Unknown, 0 Unchecked, 11.2s Time] [2022-11-18 20:59:59,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3839 states. [2022-11-18 20:59:59,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3839 to 3334. [2022-11-18 20:59:59,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3334 states, 2317 states have (on average 1.3659905049633145) internal successors, (3165), 2378 states have internal predecessors, (3165), 845 states have call successors, (845), 169 states have call predecessors, (845), 171 states have return successors, (842), 822 states have call predecessors, (842), 837 states have call successors, (842) [2022-11-18 20:59:59,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3334 states to 3334 states and 4852 transitions. [2022-11-18 20:59:59,985 INFO L78 Accepts]: Start accepts. Automaton has 3334 states and 4852 transitions. Word has length 75 [2022-11-18 20:59:59,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:59:59,986 INFO L495 AbstractCegarLoop]: Abstraction has 3334 states and 4852 transitions. [2022-11-18 20:59:59,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 20:59:59,986 INFO L276 IsEmpty]: Start isEmpty. Operand 3334 states and 4852 transitions. [2022-11-18 20:59:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:59:59,987 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:59:59,987 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:59:59,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2022-11-18 20:59:59,988 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:59:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:59:59,988 INFO L85 PathProgramCache]: Analyzing trace with hash -261432832, now seen corresponding path program 1 times [2022-11-18 20:59:59,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:59:59,988 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110935867] [2022-11-18 20:59:59,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:59:59,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:00,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:00:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 21:00:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 21:00:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 21:00:00,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 21:00:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:00,226 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:00:00,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:00,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110935867] [2022-11-18 21:00:00,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110935867] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:00,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:00,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:00:00,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356941370] [2022-11-18 21:00:00,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:00,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:00:00,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:00,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:00:00,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:00:00,228 INFO L87 Difference]: Start difference. First operand 3334 states and 4852 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:00:07,157 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:00:12,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:12,408 INFO L93 Difference]: Finished difference Result 3869 states and 5694 transitions. [2022-11-18 21:00:12,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:00:12,408 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) Word has length 77 [2022-11-18 21:00:12,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:12,420 INFO L225 Difference]: With dead ends: 3869 [2022-11-18 21:00:12,420 INFO L226 Difference]: Without dead ends: 3823 [2022-11-18 21:00:12,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:00:12,423 INFO L413 NwaCegarLoop]: 1014 mSDtfsCounter, 1717 mSDsluCounter, 2130 mSDsCounter, 0 mSdLazyCounter, 3779 mSolverCounterSat, 1283 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1820 SdHoareTripleChecker+Valid, 3144 SdHoareTripleChecker+Invalid, 5063 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1283 IncrementalHoareTripleChecker+Valid, 3779 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:12,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1820 Valid, 3144 Invalid, 5063 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1283 Valid, 3779 Invalid, 1 Unknown, 0 Unchecked, 11.2s Time] [2022-11-18 21:00:12,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3823 states. [2022-11-18 21:00:12,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3823 to 3339. [2022-11-18 21:00:12,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3339 states, 2320 states have (on average 1.3655172413793104) internal successors, (3168), 2381 states have internal predecessors, (3168), 847 states have call successors, (847), 169 states have call predecessors, (847), 171 states have return successors, (844), 824 states have call predecessors, (844), 839 states have call successors, (844) [2022-11-18 21:00:12,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3339 states to 3339 states and 4859 transitions. [2022-11-18 21:00:12,908 INFO L78 Accepts]: Start accepts. Automaton has 3339 states and 4859 transitions. Word has length 77 [2022-11-18 21:00:12,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:12,909 INFO L495 AbstractCegarLoop]: Abstraction has 3339 states and 4859 transitions. [2022-11-18 21:00:12,909 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 3 states have call predecessors, (6), 3 states have call successors, (6) [2022-11-18 21:00:12,909 INFO L276 IsEmpty]: Start isEmpty. Operand 3339 states and 4859 transitions. [2022-11-18 21:00:12,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 21:00:12,910 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:12,911 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:12,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2022-11-18 21:00:12,911 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:12,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:12,911 INFO L85 PathProgramCache]: Analyzing trace with hash 755872698, now seen corresponding path program 1 times [2022-11-18 21:00:12,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:12,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123451124] [2022-11-18 21:00:12,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:12,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:13,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 21:00:13,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:13,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:13,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 21:00:13,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:13,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-11-18 21:00:13,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:13,136 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:00:13,136 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:13,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123451124] [2022-11-18 21:00:13,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123451124] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:13,136 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:13,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:00:13,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875785674] [2022-11-18 21:00:13,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:13,137 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:00:13,137 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:13,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:00:13,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:00:13,138 INFO L87 Difference]: Start difference. First operand 3339 states and 4859 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:00:18,628 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.30s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:00:23,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:23,638 INFO L93 Difference]: Finished difference Result 3836 states and 5653 transitions. [2022-11-18 21:00:23,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:00:23,638 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 78 [2022-11-18 21:00:23,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:23,648 INFO L225 Difference]: With dead ends: 3836 [2022-11-18 21:00:23,648 INFO L226 Difference]: Without dead ends: 3784 [2022-11-18 21:00:23,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:00:23,650 INFO L413 NwaCegarLoop]: 1338 mSDtfsCounter, 1422 mSDsluCounter, 1967 mSDsCounter, 0 mSdLazyCounter, 2911 mSolverCounterSat, 984 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 3305 SdHoareTripleChecker+Invalid, 3895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 984 IncrementalHoareTripleChecker+Valid, 2911 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:23,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 3305 Invalid, 3895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [984 Valid, 2911 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-11-18 21:00:23,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3784 states. [2022-11-18 21:00:24,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3784 to 3307. [2022-11-18 21:00:24,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3307 states, 2292 states have (on average 1.3634380453752182) internal successors, (3125), 2352 states have internal predecessors, (3125), 845 states have call successors, (845), 167 states have call predecessors, (845), 169 states have return successors, (842), 822 states have call predecessors, (842), 837 states have call successors, (842) [2022-11-18 21:00:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3307 states to 3307 states and 4812 transitions. [2022-11-18 21:00:24,126 INFO L78 Accepts]: Start accepts. Automaton has 3307 states and 4812 transitions. Word has length 78 [2022-11-18 21:00:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:24,126 INFO L495 AbstractCegarLoop]: Abstraction has 3307 states and 4812 transitions. [2022-11-18 21:00:24,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (5), 4 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2022-11-18 21:00:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 3307 states and 4812 transitions. [2022-11-18 21:00:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 21:00:24,128 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:24,128 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:24,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2022-11-18 21:00:24,128 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:24,128 INFO L85 PathProgramCache]: Analyzing trace with hash -401687835, now seen corresponding path program 1 times [2022-11-18 21:00:24,129 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:24,129 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387711398] [2022-11-18 21:00:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:24,129 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:24,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:00:24,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:24,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 21:00:24,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 21:00:24,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 21:00:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-11-18 21:00:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:24,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:00:24,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:24,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387711398] [2022-11-18 21:00:24,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387711398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:24,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:24,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 21:00:24,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941746443] [2022-11-18 21:00:24,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:24,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 21:00:24,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:24,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 21:00:24,559 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:00:24,559 INFO L87 Difference]: Start difference. First operand 3307 states and 4812 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:00:26,911 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:00:32,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:00:41,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:41,634 INFO L93 Difference]: Finished difference Result 4032 states and 5987 transitions. [2022-11-18 21:00:41,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 21:00:41,635 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2022-11-18 21:00:41,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:41,647 INFO L225 Difference]: With dead ends: 4032 [2022-11-18 21:00:41,647 INFO L226 Difference]: Without dead ends: 3931 [2022-11-18 21:00:41,650 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 21:00:41,650 INFO L413 NwaCegarLoop]: 1002 mSDtfsCounter, 2345 mSDsluCounter, 3938 mSDsCounter, 0 mSdLazyCounter, 7012 mSolverCounterSat, 2046 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2441 SdHoareTripleChecker+Valid, 4940 SdHoareTripleChecker+Invalid, 9059 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2046 IncrementalHoareTripleChecker+Valid, 7012 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:41,651 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2441 Valid, 4940 Invalid, 9059 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2046 Valid, 7012 Invalid, 1 Unknown, 0 Unchecked, 15.8s Time] [2022-11-18 21:00:41,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3931 states. [2022-11-18 21:00:42,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3931 to 3282. [2022-11-18 21:00:42,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3282 states, 2273 states have (on average 1.363396392432908) internal successors, (3099), 2332 states have internal predecessors, (3099), 842 states have call successors, (842), 165 states have call predecessors, (842), 166 states have return successors, (839), 819 states have call predecessors, (839), 835 states have call successors, (839) [2022-11-18 21:00:42,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3282 states to 3282 states and 4780 transitions. [2022-11-18 21:00:42,205 INFO L78 Accepts]: Start accepts. Automaton has 3282 states and 4780 transitions. Word has length 79 [2022-11-18 21:00:42,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:42,205 INFO L495 AbstractCegarLoop]: Abstraction has 3282 states and 4780 transitions. [2022-11-18 21:00:42,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (8), 5 states have call predecessors, (8), 2 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:00:42,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3282 states and 4780 transitions. [2022-11-18 21:00:42,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-11-18 21:00:42,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:42,207 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:42,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2022-11-18 21:00:42,207 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:42,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:42,208 INFO L85 PathProgramCache]: Analyzing trace with hash 362742866, now seen corresponding path program 1 times [2022-11-18 21:00:42,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:42,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167094664] [2022-11-18 21:00:42,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:42,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:00:42,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:42,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 21:00:42,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-11-18 21:00:42,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:00:42,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:00:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:42,580 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:00:42,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:42,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167094664] [2022-11-18 21:00:42,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167094664] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:42,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:42,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:00:42,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12875226] [2022-11-18 21:00:42,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:42,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:00:42,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:42,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:00:42,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:00:42,582 INFO L87 Difference]: Start difference. First operand 3282 states and 4780 transitions. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:00:50,091 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:00:58,814 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:00:58,814 INFO L93 Difference]: Finished difference Result 3902 states and 5729 transitions. [2022-11-18 21:00:58,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 21:00:58,814 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 78 [2022-11-18 21:00:58,815 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:00:58,825 INFO L225 Difference]: With dead ends: 3902 [2022-11-18 21:00:58,825 INFO L226 Difference]: Without dead ends: 3747 [2022-11-18 21:00:58,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-11-18 21:00:58,828 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 1738 mSDsluCounter, 3985 mSDsCounter, 0 mSdLazyCounter, 6834 mSolverCounterSat, 1271 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1833 SdHoareTripleChecker+Valid, 5021 SdHoareTripleChecker+Invalid, 8106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1271 IncrementalHoareTripleChecker+Valid, 6834 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.9s IncrementalHoareTripleChecker+Time [2022-11-18 21:00:58,828 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1833 Valid, 5021 Invalid, 8106 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1271 Valid, 6834 Invalid, 1 Unknown, 0 Unchecked, 14.9s Time] [2022-11-18 21:00:58,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3747 states. [2022-11-18 21:00:59,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3747 to 3272. [2022-11-18 21:00:59,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3272 states, 2267 states have (on average 1.3634759594177326) internal successors, (3091), 2326 states have internal predecessors, (3091), 838 states have call successors, (838), 165 states have call predecessors, (838), 166 states have return successors, (835), 815 states have call predecessors, (835), 831 states have call successors, (835) [2022-11-18 21:00:59,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3272 states to 3272 states and 4764 transitions. [2022-11-18 21:00:59,453 INFO L78 Accepts]: Start accepts. Automaton has 3272 states and 4764 transitions. Word has length 78 [2022-11-18 21:00:59,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:00:59,454 INFO L495 AbstractCegarLoop]: Abstraction has 3272 states and 4764 transitions. [2022-11-18 21:00:59,454 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 5 states have internal predecessors, (59), 3 states have call successors, (7), 4 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:00:59,454 INFO L276 IsEmpty]: Start isEmpty. Operand 3272 states and 4764 transitions. [2022-11-18 21:00:59,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 21:00:59,457 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:00:59,457 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:00:59,457 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2022-11-18 21:00:59,458 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:00:59,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:00:59,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1553536717, now seen corresponding path program 1 times [2022-11-18 21:00:59,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:00:59,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222181244] [2022-11-18 21:00:59,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:00:59,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:00:59,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:59,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 21:00:59,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:59,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:00:59,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:00:59,859 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:00:59,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:00:59,859 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222181244] [2022-11-18 21:00:59,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222181244] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:00:59,860 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:00:59,860 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 21:00:59,860 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [795272523] [2022-11-18 21:00:59,860 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:00:59,861 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 21:00:59,861 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:00:59,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 21:00:59,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 21:00:59,861 INFO L87 Difference]: Start difference. First operand 3272 states and 4764 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:01:07,570 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:01:14,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:14,619 INFO L93 Difference]: Finished difference Result 3896 states and 5717 transitions. [2022-11-18 21:01:14,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-18 21:01:14,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 77 [2022-11-18 21:01:14,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:14,633 INFO L225 Difference]: With dead ends: 3896 [2022-11-18 21:01:14,633 INFO L226 Difference]: Without dead ends: 3811 [2022-11-18 21:01:14,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 21:01:14,636 INFO L413 NwaCegarLoop]: 1330 mSDtfsCounter, 873 mSDsluCounter, 3929 mSDsCounter, 0 mSdLazyCounter, 5751 mSolverCounterSat, 328 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1094 SdHoareTripleChecker+Valid, 5259 SdHoareTripleChecker+Invalid, 6080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 5751 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.5s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:14,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1094 Valid, 5259 Invalid, 6080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [328 Valid, 5751 Invalid, 1 Unknown, 0 Unchecked, 13.5s Time] [2022-11-18 21:01:14,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3811 states. [2022-11-18 21:01:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3811 to 3273. [2022-11-18 21:01:15,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3273 states, 2268 states have (on average 1.36331569664903) internal successors, (3092), 2327 states have internal predecessors, (3092), 838 states have call successors, (838), 165 states have call predecessors, (838), 166 states have return successors, (835), 815 states have call predecessors, (835), 831 states have call successors, (835) [2022-11-18 21:01:15,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 4765 transitions. [2022-11-18 21:01:15,168 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 4765 transitions. Word has length 77 [2022-11-18 21:01:15,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:15,169 INFO L495 AbstractCegarLoop]: Abstraction has 3273 states and 4765 transitions. [2022-11-18 21:01:15,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2022-11-18 21:01:15,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 4765 transitions. [2022-11-18 21:01:15,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-11-18 21:01:15,172 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:15,172 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:15,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2022-11-18 21:01:15,172 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:15,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:15,173 INFO L85 PathProgramCache]: Analyzing trace with hash 122046385, now seen corresponding path program 1 times [2022-11-18 21:01:15,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:15,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350102500] [2022-11-18 21:01:15,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:15,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 21:01:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:15,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-11-18 21:01:15,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-11-18 21:01:15,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 21:01:15,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 21:01:15,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:15,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:01:15,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:15,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350102500] [2022-11-18 21:01:15,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350102500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:15,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:15,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 21:01:15,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816799939] [2022-11-18 21:01:15,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:15,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 21:01:15,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:15,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 21:01:15,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:15,618 INFO L87 Difference]: Start difference. First operand 3273 states and 4765 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 21:01:22,482 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:01:28,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:28,579 INFO L93 Difference]: Finished difference Result 6002 states and 8940 transitions. [2022-11-18 21:01:28,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 21:01:28,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) Word has length 82 [2022-11-18 21:01:28,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:28,588 INFO L225 Difference]: With dead ends: 6002 [2022-11-18 21:01:28,588 INFO L226 Difference]: Without dead ends: 3746 [2022-11-18 21:01:28,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-18 21:01:28,593 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 3201 mSDsluCounter, 2760 mSDsCounter, 0 mSdLazyCounter, 4023 mSolverCounterSat, 2882 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3202 SdHoareTripleChecker+Valid, 3714 SdHoareTripleChecker+Invalid, 6906 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2882 IncrementalHoareTripleChecker+Valid, 4023 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:28,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3202 Valid, 3714 Invalid, 6906 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2882 Valid, 4023 Invalid, 1 Unknown, 0 Unchecked, 11.7s Time] [2022-11-18 21:01:28,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3746 states. [2022-11-18 21:01:29,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3746 to 3271. [2022-11-18 21:01:29,028 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3271 states, 2267 states have (on average 1.3621526246140274) internal successors, (3088), 2325 states have internal predecessors, (3088), 837 states have call successors, (837), 165 states have call predecessors, (837), 166 states have return successors, (835), 815 states have call predecessors, (835), 831 states have call successors, (835) [2022-11-18 21:01:29,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3271 states to 3271 states and 4760 transitions. [2022-11-18 21:01:29,036 INFO L78 Accepts]: Start accepts. Automaton has 3271 states and 4760 transitions. Word has length 82 [2022-11-18 21:01:29,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:29,037 INFO L495 AbstractCegarLoop]: Abstraction has 3271 states and 4760 transitions. [2022-11-18 21:01:29,037 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 3 states have internal predecessors, (61), 2 states have call successors, (9), 6 states have call predecessors, (9), 2 states have return successors, (6), 2 states have call predecessors, (6), 1 states have call successors, (6) [2022-11-18 21:01:29,037 INFO L276 IsEmpty]: Start isEmpty. Operand 3271 states and 4760 transitions. [2022-11-18 21:01:29,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 21:01:29,040 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:29,040 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:29,040 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2022-11-18 21:01:29,041 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:29,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:29,041 INFO L85 PathProgramCache]: Analyzing trace with hash -2059172899, now seen corresponding path program 1 times [2022-11-18 21:01:29,041 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:29,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688585619] [2022-11-18 21:01:29,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:29,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:29,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-18 21:01:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:29,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 21:01:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-11-18 21:01:29,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-11-18 21:01:29,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-11-18 21:01:29,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:29,341 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:01:29,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:29,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688585619] [2022-11-18 21:01:29,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688585619] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:29,342 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:29,342 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 21:01:29,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262694046] [2022-11-18 21:01:29,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:29,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 21:01:29,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:29,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 21:01:29,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:01:29,344 INFO L87 Difference]: Start difference. First operand 3271 states and 4760 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:01:38,084 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.96s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:01:40,344 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.91s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:01:50,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:01:50,298 INFO L93 Difference]: Finished difference Result 5294 states and 7951 transitions. [2022-11-18 21:01:50,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 21:01:50,299 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 79 [2022-11-18 21:01:50,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:01:50,312 INFO L225 Difference]: With dead ends: 5294 [2022-11-18 21:01:50,312 INFO L226 Difference]: Without dead ends: 5286 [2022-11-18 21:01:50,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-11-18 21:01:50,315 INFO L413 NwaCegarLoop]: 2053 mSDtfsCounter, 2830 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 1972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 17.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3184 SdHoareTripleChecker+Valid, 4570 SdHoareTripleChecker+Invalid, 6437 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1972 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 19.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:01:50,315 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3184 Valid, 4570 Invalid, 6437 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1972 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 19.2s Time] [2022-11-18 21:01:50,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5286 states. [2022-11-18 21:01:50,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5286 to 3297. [2022-11-18 21:01:50,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3297 states, 2289 states have (on average 1.361293141109655) internal successors, (3116), 2348 states have internal predecessors, (3116), 839 states have call successors, (839), 167 states have call predecessors, (839), 168 states have return successors, (837), 817 states have call predecessors, (837), 833 states have call successors, (837) [2022-11-18 21:01:50,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3297 states to 3297 states and 4792 transitions. [2022-11-18 21:01:50,836 INFO L78 Accepts]: Start accepts. Automaton has 3297 states and 4792 transitions. Word has length 79 [2022-11-18 21:01:50,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:01:50,836 INFO L495 AbstractCegarLoop]: Abstraction has 3297 states and 4792 transitions. [2022-11-18 21:01:50,836 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 3 states have internal predecessors, (60), 3 states have call successors, (7), 4 states have call predecessors, (7), 2 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2022-11-18 21:01:50,836 INFO L276 IsEmpty]: Start isEmpty. Operand 3297 states and 4792 transitions. [2022-11-18 21:01:50,838 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-18 21:01:50,838 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:01:50,839 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:01:50,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2022-11-18 21:01:50,839 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:01:50,839 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:01:50,839 INFO L85 PathProgramCache]: Analyzing trace with hash 2007471389, now seen corresponding path program 1 times [2022-11-18 21:01:50,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:01:50,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362850401] [2022-11-18 21:01:50,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:01:50,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:01:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 21:01:51,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:01:51,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-11-18 21:01:51,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:01:51,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:01:51,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:01:51,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362850401] [2022-11-18 21:01:51,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362850401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:01:51,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:01:51,047 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 21:01:51,047 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535453005] [2022-11-18 21:01:51,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:01:51,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 21:01:51,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:01:51,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 21:01:51,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 21:01:51,048 INFO L87 Difference]: Start difference. First operand 3297 states and 4792 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:01:57,806 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:02:02,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:02,429 INFO L93 Difference]: Finished difference Result 5072 states and 7462 transitions. [2022-11-18 21:02:02,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 21:02:02,429 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 79 [2022-11-18 21:02:02,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:02,438 INFO L225 Difference]: With dead ends: 5072 [2022-11-18 21:02:02,438 INFO L226 Difference]: Without dead ends: 3735 [2022-11-18 21:02:02,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-18 21:02:02,441 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 2540 mSDsluCounter, 490 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 1116 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2679 SdHoareTripleChecker+Valid, 1718 SdHoareTripleChecker+Invalid, 3024 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1116 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.2s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:02,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2679 Valid, 1718 Invalid, 3024 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1116 Valid, 1907 Invalid, 1 Unknown, 0 Unchecked, 10.2s Time] [2022-11-18 21:02:02,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3735 states. [2022-11-18 21:02:02,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3735 to 3260. [2022-11-18 21:02:02,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3260 states, 2269 states have (on average 1.360951961216395) internal successors, (3088), 2328 states have internal predecessors, (3088), 825 states have call successors, (825), 164 states have call predecessors, (825), 165 states have return successors, (823), 803 states have call predecessors, (823), 819 states have call successors, (823) [2022-11-18 21:02:02,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3260 states to 3260 states and 4736 transitions. [2022-11-18 21:02:02,919 INFO L78 Accepts]: Start accepts. Automaton has 3260 states and 4736 transitions. Word has length 79 [2022-11-18 21:02:02,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:02,920 INFO L495 AbstractCegarLoop]: Abstraction has 3260 states and 4736 transitions. [2022-11-18 21:02:02,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 3 states have internal predecessors, (66), 3 states have call successors, (4), 3 states have call predecessors, (4), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-11-18 21:02:02,920 INFO L276 IsEmpty]: Start isEmpty. Operand 3260 states and 4736 transitions. [2022-11-18 21:02:02,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 21:02:02,921 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:02,922 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:02,922 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2022-11-18 21:02:02,922 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:02,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:02,922 INFO L85 PathProgramCache]: Analyzing trace with hash 1504590018, now seen corresponding path program 1 times [2022-11-18 21:02:02,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:02,922 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518625984] [2022-11-18 21:02:02,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:02,923 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:03,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 21:02:03,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:03,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 21:02:03,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:03,559 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:02:03,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:03,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518625984] [2022-11-18 21:02:03,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518625984] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:03,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:03,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 21:02:03,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842601879] [2022-11-18 21:02:03,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:03,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:02:03,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:03,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:02:03,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:02:03,561 INFO L87 Difference]: Start difference. First operand 3260 states and 4736 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:02:14,671 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:02:16,680 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:02:32,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:02:32,653 INFO L93 Difference]: Finished difference Result 3936 states and 5852 transitions. [2022-11-18 21:02:32,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:02:32,653 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2022-11-18 21:02:32,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:02:32,663 INFO L225 Difference]: With dead ends: 3936 [2022-11-18 21:02:32,663 INFO L226 Difference]: Without dead ends: 3905 [2022-11-18 21:02:32,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:02:32,666 INFO L413 NwaCegarLoop]: 1275 mSDtfsCounter, 1286 mSDsluCounter, 11867 mSDsCounter, 0 mSdLazyCounter, 15955 mSolverCounterSat, 1336 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 25.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 13142 SdHoareTripleChecker+Invalid, 17293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1336 IncrementalHoareTripleChecker+Valid, 15955 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 27.3s IncrementalHoareTripleChecker+Time [2022-11-18 21:02:32,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 13142 Invalid, 17293 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1336 Valid, 15955 Invalid, 2 Unknown, 0 Unchecked, 27.3s Time] [2022-11-18 21:02:32,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3905 states. [2022-11-18 21:02:33,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3905 to 3256. [2022-11-18 21:02:33,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3256 states, 2266 states have (on average 1.3609885260370698) internal successors, (3084), 2325 states have internal predecessors, (3084), 824 states have call successors, (824), 164 states have call predecessors, (824), 165 states have return successors, (822), 802 states have call predecessors, (822), 818 states have call successors, (822) [2022-11-18 21:02:33,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3256 states to 3256 states and 4730 transitions. [2022-11-18 21:02:33,223 INFO L78 Accepts]: Start accepts. Automaton has 3256 states and 4730 transitions. Word has length 87 [2022-11-18 21:02:33,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:02:33,223 INFO L495 AbstractCegarLoop]: Abstraction has 3256 states and 4730 transitions. [2022-11-18 21:02:33,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:02:33,224 INFO L276 IsEmpty]: Start isEmpty. Operand 3256 states and 4730 transitions. [2022-11-18 21:02:33,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-18 21:02:33,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:02:33,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:02:33,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2022-11-18 21:02:33,226 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:02:33,226 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:02:33,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1177692468, now seen corresponding path program 1 times [2022-11-18 21:02:33,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:02:33,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [134449278] [2022-11-18 21:02:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:02:33,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:02:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-11-18 21:02:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 21:02:33,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-18 21:02:33,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-11-18 21:02:33,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 21:02:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 21:02:33,949 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 21:02:33,949 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 21:02:33,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [134449278] [2022-11-18 21:02:33,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [134449278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 21:02:33,950 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 21:02:33,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 21:02:33,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1329469082] [2022-11-18 21:02:33,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 21:02:33,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 21:02:33,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 21:02:33,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 21:02:33,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2022-11-18 21:02:33,952 INFO L87 Difference]: Start difference. First operand 3256 states and 4730 transitions. Second operand has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:02:45,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:02:47,192 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-11-18 21:03:02,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 21:03:02,524 INFO L93 Difference]: Finished difference Result 3932 states and 5846 transitions. [2022-11-18 21:03:02,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 21:03:02,524 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) Word has length 87 [2022-11-18 21:03:02,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 21:03:02,535 INFO L225 Difference]: With dead ends: 3932 [2022-11-18 21:03:02,535 INFO L226 Difference]: Without dead ends: 3899 [2022-11-18 21:03:02,538 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-11-18 21:03:02,538 INFO L413 NwaCegarLoop]: 1253 mSDtfsCounter, 1286 mSDsluCounter, 11651 mSDsCounter, 0 mSdLazyCounter, 15928 mSolverCounterSat, 1342 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 24.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1316 SdHoareTripleChecker+Valid, 12904 SdHoareTripleChecker+Invalid, 17272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 1342 IncrementalHoareTripleChecker+Valid, 15928 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.8s IncrementalHoareTripleChecker+Time [2022-11-18 21:03:02,538 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1316 Valid, 12904 Invalid, 17272 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [1342 Valid, 15928 Invalid, 2 Unknown, 0 Unchecked, 26.8s Time] [2022-11-18 21:03:02,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3899 states. [2022-11-18 21:03:03,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3899 to 3250. [2022-11-18 21:03:03,167 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3250 states, 2261 states have (on average 1.3609022556390977) internal successors, (3077), 2320 states have internal predecessors, (3077), 823 states have call successors, (823), 164 states have call predecessors, (823), 165 states have return successors, (821), 801 states have call predecessors, (821), 817 states have call successors, (821) [2022-11-18 21:03:03,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3250 states to 3250 states and 4721 transitions. [2022-11-18 21:03:03,176 INFO L78 Accepts]: Start accepts. Automaton has 3250 states and 4721 transitions. Word has length 87 [2022-11-18 21:03:03,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 21:03:03,176 INFO L495 AbstractCegarLoop]: Abstraction has 3250 states and 4721 transitions. [2022-11-18 21:03:03,177 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.0) internal successors, (70), 10 states have internal predecessors, (70), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (5), 4 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 21:03:03,177 INFO L276 IsEmpty]: Start isEmpty. Operand 3250 states and 4721 transitions. [2022-11-18 21:03:03,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-18 21:03:03,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 21:03:03,180 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 21:03:03,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2022-11-18 21:03:03,180 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION === [errorFnErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 21:03:03,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 21:03:03,180 INFO L85 PathProgramCache]: Analyzing trace with hash -507978994, now seen corresponding path program 1 times [2022-11-18 21:03:03,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 21:03:03,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188203957] [2022-11-18 21:03:03,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 21:03:03,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 21:03:03,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat