./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.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_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/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_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/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_5af4a351-1cd3-4698-bcca-2c9d7109728b/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 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec --- 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 18:49:28,905 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 18:49:28,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 18:49:28,943 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 18:49:28,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 18:49:28,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 18:49:28,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 18:49:28,957 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 18:49:28,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 18:49:28,965 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 18:49:28,966 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 18:49:28,968 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 18:49:28,968 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 18:49:28,971 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 18:49:28,973 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 18:49:28,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 18:49:28,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 18:49:28,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 18:49:28,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 18:49:28,986 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 18:49:28,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 18:49:28,988 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 18:49:28,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 18:49:28,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 18:49:28,999 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 18:49:29,000 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 18:49:29,000 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 18:49:29,002 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 18:49:29,002 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 18:49:29,003 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 18:49:29,004 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 18:49:29,005 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 18:49:29,007 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 18:49:29,008 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 18:49:29,009 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 18:49:29,009 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 18:49:29,010 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 18:49:29,010 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 18:49:29,010 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 18:49:29,012 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 18:49:29,012 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 18:49:29,013 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 18:49:29,040 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 18:49:29,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 18:49:29,040 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 18:49:29,041 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 18:49:29,041 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 18:49:29,041 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 18:49:29,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 18:49:29,042 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 18:49:29,042 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 18:49:29,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 18:49:29,043 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 18:49:29,043 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 18:49:29,043 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 18:49:29,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 18:49:29,044 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 18:49:29,044 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 18:49:29,044 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 18:49:29,044 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 18:49:29,045 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 18:49:29,045 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 18:49:29,045 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 18:49:29,045 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 18:49:29,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 18:49:29,046 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 18:49:29,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:29,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 18:49:29,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 18:49:29,047 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 18:49:29,047 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 18:49:29,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 18:49:29,047 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 18:49:29,047 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 18:49:29,048 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 18:49:29,048 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_5af4a351-1cd3-4698-bcca-2c9d7109728b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec [2022-11-18 18:49:29,342 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 18:49:29,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 18:49:29,364 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 18:49:29,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 18:49:29,369 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 18:49:29,370 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2022-11-18 18:49:29,443 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/data/335b38ca3/03ded372895f47e8b8f9fd47ba3818b4/FLAGc6152fead [2022-11-18 18:49:30,065 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 18:49:30,066 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2022-11-18 18:49:30,086 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/data/335b38ca3/03ded372895f47e8b8f9fd47ba3818b4/FLAGc6152fead [2022-11-18 18:49:30,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/data/335b38ca3/03ded372895f47e8b8f9fd47ba3818b4 [2022-11-18 18:49:30,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 18:49:30,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 18:49:30,289 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:30,290 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 18:49:30,293 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 18:49:30,294 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:30" (1/1) ... [2022-11-18 18:49:30,296 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72da90d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:30, skipping insertion in model container [2022-11-18 18:49:30,296 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 06:49:30" (1/1) ... [2022-11-18 18:49:30,303 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 18:49:30,380 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 18:49:30,932 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_5af4a351-1cd3-4698-bcca-2c9d7109728b/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2022-11-18 18:49:30,961 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:30,970 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 18:49:31,063 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_5af4a351-1cd3-4698-bcca-2c9d7109728b/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2022-11-18 18:49:31,069 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 18:49:31,111 INFO L208 MainTranslator]: Completed translation [2022-11-18 18:49:31,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31 WrapperNode [2022-11-18 18:49:31,111 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 18:49:31,113 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:31,113 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 18:49:31,113 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 18:49:31,124 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,148 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,189 INFO L138 Inliner]: procedures = 91, calls = 334, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 846 [2022-11-18 18:49:31,190 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 18:49:31,190 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 18:49:31,190 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 18:49:31,191 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 18:49:31,203 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,203 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,208 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,208 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,231 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,263 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,267 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,285 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 18:49:31,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 18:49:31,291 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 18:49:31,291 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 18:49:31,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (1/1) ... [2022-11-18 18:49:31,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 18:49:31,311 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:49:31,327 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 18:49:31,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 18:49:31,373 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 18:49:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-18 18:49:31,374 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-18 18:49:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-18 18:49:31,374 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-18 18:49:31,374 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-18 18:49:31,375 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-18 18:49:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-18 18:49:31,375 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-18 18:49:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-18 18:49:31,375 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-18 18:49:31,375 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-18 18:49:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-18 18:49:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-18 18:49:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-18 18:49:31,376 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-18 18:49:31,376 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-18 18:49:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-18 18:49:31,377 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-18 18:49:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-18 18:49:31,377 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-18 18:49:31,377 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-18 18:49:31,378 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-18 18:49:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-18 18:49:31,378 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-18 18:49:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-18 18:49:31,378 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-18 18:49:31,378 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-18 18:49:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-18 18:49:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-18 18:49:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-18 18:49:31,379 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-18 18:49:31,379 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-18 18:49:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-18 18:49:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-18 18:49:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 18:49:31,380 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-18 18:49:31,380 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-18 18:49:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-18 18:49:31,381 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-18 18:49:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-18 18:49:31,381 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-18 18:49:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 18:49:31,381 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 18:49:31,381 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-18 18:49:31,382 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-18 18:49:31,572 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 18:49:31,574 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 18:49:32,826 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 18:49:32,846 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 18:49:32,846 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-18 18:49:32,850 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:32 BoogieIcfgContainer [2022-11-18 18:49:32,850 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 18:49:32,855 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 18:49:32,855 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 18:49:32,859 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 18:49:32,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 06:49:30" (1/3) ... [2022-11-18 18:49:32,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b149118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:32, skipping insertion in model container [2022-11-18 18:49:32,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 06:49:31" (2/3) ... [2022-11-18 18:49:32,862 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b149118 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 06:49:32, skipping insertion in model container [2022-11-18 18:49:32,862 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 06:49:32" (3/3) ... [2022-11-18 18:49:32,865 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product25.cil.c [2022-11-18 18:49:32,888 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 18:49:32,888 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 18:49:32,962 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 18:49:32,969 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;@388a8fb7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 18:49:32,969 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-18 18:49:32,975 INFO L276 IsEmpty]: Start isEmpty. Operand has 541 states, 430 states have (on average 1.7116279069767442) internal successors, (736), 451 states have internal predecessors, (736), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2022-11-18 18:49:32,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 18:49:32,997 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:32,998 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:32,998 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:33,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:33,004 INFO L85 PathProgramCache]: Analyzing trace with hash 1028654670, now seen corresponding path program 1 times [2022-11-18 18:49:33,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:33,013 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1078662774] [2022-11-18 18:49:33,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:33,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:49:33,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:33,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:33,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:33,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-11-18 18:49:33,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 18:49:34,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:34,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:34,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:49:34,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-18 18:49:34,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:34,385 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 18:49:34,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:34,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1078662774] [2022-11-18 18:49:34,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1078662774] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:34,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:34,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:49:34,389 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479662335] [2022-11-18 18:49:34,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:34,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:49:34,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:34,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:49:34,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:49:34,438 INFO L87 Difference]: Start difference. First operand has 541 states, 430 states have (on average 1.7116279069767442) internal successors, (736), 451 states have internal predecessors, (736), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:49:44,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:44,564 INFO L93 Difference]: Finished difference Result 1522 states and 2642 transitions. [2022-11-18 18:49:44,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 18:49:44,568 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-11-18 18:49:44,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:44,620 INFO L225 Difference]: With dead ends: 1522 [2022-11-18 18:49:44,620 INFO L226 Difference]: Without dead ends: 993 [2022-11-18 18:49:44,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-11-18 18:49:44,639 INFO L413 NwaCegarLoop]: 501 mSDtfsCounter, 1820 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 4866 mSolverCounterSat, 792 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1892 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 5658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 792 IncrementalHoareTripleChecker+Valid, 4866 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:44,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1892 Valid, 2855 Invalid, 5658 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [792 Valid, 4866 Invalid, 0 Unknown, 0 Unchecked, 8.2s Time] [2022-11-18 18:49:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 993 states. [2022-11-18 18:49:44,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 993 to 535. [2022-11-18 18:49:44,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 426 states have (on average 1.704225352112676) internal successors, (726), 445 states have internal predecessors, (726), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2022-11-18 18:49:44,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 897 transitions. [2022-11-18 18:49:44,920 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 897 transitions. Word has length 74 [2022-11-18 18:49:44,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:44,922 INFO L495 AbstractCegarLoop]: Abstraction has 535 states and 897 transitions. [2022-11-18 18:49:44,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:49:44,928 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 897 transitions. [2022-11-18 18:49:44,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-18 18:49:44,937 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:44,937 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:44,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 18:49:44,937 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:44,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:44,938 INFO L85 PathProgramCache]: Analyzing trace with hash -281406215, now seen corresponding path program 1 times [2022-11-18 18:49:44,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:44,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141438442] [2022-11-18 18:49:44,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:44,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:44,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:49:45,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:45,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:49:45,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:49:45,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:49:45,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:49:45,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:45,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 18:49:45,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:45,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141438442] [2022-11-18 18:49:45,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141438442] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:45,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:45,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:49:45,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57054178] [2022-11-18 18:49:45,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:45,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:49:45,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:45,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:49:45,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:49:45,607 INFO L87 Difference]: Start difference. First operand 535 states and 897 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:49:54,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:49:54,785 INFO L93 Difference]: Finished difference Result 1347 states and 2294 transitions. [2022-11-18 18:49:54,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:49:54,789 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-11-18 18:49:54,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:49:54,797 INFO L225 Difference]: With dead ends: 1347 [2022-11-18 18:49:54,797 INFO L226 Difference]: Without dead ends: 830 [2022-11-18 18:49:54,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:49:54,802 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 1033 mSDsluCounter, 3063 mSDsCounter, 0 mSdLazyCounter, 5486 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1103 SdHoareTripleChecker+Valid, 3592 SdHoareTripleChecker+Invalid, 5770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 5486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:49:54,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1103 Valid, 3592 Invalid, 5770 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [284 Valid, 5486 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-11-18 18:49:54,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 830 states. [2022-11-18 18:49:54,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 830 to 539. [2022-11-18 18:49:54,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 429 states have (on average 1.696969696969697) internal successors, (728), 448 states have internal predecessors, (728), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (85), 82 states have call predecessors, (85), 83 states have call successors, (85) [2022-11-18 18:49:54,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 901 transitions. [2022-11-18 18:49:54,944 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 901 transitions. Word has length 80 [2022-11-18 18:49:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:49:54,945 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 901 transitions. [2022-11-18 18:49:54,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-11-18 18:49:54,945 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 901 transitions. [2022-11-18 18:49:54,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-18 18:49:54,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:49:54,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:49:54,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 18:49:54,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:49:54,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:49:54,950 INFO L85 PathProgramCache]: Analyzing trace with hash 1212777519, now seen corresponding path program 1 times [2022-11-18 18:49:54,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:49:54,950 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835978305] [2022-11-18 18:49:54,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:49:54,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:49:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:49:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:55,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-11-18 18:49:55,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-11-18 18:49:55,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:55,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:49:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:49:55,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-11-18 18:49:55,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:49:55,552 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 18:49:55,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:49:55,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835978305] [2022-11-18 18:49:55,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835978305] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:49:55,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:49:55,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-18 18:49:55,555 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091023099] [2022-11-18 18:49:55,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:49:55,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 18:49:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:49:55,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 18:49:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:49:55,557 INFO L87 Difference]: Start difference. First operand 539 states and 901 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:50:14,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:14,151 INFO L93 Difference]: Finished difference Result 2506 states and 4409 transitions. [2022-11-18 18:50:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:50:14,152 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-11-18 18:50:14,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:14,169 INFO L225 Difference]: With dead ends: 2506 [2022-11-18 18:50:14,169 INFO L226 Difference]: Without dead ends: 1985 [2022-11-18 18:50:14,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-11-18 18:50:14,176 INFO L413 NwaCegarLoop]: 600 mSDtfsCounter, 3768 mSDsluCounter, 3766 mSDsCounter, 0 mSdLazyCounter, 8736 mSolverCounterSat, 1533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3846 SdHoareTripleChecker+Valid, 4366 SdHoareTripleChecker+Invalid, 10269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1533 IncrementalHoareTripleChecker+Valid, 8736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:14,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3846 Valid, 4366 Invalid, 10269 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1533 Valid, 8736 Invalid, 0 Unknown, 0 Unchecked, 14.6s Time] [2022-11-18 18:50:14,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-11-18 18:50:14,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1422. [2022-11-18 18:50:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1121 states have (on average 1.6565566458519179) internal successors, (1857), 1168 states have internal predecessors, (1857), 241 states have call successors, (241), 56 states have call predecessors, (241), 59 states have return successors, (275), 233 states have call predecessors, (275), 236 states have call successors, (275) [2022-11-18 18:50:14,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2373 transitions. [2022-11-18 18:50:14,606 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2373 transitions. Word has length 85 [2022-11-18 18:50:14,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:14,606 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2373 transitions. [2022-11-18 18:50:14,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 18:50:14,607 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2373 transitions. [2022-11-18 18:50:14,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-18 18:50:14,610 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:14,610 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 18:50:14,610 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 18:50:14,610 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:14,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:14,611 INFO L85 PathProgramCache]: Analyzing trace with hash -1206336703, now seen corresponding path program 1 times [2022-11-18 18:50:14,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:14,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [949799873] [2022-11-18 18:50:14,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:14,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:14,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:14,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:50:14,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:14,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:14,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:14,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 18:50:14,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-11-18 18:50:15,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:15,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:15,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:50:15,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:50:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 18:50:15,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:15,386 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 18:50:15,386 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:15,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [949799873] [2022-11-18 18:50:15,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [949799873] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:15,387 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:15,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 18:50:15,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295169434] [2022-11-18 18:50:15,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:15,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:50:15,388 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:15,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:50:15,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:50:15,389 INFO L87 Difference]: Start difference. First operand 1422 states and 2373 transitions. Second operand has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 18:50:32,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:32,121 INFO L93 Difference]: Finished difference Result 3637 states and 6225 transitions. [2022-11-18 18:50:32,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:50:32,124 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 94 [2022-11-18 18:50:32,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:32,139 INFO L225 Difference]: With dead ends: 3637 [2022-11-18 18:50:32,139 INFO L226 Difference]: Without dead ends: 2059 [2022-11-18 18:50:32,150 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=207, Invalid=723, Unknown=0, NotChecked=0, Total=930 [2022-11-18 18:50:32,151 INFO L413 NwaCegarLoop]: 488 mSDtfsCounter, 3146 mSDsluCounter, 4168 mSDsCounter, 0 mSdLazyCounter, 9262 mSolverCounterSat, 879 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3209 SdHoareTripleChecker+Valid, 4656 SdHoareTripleChecker+Invalid, 10141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 879 IncrementalHoareTripleChecker+Valid, 9262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:32,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3209 Valid, 4656 Invalid, 10141 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [879 Valid, 9262 Invalid, 0 Unknown, 0 Unchecked, 12.8s Time] [2022-11-18 18:50:32,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2059 states. [2022-11-18 18:50:32,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2059 to 1497. [2022-11-18 18:50:32,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1179 states have (on average 1.6276505513146735) internal successors, (1919), 1228 states have internal predecessors, (1919), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-11-18 18:50:32,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2468 transitions. [2022-11-18 18:50:32,645 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2468 transitions. Word has length 94 [2022-11-18 18:50:32,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:32,646 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 2468 transitions. [2022-11-18 18:50:32,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 5.357142857142857) internal successors, (75), 10 states have internal predecessors, (75), 4 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-18 18:50:32,646 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2468 transitions. [2022-11-18 18:50:32,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-18 18:50:32,656 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:32,656 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 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 18:50:32,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 18:50:32,657 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:32,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:32,659 INFO L85 PathProgramCache]: Analyzing trace with hash -1251011790, now seen corresponding path program 1 times [2022-11-18 18:50:32,659 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:32,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362091179] [2022-11-18 18:50:32,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:32,660 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:32,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:50:32,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:32,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:32,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:32,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-18 18:50:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-11-18 18:50:33,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:33,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:33,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:50:33,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:50:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:50:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:50:33,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:33,170 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:33,170 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:33,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362091179] [2022-11-18 18:50:33,171 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362091179] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:33,171 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:33,171 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:50:33,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1128158737] [2022-11-18 18:50:33,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:33,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:50:33,172 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:33,172 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:50:33,173 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:50:33,173 INFO L87 Difference]: Start difference. First operand 1497 states and 2468 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:50:40,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:40,376 INFO L93 Difference]: Finished difference Result 3516 states and 5927 transitions. [2022-11-18 18:50:40,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:50:40,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-11-18 18:50:40,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:40,391 INFO L225 Difference]: With dead ends: 3516 [2022-11-18 18:50:40,392 INFO L226 Difference]: Without dead ends: 2037 [2022-11-18 18:50:40,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:50:40,400 INFO L413 NwaCegarLoop]: 484 mSDtfsCounter, 961 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 2987 mSolverCounterSat, 247 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1033 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 3234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 247 IncrementalHoareTripleChecker+Valid, 2987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:40,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1033 Valid, 1884 Invalid, 3234 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [247 Valid, 2987 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-18 18:50:40,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2037 states. [2022-11-18 18:50:40,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2037 to 1497. [2022-11-18 18:50:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1497 states, 1179 states have (on average 1.626802374893978) internal successors, (1918), 1228 states have internal predecessors, (1918), 253 states have call successors, (253), 61 states have call predecessors, (253), 64 states have return successors, (296), 243 states have call predecessors, (296), 248 states have call successors, (296) [2022-11-18 18:50:40,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1497 states to 1497 states and 2467 transitions. [2022-11-18 18:50:40,883 INFO L78 Accepts]: Start accepts. Automaton has 1497 states and 2467 transitions. Word has length 97 [2022-11-18 18:50:40,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:40,884 INFO L495 AbstractCegarLoop]: Abstraction has 1497 states and 2467 transitions. [2022-11-18 18:50:40,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:50:40,886 INFO L276 IsEmpty]: Start isEmpty. Operand 1497 states and 2467 transitions. [2022-11-18 18:50:40,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-18 18:50:40,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:40,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 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 18:50:40,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 18:50:40,892 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:40,893 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:40,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1442450393, now seen corresponding path program 1 times [2022-11-18 18:50:40,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:40,895 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75423632] [2022-11-18 18:50:40,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:40,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:40,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:50:41,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:50:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-11-18 18:50:41,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:50:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:50:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:50:41,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:50:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:41,545 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:50:41,546 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:41,546 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75423632] [2022-11-18 18:50:41,546 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75423632] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:41,546 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:41,546 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:50:41,546 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [294385083] [2022-11-18 18:50:41,547 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:41,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:50:41,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:41,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:50:41,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:50:41,548 INFO L87 Difference]: Start difference. First operand 1497 states and 2467 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:50:51,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:51,136 INFO L93 Difference]: Finished difference Result 3616 states and 6194 transitions. [2022-11-18 18:50:51,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 18:50:51,136 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-11-18 18:50:51,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:51,153 INFO L225 Difference]: With dead ends: 3616 [2022-11-18 18:50:51,154 INFO L226 Difference]: Without dead ends: 2177 [2022-11-18 18:50:51,161 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-11-18 18:50:51,162 INFO L413 NwaCegarLoop]: 533 mSDtfsCounter, 2116 mSDsluCounter, 3986 mSDsCounter, 0 mSdLazyCounter, 6437 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2181 SdHoareTripleChecker+Valid, 4519 SdHoareTripleChecker+Invalid, 7069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 6437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:51,162 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2181 Valid, 4519 Invalid, 7069 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [632 Valid, 6437 Invalid, 0 Unknown, 0 Unchecked, 7.0s Time] [2022-11-18 18:50:51,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2177 states. [2022-11-18 18:50:51,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2177 to 1521. [2022-11-18 18:50:51,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.616288832913518) internal successors, (1925), 1248 states have internal predecessors, (1925), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:50:51,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2510 transitions. [2022-11-18 18:50:51,572 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2510 transitions. Word has length 98 [2022-11-18 18:50:51,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:51,573 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2510 transitions. [2022-11-18 18:50:51,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:50:51,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2510 transitions. [2022-11-18 18:50:51,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-11-18 18:50:51,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:51,577 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:51,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 18:50:51,578 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:51,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:51,578 INFO L85 PathProgramCache]: Analyzing trace with hash -1053096040, now seen corresponding path program 1 times [2022-11-18 18:50:51,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:51,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [66052715] [2022-11-18 18:50:51,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:51,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:51,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:50:51,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:51,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:50:51,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:51,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:50:51,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:51,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:52,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:52,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:52,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:50:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:52,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:50:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:50:52,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:52,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:50:52,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:52,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:52,037 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:52,037 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [66052715] [2022-11-18 18:50:52,037 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [66052715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:52,037 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:52,038 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:50:52,038 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392479696] [2022-11-18 18:50:52,038 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:52,038 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:50:52,039 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:52,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:50:52,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:50:52,039 INFO L87 Difference]: Start difference. First operand 1521 states and 2510 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:50:58,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:50:58,283 INFO L93 Difference]: Finished difference Result 3532 states and 5982 transitions. [2022-11-18 18:50:58,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:50:58,283 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-11-18 18:50:58,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:50:58,301 INFO L225 Difference]: With dead ends: 3532 [2022-11-18 18:50:58,302 INFO L226 Difference]: Without dead ends: 2069 [2022-11-18 18:50:58,309 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:50:58,310 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1868 mSDsluCounter, 1270 mSDsCounter, 0 mSdLazyCounter, 2613 mSolverCounterSat, 528 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1940 SdHoareTripleChecker+Valid, 1751 SdHoareTripleChecker+Invalid, 3141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 528 IncrementalHoareTripleChecker+Valid, 2613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:50:58,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1940 Valid, 1751 Invalid, 3141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [528 Valid, 2613 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 18:50:58,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-18 18:50:58,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1521. [2022-11-18 18:50:58,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.6120906801007557) internal successors, (1920), 1248 states have internal predecessors, (1920), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:50:58,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2505 transitions. [2022-11-18 18:50:58,805 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2505 transitions. Word has length 99 [2022-11-18 18:50:58,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:50:58,806 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2505 transitions. [2022-11-18 18:50:58,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:50:58,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2505 transitions. [2022-11-18 18:50:58,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-18 18:50:58,810 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:50:58,810 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:50:58,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 18:50:58,811 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:50:58,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:50:58,811 INFO L85 PathProgramCache]: Analyzing trace with hash -349147019, now seen corresponding path program 1 times [2022-11-18 18:50:58,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:50:58,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1212772841] [2022-11-18 18:50:58,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:50:58,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:50:58,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:58,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:50:58,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:50:59,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-11-18 18:50:59,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:59,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:50:59,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:50:59,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:50:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:50:59,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:50:59,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:50:59,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:50:59,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:50:59,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1212772841] [2022-11-18 18:50:59,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1212772841] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:50:59,306 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:50:59,306 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:50:59,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555832343] [2022-11-18 18:50:59,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:50:59,307 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:50:59,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:50:59,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:50:59,307 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:50:59,308 INFO L87 Difference]: Start difference. First operand 1521 states and 2505 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:05,711 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:05,712 INFO L93 Difference]: Finished difference Result 3532 states and 5977 transitions. [2022-11-18 18:51:05,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:51:05,712 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-11-18 18:51:05,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:05,727 INFO L225 Difference]: With dead ends: 3532 [2022-11-18 18:51:05,728 INFO L226 Difference]: Without dead ends: 2069 [2022-11-18 18:51:05,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:51:05,736 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1861 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 2591 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 3124 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 2591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:05,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 1742 Invalid, 3124 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [533 Valid, 2591 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-18 18:51:05,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-18 18:51:06,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1521. [2022-11-18 18:51:06,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.6078925272879934) internal successors, (1915), 1248 states have internal predecessors, (1915), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:51:06,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2500 transitions. [2022-11-18 18:51:06,325 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2500 transitions. Word has length 100 [2022-11-18 18:51:06,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:06,326 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2500 transitions. [2022-11-18 18:51:06,326 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:06,326 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2500 transitions. [2022-11-18 18:51:06,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 18:51:06,329 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:06,330 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:06,330 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 18:51:06,330 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:06,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:06,331 INFO L85 PathProgramCache]: Analyzing trace with hash -2078474029, now seen corresponding path program 1 times [2022-11-18 18:51:06,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:06,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [512894927] [2022-11-18 18:51:06,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:06,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:06,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:51:06,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:51:06,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 18:51:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:06,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:06,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:51:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:51:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:51:06,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:06,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:06,812 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:51:06,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:06,813 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [512894927] [2022-11-18 18:51:06,813 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [512894927] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:06,813 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:06,813 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:51:06,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898624604] [2022-11-18 18:51:06,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:06,814 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:51:06,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:06,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:51:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:51:06,816 INFO L87 Difference]: Start difference. First operand 1521 states and 2500 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:14,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:14,267 INFO L93 Difference]: Finished difference Result 3532 states and 5972 transitions. [2022-11-18 18:51:14,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:51:14,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-11-18 18:51:14,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:14,282 INFO L225 Difference]: With dead ends: 3532 [2022-11-18 18:51:14,283 INFO L226 Difference]: Without dead ends: 2069 [2022-11-18 18:51:14,289 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:51:14,290 INFO L413 NwaCegarLoop]: 481 mSDtfsCounter, 1055 mSDsluCounter, 1395 mSDsCounter, 0 mSdLazyCounter, 2824 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1127 SdHoareTripleChecker+Valid, 1876 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 2824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:14,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1127 Valid, 1876 Invalid, 3076 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [252 Valid, 2824 Invalid, 0 Unknown, 0 Unchecked, 6.2s Time] [2022-11-18 18:51:14,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-18 18:51:14,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1521. [2022-11-18 18:51:14,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1521 states, 1191 states have (on average 1.603694374475231) internal successors, (1910), 1248 states have internal predecessors, (1910), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:51:14,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1521 states to 1521 states and 2495 transitions. [2022-11-18 18:51:14,701 INFO L78 Accepts]: Start accepts. Automaton has 1521 states and 2495 transitions. Word has length 101 [2022-11-18 18:51:14,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:14,701 INFO L495 AbstractCegarLoop]: Abstraction has 1521 states and 2495 transitions. [2022-11-18 18:51:14,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:14,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1521 states and 2495 transitions. [2022-11-18 18:51:14,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-18 18:51:14,706 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:14,706 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:14,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 18:51:14,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:14,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:14,707 INFO L85 PathProgramCache]: Analyzing trace with hash 1399177746, now seen corresponding path program 1 times [2022-11-18 18:51:14,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:14,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879332992] [2022-11-18 18:51:14,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:14,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:14,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:14,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:51:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:14,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:14,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:51:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-11-18 18:51:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:15,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:51:15,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:51:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:51:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:15,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:15,230 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:51:15,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:15,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879332992] [2022-11-18 18:51:15,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879332992] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:15,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:15,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:51:15,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [313178687] [2022-11-18 18:51:15,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:15,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:51:15,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:15,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:51:15,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:51:15,233 INFO L87 Difference]: Start difference. First operand 1521 states and 2495 transitions. Second operand has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:51:24,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:24,698 INFO L93 Difference]: Finished difference Result 3555 states and 6001 transitions. [2022-11-18 18:51:24,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:51:24,699 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 101 [2022-11-18 18:51:24,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:24,715 INFO L225 Difference]: With dead ends: 3555 [2022-11-18 18:51:24,715 INFO L226 Difference]: Without dead ends: 2098 [2022-11-18 18:51:24,724 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:51:24,725 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 1029 mSDsluCounter, 2808 mSDsCounter, 0 mSdLazyCounter, 5130 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1102 SdHoareTripleChecker+Valid, 3290 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 5130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:24,725 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1102 Valid, 3290 Invalid, 5386 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [256 Valid, 5130 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-11-18 18:51:24,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2022-11-18 18:51:25,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1523. [2022-11-18 18:51:25,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1193 states have (on average 1.6026823134953898) internal successors, (1912), 1250 states have internal predecessors, (1912), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:51:25,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2497 transitions. [2022-11-18 18:51:25,209 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2497 transitions. Word has length 101 [2022-11-18 18:51:25,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:25,209 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2497 transitions. [2022-11-18 18:51:25,209 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.444444444444445) internal successors, (76), 6 states have internal predecessors, (76), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:51:25,209 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2497 transitions. [2022-11-18 18:51:25,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 18:51:25,213 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:25,213 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:25,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 18:51:25,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:25,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:25,214 INFO L85 PathProgramCache]: Analyzing trace with hash -1929946672, now seen corresponding path program 1 times [2022-11-18 18:51:25,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:25,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374984131] [2022-11-18 18:51:25,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:25,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:25,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:51:25,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:25,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:51:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:25,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:25,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:51:25,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:51:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:51:25,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:25,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:25,670 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:51:25,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:25,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374984131] [2022-11-18 18:51:25,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374984131] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:25,671 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:25,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:51:25,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519585587] [2022-11-18 18:51:25,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:25,673 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:51:25,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:25,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:51:25,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:51:25,675 INFO L87 Difference]: Start difference. First operand 1523 states and 2497 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:32,143 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:32,144 INFO L93 Difference]: Finished difference Result 3538 states and 5973 transitions. [2022-11-18 18:51:32,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 18:51:32,144 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-11-18 18:51:32,145 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:32,155 INFO L225 Difference]: With dead ends: 3538 [2022-11-18 18:51:32,155 INFO L226 Difference]: Without dead ends: 2073 [2022-11-18 18:51:32,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:51:32,163 INFO L413 NwaCegarLoop]: 478 mSDtfsCounter, 1861 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1933 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 3083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:32,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1933 Valid, 1742 Invalid, 3083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [532 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-11-18 18:51:32,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2073 states. [2022-11-18 18:51:32,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2073 to 1523. [2022-11-18 18:51:32,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1523 states, 1193 states have (on average 1.5984911986588433) internal successors, (1907), 1250 states have internal predecessors, (1907), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:51:32,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1523 states to 1523 states and 2492 transitions. [2022-11-18 18:51:32,643 INFO L78 Accepts]: Start accepts. Automaton has 1523 states and 2492 transitions. Word has length 102 [2022-11-18 18:51:32,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:32,643 INFO L495 AbstractCegarLoop]: Abstraction has 1523 states and 2492 transitions. [2022-11-18 18:51:32,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:32,644 INFO L276 IsEmpty]: Start isEmpty. Operand 1523 states and 2492 transitions. [2022-11-18 18:51:32,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-18 18:51:32,647 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:32,648 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:32,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 18:51:32,648 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:32,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:32,649 INFO L85 PathProgramCache]: Analyzing trace with hash -890026701, now seen corresponding path program 1 times [2022-11-18 18:51:32,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:32,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75594264] [2022-11-18 18:51:32,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:32,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:32,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:51:32,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:32,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:32,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:32,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:51:32,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:33,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:33,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:33,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:51:33,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:51:33,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:51:33,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:33,173 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:51:33,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:33,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75594264] [2022-11-18 18:51:33,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75594264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:33,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:33,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:51:33,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543615485] [2022-11-18 18:51:33,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:33,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:51:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:51:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:51:33,175 INFO L87 Difference]: Start difference. First operand 1523 states and 2492 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:51:41,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:41,435 INFO L93 Difference]: Finished difference Result 3559 states and 5998 transitions. [2022-11-18 18:51:41,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:51:41,436 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 102 [2022-11-18 18:51:41,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:41,448 INFO L225 Difference]: With dead ends: 3559 [2022-11-18 18:51:41,448 INFO L226 Difference]: Without dead ends: 2102 [2022-11-18 18:51:41,456 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:51:41,456 INFO L413 NwaCegarLoop]: 483 mSDtfsCounter, 1858 mSDsluCounter, 2699 mSDsCounter, 0 mSdLazyCounter, 4793 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1931 SdHoareTripleChecker+Valid, 3182 SdHoareTripleChecker+Invalid, 5335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 4793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:41,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1931 Valid, 3182 Invalid, 5335 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [542 Valid, 4793 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-18 18:51:41,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2022-11-18 18:51:41,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 1526. [2022-11-18 18:51:41,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1196 states have (on average 1.5969899665551839) internal successors, (1910), 1253 states have internal predecessors, (1910), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:51:41,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2495 transitions. [2022-11-18 18:51:41,934 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2495 transitions. Word has length 102 [2022-11-18 18:51:41,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:41,934 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2495 transitions. [2022-11-18 18:51:41,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:51:41,935 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2495 transitions. [2022-11-18 18:51:41,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 18:51:41,938 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:41,938 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:41,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 18:51:41,939 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:41,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:41,939 INFO L85 PathProgramCache]: Analyzing trace with hash 597491214, now seen corresponding path program 1 times [2022-11-18 18:51:41,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:41,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [864528827] [2022-11-18 18:51:41,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:41,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:51:42,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:42,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:51:42,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:51:42,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:42,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:42,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:51:42,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:51:42,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:51:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:42,391 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:51:42,391 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:42,391 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [864528827] [2022-11-18 18:51:42,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [864528827] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:42,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:42,392 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 18:51:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575474542] [2022-11-18 18:51:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:42,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 18:51:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 18:51:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 18:51:42,393 INFO L87 Difference]: Start difference. First operand 1526 states and 2495 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:49,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:49,688 INFO L93 Difference]: Finished difference Result 3587 states and 6027 transitions. [2022-11-18 18:51:49,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-18 18:51:49,688 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2022-11-18 18:51:49,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:49,699 INFO L225 Difference]: With dead ends: 3587 [2022-11-18 18:51:49,699 INFO L226 Difference]: Without dead ends: 2079 [2022-11-18 18:51:49,705 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:51:49,706 INFO L413 NwaCegarLoop]: 477 mSDtfsCounter, 936 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 2826 mSolverCounterSat, 250 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1008 SdHoareTripleChecker+Valid, 1863 SdHoareTripleChecker+Invalid, 3076 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 250 IncrementalHoareTripleChecker+Valid, 2826 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:49,706 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1008 Valid, 1863 Invalid, 3076 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [250 Valid, 2826 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-18 18:51:49,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2079 states. [2022-11-18 18:51:50,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2079 to 1526. [2022-11-18 18:51:50,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1526 states, 1196 states have (on average 1.5961538461538463) internal successors, (1909), 1253 states have internal predecessors, (1909), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:51:50,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1526 states to 1526 states and 2494 transitions. [2022-11-18 18:51:50,175 INFO L78 Accepts]: Start accepts. Automaton has 1526 states and 2494 transitions. Word has length 103 [2022-11-18 18:51:50,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:50,175 INFO L495 AbstractCegarLoop]: Abstraction has 1526 states and 2494 transitions. [2022-11-18 18:51:50,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-18 18:51:50,175 INFO L276 IsEmpty]: Start isEmpty. Operand 1526 states and 2494 transitions. [2022-11-18 18:51:50,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 18:51:50,178 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:50,178 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:50,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 18:51:50,178 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:50,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:50,179 INFO L85 PathProgramCache]: Analyzing trace with hash -570705041, now seen corresponding path program 1 times [2022-11-18 18:51:50,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:50,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381202290] [2022-11-18 18:51:50,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:50,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:51:50,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:50,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:51:50,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:51:50,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:50,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:51:50,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:51:50,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:51:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:51:50,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:51:50,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:51:50,730 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:51:50,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:51:50,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381202290] [2022-11-18 18:51:50,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381202290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:51:50,730 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:51:50,730 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:51:50,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633814213] [2022-11-18 18:51:50,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:51:50,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:51:50,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:51:50,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:51:50,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:51:50,732 INFO L87 Difference]: Start difference. First operand 1526 states and 2494 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:51:59,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:51:59,350 INFO L93 Difference]: Finished difference Result 3547 states and 5977 transitions. [2022-11-18 18:51:59,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 18:51:59,351 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-11-18 18:51:59,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:51:59,362 INFO L225 Difference]: With dead ends: 3547 [2022-11-18 18:51:59,362 INFO L226 Difference]: Without dead ends: 2069 [2022-11-18 18:51:59,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-11-18 18:51:59,368 INFO L413 NwaCegarLoop]: 476 mSDtfsCounter, 1436 mSDsluCounter, 2729 mSDsCounter, 0 mSdLazyCounter, 4987 mSolverCounterSat, 391 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1508 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 5378 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 391 IncrementalHoareTripleChecker+Valid, 4987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.4s IncrementalHoareTripleChecker+Time [2022-11-18 18:51:59,369 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1508 Valid, 3205 Invalid, 5378 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [391 Valid, 4987 Invalid, 0 Unknown, 0 Unchecked, 6.4s Time] [2022-11-18 18:51:59,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2069 states. [2022-11-18 18:51:59,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2069 to 1518. [2022-11-18 18:51:59,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1518 states, 1188 states have (on average 1.5976430976430978) internal successors, (1898), 1245 states have internal predecessors, (1898), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:51:59,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1518 states to 1518 states and 2483 transitions. [2022-11-18 18:51:59,957 INFO L78 Accepts]: Start accepts. Automaton has 1518 states and 2483 transitions. Word has length 103 [2022-11-18 18:51:59,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:51:59,958 INFO L495 AbstractCegarLoop]: Abstraction has 1518 states and 2483 transitions. [2022-11-18 18:51:59,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:51:59,959 INFO L276 IsEmpty]: Start isEmpty. Operand 1518 states and 2483 transitions. [2022-11-18 18:51:59,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-18 18:51:59,962 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:51:59,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:51:59,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 18:51:59,962 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:51:59,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:51:59,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1964348434, now seen corresponding path program 1 times [2022-11-18 18:51:59,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:51:59,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449549621] [2022-11-18 18:51:59,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:51:59,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:51:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:52:00,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:00,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-11-18 18:52:00,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:52:00,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:52:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:52:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:52:00,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:00,534 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:52:00,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:00,534 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449549621] [2022-11-18 18:52:00,534 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449549621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:00,535 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:00,535 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:52:00,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738829307] [2022-11-18 18:52:00,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:00,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:52:00,536 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:00,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:52:00,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:52:00,536 INFO L87 Difference]: Start difference. First operand 1518 states and 2483 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:52:09,677 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:52:09,677 INFO L93 Difference]: Finished difference Result 3547 states and 5973 transitions. [2022-11-18 18:52:09,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:52:09,678 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-11-18 18:52:09,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:52:09,690 INFO L225 Difference]: With dead ends: 3547 [2022-11-18 18:52:09,690 INFO L226 Difference]: Without dead ends: 2090 [2022-11-18 18:52:09,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:52:09,696 INFO L413 NwaCegarLoop]: 485 mSDtfsCounter, 1000 mSDsluCounter, 2834 mSDsCounter, 0 mSdLazyCounter, 4970 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 5223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 4970 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:52:09,696 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 3319 Invalid, 5223 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [253 Valid, 4970 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-11-18 18:52:09,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2022-11-18 18:52:10,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 1522. [2022-11-18 18:52:10,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1522 states, 1192 states have (on average 1.5956375838926173) internal successors, (1902), 1249 states have internal predecessors, (1902), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:52:10,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1522 states to 1522 states and 2487 transitions. [2022-11-18 18:52:10,217 INFO L78 Accepts]: Start accepts. Automaton has 1522 states and 2487 transitions. Word has length 103 [2022-11-18 18:52:10,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:52:10,217 INFO L495 AbstractCegarLoop]: Abstraction has 1522 states and 2487 transitions. [2022-11-18 18:52:10,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:52:10,218 INFO L276 IsEmpty]: Start isEmpty. Operand 1522 states and 2487 transitions. [2022-11-18 18:52:10,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-18 18:52:10,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:52:10,220 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:10,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 18:52:10,220 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:52:10,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:10,221 INFO L85 PathProgramCache]: Analyzing trace with hash -1695619187, now seen corresponding path program 1 times [2022-11-18 18:52:10,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:10,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1497469445] [2022-11-18 18:52:10,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:10,222 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:52:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:10,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-11-18 18:52:10,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:10,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:52:10,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:52:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:52:10,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:52:10,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:10,779 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:52:10,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:10,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1497469445] [2022-11-18 18:52:10,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1497469445] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:10,780 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:10,780 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:52:10,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263077255] [2022-11-18 18:52:10,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:10,781 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:52:10,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:10,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:52:10,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:52:10,782 INFO L87 Difference]: Start difference. First operand 1522 states and 2487 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:52:20,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:52:20,104 INFO L93 Difference]: Finished difference Result 3555 states and 5979 transitions. [2022-11-18 18:52:20,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 18:52:20,105 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-11-18 18:52:20,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:52:20,115 INFO L225 Difference]: With dead ends: 3555 [2022-11-18 18:52:20,115 INFO L226 Difference]: Without dead ends: 2098 [2022-11-18 18:52:20,119 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-11-18 18:52:20,119 INFO L413 NwaCegarLoop]: 482 mSDtfsCounter, 991 mSDsluCounter, 2818 mSDsCounter, 0 mSdLazyCounter, 4983 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1063 SdHoareTripleChecker+Valid, 3300 SdHoareTripleChecker+Invalid, 5237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 4983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:52:20,119 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1063 Valid, 3300 Invalid, 5237 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [254 Valid, 4983 Invalid, 0 Unknown, 0 Unchecked, 6.8s Time] [2022-11-18 18:52:20,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2098 states. [2022-11-18 18:52:20,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2098 to 1527. [2022-11-18 18:52:20,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1527 states, 1197 states have (on average 1.5931495405179616) internal successors, (1907), 1254 states have internal predecessors, (1907), 257 states have call successors, (257), 61 states have call predecessors, (257), 72 states have return successors, (328), 247 states have call predecessors, (328), 252 states have call successors, (328) [2022-11-18 18:52:20,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1527 states to 1527 states and 2492 transitions. [2022-11-18 18:52:20,648 INFO L78 Accepts]: Start accepts. Automaton has 1527 states and 2492 transitions. Word has length 104 [2022-11-18 18:52:20,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:52:20,648 INFO L495 AbstractCegarLoop]: Abstraction has 1527 states and 2492 transitions. [2022-11-18 18:52:20,648 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-11-18 18:52:20,648 INFO L276 IsEmpty]: Start isEmpty. Operand 1527 states and 2492 transitions. [2022-11-18 18:52:20,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-11-18 18:52:20,651 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:52:20,651 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:20,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 18:52:20,651 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:52:20,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:20,652 INFO L85 PathProgramCache]: Analyzing trace with hash 2055833625, now seen corresponding path program 1 times [2022-11-18 18:52:20,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:20,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [560578458] [2022-11-18 18:52:20,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:20,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:20,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:20,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:52:20,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:20,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:20,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:20,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:52:21,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:21,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:21,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:52:21,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:52:21,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:52:21,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:52:21,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:21,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:52:21,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:21,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [560578458] [2022-11-18 18:52:21,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [560578458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:21,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:52:21,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-11-18 18:52:21,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032353364] [2022-11-18 18:52:21,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:21,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 18:52:21,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:21,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 18:52:21,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-11-18 18:52:21,415 INFO L87 Difference]: Start difference. First operand 1527 states and 2492 transitions. Second operand has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 18:52:56,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:52:56,419 INFO L93 Difference]: Finished difference Result 6020 states and 10491 transitions. [2022-11-18 18:52:56,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2022-11-18 18:52:56,420 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) Word has length 105 [2022-11-18 18:52:56,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:52:56,438 INFO L225 Difference]: With dead ends: 6020 [2022-11-18 18:52:56,438 INFO L226 Difference]: Without dead ends: 4571 [2022-11-18 18:52:56,446 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1887 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=891, Invalid=4659, Unknown=0, NotChecked=0, Total=5550 [2022-11-18 18:52:56,446 INFO L413 NwaCegarLoop]: 866 mSDtfsCounter, 11496 mSDsluCounter, 6373 mSDsCounter, 0 mSdLazyCounter, 17031 mSolverCounterSat, 4725 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11571 SdHoareTripleChecker+Valid, 7239 SdHoareTripleChecker+Invalid, 21756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 4725 IncrementalHoareTripleChecker+Valid, 17031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 24.6s IncrementalHoareTripleChecker+Time [2022-11-18 18:52:56,447 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11571 Valid, 7239 Invalid, 21756 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [4725 Valid, 17031 Invalid, 0 Unknown, 0 Unchecked, 24.6s Time] [2022-11-18 18:52:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4571 states. [2022-11-18 18:52:57,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4571 to 3170. [2022-11-18 18:52:57,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3170 states, 2488 states have (on average 1.5807877813504823) internal successors, (3933), 2606 states have internal predecessors, (3933), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-11-18 18:52:57,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3170 states to 3170 states and 5156 transitions. [2022-11-18 18:52:57,562 INFO L78 Accepts]: Start accepts. Automaton has 3170 states and 5156 transitions. Word has length 105 [2022-11-18 18:52:57,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:52:57,562 INFO L495 AbstractCegarLoop]: Abstraction has 3170 states and 5156 transitions. [2022-11-18 18:52:57,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 6.153846153846154) internal successors, (80), 11 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 6 states have call predecessors, (10), 4 states have call successors, (10) [2022-11-18 18:52:57,563 INFO L276 IsEmpty]: Start isEmpty. Operand 3170 states and 5156 transitions. [2022-11-18 18:52:57,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-18 18:52:57,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:52:57,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:52:57,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 18:52:57,566 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:52:57,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:52:57,567 INFO L85 PathProgramCache]: Analyzing trace with hash 796437532, now seen corresponding path program 1 times [2022-11-18 18:52:57,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:52:57,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [768422855] [2022-11-18 18:52:57,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:57,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:52:57,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:57,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:52:57,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:57,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:57,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:52:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:52:58,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:58,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:52:58,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:52:58,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:52:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:52:58,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:52:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,209 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 18:52:58,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:52:58,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [768422855] [2022-11-18 18:52:58,209 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [768422855] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:52:58,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568218950] [2022-11-18 18:52:58,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:52:58,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:52:58,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:52:58,214 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:52:58,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 18:52:58,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:52:58,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 1428 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:52:58,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:52:58,864 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:52:58,865 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:52:58,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568218950] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:52:58,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:52:58,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-11-18 18:52:58,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59421796] [2022-11-18 18:52:58,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:52:58,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 18:52:58,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:52:58,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 18:52:58,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:52:58,867 INFO L87 Difference]: Start difference. First operand 3170 states and 5156 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:53:00,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:00,645 INFO L93 Difference]: Finished difference Result 3286 states and 5343 transitions. [2022-11-18 18:53:00,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:53:00,646 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 106 [2022-11-18 18:53:00,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:00,663 INFO L225 Difference]: With dead ends: 3286 [2022-11-18 18:53:00,663 INFO L226 Difference]: Without dead ends: 3271 [2022-11-18 18:53:00,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:53:00,666 INFO L413 NwaCegarLoop]: 843 mSDtfsCounter, 793 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 365 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 801 SdHoareTripleChecker+Valid, 2179 SdHoareTripleChecker+Invalid, 372 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:00,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [801 Valid, 2179 Invalid, 372 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 365 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-18 18:53:00,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3271 states. [2022-11-18 18:53:01,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3271 to 3179. [2022-11-18 18:53:01,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2497 states have (on average 1.578694433319984) internal successors, (3942), 2615 states have internal predecessors, (3942), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-11-18 18:53:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5165 transitions. [2022-11-18 18:53:01,747 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5165 transitions. Word has length 106 [2022-11-18 18:53:01,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:01,747 INFO L495 AbstractCegarLoop]: Abstraction has 3179 states and 5165 transitions. [2022-11-18 18:53:01,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-11-18 18:53:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5165 transitions. [2022-11-18 18:53:01,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-18 18:53:01,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:01,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:01,763 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 18:53:01,958 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:53:01,958 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:01,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:01,959 INFO L85 PathProgramCache]: Analyzing trace with hash -1686453129, now seen corresponding path program 1 times [2022-11-18 18:53:01,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:53:01,959 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37597248] [2022-11-18 18:53:01,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:01,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:53:01,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:53:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:02,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:53:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:53:02,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:02,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:02,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:53:02,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:53:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:53:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:53:02,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:53:02,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:02,574 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 18:53:02,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:53:02,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37597248] [2022-11-18 18:53:02,575 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37597248] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:02,575 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:02,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:53:02,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676284767] [2022-11-18 18:53:02,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:02,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:53:02,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:53:02,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:53:02,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:53:02,578 INFO L87 Difference]: Start difference. First operand 3179 states and 5165 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 18:53:17,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:17,165 INFO L93 Difference]: Finished difference Result 4299 states and 7291 transitions. [2022-11-18 18:53:17,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-11-18 18:53:17,165 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-11-18 18:53:17,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:17,183 INFO L225 Difference]: With dead ends: 4299 [2022-11-18 18:53:17,184 INFO L226 Difference]: Without dead ends: 4284 [2022-11-18 18:53:17,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-11-18 18:53:17,188 INFO L413 NwaCegarLoop]: 513 mSDtfsCounter, 4061 mSDsluCounter, 2039 mSDsCounter, 0 mSdLazyCounter, 4956 mSolverCounterSat, 1390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4128 SdHoareTripleChecker+Valid, 2552 SdHoareTripleChecker+Invalid, 6346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1390 IncrementalHoareTripleChecker+Valid, 4956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:17,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4128 Valid, 2552 Invalid, 6346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1390 Valid, 4956 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-11-18 18:53:17,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4284 states. [2022-11-18 18:53:18,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4284 to 3179. [2022-11-18 18:53:18,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3179 states, 2497 states have (on average 1.5758910692831398) internal successors, (3935), 2615 states have internal predecessors, (3935), 524 states have call successors, (524), 124 states have call predecessors, (524), 157 states have return successors, (699), 511 states have call predecessors, (699), 519 states have call successors, (699) [2022-11-18 18:53:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3179 states to 3179 states and 5158 transitions. [2022-11-18 18:53:18,376 INFO L78 Accepts]: Start accepts. Automaton has 3179 states and 5158 transitions. Word has length 112 [2022-11-18 18:53:18,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:18,377 INFO L495 AbstractCegarLoop]: Abstraction has 3179 states and 5158 transitions. [2022-11-18 18:53:18,377 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-11-18 18:53:18,377 INFO L276 IsEmpty]: Start isEmpty. Operand 3179 states and 5158 transitions. [2022-11-18 18:53:18,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-18 18:53:18,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:18,380 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:18,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 18:53:18,380 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:18,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:18,381 INFO L85 PathProgramCache]: Analyzing trace with hash 670072873, now seen corresponding path program 1 times [2022-11-18 18:53:18,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:53:18,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419121275] [2022-11-18 18:53:18,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:18,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:53:18,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:18,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:53:18,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:18,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:18,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:18,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:53:18,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:18,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:53:18,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:18,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:19,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:53:19,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:53:19,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:53:19,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:53:19,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:53:19,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 18:53:19,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:19,100 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:19,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:53:19,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419121275] [2022-11-18 18:53:19,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419121275] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:19,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:19,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-18 18:53:19,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398015407] [2022-11-18 18:53:19,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:19,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 18:53:19,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:53:19,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 18:53:19,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:53:19,103 INFO L87 Difference]: Start difference. First operand 3179 states and 5158 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 18:53:41,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:53:41,906 INFO L93 Difference]: Finished difference Result 8203 states and 13920 transitions. [2022-11-18 18:53:41,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-11-18 18:53:41,906 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-11-18 18:53:41,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:53:41,934 INFO L225 Difference]: With dead ends: 8203 [2022-11-18 18:53:41,934 INFO L226 Difference]: Without dead ends: 5110 [2022-11-18 18:53:41,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 3.6s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2022-11-18 18:53:41,949 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 6169 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 8819 mSolverCounterSat, 2926 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6170 SdHoareTripleChecker+Valid, 2630 SdHoareTripleChecker+Invalid, 11745 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2926 IncrementalHoareTripleChecker+Valid, 8819 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.7s IncrementalHoareTripleChecker+Time [2022-11-18 18:53:41,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6170 Valid, 2630 Invalid, 11745 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2926 Valid, 8819 Invalid, 0 Unknown, 0 Unchecked, 15.7s Time] [2022-11-18 18:53:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5110 states. [2022-11-18 18:53:43,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5110 to 3195. [2022-11-18 18:53:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3195 states, 2509 states have (on average 1.5695496213630928) internal successors, (3938), 2627 states have internal predecessors, (3938), 524 states have call successors, (524), 124 states have call predecessors, (524), 161 states have return successors, (740), 515 states have call predecessors, (740), 519 states have call successors, (740) [2022-11-18 18:53:43,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3195 states to 3195 states and 5202 transitions. [2022-11-18 18:53:43,230 INFO L78 Accepts]: Start accepts. Automaton has 3195 states and 5202 transitions. Word has length 123 [2022-11-18 18:53:43,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:53:43,230 INFO L495 AbstractCegarLoop]: Abstraction has 3195 states and 5202 transitions. [2022-11-18 18:53:43,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 18:53:43,231 INFO L276 IsEmpty]: Start isEmpty. Operand 3195 states and 5202 transitions. [2022-11-18 18:53:43,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-18 18:53:43,233 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:53:43,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:53:43,234 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 18:53:43,234 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:53:43,234 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:53:43,234 INFO L85 PathProgramCache]: Analyzing trace with hash -2141901642, now seen corresponding path program 1 times [2022-11-18 18:53:43,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:53:43,235 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1381190985] [2022-11-18 18:53:43,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:53:43,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:53:43,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:53:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:43,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:53:43,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:53:43,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:43,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:53:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:53:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:53:43,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:53:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:53:43,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:53:43,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 18:53:43,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:53:43,831 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 18:53:43,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:53:43,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1381190985] [2022-11-18 18:53:43,833 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1381190985] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:53:43,833 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:53:43,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 18:53:43,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414948744] [2022-11-18 18:53:43,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:53:43,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 18:53:43,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:53:43,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 18:53:43,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-11-18 18:53:43,836 INFO L87 Difference]: Start difference. First operand 3195 states and 5202 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 18:54:26,906 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:54:26,906 INFO L93 Difference]: Finished difference Result 15838 states and 28431 transitions. [2022-11-18 18:54:26,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-11-18 18:54:26,910 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2022-11-18 18:54:26,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:54:27,043 INFO L225 Difference]: With dead ends: 15838 [2022-11-18 18:54:27,043 INFO L226 Difference]: Without dead ends: 12729 [2022-11-18 18:54:27,078 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 806 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2022-11-18 18:54:27,079 INFO L413 NwaCegarLoop]: 825 mSDtfsCounter, 9181 mSDsluCounter, 2503 mSDsCounter, 0 mSdLazyCounter, 10234 mSolverCounterSat, 5310 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 26.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9248 SdHoareTripleChecker+Valid, 3328 SdHoareTripleChecker+Invalid, 15544 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 5310 IncrementalHoareTripleChecker+Valid, 10234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 29.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:54:27,080 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9248 Valid, 3328 Invalid, 15544 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [5310 Valid, 10234 Invalid, 0 Unknown, 0 Unchecked, 29.0s Time] [2022-11-18 18:54:27,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12729 states. [2022-11-18 18:54:31,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12729 to 8274. [2022-11-18 18:54:31,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8274 states, 6213 states have (on average 1.5530339610494126) internal successors, (9649), 6596 states have internal predecessors, (9649), 1711 states have call successors, (1711), 242 states have call predecessors, (1711), 349 states have return successors, (2690), 1687 states have call predecessors, (2690), 1706 states have call successors, (2690) [2022-11-18 18:54:31,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8274 states to 8274 states and 14050 transitions. [2022-11-18 18:54:31,311 INFO L78 Accepts]: Start accepts. Automaton has 8274 states and 14050 transitions. Word has length 124 [2022-11-18 18:54:31,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:54:31,312 INFO L495 AbstractCegarLoop]: Abstraction has 8274 states and 14050 transitions. [2022-11-18 18:54:31,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 18:54:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 8274 states and 14050 transitions. [2022-11-18 18:54:31,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-11-18 18:54:31,315 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:54:31,315 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:54:31,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 18:54:31,316 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:54:31,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:54:31,316 INFO L85 PathProgramCache]: Analyzing trace with hash -1286167422, now seen corresponding path program 1 times [2022-11-18 18:54:31,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:54:31,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8836896] [2022-11-18 18:54:31,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:54:31,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:54:31,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:54:31,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:54:31,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:54:31,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:54:31,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:54:31,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:54:31,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:54:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 18:54:31,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-11-18 18:54:31,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-18 18:54:31,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-11-18 18:54:31,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 18:54:31,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-11-18 18:54:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:31,993 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:54:31,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:54:31,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8836896] [2022-11-18 18:54:31,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8836896] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:54:31,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631774954] [2022-11-18 18:54:31,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:54:31,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:54:31,995 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:54:32,001 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:54:32,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 18:54:32,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:54:32,334 INFO L263 TraceCheckSpWp]: Trace formula consists of 1505 conjuncts, 15 conjunts are in the unsatisfiable core [2022-11-18 18:54:32,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:54:32,537 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:54:32,538 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 18:54:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:54:32,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631774954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 18:54:32,960 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 18:54:32,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2022-11-18 18:54:32,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1280082982] [2022-11-18 18:54:32,961 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 18:54:32,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 18:54:32,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:54:32,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 18:54:32,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-11-18 18:54:32,963 INFO L87 Difference]: Start difference. First operand 8274 states and 14050 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-18 18:54:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:54:58,372 INFO L93 Difference]: Finished difference Result 21393 states and 38173 transitions. [2022-11-18 18:54:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 18:54:58,374 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-11-18 18:54:58,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:54:58,487 INFO L225 Difference]: With dead ends: 21393 [2022-11-18 18:54:58,487 INFO L226 Difference]: Without dead ends: 13201 [2022-11-18 18:54:58,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 220 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-11-18 18:54:58,541 INFO L413 NwaCegarLoop]: 615 mSDtfsCounter, 6300 mSDsluCounter, 1830 mSDsCounter, 0 mSdLazyCounter, 5154 mSolverCounterSat, 2195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6361 SdHoareTripleChecker+Valid, 2445 SdHoareTripleChecker+Invalid, 7349 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2195 IncrementalHoareTripleChecker+Valid, 5154 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-11-18 18:54:58,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6361 Valid, 2445 Invalid, 7349 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2195 Valid, 5154 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-11-18 18:54:58,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13201 states. [2022-11-18 18:55:03,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13201 to 9236. [2022-11-18 18:55:03,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9236 states, 6963 states have (on average 1.5430130690794197) internal successors, (10744), 7379 states have internal predecessors, (10744), 1863 states have call successors, (1863), 282 states have call predecessors, (1863), 409 states have return successors, (2957), 1829 states have call predecessors, (2957), 1858 states have call successors, (2957) [2022-11-18 18:55:03,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9236 states to 9236 states and 15564 transitions. [2022-11-18 18:55:03,703 INFO L78 Accepts]: Start accepts. Automaton has 9236 states and 15564 transitions. Word has length 132 [2022-11-18 18:55:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:55:03,704 INFO L495 AbstractCegarLoop]: Abstraction has 9236 states and 15564 transitions. [2022-11-18 18:55:03,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-18 18:55:03,704 INFO L276 IsEmpty]: Start isEmpty. Operand 9236 states and 15564 transitions. [2022-11-18 18:55:03,709 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-11-18 18:55:03,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:55:03,710 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:03,716 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-18 18:55:03,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:55:03,913 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:55:03,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:55:03,913 INFO L85 PathProgramCache]: Analyzing trace with hash 366582690, now seen corresponding path program 1 times [2022-11-18 18:55:03,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:55:03,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110895762] [2022-11-18 18:55:03,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:55:03,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:55:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:55:04,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:55:04,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:55:04,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:55:04,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:55:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:55:04,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-11-18 18:55:04,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:55:04,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:55:04,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-18 18:55:04,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 18:55:04,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-11-18 18:55:04,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 18:55:04,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,597 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-18 18:55:04,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:55:04,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110895762] [2022-11-18 18:55:04,598 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110895762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 18:55:04,598 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [343790172] [2022-11-18 18:55:04,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:55:04,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 18:55:04,598 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 18:55:04,600 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 18:55:04,630 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 18:55:04,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:04,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 1500 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 18:55:04,931 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 18:55:04,997 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-18 18:55:04,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 18:55:04,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [343790172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:55:05,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 18:55:05,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-18 18:55:05,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328349003] [2022-11-18 18:55:05,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:55:05,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 18:55:05,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:55:05,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 18:55:05,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-11-18 18:55:05,003 INFO L87 Difference]: Start difference. First operand 9236 states and 15564 transitions. Second operand has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 18:55:15,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:55:15,220 INFO L93 Difference]: Finished difference Result 25626 states and 43744 transitions. [2022-11-18 18:55:15,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 18:55:15,221 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 136 [2022-11-18 18:55:15,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:55:15,326 INFO L225 Difference]: With dead ends: 25626 [2022-11-18 18:55:15,327 INFO L226 Difference]: Without dead ends: 16448 [2022-11-18 18:55:15,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-18 18:55:15,396 INFO L413 NwaCegarLoop]: 1392 mSDtfsCounter, 1046 mSDsluCounter, 1813 mSDsCounter, 0 mSdLazyCounter, 568 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 3205 SdHoareTripleChecker+Invalid, 682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 568 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 18:55:15,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 3205 Invalid, 682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 568 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 18:55:15,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16448 states. [2022-11-18 18:55:25,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16448 to 15663. [2022-11-18 18:55:25,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15663 states, 11666 states have (on average 1.5612892165266588) internal successors, (18214), 12420 states have internal predecessors, (18214), 3343 states have call successors, (3343), 482 states have call predecessors, (3343), 653 states have return successors, (4799), 3313 states have call predecessors, (4799), 3338 states have call successors, (4799) [2022-11-18 18:55:25,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15663 states to 15663 states and 26356 transitions. [2022-11-18 18:55:25,976 INFO L78 Accepts]: Start accepts. Automaton has 15663 states and 26356 transitions. Word has length 136 [2022-11-18 18:55:25,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:55:25,976 INFO L495 AbstractCegarLoop]: Abstraction has 15663 states and 26356 transitions. [2022-11-18 18:55:25,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.75) internal successors, (103), 4 states have internal predecessors, (103), 3 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-18 18:55:25,977 INFO L276 IsEmpty]: Start isEmpty. Operand 15663 states and 26356 transitions. [2022-11-18 18:55:25,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-11-18 18:55:25,988 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:55:25,989 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:55:25,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 18:55:26,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5af4a351-1cd3-4698-bcca-2c9d7109728b/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2022-11-18 18:55:26,198 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:55:26,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:55:26,198 INFO L85 PathProgramCache]: Analyzing trace with hash 2102356101, now seen corresponding path program 1 times [2022-11-18 18:55:26,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:55:26,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246997715] [2022-11-18 18:55:26,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:55:26,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:55:26,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:55:26,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:55:26,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:55:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:55:26,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:55:26,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:55:26,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:55:26,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:55:26,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:55:26,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:26,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:55:26,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:27,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-11-18 18:55:27,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:27,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-11-18 18:55:27,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:27,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 18:55:27,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:55:27,038 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-11-18 18:55:27,038 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:55:27,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246997715] [2022-11-18 18:55:27,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246997715] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:55:27,039 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:55:27,039 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 18:55:27,039 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2117592733] [2022-11-18 18:55:27,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:55:27,040 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 18:55:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:55:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 18:55:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-11-18 18:55:27,042 INFO L87 Difference]: Start difference. First operand 15663 states and 26356 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:55:58,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:55:58,722 INFO L93 Difference]: Finished difference Result 38329 states and 67373 transitions. [2022-11-18 18:55:58,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 18:55:58,723 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 135 [2022-11-18 18:55:58,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:55:58,879 INFO L225 Difference]: With dead ends: 38329 [2022-11-18 18:55:58,879 INFO L226 Difference]: Without dead ends: 22764 [2022-11-18 18:55:58,963 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=165, Invalid=537, Unknown=0, NotChecked=0, Total=702 [2022-11-18 18:55:58,964 INFO L413 NwaCegarLoop]: 588 mSDtfsCounter, 4231 mSDsluCounter, 2887 mSDsCounter, 0 mSdLazyCounter, 5939 mSolverCounterSat, 1331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 3475 SdHoareTripleChecker+Invalid, 7270 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1331 IncrementalHoareTripleChecker+Valid, 5939 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-11-18 18:55:58,965 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4291 Valid, 3475 Invalid, 7270 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1331 Valid, 5939 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-11-18 18:55:58,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22764 states. [2022-11-18 18:56:09,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22764 to 16174. [2022-11-18 18:56:09,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16174 states, 12157 states have (on average 1.553261495434729) internal successors, (18883), 12876 states have internal predecessors, (18883), 3311 states have call successors, (3311), 544 states have call predecessors, (3311), 705 states have return successors, (4697), 3281 states have call predecessors, (4697), 3306 states have call successors, (4697) [2022-11-18 18:56:09,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16174 states to 16174 states and 26891 transitions. [2022-11-18 18:56:09,146 INFO L78 Accepts]: Start accepts. Automaton has 16174 states and 26891 transitions. Word has length 135 [2022-11-18 18:56:09,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 18:56:09,146 INFO L495 AbstractCegarLoop]: Abstraction has 16174 states and 26891 transitions. [2022-11-18 18:56:09,146 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-18 18:56:09,146 INFO L276 IsEmpty]: Start isEmpty. Operand 16174 states and 26891 transitions. [2022-11-18 18:56:09,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-11-18 18:56:09,152 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 18:56:09,152 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 18:56:09,152 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 18:56:09,152 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 18:56:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 18:56:09,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1486447510, now seen corresponding path program 1 times [2022-11-18 18:56:09,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 18:56:09,153 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678725262] [2022-11-18 18:56:09,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 18:56:09,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 18:56:09,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-11-18 18:56:09,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:56:09,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 18:56:09,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 18:56:09,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:56:09,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 18:56:09,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-11-18 18:56:09,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:56:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-11-18 18:56:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-11-18 18:56:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-18 18:56:09,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-11-18 18:56:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-11-18 18:56:09,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 18:56:09,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 18:56:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 18:56:09,980 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-18 18:56:09,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 18:56:09,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678725262] [2022-11-18 18:56:09,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678725262] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 18:56:09,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 18:56:09,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 18:56:09,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005062306] [2022-11-18 18:56:09,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 18:56:09,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 18:56:09,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 18:56:09,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 18:56:09,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-18 18:56:09,985 INFO L87 Difference]: Start difference. First operand 16174 states and 26891 transitions. Second operand has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-18 18:57:07,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 18:57:07,214 INFO L93 Difference]: Finished difference Result 69448 states and 130557 transitions. [2022-11-18 18:57:07,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-18 18:57:07,215 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.625) internal successors, (101), 5 states have internal predecessors, (101), 5 states have call successors, (16), 5 states have call predecessors, (16), 3 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2022-11-18 18:57:07,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 18:57:07,884 INFO L225 Difference]: With dead ends: 69448 [2022-11-18 18:57:07,884 INFO L226 Difference]: Without dead ends: 53360 [2022-11-18 18:57:08,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=124, Invalid=256, Unknown=0, NotChecked=0, Total=380 [2022-11-18 18:57:08,175 INFO L413 NwaCegarLoop]: 689 mSDtfsCounter, 3771 mSDsluCounter, 1815 mSDsCounter, 0 mSdLazyCounter, 3572 mSolverCounterSat, 1400 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 4972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1400 IncrementalHoareTripleChecker+Valid, 3572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.9s IncrementalHoareTripleChecker+Time [2022-11-18 18:57:08,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3840 Valid, 2504 Invalid, 4972 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1400 Valid, 3572 Invalid, 0 Unknown, 0 Unchecked, 13.9s Time] [2022-11-18 18:57:08,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53360 states.