./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8 --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 dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a --- 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-e04fb08 [2022-11-16 12:15:55,978 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:15:55,982 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:15:56,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:15:56,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:15:56,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:15:56,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:15:56,016 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:15:56,018 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:15:56,019 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:15:56,021 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:15:56,022 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:15:56,023 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:15:56,025 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:15:56,026 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:15:56,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:15:56,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:15:56,031 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:15:56,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:15:56,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:15:56,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:15:56,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:15:56,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:15:56,043 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:15:56,047 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:15:56,048 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:15:56,049 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:15:56,050 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:15:56,051 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:15:56,052 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:15:56,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:15:56,054 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:15:56,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:15:56,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:15:56,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:15:56,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:15:56,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:15:56,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:15:56,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:15:56,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:15:56,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:15:56,064 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 12:15:56,094 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:15:56,095 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:15:56,095 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:15:56,095 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:15:56,096 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 12:15:56,097 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 12:15:56,098 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:15:56,098 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:15:56,098 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:15:56,099 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:15:56,099 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 12:15:56,099 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:15:56,100 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 12:15:56,100 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:15:56,100 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 12:15:56,100 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 12:15:56,101 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 12:15:56,101 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 12:15:56,101 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:15:56,102 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:15:56,102 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 12:15:56,102 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:15:56,103 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:15:56,103 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 12:15:56,103 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:56,104 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:15:56,104 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 12:15:56,104 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 12:15:56,104 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:15:56,105 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 12:15:56,105 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 12:15:56,105 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 12:15:56,106 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 12:15:56,106 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_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a [2022-11-16 12:15:56,388 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:15:56,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:15:56,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:15:56,422 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:15:56,423 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:15:56,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-11-16 12:15:56,520 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/data/4d98328a2/23b1739cbce946758fe4c6284b4378f9/FLAGf536a5cf4 [2022-11-16 12:15:57,242 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:15:57,243 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-11-16 12:15:57,270 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/data/4d98328a2/23b1739cbce946758fe4c6284b4378f9/FLAGf536a5cf4 [2022-11-16 12:15:57,515 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/data/4d98328a2/23b1739cbce946758fe4c6284b4378f9 [2022-11-16 12:15:57,518 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:15:57,519 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:15:57,522 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:57,522 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:15:57,536 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:15:57,537 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3f59025b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:57, skipping insertion in model container [2022-11-16 12:15:57,542 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:15:57" (1/1) ... [2022-11-16 12:15:57,550 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:15:57,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:15:57,849 WARN L229 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_1519553b-493b-43b2-b6b9-c9e635fe597e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2022-11-16 12:15:57,914 WARN L229 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_1519553b-493b-43b2-b6b9-c9e635fe597e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2022-11-16 12:15:58,048 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:58,061 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:15:58,076 WARN L229 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_1519553b-493b-43b2-b6b9-c9e635fe597e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2022-11-16 12:15:58,097 WARN L229 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_1519553b-493b-43b2-b6b9-c9e635fe597e/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2022-11-16 12:15:58,225 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:15:58,265 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:15:58,266 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58 WrapperNode [2022-11-16 12:15:58,266 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:15:58,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:58,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:15:58,269 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:15:58,278 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,296 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,364 INFO L138 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1101 [2022-11-16 12:15:58,365 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:15:58,366 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:15:58,366 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:15:58,366 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:15:58,379 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,379 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,385 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,396 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,431 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,451 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,455 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,460 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,468 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:15:58,469 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:15:58,469 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:15:58,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:15:58,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (1/1) ... [2022-11-16 12:15:58,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 12:15:58,519 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:15:58,545 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 12:15:58,578 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 12:15:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 12:15:58,616 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-16 12:15:58,616 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-16 12:15:58,617 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-16 12:15:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-16 12:15:58,619 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-16 12:15:58,619 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-16 12:15:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-16 12:15:58,620 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-16 12:15:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-16 12:15:58,620 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-16 12:15:58,620 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-16 12:15:58,635 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-16 12:15:58,635 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-16 12:15:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-16 12:15:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-16 12:15:58,636 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-16 12:15:58,636 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-16 12:15:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-16 12:15:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-16 12:15:58,637 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-16 12:15:58,637 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-16 12:15:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-16 12:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 12:15:58,638 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-16 12:15:58,638 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-16 12:15:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-16 12:15:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-16 12:15:58,639 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:15:58,639 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:15:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-16 12:15:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-16 12:15:58,640 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-16 12:15:58,640 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-16 12:15:58,933 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:15:58,951 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:16:00,227 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:16:00,252 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:16:00,252 INFO L300 CfgBuilder]: Removed 20 assume(true) statements. [2022-11-16 12:16:00,257 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:00 BoogieIcfgContainer [2022-11-16 12:16:00,257 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:16:00,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 12:16:00,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 12:16:00,266 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 12:16:00,267 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 12:15:57" (1/3) ... [2022-11-16 12:16:00,268 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3f7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:00, skipping insertion in model container [2022-11-16 12:16:00,268 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:15:58" (2/3) ... [2022-11-16 12:16:00,269 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31b3f7ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 12:16:00, skipping insertion in model container [2022-11-16 12:16:00,269 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:16:00" (3/3) ... [2022-11-16 12:16:00,271 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.15.cil.c [2022-11-16 12:16:00,296 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 12:16:00,296 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-16 12:16:00,399 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 12:16:00,408 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;@34587d57, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 12:16:00,408 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-16 12:16:00,416 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2022-11-16 12:16:00,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:16:00,431 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:00,432 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] [2022-11-16 12:16:00,433 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:00,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:00,440 INFO L85 PathProgramCache]: Analyzing trace with hash -338141029, now seen corresponding path program 1 times [2022-11-16 12:16:00,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:00,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [799270146] [2022-11-16 12:16:00,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:00,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:00,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:01,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:01,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:01,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:01,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:01,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:01,161 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:01,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:01,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [799270146] [2022-11-16 12:16:01,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [799270146] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:01,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:01,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:16:01,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051489258] [2022-11-16 12:16:01,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:01,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:16:01,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:01,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:16:01,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:01,212 INFO L87 Difference]: Start difference. First operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:16:03,576 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:03,577 INFO L93 Difference]: Finished difference Result 1133 states and 1820 transitions. [2022-11-16 12:16:03,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:16:03,580 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-16 12:16:03,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:03,612 INFO L225 Difference]: With dead ends: 1133 [2022-11-16 12:16:03,623 INFO L226 Difference]: Without dead ends: 638 [2022-11-16 12:16:03,631 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:16:03,642 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1280 mSDsluCounter, 1508 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1285 SdHoareTripleChecker+Valid, 1970 SdHoareTripleChecker+Invalid, 1603 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:03,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1285 Valid, 1970 Invalid, 1603 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [192 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-16 12:16:03,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2022-11-16 12:16:03,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 599. [2022-11-16 12:16:03,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 521 states have (on average 1.5335892514395393) internal successors, (799), 528 states have internal predecessors, (799), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2022-11-16 12:16:03,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 908 transitions. [2022-11-16 12:16:03,798 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 908 transitions. Word has length 65 [2022-11-16 12:16:03,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:03,799 INFO L495 AbstractCegarLoop]: Abstraction has 599 states and 908 transitions. [2022-11-16 12:16:03,799 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:16:03,800 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 908 transitions. [2022-11-16 12:16:03,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:16:03,804 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:03,805 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] [2022-11-16 12:16:03,805 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 12:16:03,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:03,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:03,807 INFO L85 PathProgramCache]: Analyzing trace with hash -74903688, now seen corresponding path program 1 times [2022-11-16 12:16:03,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:03,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45707424] [2022-11-16 12:16:03,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:03,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:03,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:03,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:03,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:04,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:04,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:04,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:04,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:04,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:04,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:04,116 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:04,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:04,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45707424] [2022-11-16 12:16:04,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45707424] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:04,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:04,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:16:04,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566172606] [2022-11-16 12:16:04,119 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:04,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:16:04,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:04,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:16:04,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:04,131 INFO L87 Difference]: Start difference. First operand 599 states and 908 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:06,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:06,272 INFO L93 Difference]: Finished difference Result 813 states and 1202 transitions. [2022-11-16 12:16:06,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:16:06,273 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-16 12:16:06,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:06,280 INFO L225 Difference]: With dead ends: 813 [2022-11-16 12:16:06,280 INFO L226 Difference]: Without dead ends: 636 [2022-11-16 12:16:06,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:16:06,286 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1039 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 2046 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1040 SdHoareTripleChecker+Valid, 2704 SdHoareTripleChecker+Invalid, 2189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:06,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1040 Valid, 2704 Invalid, 2189 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2046 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 12:16:06,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-11-16 12:16:06,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 604. [2022-11-16 12:16:06,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 525 states have (on average 1.5276190476190477) internal successors, (802), 532 states have internal predecessors, (802), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2022-11-16 12:16:06,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 912 transitions. [2022-11-16 12:16:06,397 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 912 transitions. Word has length 65 [2022-11-16 12:16:06,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:06,397 INFO L495 AbstractCegarLoop]: Abstraction has 604 states and 912 transitions. [2022-11-16 12:16:06,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:06,398 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 912 transitions. [2022-11-16 12:16:06,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:16:06,401 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:06,401 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] [2022-11-16 12:16:06,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 12:16:06,402 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:06,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:06,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1104262986, now seen corresponding path program 1 times [2022-11-16 12:16:06,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:06,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494463402] [2022-11-16 12:16:06,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:06,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:06,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:06,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:06,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:06,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:06,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:06,656 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:06,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:06,656 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494463402] [2022-11-16 12:16:06,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494463402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:06,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:06,658 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-16 12:16:06,658 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593712816] [2022-11-16 12:16:06,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:06,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:06,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:06,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:06,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:06,661 INFO L87 Difference]: Start difference. First operand 604 states and 912 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:16:10,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:10,040 INFO L93 Difference]: Finished difference Result 1504 states and 2131 transitions. [2022-11-16 12:16:10,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-16 12:16:10,041 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-11-16 12:16:10,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:10,055 INFO L225 Difference]: With dead ends: 1504 [2022-11-16 12:16:10,056 INFO L226 Difference]: Without dead ends: 1310 [2022-11-16 12:16:10,061 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-16 12:16:10,068 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 3863 mSDsluCounter, 2289 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3879 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 2658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:10,070 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3879 Valid, 2792 Invalid, 2658 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-16 12:16:10,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2022-11-16 12:16:10,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1185. [2022-11-16 12:16:10,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 987 states have (on average 1.4346504559270516) internal successors, (1416), 1002 states have internal predecessors, (1416), 111 states have call successors, (111), 75 states have call predecessors, (111), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2022-11-16 12:16:10,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1652 transitions. [2022-11-16 12:16:10,242 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1652 transitions. Word has length 65 [2022-11-16 12:16:10,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:10,245 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1652 transitions. [2022-11-16 12:16:10,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-16 12:16:10,246 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1652 transitions. [2022-11-16 12:16:10,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:16:10,250 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:10,251 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] [2022-11-16 12:16:10,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 12:16:10,251 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:10,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:10,252 INFO L85 PathProgramCache]: Analyzing trace with hash -52813897, now seen corresponding path program 1 times [2022-11-16 12:16:10,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:10,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057891376] [2022-11-16 12:16:10,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:10,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:10,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:10,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:10,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:10,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:10,591 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:10,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:10,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057891376] [2022-11-16 12:16:10,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057891376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:10,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:10,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:16:10,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [713264430] [2022-11-16 12:16:10,593 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:10,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:16:10,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:10,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:16:10,596 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:10,596 INFO L87 Difference]: Start difference. First operand 1185 states and 1652 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:12,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:12,789 INFO L93 Difference]: Finished difference Result 2066 states and 2795 transitions. [2022-11-16 12:16:12,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:16:12,790 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-16 12:16:12,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:12,798 INFO L225 Difference]: With dead ends: 2066 [2022-11-16 12:16:12,798 INFO L226 Difference]: Without dead ends: 1297 [2022-11-16 12:16:12,800 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:16:12,802 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 1042 mSDsluCounter, 2269 mSDsCounter, 0 mSdLazyCounter, 2032 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1044 SdHoareTripleChecker+Valid, 2702 SdHoareTripleChecker+Invalid, 2176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:12,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1044 Valid, 2702 Invalid, 2176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2032 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 12:16:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2022-11-16 12:16:12,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1205. [2022-11-16 12:16:12,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1003 states have (on average 1.4227318045862414) internal successors, (1427), 1018 states have internal predecessors, (1427), 111 states have call successors, (111), 75 states have call predecessors, (111), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2022-11-16 12:16:12,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1667 transitions. [2022-11-16 12:16:12,910 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1667 transitions. Word has length 65 [2022-11-16 12:16:12,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:12,910 INFO L495 AbstractCegarLoop]: Abstraction has 1205 states and 1667 transitions. [2022-11-16 12:16:12,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:12,911 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1667 transitions. [2022-11-16 12:16:12,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:16:12,912 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:12,912 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] [2022-11-16 12:16:12,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 12:16:12,913 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:12,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:12,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1333389497, now seen corresponding path program 1 times [2022-11-16 12:16:12,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:12,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867179656] [2022-11-16 12:16:12,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:12,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:12,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:13,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:13,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:13,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:13,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:13,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:13,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867179656] [2022-11-16 12:16:13,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867179656] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:13,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:13,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:16:13,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055551116] [2022-11-16 12:16:13,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:13,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:16:13,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:13,192 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:16:13,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:13,193 INFO L87 Difference]: Start difference. First operand 1205 states and 1667 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:16:15,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:15,409 INFO L93 Difference]: Finished difference Result 2773 states and 3614 transitions. [2022-11-16 12:16:15,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-16 12:16:15,410 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-16 12:16:15,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:15,422 INFO L225 Difference]: With dead ends: 2773 [2022-11-16 12:16:15,422 INFO L226 Difference]: Without dead ends: 1985 [2022-11-16 12:16:15,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-16 12:16:15,428 INFO L413 NwaCegarLoop]: 418 mSDtfsCounter, 1534 mSDsluCounter, 1840 mSDsCounter, 0 mSdLazyCounter, 1684 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1564 SdHoareTripleChecker+Valid, 2258 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 1684 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:15,429 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1564 Valid, 2258 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 1684 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-16 12:16:15,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-11-16 12:16:15,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1653. [2022-11-16 12:16:15,575 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1356 states have (on average 1.3834808259587021) internal successors, (1876), 1380 states have internal predecessors, (1876), 157 states have call successors, (157), 114 states have call predecessors, (157), 138 states have return successors, (201), 161 states have call predecessors, (201), 153 states have call successors, (201) [2022-11-16 12:16:15,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2234 transitions. [2022-11-16 12:16:15,586 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2234 transitions. Word has length 65 [2022-11-16 12:16:15,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:15,587 INFO L495 AbstractCegarLoop]: Abstraction has 1653 states and 2234 transitions. [2022-11-16 12:16:15,587 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:16:15,587 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2234 transitions. [2022-11-16 12:16:15,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-16 12:16:15,589 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:15,590 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] [2022-11-16 12:16:15,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 12:16:15,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:15,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:15,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1199375991, now seen corresponding path program 1 times [2022-11-16 12:16:15,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:15,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838463037] [2022-11-16 12:16:15,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:15,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:15,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:15,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:15,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:15,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:15,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:15,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:15,807 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:15,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:15,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838463037] [2022-11-16 12:16:15,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838463037] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:15,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:15,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:15,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [947127917] [2022-11-16 12:16:15,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:15,811 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:15,811 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:15,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:15,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:15,812 INFO L87 Difference]: Start difference. First operand 1653 states and 2234 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:16:17,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:17,185 INFO L93 Difference]: Finished difference Result 4131 states and 5388 transitions. [2022-11-16 12:16:17,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 12:16:17,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-16 12:16:17,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:17,207 INFO L225 Difference]: With dead ends: 4131 [2022-11-16 12:16:17,207 INFO L226 Difference]: Without dead ends: 2897 [2022-11-16 12:16:17,212 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:16:17,215 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 2266 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 261 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2300 SdHoareTripleChecker+Valid, 1164 SdHoareTripleChecker+Invalid, 857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 261 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:17,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2300 Valid, 1164 Invalid, 857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [261 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:16:17,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2022-11-16 12:16:17,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2789. [2022-11-16 12:16:17,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2227 states have (on average 1.3161203412662774) internal successors, (2931), 2273 states have internal predecessors, (2931), 286 states have call successors, (286), 220 states have call predecessors, (286), 274 states have return successors, (415), 300 states have call predecessors, (415), 282 states have call successors, (415) [2022-11-16 12:16:17,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3632 transitions. [2022-11-16 12:16:17,526 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3632 transitions. Word has length 65 [2022-11-16 12:16:17,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:17,527 INFO L495 AbstractCegarLoop]: Abstraction has 2789 states and 3632 transitions. [2022-11-16 12:16:17,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-16 12:16:17,527 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3632 transitions. [2022-11-16 12:16:17,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-16 12:16:17,529 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:17,529 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] [2022-11-16 12:16:17,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 12:16:17,529 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:17,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:17,530 INFO L85 PathProgramCache]: Analyzing trace with hash -791607456, now seen corresponding path program 1 times [2022-11-16 12:16:17,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:17,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752273480] [2022-11-16 12:16:17,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:17,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:17,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:17,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:17,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:17,660 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:17,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752273480] [2022-11-16 12:16:17,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752273480] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:17,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:17,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:17,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918321642] [2022-11-16 12:16:17,661 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:17,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:17,663 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:17,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:17,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:17,664 INFO L87 Difference]: Start difference. First operand 2789 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:19,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:19,317 INFO L93 Difference]: Finished difference Result 6241 states and 7964 transitions. [2022-11-16 12:16:19,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:19,318 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-16 12:16:19,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:19,341 INFO L225 Difference]: With dead ends: 6241 [2022-11-16 12:16:19,341 INFO L226 Difference]: Without dead ends: 3878 [2022-11-16 12:16:19,349 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:19,353 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 881 mSDsluCounter, 1414 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 890 SdHoareTripleChecker+Valid, 1853 SdHoareTripleChecker+Invalid, 1071 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:19,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [890 Valid, 1853 Invalid, 1071 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:16:19,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2022-11-16 12:16:19,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3622. [2022-11-16 12:16:19,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 2872 states have (on average 1.2959610027855153) internal successors, (3722), 2925 states have internal predecessors, (3722), 378 states have call successors, (378), 300 states have call predecessors, (378), 370 states have return successors, (533), 401 states have call predecessors, (533), 374 states have call successors, (533) [2022-11-16 12:16:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 4633 transitions. [2022-11-16 12:16:19,722 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 4633 transitions. Word has length 66 [2022-11-16 12:16:19,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:19,723 INFO L495 AbstractCegarLoop]: Abstraction has 3622 states and 4633 transitions. [2022-11-16 12:16:19,723 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:19,723 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 4633 transitions. [2022-11-16 12:16:19,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-16 12:16:19,732 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:19,733 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] [2022-11-16 12:16:19,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 12:16:19,733 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:19,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:19,734 INFO L85 PathProgramCache]: Analyzing trace with hash -993648705, now seen corresponding path program 1 times [2022-11-16 12:16:19,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:19,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [633186119] [2022-11-16 12:16:19,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:19,735 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:19,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:19,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:19,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:19,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:19,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:19,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:19,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:19,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [633186119] [2022-11-16 12:16:19,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [633186119] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:19,852 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:19,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:19,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669721024] [2022-11-16 12:16:19,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:19,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:19,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:19,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:19,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:19,855 INFO L87 Difference]: Start difference. First operand 3622 states and 4633 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:21,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:21,449 INFO L93 Difference]: Finished difference Result 7633 states and 9607 transitions. [2022-11-16 12:16:21,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:16:21,450 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-16 12:16:21,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:21,474 INFO L225 Difference]: With dead ends: 7633 [2022-11-16 12:16:21,474 INFO L226 Difference]: Without dead ends: 4433 [2022-11-16 12:16:21,482 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:21,483 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 1474 mSDsluCounter, 1124 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1509 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 760 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:21,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1509 Valid, 1574 Invalid, 760 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-16 12:16:21,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2022-11-16 12:16:21,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4185. [2022-11-16 12:16:21,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 3319 states have (on average 1.2862307924073517) internal successors, (4269), 3378 states have internal predecessors, (4269), 434 states have call successors, (434), 350 states have call predecessors, (434), 430 states have return successors, (610), 461 states have call predecessors, (610), 430 states have call successors, (610) [2022-11-16 12:16:21,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 5313 transitions. [2022-11-16 12:16:21,914 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 5313 transitions. Word has length 72 [2022-11-16 12:16:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:21,914 INFO L495 AbstractCegarLoop]: Abstraction has 4185 states and 5313 transitions. [2022-11-16 12:16:21,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-16 12:16:21,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 5313 transitions. [2022-11-16 12:16:21,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-16 12:16:21,918 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:21,918 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:16:21,918 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 12:16:21,919 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:21,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:21,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1255358187, now seen corresponding path program 1 times [2022-11-16 12:16:21,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:21,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716323403] [2022-11-16 12:16:21,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:21,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:21,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:22,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:22,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:22,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:22,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:22,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:22,068 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:22,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:22,069 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716323403] [2022-11-16 12:16:22,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716323403] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:22,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:22,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:22,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811483633] [2022-11-16 12:16:22,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:22,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:22,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:22,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:22,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:22,072 INFO L87 Difference]: Start difference. First operand 4185 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:16:23,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:23,832 INFO L93 Difference]: Finished difference Result 5254 states and 6597 transitions. [2022-11-16 12:16:23,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 12:16:23,839 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-16 12:16:23,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:23,871 INFO L225 Difference]: With dead ends: 5254 [2022-11-16 12:16:23,871 INFO L226 Difference]: Without dead ends: 5251 [2022-11-16 12:16:23,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-16 12:16:23,877 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 2586 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2596 SdHoareTripleChecker+Valid, 1190 SdHoareTripleChecker+Invalid, 934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:23,878 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2596 Valid, 1190 Invalid, 934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 583 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-16 12:16:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2022-11-16 12:16:24,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4942. [2022-11-16 12:16:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 3897 states have (on average 1.2740569668976136) internal successors, (4965), 3963 states have internal predecessors, (4965), 517 states have call successors, (517), 422 states have call predecessors, (517), 526 states have return successors, (738), 561 states have call predecessors, (738), 514 states have call successors, (738) [2022-11-16 12:16:24,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 6220 transitions. [2022-11-16 12:16:24,571 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 6220 transitions. Word has length 73 [2022-11-16 12:16:24,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:24,573 INFO L495 AbstractCegarLoop]: Abstraction has 4942 states and 6220 transitions. [2022-11-16 12:16:24,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:16:24,575 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 6220 transitions. [2022-11-16 12:16:24,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-16 12:16:24,578 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:24,578 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-16 12:16:24,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 12:16:24,579 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:24,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:24,580 INFO L85 PathProgramCache]: Analyzing trace with hash -262921527, now seen corresponding path program 1 times [2022-11-16 12:16:24,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:24,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867102143] [2022-11-16 12:16:24,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:24,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:24,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:24,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:24,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:24,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:24,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:24,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:24,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:24,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867102143] [2022-11-16 12:16:24,841 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867102143] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:24,841 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432624025] [2022-11-16 12:16:24,841 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:24,842 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:24,842 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:24,846 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:24,874 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-16 12:16:25,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:25,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-16 12:16:25,057 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:25,590 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:25,590 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-16 12:16:25,836 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:25,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432624025] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-16 12:16:25,837 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-16 12:16:25,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-16 12:16:25,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535329613] [2022-11-16 12:16:25,838 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-16 12:16:25,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-16 12:16:25,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:25,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-16 12:16:25,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:25,839 INFO L87 Difference]: Start difference. First operand 4942 states and 6220 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 12:16:29,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:29,556 INFO L93 Difference]: Finished difference Result 9456 states and 11705 transitions. [2022-11-16 12:16:29,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-16 12:16:29,557 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-16 12:16:29,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:29,620 INFO L225 Difference]: With dead ends: 9456 [2022-11-16 12:16:29,621 INFO L226 Difference]: Without dead ends: 9453 [2022-11-16 12:16:29,626 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2022-11-16 12:16:29,640 INFO L413 NwaCegarLoop]: 543 mSDtfsCounter, 2007 mSDsluCounter, 2505 mSDsCounter, 0 mSdLazyCounter, 2651 mSolverCounterSat, 204 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2074 SdHoareTripleChecker+Valid, 3048 SdHoareTripleChecker+Invalid, 2855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 204 IncrementalHoareTripleChecker+Valid, 2651 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:29,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2074 Valid, 3048 Invalid, 2855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [204 Valid, 2651 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-16 12:16:29,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9453 states. [2022-11-16 12:16:30,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9453 to 8567. [2022-11-16 12:16:30,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8567 states, 6732 states have (on average 1.2565359477124183) internal successors, (8459), 6849 states have internal predecessors, (8459), 895 states have call successors, (895), 754 states have call predecessors, (895), 938 states have return successors, (1295), 968 states have call predecessors, (1295), 892 states have call successors, (1295) [2022-11-16 12:16:30,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8567 states to 8567 states and 10649 transitions. [2022-11-16 12:16:30,910 INFO L78 Accepts]: Start accepts. Automaton has 8567 states and 10649 transitions. Word has length 74 [2022-11-16 12:16:30,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:30,911 INFO L495 AbstractCegarLoop]: Abstraction has 8567 states and 10649 transitions. [2022-11-16 12:16:30,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-16 12:16:30,911 INFO L276 IsEmpty]: Start isEmpty. Operand 8567 states and 10649 transitions. [2022-11-16 12:16:30,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-16 12:16:30,915 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:30,915 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-16 12:16:30,933 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:31,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:31,124 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:31,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:31,124 INFO L85 PathProgramCache]: Analyzing trace with hash -385890155, now seen corresponding path program 2 times [2022-11-16 12:16:31,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:31,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818548934] [2022-11-16 12:16:31,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:31,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:31,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:31,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:31,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:31,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:31,230 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:31,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:31,230 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [818548934] [2022-11-16 12:16:31,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [818548934] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:31,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:31,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:31,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526534602] [2022-11-16 12:16:31,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:31,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:31,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:31,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:31,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:31,233 INFO L87 Difference]: Start difference. First operand 8567 states and 10649 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:16:32,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:32,860 INFO L93 Difference]: Finished difference Result 11597 states and 14396 transitions. [2022-11-16 12:16:32,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:32,861 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-16 12:16:32,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:33,000 INFO L225 Difference]: With dead ends: 11597 [2022-11-16 12:16:33,006 INFO L226 Difference]: Without dead ends: 4799 [2022-11-16 12:16:33,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:33,022 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1407 mSDsluCounter, 1155 mSDsCounter, 0 mSdLazyCounter, 680 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:33,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 1618 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 680 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-16 12:16:33,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2022-11-16 12:16:33,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 3730. [2022-11-16 12:16:33,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2963 states have (on average 1.2666216672291597) internal successors, (3753), 3002 states have internal predecessors, (3753), 394 states have call successors, (394), 318 states have call predecessors, (394), 371 states have return successors, (519), 414 states have call predecessors, (519), 391 states have call successors, (519) [2022-11-16 12:16:33,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4666 transitions. [2022-11-16 12:16:33,463 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4666 transitions. Word has length 77 [2022-11-16 12:16:33,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:33,463 INFO L495 AbstractCegarLoop]: Abstraction has 3730 states and 4666 transitions. [2022-11-16 12:16:33,464 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-16 12:16:33,464 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4666 transitions. [2022-11-16 12:16:33,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-16 12:16:33,467 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:33,467 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:33,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 12:16:33,468 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:33,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:33,468 INFO L85 PathProgramCache]: Analyzing trace with hash -870186629, now seen corresponding path program 1 times [2022-11-16 12:16:33,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:33,469 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [17272930] [2022-11-16 12:16:33,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:33,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:33,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:33,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:33,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:33,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:33,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:33,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:33,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 12:16:33,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:33,654 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-16 12:16:33,654 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:33,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [17272930] [2022-11-16 12:16:33,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [17272930] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:33,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:33,655 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 12:16:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561829928] [2022-11-16 12:16:33,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:33,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 12:16:33,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:33,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 12:16:33,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-16 12:16:33,657 INFO L87 Difference]: Start difference. First operand 3730 states and 4666 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:16:36,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:36,441 INFO L93 Difference]: Finished difference Result 10338 states and 12689 transitions. [2022-11-16 12:16:36,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-16 12:16:36,442 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-16 12:16:36,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:36,483 INFO L225 Difference]: With dead ends: 10338 [2022-11-16 12:16:36,483 INFO L226 Difference]: Without dead ends: 5962 [2022-11-16 12:16:36,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-16 12:16:36,498 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 1976 mSDsluCounter, 1517 mSDsCounter, 0 mSdLazyCounter, 1445 mSolverCounterSat, 337 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1988 SdHoareTripleChecker+Valid, 1983 SdHoareTripleChecker+Invalid, 1782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 337 IncrementalHoareTripleChecker+Valid, 1445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:36,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1988 Valid, 1983 Invalid, 1782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [337 Valid, 1445 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-16 12:16:36,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2022-11-16 12:16:37,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5698. [2022-11-16 12:16:37,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 4458 states have (on average 1.2292507851054284) internal successors, (5480), 4540 states have internal predecessors, (5480), 610 states have call successors, (610), 504 states have call predecessors, (610), 628 states have return successors, (903), 658 states have call predecessors, (903), 607 states have call successors, (903) [2022-11-16 12:16:37,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 6993 transitions. [2022-11-16 12:16:37,451 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 6993 transitions. Word has length 84 [2022-11-16 12:16:37,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:37,451 INFO L495 AbstractCegarLoop]: Abstraction has 5698 states and 6993 transitions. [2022-11-16 12:16:37,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:16:37,452 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 6993 transitions. [2022-11-16 12:16:37,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-16 12:16:37,456 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:37,456 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:37,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 12:16:37,457 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:37,457 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:37,457 INFO L85 PathProgramCache]: Analyzing trace with hash -780260845, now seen corresponding path program 1 times [2022-11-16 12:16:37,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:37,458 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823722723] [2022-11-16 12:16:37,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:37,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:37,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:37,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:37,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:37,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:37,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:37,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-16 12:16:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:37,627 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-16 12:16:37,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:37,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823722723] [2022-11-16 12:16:37,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823722723] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:37,628 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:37,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 12:16:37,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299784176] [2022-11-16 12:16:37,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:37,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 12:16:37,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:37,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 12:16:37,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:37,630 INFO L87 Difference]: Start difference. First operand 5698 states and 6993 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:16:40,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:40,480 INFO L93 Difference]: Finished difference Result 9345 states and 11351 transitions. [2022-11-16 12:16:40,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-16 12:16:40,481 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-16 12:16:40,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:40,501 INFO L225 Difference]: With dead ends: 9345 [2022-11-16 12:16:40,502 INFO L226 Difference]: Without dead ends: 4796 [2022-11-16 12:16:40,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-16 12:16:40,514 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2063 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2103 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 2157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 306 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:40,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2103 Valid, 2743 Invalid, 2157 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [306 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-16 12:16:40,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2022-11-16 12:16:40,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 4365. [2022-11-16 12:16:40,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 3411 states have (on average 1.2189973614775726) internal successors, (4158), 3476 states have internal predecessors, (4158), 467 states have call successors, (467), 379 states have call predecessors, (467), 485 states have return successors, (645), 514 states have call predecessors, (645), 464 states have call successors, (645) [2022-11-16 12:16:40,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 5270 transitions. [2022-11-16 12:16:40,959 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 5270 transitions. Word has length 93 [2022-11-16 12:16:40,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:40,960 INFO L495 AbstractCegarLoop]: Abstraction has 4365 states and 5270 transitions. [2022-11-16 12:16:40,960 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-16 12:16:40,961 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 5270 transitions. [2022-11-16 12:16:40,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-16 12:16:40,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:40,968 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:40,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 12:16:40,968 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:40,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:40,969 INFO L85 PathProgramCache]: Analyzing trace with hash 464257645, now seen corresponding path program 1 times [2022-11-16 12:16:40,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:40,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [430783233] [2022-11-16 12:16:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:40,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:40,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:41,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:41,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:41,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:41,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:41,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:41,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:41,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 12:16:41,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-16 12:16:41,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-16 12:16:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-16 12:16:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:41,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:41,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-16 12:16:41,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-16 12:16:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-16 12:16:41,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,283 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:16:41,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:41,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [430783233] [2022-11-16 12:16:41,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [430783233] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:41,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395693020] [2022-11-16 12:16:41,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:41,284 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:41,284 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:41,287 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:41,330 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-16 12:16:41,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:41,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-16 12:16:41,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:41,587 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-16 12:16:41,587 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:41,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395693020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:41,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:16:41,588 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-11-16 12:16:41,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1503908967] [2022-11-16 12:16:41,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:41,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:41,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:41,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:41,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:16:41,594 INFO L87 Difference]: Start difference. First operand 4365 states and 5270 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 12:16:42,009 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:42,010 INFO L93 Difference]: Finished difference Result 6585 states and 7909 transitions. [2022-11-16 12:16:42,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:42,010 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-11-16 12:16:42,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:42,021 INFO L225 Difference]: With dead ends: 6585 [2022-11-16 12:16:42,022 INFO L226 Difference]: Without dead ends: 2646 [2022-11-16 12:16:42,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-16 12:16:42,032 INFO L413 NwaCegarLoop]: 773 mSDtfsCounter, 34 mSDsluCounter, 3052 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:42,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3825 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-16 12:16:42,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2022-11-16 12:16:42,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2490. [2022-11-16 12:16:42,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2036 states have (on average 1.2426326129666012) internal successors, (2530), 2055 states have internal predecessors, (2530), 229 states have call successors, (229), 173 states have call predecessors, (229), 223 states have return successors, (309), 262 states have call predecessors, (309), 226 states have call successors, (309) [2022-11-16 12:16:42,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3068 transitions. [2022-11-16 12:16:42,382 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3068 transitions. Word has length 145 [2022-11-16 12:16:42,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:42,382 INFO L495 AbstractCegarLoop]: Abstraction has 2490 states and 3068 transitions. [2022-11-16 12:16:42,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-16 12:16:42,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3068 transitions. [2022-11-16 12:16:42,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-16 12:16:42,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:42,389 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:42,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:42,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:42,596 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:42,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:42,597 INFO L85 PathProgramCache]: Analyzing trace with hash -21978279, now seen corresponding path program 1 times [2022-11-16 12:16:42,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:42,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692990357] [2022-11-16 12:16:42,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:42,598 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:42,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:42,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:42,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:42,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:42,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:42,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:42,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-16 12:16:42,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-16 12:16:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-16 12:16:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-16 12:16:42,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:42,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:42,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-16 12:16:42,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-16 12:16:42,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-16 12:16:42,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:42,750 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-16 12:16:42,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:42,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1692990357] [2022-11-16 12:16:42,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1692990357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:42,751 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:42,751 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:42,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600005453] [2022-11-16 12:16:42,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:42,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:42,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:42,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:42,753 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:42,753 INFO L87 Difference]: Start difference. First operand 2490 states and 3068 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 12:16:43,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:43,985 INFO L93 Difference]: Finished difference Result 2544 states and 3124 transitions. [2022-11-16 12:16:43,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:43,986 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-11-16 12:16:43,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:44,022 INFO L225 Difference]: With dead ends: 2544 [2022-11-16 12:16:44,026 INFO L226 Difference]: Without dead ends: 2026 [2022-11-16 12:16:44,028 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-16 12:16:44,032 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 1136 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 774 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 1441 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:44,034 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 1441 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 774 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-11-16 12:16:44,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2022-11-16 12:16:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1975. [2022-11-16 12:16:44,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1639 states have (on average 1.2684563758389262) internal successors, (2079), 1654 states have internal predecessors, (2079), 172 states have call successors, (172), 124 states have call predecessors, (172), 162 states have return successors, (231), 197 states have call predecessors, (231), 169 states have call successors, (231) [2022-11-16 12:16:44,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2482 transitions. [2022-11-16 12:16:44,269 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2482 transitions. Word has length 147 [2022-11-16 12:16:44,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:44,270 INFO L495 AbstractCegarLoop]: Abstraction has 1975 states and 2482 transitions. [2022-11-16 12:16:44,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-16 12:16:44,270 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2482 transitions. [2022-11-16 12:16:44,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-16 12:16:44,275 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:44,275 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:44,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 12:16:44,275 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:44,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:44,276 INFO L85 PathProgramCache]: Analyzing trace with hash 848578871, now seen corresponding path program 1 times [2022-11-16 12:16:44,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:44,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1730390149] [2022-11-16 12:16:44,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:44,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:44,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:44,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:44,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:44,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 12:16:44,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:16:44,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-16 12:16:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-16 12:16:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-16 12:16:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-16 12:16:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-16 12:16:44,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:44,457 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-16 12:16:44,458 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:44,458 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1730390149] [2022-11-16 12:16:44,458 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1730390149] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:44,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:44,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:16:44,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396727500] [2022-11-16 12:16:44,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:44,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:16:44,460 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:44,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:16:44,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:16:44,461 INFO L87 Difference]: Start difference. First operand 1975 states and 2482 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:16:46,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:46,026 INFO L93 Difference]: Finished difference Result 3258 states and 4002 transitions. [2022-11-16 12:16:46,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 12:16:46,027 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-11-16 12:16:46,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:46,033 INFO L225 Difference]: With dead ends: 3258 [2022-11-16 12:16:46,033 INFO L226 Difference]: Without dead ends: 1868 [2022-11-16 12:16:46,037 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:46,038 INFO L413 NwaCegarLoop]: 454 mSDtfsCounter, 726 mSDsluCounter, 1853 mSDsCounter, 0 mSdLazyCounter, 1350 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 1444 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 1350 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:46,038 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 2307 Invalid, 1444 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 1350 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-16 12:16:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2022-11-16 12:16:46,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1722. [2022-11-16 12:16:46,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1437 states have (on average 1.2867084203201113) internal successors, (1849), 1452 states have internal predecessors, (1849), 147 states have call successors, (147), 103 states have call predecessors, (147), 136 states have return successors, (193), 167 states have call predecessors, (193), 144 states have call successors, (193) [2022-11-16 12:16:46,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2189 transitions. [2022-11-16 12:16:46,221 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2189 transitions. Word has length 159 [2022-11-16 12:16:46,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:46,221 INFO L495 AbstractCegarLoop]: Abstraction has 1722 states and 2189 transitions. [2022-11-16 12:16:46,222 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-16 12:16:46,222 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2189 transitions. [2022-11-16 12:16:46,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-16 12:16:46,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:46,226 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-11-16 12:16:46,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 12:16:46,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:46,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:46,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1407928022, now seen corresponding path program 1 times [2022-11-16 12:16:46,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:46,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [898493652] [2022-11-16 12:16:46,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:46,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:46,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-16 12:16:46,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-16 12:16:46,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:46,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:46,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-16 12:16:46,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-16 12:16:46,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-16 12:16:46,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-16 12:16:46,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-16 12:16:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-16 12:16:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-16 12:16:46,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-16 12:16:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-16 12:16:46,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-16 12:16:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-16 12:16:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,620 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-16 12:16:46,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:46,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [898493652] [2022-11-16 12:16:46,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [898493652] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-16 12:16:46,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006084125] [2022-11-16 12:16:46,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:46,621 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-16 12:16:46,622 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:16:46,623 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-16 12:16:46,642 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-16 12:16:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:46,845 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-16 12:16:46,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-16 12:16:47,147 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-11-16 12:16:47,148 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-16 12:16:47,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006084125] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:47,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-16 12:16:47,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2022-11-16 12:16:47,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894208952] [2022-11-16 12:16:47,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:47,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-16 12:16:47,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:47,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-16 12:16:47,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:16:47,152 INFO L87 Difference]: Start difference. First operand 1722 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:16:48,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:48,384 INFO L93 Difference]: Finished difference Result 4048 states and 4997 transitions. [2022-11-16 12:16:48,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-16 12:16:48,385 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2022-11-16 12:16:48,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:48,397 INFO L225 Difference]: With dead ends: 4048 [2022-11-16 12:16:48,397 INFO L226 Difference]: Without dead ends: 2638 [2022-11-16 12:16:48,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2022-11-16 12:16:48,407 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 401 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 751 mSolverCounterSat, 52 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 1184 SdHoareTripleChecker+Invalid, 803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 52 IncrementalHoareTripleChecker+Valid, 751 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:48,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 1184 Invalid, 803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [52 Valid, 751 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-16 12:16:48,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2022-11-16 12:16:48,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2596. [2022-11-16 12:16:48,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238929889298893) internal successors, (2686), 2187 states have internal predecessors, (2686), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-11-16 12:16:48,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3207 transitions. [2022-11-16 12:16:48,693 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3207 transitions. Word has length 162 [2022-11-16 12:16:48,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:48,694 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3207 transitions. [2022-11-16 12:16:48,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-16 12:16:48,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3207 transitions. [2022-11-16 12:16:48,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:16:48,699 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:48,700 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:48,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-16 12:16:48,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1519553b-493b-43b2-b6b9-c9e635fe597e/bin/uautomizer-tPACEb0tL8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-16 12:16:48,906 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:48,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:48,907 INFO L85 PathProgramCache]: Analyzing trace with hash -60640515, now seen corresponding path program 1 times [2022-11-16 12:16:48,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:48,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931754184] [2022-11-16 12:16:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:48,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:48,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:48,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:48,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:16:49,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:49,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:16:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:49,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:16:49,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:49,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:16:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:49,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:49,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:49,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931754184] [2022-11-16 12:16:49,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931754184] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:49,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:49,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:49,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225591813] [2022-11-16 12:16:49,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:49,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:49,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:49,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:49,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:49,163 INFO L87 Difference]: Start difference. First operand 2596 states and 3207 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:53,072 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:53,072 INFO L93 Difference]: Finished difference Result 3150 states and 4107 transitions. [2022-11-16 12:16:53,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:53,073 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:16:53,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:53,082 INFO L225 Difference]: With dead ends: 3150 [2022-11-16 12:16:53,082 INFO L226 Difference]: Without dead ends: 2749 [2022-11-16 12:16:53,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:53,086 INFO L413 NwaCegarLoop]: 445 mSDtfsCounter, 1221 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1254 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1246 SdHoareTripleChecker+Valid, 1037 SdHoareTripleChecker+Invalid, 1346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:53,086 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1246 Valid, 1037 Invalid, 1346 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1254 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:16:53,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2022-11-16 12:16:53,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2022-11-16 12:16:53,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238468634686347) internal successors, (2685), 2187 states have internal predecessors, (2685), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-11-16 12:16:53,677 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3206 transitions. [2022-11-16 12:16:53,678 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3206 transitions. Word has length 190 [2022-11-16 12:16:53,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:53,678 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3206 transitions. [2022-11-16 12:16:53,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:53,679 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3206 transitions. [2022-11-16 12:16:53,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:16:53,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:53,683 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:53,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-16 12:16:53,684 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:53,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:53,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1287493055, now seen corresponding path program 1 times [2022-11-16 12:16:53,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:53,685 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1281667091] [2022-11-16 12:16:53,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:53,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:53,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:53,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:16:53,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:16:53,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:16:53,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:16:53,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:53,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:53,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:53,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1281667091] [2022-11-16 12:16:53,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1281667091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:53,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:53,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-16 12:16:53,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252527120] [2022-11-16 12:16:53,958 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:53,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-16 12:16:53,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:53,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-16 12:16:53,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-16 12:16:53,959 INFO L87 Difference]: Start difference. First operand 2596 states and 3206 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:57,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:16:57,833 INFO L93 Difference]: Finished difference Result 3142 states and 4090 transitions. [2022-11-16 12:16:57,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:16:57,835 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:16:57,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:16:57,846 INFO L225 Difference]: With dead ends: 3142 [2022-11-16 12:16:57,846 INFO L226 Difference]: Without dead ends: 2749 [2022-11-16 12:16:57,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-16 12:16:57,850 INFO L413 NwaCegarLoop]: 444 mSDtfsCounter, 1212 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 1253 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1237 SdHoareTripleChecker+Valid, 1035 SdHoareTripleChecker+Invalid, 1345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:16:57,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1237 Valid, 1035 Invalid, 1345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1253 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-16 12:16:57,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2022-11-16 12:16:58,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2022-11-16 12:16:58,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.2380073800738007) internal successors, (2684), 2187 states have internal predecessors, (2684), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2022-11-16 12:16:58,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3205 transitions. [2022-11-16 12:16:58,501 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3205 transitions. Word has length 190 [2022-11-16 12:16:58,501 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:16:58,501 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3205 transitions. [2022-11-16 12:16:58,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:16:58,502 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3205 transitions. [2022-11-16 12:16:58,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:16:58,506 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:16:58,506 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:16:58,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-16 12:16:58,506 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:16:58,507 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:16:58,507 INFO L85 PathProgramCache]: Analyzing trace with hash 2118146689, now seen corresponding path program 1 times [2022-11-16 12:16:58,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:16:58,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [5201041] [2022-11-16 12:16:58,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:16:58,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:16:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:58,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:16:58,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:58,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:16:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:58,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:16:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:58,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:16:58,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:58,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:16:58,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:16:58,831 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:16:58,832 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:16:58,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [5201041] [2022-11-16 12:16:58,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [5201041] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:16:58,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:16:58,833 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-16 12:16:58,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546635212] [2022-11-16 12:16:58,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:16:58,835 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-16 12:16:58,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:16:58,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-16 12:16:58,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-16 12:16:58,837 INFO L87 Difference]: Start difference. First operand 2596 states and 3205 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:05,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:05,124 INFO L93 Difference]: Finished difference Result 3694 states and 4988 transitions. [2022-11-16 12:17:05,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-16 12:17:05,125 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:05,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:05,135 INFO L225 Difference]: With dead ends: 3694 [2022-11-16 12:17:05,135 INFO L226 Difference]: Without dead ends: 3308 [2022-11-16 12:17:05,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:17:05,139 INFO L413 NwaCegarLoop]: 439 mSDtfsCounter, 1902 mSDsluCounter, 1183 mSDsCounter, 0 mSdLazyCounter, 2714 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1932 SdHoareTripleChecker+Valid, 1622 SdHoareTripleChecker+Invalid, 2868 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 2714 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:05,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1932 Valid, 1622 Invalid, 2868 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 2714 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-16 12:17:05,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2022-11-16 12:17:05,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3001. [2022-11-16 12:17:05,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2544 states have (on average 1.292059748427673) internal successors, (3287), 2564 states have internal predecessors, (3287), 239 states have call successors, (239), 160 states have call predecessors, (239), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2022-11-16 12:17:05,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3855 transitions. [2022-11-16 12:17:05,886 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3855 transitions. Word has length 190 [2022-11-16 12:17:05,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:05,887 INFO L495 AbstractCegarLoop]: Abstraction has 3001 states and 3855 transitions. [2022-11-16 12:17:05,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:05,887 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3855 transitions. [2022-11-16 12:17:05,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:05,891 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:05,891 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:05,892 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-16 12:17:05,892 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:05,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:05,893 INFO L85 PathProgramCache]: Analyzing trace with hash 271120253, now seen corresponding path program 1 times [2022-11-16 12:17:05,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:05,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [334524211] [2022-11-16 12:17:05,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:05,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:05,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:06,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:06,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:06,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:06,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:06,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:06,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [334524211] [2022-11-16 12:17:06,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [334524211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:06,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:06,292 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:06,292 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889602804] [2022-11-16 12:17:06,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:06,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:06,294 INFO L87 Difference]: Start difference. First operand 3001 states and 3855 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:13,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:13,992 INFO L93 Difference]: Finished difference Result 4678 states and 6583 transitions. [2022-11-16 12:17:13,995 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:17:13,995 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:13,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:14,003 INFO L225 Difference]: With dead ends: 4678 [2022-11-16 12:17:14,003 INFO L226 Difference]: Without dead ends: 3887 [2022-11-16 12:17:14,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:17:14,008 INFO L413 NwaCegarLoop]: 663 mSDtfsCounter, 1937 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 4104 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1967 SdHoareTripleChecker+Valid, 2915 SdHoareTripleChecker+Invalid, 4207 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 4104 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:14,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1967 Valid, 2915 Invalid, 4207 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [103 Valid, 4104 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 12:17:14,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2022-11-16 12:17:14,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3377. [2022-11-16 12:17:14,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.325492909028018) internal successors, (3832), 2912 states have internal predecessors, (3832), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2022-11-16 12:17:14,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4446 transitions. [2022-11-16 12:17:14,682 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4446 transitions. Word has length 190 [2022-11-16 12:17:14,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:14,682 INFO L495 AbstractCegarLoop]: Abstraction has 3377 states and 4446 transitions. [2022-11-16 12:17:14,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:14,683 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4446 transitions. [2022-11-16 12:17:14,687 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:14,687 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:14,688 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:14,688 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-16 12:17:14,688 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:14,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:14,689 INFO L85 PathProgramCache]: Analyzing trace with hash -1652130177, now seen corresponding path program 1 times [2022-11-16 12:17:14,689 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:14,689 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508845464] [2022-11-16 12:17:14,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:14,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:14,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:14,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:14,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:15,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:15,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:15,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:15,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:15,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:15,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:15,055 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:15,056 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:15,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [508845464] [2022-11-16 12:17:15,056 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [508845464] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:15,056 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:15,056 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:15,057 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1889027354] [2022-11-16 12:17:15,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:15,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:15,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:15,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:15,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:15,076 INFO L87 Difference]: Start difference. First operand 3377 states and 4446 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:23,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:23,204 INFO L93 Difference]: Finished difference Result 6129 states and 8914 transitions. [2022-11-16 12:17:23,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:17:23,205 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:23,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:23,226 INFO L225 Difference]: With dead ends: 6129 [2022-11-16 12:17:23,226 INFO L226 Difference]: Without dead ends: 4962 [2022-11-16 12:17:23,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:17:23,238 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1935 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 4100 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1965 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 4100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:23,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1965 Valid, 2913 Invalid, 4205 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 4100 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-16 12:17:23,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4962 states. [2022-11-16 12:17:24,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4962 to 4130. [2022-11-16 12:17:24,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3728388176240938) internal successors, (4923), 3609 states have internal predecessors, (4923), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-11-16 12:17:24,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5633 transitions. [2022-11-16 12:17:24,204 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5633 transitions. Word has length 190 [2022-11-16 12:17:24,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:24,205 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5633 transitions. [2022-11-16 12:17:24,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:24,205 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5633 transitions. [2022-11-16 12:17:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:24,209 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:24,210 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:24,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-16 12:17:24,210 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:24,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:24,211 INFO L85 PathProgramCache]: Analyzing trace with hash 918228797, now seen corresponding path program 1 times [2022-11-16 12:17:24,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:24,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1329903209] [2022-11-16 12:17:24,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:24,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:24,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:24,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:24,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:24,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:24,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:24,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:24,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:24,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:24,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:24,566 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1329903209] [2022-11-16 12:17:24,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1329903209] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:24,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:24,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:24,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [400212982] [2022-11-16 12:17:24,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:24,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:24,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:24,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:24,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:24,569 INFO L87 Difference]: Start difference. First operand 4130 states and 5633 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:29,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:29,263 INFO L93 Difference]: Finished difference Result 6870 states and 10092 transitions. [2022-11-16 12:17:29,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:17:29,263 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:29,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:29,284 INFO L225 Difference]: With dead ends: 6870 [2022-11-16 12:17:29,284 INFO L226 Difference]: Without dead ends: 4950 [2022-11-16 12:17:29,292 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:17:29,293 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1539 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 2014 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1570 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 2014 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:29,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1570 Valid, 1606 Invalid, 2121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 2014 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-16 12:17:29,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4950 states. [2022-11-16 12:17:30,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4950 to 4130. [2022-11-16 12:17:30,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3714445064138316) internal successors, (4918), 3609 states have internal predecessors, (4918), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-11-16 12:17:30,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5628 transitions. [2022-11-16 12:17:30,120 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5628 transitions. Word has length 190 [2022-11-16 12:17:30,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:30,120 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5628 transitions. [2022-11-16 12:17:30,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:30,121 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5628 transitions. [2022-11-16 12:17:30,124 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:30,125 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:30,125 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:30,125 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-16 12:17:30,125 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:30,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:30,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1416785599, now seen corresponding path program 1 times [2022-11-16 12:17:30,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:30,126 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926333173] [2022-11-16 12:17:30,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:30,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:30,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:30,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:30,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:30,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:30,448 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:30,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926333173] [2022-11-16 12:17:30,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926333173] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:30,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:30,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:30,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539869556] [2022-11-16 12:17:30,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:30,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:30,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:30,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:30,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:30,453 INFO L87 Difference]: Start difference. First operand 4130 states and 5628 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:34,753 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:34,753 INFO L93 Difference]: Finished difference Result 6864 states and 10066 transitions. [2022-11-16 12:17:34,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:17:34,759 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:34,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:34,777 INFO L225 Difference]: With dead ends: 6864 [2022-11-16 12:17:34,778 INFO L226 Difference]: Without dead ends: 4944 [2022-11-16 12:17:34,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:17:34,786 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1675 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1952 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1706 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 2102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1952 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:34,786 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1706 Valid, 1344 Invalid, 2102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1952 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:17:34,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4944 states. [2022-11-16 12:17:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4944 to 4130. [2022-11-16 12:17:35,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3700501952035695) internal successors, (4913), 3609 states have internal predecessors, (4913), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-11-16 12:17:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5623 transitions. [2022-11-16 12:17:35,568 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5623 transitions. Word has length 190 [2022-11-16 12:17:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:35,568 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5623 transitions. [2022-11-16 12:17:35,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:35,569 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5623 transitions. [2022-11-16 12:17:35,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:35,571 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:35,571 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:35,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-16 12:17:35,572 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:35,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:35,572 INFO L85 PathProgramCache]: Analyzing trace with hash 1987057405, now seen corresponding path program 1 times [2022-11-16 12:17:35,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:35,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [95794514] [2022-11-16 12:17:35,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:35,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:35,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:35,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:35,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:35,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:35,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:35,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:35,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:35,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:35,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [95794514] [2022-11-16 12:17:35,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [95794514] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:35,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:35,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396064162] [2022-11-16 12:17:35,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:35,905 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:35,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:35,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:35,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:35,906 INFO L87 Difference]: Start difference. First operand 4130 states and 5623 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:40,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:40,234 INFO L93 Difference]: Finished difference Result 6852 states and 10028 transitions. [2022-11-16 12:17:40,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:17:40,235 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:40,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:40,252 INFO L225 Difference]: With dead ends: 6852 [2022-11-16 12:17:40,252 INFO L226 Difference]: Without dead ends: 4932 [2022-11-16 12:17:40,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:17:40,259 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1671 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1932 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1702 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:40,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1702 Valid, 1344 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1932 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:17:40,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4932 states. [2022-11-16 12:17:41,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4932 to 4130. [2022-11-16 12:17:41,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4130 states, 3586 states have (on average 1.3686558839933074) internal successors, (4908), 3609 states have internal predecessors, (4908), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2022-11-16 12:17:41,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4130 states to 4130 states and 5618 transitions. [2022-11-16 12:17:41,261 INFO L78 Accepts]: Start accepts. Automaton has 4130 states and 5618 transitions. Word has length 190 [2022-11-16 12:17:41,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:41,261 INFO L495 AbstractCegarLoop]: Abstraction has 4130 states and 5618 transitions. [2022-11-16 12:17:41,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:41,262 INFO L276 IsEmpty]: Start isEmpty. Operand 4130 states and 5618 transitions. [2022-11-16 12:17:41,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:41,265 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:41,265 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:41,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-16 12:17:41,266 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:41,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:41,267 INFO L85 PathProgramCache]: Analyzing trace with hash 1201059515, now seen corresponding path program 1 times [2022-11-16 12:17:41,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:41,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441336890] [2022-11-16 12:17:41,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:41,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:41,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:41,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:41,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:41,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:41,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:41,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:41,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:41,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:41,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:41,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:41,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:41,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441336890] [2022-11-16 12:17:41,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441336890] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:41,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:41,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:41,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171602838] [2022-11-16 12:17:41,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:41,626 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:41,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:41,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:41,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:41,627 INFO L87 Difference]: Start difference. First operand 4130 states and 5618 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:50,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:50,315 INFO L93 Difference]: Finished difference Result 8893 states and 13249 transitions. [2022-11-16 12:17:50,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:17:50,316 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:50,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:50,336 INFO L225 Difference]: With dead ends: 8893 [2022-11-16 12:17:50,337 INFO L226 Difference]: Without dead ends: 6973 [2022-11-16 12:17:50,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:17:50,344 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1914 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3994 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1944 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:50,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1944 Valid, 2913 Invalid, 4099 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 3994 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 12:17:50,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6973 states. [2022-11-16 12:17:51,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6973 to 5655. [2022-11-16 12:17:51,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 4995 states have (on average 1.4222222222222223) internal successors, (7104), 5022 states have internal predecessors, (7104), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-11-16 12:17:51,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8012 transitions. [2022-11-16 12:17:51,617 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8012 transitions. Word has length 190 [2022-11-16 12:17:51,617 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:51,617 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8012 transitions. [2022-11-16 12:17:51,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:51,617 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8012 transitions. [2022-11-16 12:17:51,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:51,621 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:51,622 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:51,622 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-16 12:17:51,622 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:51,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:51,623 INFO L85 PathProgramCache]: Analyzing trace with hash 1868441405, now seen corresponding path program 1 times [2022-11-16 12:17:51,623 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:51,623 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208195532] [2022-11-16 12:17:51,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:51,624 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:51,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:51,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:51,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:51,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:51,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:51,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:51,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:51,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:51,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:51,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:51,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:51,946 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:51,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1208195532] [2022-11-16 12:17:51,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1208195532] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:51,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:51,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:51,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004751983] [2022-11-16 12:17:51,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:51,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:51,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:51,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:51,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:51,950 INFO L87 Difference]: Start difference. First operand 5655 states and 8012 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:56,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:17:56,784 INFO L93 Difference]: Finished difference Result 10442 states and 15719 transitions. [2022-11-16 12:17:56,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:17:56,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:17:56,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:17:56,804 INFO L225 Difference]: With dead ends: 10442 [2022-11-16 12:17:56,804 INFO L226 Difference]: Without dead ends: 6997 [2022-11-16 12:17:56,818 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:17:56,821 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1670 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1910 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1701 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 2060 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1910 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-16 12:17:56,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1701 Valid, 1344 Invalid, 2060 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1910 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-16 12:17:56,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2022-11-16 12:17:58,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 5655. [2022-11-16 12:17:58,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5655 states, 4995 states have (on average 1.4204204204204205) internal successors, (7095), 5022 states have internal predecessors, (7095), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2022-11-16 12:17:58,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5655 states to 5655 states and 8003 transitions. [2022-11-16 12:17:58,150 INFO L78 Accepts]: Start accepts. Automaton has 5655 states and 8003 transitions. Word has length 190 [2022-11-16 12:17:58,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:17:58,151 INFO L495 AbstractCegarLoop]: Abstraction has 5655 states and 8003 transitions. [2022-11-16 12:17:58,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:17:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 5655 states and 8003 transitions. [2022-11-16 12:17:58,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:17:58,154 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:17:58,155 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:17:58,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-16 12:17:58,156 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:17:58,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:17:58,156 INFO L85 PathProgramCache]: Analyzing trace with hash -326787461, now seen corresponding path program 1 times [2022-11-16 12:17:58,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:17:58,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936208497] [2022-11-16 12:17:58,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:17:58,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:17:58,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:58,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:17:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:58,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:17:58,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:58,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:17:58,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:58,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:17:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:58,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:17:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:17:58,530 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:17:58,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:17:58,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936208497] [2022-11-16 12:17:58,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [936208497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:17:58,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:17:58,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:17:58,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268350677] [2022-11-16 12:17:58,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:17:58,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:17:58,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:17:58,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:17:58,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:17:58,534 INFO L87 Difference]: Start difference. First operand 5655 states and 8003 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:08,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:08,346 INFO L93 Difference]: Finished difference Result 14462 states and 22041 transitions. [2022-11-16 12:18:08,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:18:08,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:18:08,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:08,381 INFO L225 Difference]: With dead ends: 14462 [2022-11-16 12:18:08,381 INFO L226 Difference]: Without dead ends: 11017 [2022-11-16 12:18:08,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:18:08,394 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1906 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3956 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1936 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 4061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:08,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1936 Valid, 2913 Invalid, 4061 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 3956 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 12:18:08,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11017 states. [2022-11-16 12:18:10,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11017 to 8713. [2022-11-16 12:18:10,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4682265694923924) internal successors, (11483), 7856 states have internal predecessors, (11483), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-11-16 12:18:10,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12805 transitions. [2022-11-16 12:18:10,526 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12805 transitions. Word has length 190 [2022-11-16 12:18:10,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:10,527 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12805 transitions. [2022-11-16 12:18:10,527 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:10,527 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12805 transitions. [2022-11-16 12:18:10,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:18:10,531 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:10,531 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:10,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-16 12:18:10,531 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:10,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:10,532 INFO L85 PathProgramCache]: Analyzing trace with hash 18040701, now seen corresponding path program 1 times [2022-11-16 12:18:10,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:10,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [160410357] [2022-11-16 12:18:10,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:10,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:10,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:18:10,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:10,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:18:10,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:10,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:18:10,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:10,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:18:10,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:10,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:18:10,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:10,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:10,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:10,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [160410357] [2022-11-16 12:18:10,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [160410357] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:10,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:10,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:18:10,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153618779] [2022-11-16 12:18:10,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:10,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:18:10,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:10,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:18:10,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:18:10,861 INFO L87 Difference]: Start difference. First operand 8713 states and 12805 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:17,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:17,376 INFO L93 Difference]: Finished difference Result 17610 states and 27094 transitions. [2022-11-16 12:18:17,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:18:17,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:18:17,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:17,402 INFO L225 Difference]: With dead ends: 17610 [2022-11-16 12:18:17,402 INFO L226 Difference]: Without dead ends: 11107 [2022-11-16 12:18:17,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:18:17,416 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1669 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1888 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1700 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 2038 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 1888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:17,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1700 Valid, 1344 Invalid, 2038 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 1888 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:18:17,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11107 states. [2022-11-16 12:18:19,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11107 to 8713. [2022-11-16 12:18:19,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4660529344073647) internal successors, (11466), 7856 states have internal predecessors, (11466), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-11-16 12:18:19,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12788 transitions. [2022-11-16 12:18:19,511 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12788 transitions. Word has length 190 [2022-11-16 12:18:19,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:19,511 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12788 transitions. [2022-11-16 12:18:19,511 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:19,511 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12788 transitions. [2022-11-16 12:18:19,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:18:19,516 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:19,517 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:19,517 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-16 12:18:19,517 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:19,518 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:19,518 INFO L85 PathProgramCache]: Analyzing trace with hash 998995515, now seen corresponding path program 1 times [2022-11-16 12:18:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:19,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43830493] [2022-11-16 12:18:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:19,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:19,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:18:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:19,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:18:19,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:19,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:18:19,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:18:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:18:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:19,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:19,836 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:19,836 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43830493] [2022-11-16 12:18:19,836 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43830493] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:19,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:19,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:18:19,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695187726] [2022-11-16 12:18:19,837 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:19,837 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:18:19,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:19,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:18:19,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:18:19,839 INFO L87 Difference]: Start difference. First operand 8713 states and 12788 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:26,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:26,922 INFO L93 Difference]: Finished difference Result 17592 states and 27007 transitions. [2022-11-16 12:18:26,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:18:26,922 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:18:26,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:26,946 INFO L225 Difference]: With dead ends: 17592 [2022-11-16 12:18:26,946 INFO L226 Difference]: Without dead ends: 11089 [2022-11-16 12:18:26,958 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:18:26,958 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1503 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1949 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1534 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 2056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 1949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:26,958 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1534 Valid, 1606 Invalid, 2056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [107 Valid, 1949 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-16 12:18:26,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11089 states. [2022-11-16 12:18:29,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11089 to 8713. [2022-11-16 12:18:29,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8713 states, 7821 states have (on average 1.4638792993223373) internal successors, (11449), 7856 states have internal predecessors, (11449), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2022-11-16 12:18:29,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8713 states to 8713 states and 12771 transitions. [2022-11-16 12:18:29,156 INFO L78 Accepts]: Start accepts. Automaton has 8713 states and 12771 transitions. Word has length 190 [2022-11-16 12:18:29,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:29,157 INFO L495 AbstractCegarLoop]: Abstraction has 8713 states and 12771 transitions. [2022-11-16 12:18:29,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:29,157 INFO L276 IsEmpty]: Start isEmpty. Operand 8713 states and 12771 transitions. [2022-11-16 12:18:29,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:18:29,161 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:29,161 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:29,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-16 12:18:29,162 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:29,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:29,162 INFO L85 PathProgramCache]: Analyzing trace with hash -770476099, now seen corresponding path program 1 times [2022-11-16 12:18:29,162 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:29,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229530408] [2022-11-16 12:18:29,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:29,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:29,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:18:29,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:18:29,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:18:29,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:18:29,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:18:29,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:29,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:29,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:29,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229530408] [2022-11-16 12:18:29,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229530408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:29,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:29,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:18:29,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1285872318] [2022-11-16 12:18:29,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:29,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:18:29,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:29,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:18:29,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:18:29,519 INFO L87 Difference]: Start difference. First operand 8713 states and 12771 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:42,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:42,751 INFO L93 Difference]: Finished difference Result 25578 states and 39513 transitions. [2022-11-16 12:18:42,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-16 12:18:42,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:18:42,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:42,809 INFO L225 Difference]: With dead ends: 25578 [2022-11-16 12:18:42,809 INFO L226 Difference]: Without dead ends: 19075 [2022-11-16 12:18:42,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-16 12:18:42,829 INFO L413 NwaCegarLoop]: 661 mSDtfsCounter, 1897 mSDsluCounter, 2252 mSDsCounter, 0 mSdLazyCounter, 3888 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1927 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 3993 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3888 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:42,829 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1927 Valid, 2913 Invalid, 3993 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [105 Valid, 3888 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-11-16 12:18:42,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19075 states. [2022-11-16 12:18:46,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19075 to 14876. [2022-11-16 12:18:46,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 13520 states have (on average 1.497559171597633) internal successors, (20247), 13571 states have internal predecessors, (20247), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2022-11-16 12:18:46,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 22451 transitions. [2022-11-16 12:18:46,534 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 22451 transitions. Word has length 190 [2022-11-16 12:18:46,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:18:46,534 INFO L495 AbstractCegarLoop]: Abstraction has 14876 states and 22451 transitions. [2022-11-16 12:18:46,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:46,535 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 22451 transitions. [2022-11-16 12:18:46,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:18:46,543 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:18:46,544 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:18:46,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-16 12:18:46,544 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:18:46,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:18:46,545 INFO L85 PathProgramCache]: Analyzing trace with hash -1381745157, now seen corresponding path program 1 times [2022-11-16 12:18:46,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:18:46,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956692388] [2022-11-16 12:18:46,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:18:46,546 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:18:46,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:46,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:18:46,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:46,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:18:46,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:46,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:18:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:46,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:18:46,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:46,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:18:46,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:18:46,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:18:46,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:18:46,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956692388] [2022-11-16 12:18:46,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956692388] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:18:46,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:18:46,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:18:46,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379920314] [2022-11-16 12:18:46,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:18:46,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:18:46,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:18:46,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:18:46,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:18:46,860 INFO L87 Difference]: Start difference. First operand 14876 states and 22451 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:18:56,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:18:56,708 INFO L93 Difference]: Finished difference Result 31896 states and 49714 transitions. [2022-11-16 12:18:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-16 12:18:56,709 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:18:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:18:56,757 INFO L225 Difference]: With dead ends: 31896 [2022-11-16 12:18:56,757 INFO L226 Difference]: Without dead ends: 19230 [2022-11-16 12:18:56,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-16 12:18:56,788 INFO L413 NwaCegarLoop]: 387 mSDtfsCounter, 1668 mSDsluCounter, 955 mSDsCounter, 0 mSdLazyCounter, 1843 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1342 SdHoareTripleChecker+Invalid, 1995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 1843 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-16 12:18:56,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1342 Invalid, 1995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 1843 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-16 12:18:56,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19230 states. [2022-11-16 12:19:00,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19230 to 14876. [2022-11-16 12:19:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14876 states, 13520 states have (on average 1.4951183431952664) internal successors, (20214), 13571 states have internal predecessors, (20214), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2022-11-16 12:19:00,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14876 states to 14876 states and 22418 transitions. [2022-11-16 12:19:00,760 INFO L78 Accepts]: Start accepts. Automaton has 14876 states and 22418 transitions. Word has length 190 [2022-11-16 12:19:00,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:00,760 INFO L495 AbstractCegarLoop]: Abstraction has 14876 states and 22418 transitions. [2022-11-16 12:19:00,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:19:00,760 INFO L276 IsEmpty]: Start isEmpty. Operand 14876 states and 22418 transitions. [2022-11-16 12:19:00,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:19:00,766 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:00,766 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:00,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-16 12:19:00,766 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:00,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:00,767 INFO L85 PathProgramCache]: Analyzing trace with hash 512588729, now seen corresponding path program 1 times [2022-11-16 12:19:00,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:00,767 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886486952] [2022-11-16 12:19:00,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:00,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:00,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:00,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:19:00,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:00,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:19:00,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:01,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:19:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:01,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:19:01,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:01,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:19:01,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:01,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:01,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:01,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886486952] [2022-11-16 12:19:01,120 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886486952] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:01,120 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:01,120 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:19:01,120 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [585398875] [2022-11-16 12:19:01,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:01,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:19:01,121 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:01,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:19:01,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:19:01,123 INFO L87 Difference]: Start difference. First operand 14876 states and 22418 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:19:25,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:19:25,539 INFO L93 Difference]: Finished difference Result 53543 states and 83505 transitions. [2022-11-16 12:19:25,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:19:25,540 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:19:25,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:19:25,653 INFO L225 Difference]: With dead ends: 53543 [2022-11-16 12:19:25,653 INFO L226 Difference]: Without dead ends: 40877 [2022-11-16 12:19:25,683 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:19:25,683 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 2370 mSDsluCounter, 2241 mSDsCounter, 0 mSdLazyCounter, 3828 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2414 SdHoareTripleChecker+Valid, 2899 SdHoareTripleChecker+Invalid, 3938 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3828 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:19:25,684 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2414 Valid, 2899 Invalid, 3938 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [110 Valid, 3828 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2022-11-16 12:19:25,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40877 states. [2022-11-16 12:19:33,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40877 to 26943. [2022-11-16 12:19:34,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26943 states, 24691 states have (on average 1.5148839658175044) internal successors, (37404), 24774 states have internal predecessors, (37404), 1593 states have call successors, (1593), 538 states have call predecessors, (1593), 657 states have return successors, (2473), 1694 states have call predecessors, (2473), 1590 states have call successors, (2473) [2022-11-16 12:19:34,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26943 states to 26943 states and 41470 transitions. [2022-11-16 12:19:34,083 INFO L78 Accepts]: Start accepts. Automaton has 26943 states and 41470 transitions. Word has length 190 [2022-11-16 12:19:34,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:19:34,083 INFO L495 AbstractCegarLoop]: Abstraction has 26943 states and 41470 transitions. [2022-11-16 12:19:34,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:19:34,083 INFO L276 IsEmpty]: Start isEmpty. Operand 26943 states and 41470 transitions. [2022-11-16 12:19:34,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:19:34,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:19:34,200 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:19:34,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-16 12:19:34,200 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:19:34,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:34,201 INFO L85 PathProgramCache]: Analyzing trace with hash 1959169595, now seen corresponding path program 1 times [2022-11-16 12:19:34,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:34,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1938677712] [2022-11-16 12:19:34,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:34,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:34,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:34,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:19:34,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:19:34,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:19:34,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:34,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:19:34,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:34,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:19:34,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:19:34,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:19:34,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:19:34,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1938677712] [2022-11-16 12:19:34,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1938677712] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:19:34,532 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:19:34,532 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:19:34,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983110418] [2022-11-16 12:19:34,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:19:34,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:19:34,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:19:34,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:19:34,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:19:34,534 INFO L87 Difference]: Start difference. First operand 26943 states and 41470 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:20:17,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-16 12:20:17,531 INFO L93 Difference]: Finished difference Result 101992 states and 160555 transitions. [2022-11-16 12:20:17,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-16 12:20:17,532 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 190 [2022-11-16 12:20:17,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-16 12:20:17,753 INFO L225 Difference]: With dead ends: 101992 [2022-11-16 12:20:17,753 INFO L226 Difference]: Without dead ends: 77259 [2022-11-16 12:20:17,809 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-16 12:20:17,810 INFO L413 NwaCegarLoop]: 659 mSDtfsCounter, 1997 mSDsluCounter, 2244 mSDsCounter, 0 mSdLazyCounter, 4563 mSolverCounterSat, 107 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2026 SdHoareTripleChecker+Valid, 2903 SdHoareTripleChecker+Invalid, 4670 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 107 IncrementalHoareTripleChecker+Valid, 4563 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-11-16 12:20:17,810 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2026 Valid, 2903 Invalid, 4670 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [107 Valid, 4563 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-11-16 12:20:17,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77259 states. [2022-11-16 12:20:34,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77259 to 51296. [2022-11-16 12:20:34,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51296 states, 47284 states have (on average 1.528085610354454) internal successors, (72254), 47431 states have internal predecessors, (72254), 2905 states have call successors, (2905), 922 states have call predecessors, (2905), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2022-11-16 12:20:35,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51296 states to 51296 states and 80466 transitions. [2022-11-16 12:20:35,015 INFO L78 Accepts]: Start accepts. Automaton has 51296 states and 80466 transitions. Word has length 190 [2022-11-16 12:20:35,015 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-16 12:20:35,015 INFO L495 AbstractCegarLoop]: Abstraction has 51296 states and 80466 transitions. [2022-11-16 12:20:35,016 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-16 12:20:35,016 INFO L276 IsEmpty]: Start isEmpty. Operand 51296 states and 80466 transitions. [2022-11-16 12:20:35,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2022-11-16 12:20:35,038 INFO L187 NwaCegarLoop]: Found error trace [2022-11-16 12:20:35,038 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 12:20:35,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-16 12:20:35,039 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-16 12:20:35,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:20:35,039 INFO L85 PathProgramCache]: Analyzing trace with hash 1036002169, now seen corresponding path program 1 times [2022-11-16 12:20:35,039 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:20:35,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210371662] [2022-11-16 12:20:35,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:20:35,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:20:35,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:35,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-16 12:20:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:35,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-11-16 12:20:35,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:35,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-11-16 12:20:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:35,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-11-16 12:20:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:35,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-11-16 12:20:35,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 12:20:35,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 12:20:35,331 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 12:20:35,331 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210371662] [2022-11-16 12:20:35,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [210371662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 12:20:35,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 12:20:35,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 12:20:35,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900313227] [2022-11-16 12:20:35,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 12:20:35,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 12:20:35,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 12:20:35,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 12:20:35,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-16 12:20:35,334 INFO L87 Difference]: Start difference. First operand 51296 states and 80466 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)