./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8 --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 bd466f23ab481babcc03c4173983e1af9100c535496f2e2f8c8fc18a8aaf4174 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-2329fc7 [2022-12-13 15:18:41,230 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 15:18:41,232 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 15:18:41,251 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 15:18:41,251 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 15:18:41,252 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 15:18:41,254 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 15:18:41,256 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 15:18:41,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 15:18:41,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 15:18:41,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 15:18:41,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 15:18:41,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 15:18:41,262 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 15:18:41,263 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 15:18:41,265 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 15:18:41,265 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 15:18:41,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 15:18:41,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 15:18:41,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 15:18:41,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 15:18:41,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 15:18:41,274 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 15:18:41,275 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 15:18:41,279 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 15:18:41,279 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 15:18:41,279 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 15:18:41,281 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 15:18:41,281 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 15:18:41,282 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 15:18:41,282 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 15:18:41,283 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 15:18:41,284 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 15:18:41,284 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 15:18:41,285 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 15:18:41,285 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 15:18:41,286 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 15:18:41,286 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 15:18:41,286 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 15:18:41,287 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 15:18:41,287 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 15:18:41,288 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-12-13 15:18:41,311 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 15:18:41,311 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 15:18:41,312 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 15:18:41,312 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 15:18:41,313 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 15:18:41,313 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 15:18:41,313 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 15:18:41,314 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 15:18:41,314 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 15:18:41,314 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 15:18:41,314 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 15:18:41,314 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 15:18:41,314 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 15:18:41,315 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 15:18:41,315 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-13 15:18:41,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 15:18:41,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-13 15:18:41,315 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 15:18:41,315 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-13 15:18:41,315 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 15:18:41,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-13 15:18:41,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 15:18:41,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 15:18:41,316 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 15:18:41,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:18:41,316 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 15:18:41,316 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 15:18:41,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-13 15:18:41,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 15:18:41,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 15:18:41,317 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 15:18:41,317 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-13 15:18:41,317 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 15:18:41,317 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 15:18:41,317 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 15:18:41,318 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bd466f23ab481babcc03c4173983e1af9100c535496f2e2f8c8fc18a8aaf4174 [2022-12-13 15:18:41,503 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 15:18:41,521 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 15:18:41,523 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 15:18:41,524 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 15:18:41,525 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 15:18:41,526 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-12-13 15:18:44,026 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 15:18:44,208 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 15:18:44,208 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-12-13 15:18:44,216 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/data/ad6b5da1b/ca5d3f4984534c65a129b48f3ccb4476/FLAG0cf6e0858 [2022-12-13 15:18:44,613 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/data/ad6b5da1b/ca5d3f4984534c65a129b48f3ccb4476 [2022-12-13 15:18:44,615 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 15:18:44,616 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 15:18:44,617 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 15:18:44,617 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 15:18:44,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 15:18:44,620 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:44,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8adce4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44, skipping insertion in model container [2022-12-13 15:18:44,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:44,627 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 15:18:44,659 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 15:18:44,768 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[911,924] [2022-12-13 15:18:44,816 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[8416,8429] [2022-12-13 15:18:44,859 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:18:44,870 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 15:18:44,878 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[911,924] [2022-12-13 15:18:44,895 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.04.cil-2.c[8416,8429] [2022-12-13 15:18:44,920 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 15:18:44,939 INFO L208 MainTranslator]: Completed translation [2022-12-13 15:18:44,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44 WrapperNode [2022-12-13 15:18:44,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 15:18:44,940 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 15:18:44,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 15:18:44,941 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 15:18:44,948 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:44,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:44,984 INFO L138 Inliner]: procedures = 63, calls = 74, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 619 [2022-12-13 15:18:44,985 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 15:18:44,985 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 15:18:44,986 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 15:18:44,986 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 15:18:44,993 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:44,993 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:44,996 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:44,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:45,003 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:45,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:45,011 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:45,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:45,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 15:18:45,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 15:18:45,017 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 15:18:45,017 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 15:18:45,018 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (1/1) ... [2022-12-13 15:18:45,024 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 15:18:45,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:18:45,047 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 15:18:45,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 15:18:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 15:18:45,082 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-12-13 15:18:45,083 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-12-13 15:18:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-12-13 15:18:45,083 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-12-13 15:18:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-12-13 15:18:45,083 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-12-13 15:18:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-12-13 15:18:45,083 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-12-13 15:18:45,083 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-12-13 15:18:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-12-13 15:18:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-12-13 15:18:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-12-13 15:18:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-12-13 15:18:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-12-13 15:18:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-12-13 15:18:45,084 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-12-13 15:18:45,084 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-12-13 15:18:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-12-13 15:18:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-12-13 15:18:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-12-13 15:18:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-12-13 15:18:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-12-13 15:18:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-13 15:18:45,085 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-12-13 15:18:45,085 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-12-13 15:18:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-12-13 15:18:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-12-13 15:18:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 15:18:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 15:18:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-12-13 15:18:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-12-13 15:18:45,086 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-12-13 15:18:45,086 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-12-13 15:18:45,174 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 15:18:45,177 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 15:18:45,619 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-12-13 15:18:45,619 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-12-13 15:18:45,666 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 15:18:45,676 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 15:18:45,676 INFO L300 CfgBuilder]: Removed 11 assume(true) statements. [2022-12-13 15:18:45,678 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:18:45 BoogieIcfgContainer [2022-12-13 15:18:45,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 15:18:45,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 15:18:45,682 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 15:18:45,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 15:18:45,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 03:18:44" (1/3) ... [2022-12-13 15:18:45,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db0b276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:18:45, skipping insertion in model container [2022-12-13 15:18:45,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 03:18:44" (2/3) ... [2022-12-13 15:18:45,699 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6db0b276 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 03:18:45, skipping insertion in model container [2022-12-13 15:18:45,699 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 03:18:45" (3/3) ... [2022-12-13 15:18:45,701 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.04.cil-2.c [2022-12-13 15:18:45,720 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 15:18:45,720 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-12-13 15:18:45,777 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 15:18:45,784 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;@10cf00f7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 15:18:45,784 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-12-13 15:18:45,790 INFO L276 IsEmpty]: Start isEmpty. Operand has 307 states, 253 states have (on average 1.592885375494071) internal successors, (403), 261 states have internal predecessors, (403), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) [2022-12-13 15:18:45,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 15:18:45,802 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:45,802 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] [2022-12-13 15:18:45,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:45,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:45,808 INFO L85 PathProgramCache]: Analyzing trace with hash 101820907, now seen corresponding path program 1 times [2022-12-13 15:18:45,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:45,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48314380] [2022-12-13 15:18:45,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:45,817 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:45,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:46,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:46,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:46,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:46,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 15:18:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 15:18:46,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:18:46,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:46,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:46,275 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:46,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [48314380] [2022-12-13 15:18:46,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [48314380] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:46,276 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:46,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 15:18:46,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473450775] [2022-12-13 15:18:46,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:46,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:18:46,281 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:46,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:18:46,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:18:46,305 INFO L87 Difference]: Start difference. First operand has 307 states, 253 states have (on average 1.592885375494071) internal successors, (403), 261 states have internal predecessors, (403), 36 states have call successors, (36), 15 states have call predecessors, (36), 15 states have return successors, (36), 34 states have call predecessors, (36), 36 states have call successors, (36) 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) [2022-12-13 15:18:47,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:47,374 INFO L93 Difference]: Finished difference Result 779 states and 1210 transitions. [2022-12-13 15:18:47,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-13 15:18:47,376 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 [2022-12-13 15:18:47,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:47,385 INFO L225 Difference]: With dead ends: 779 [2022-12-13 15:18:47,386 INFO L226 Difference]: Without dead ends: 482 [2022-12-13 15:18:47,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 59 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-12-13 15:18:47,391 INFO L413 NwaCegarLoop]: 343 mSDtfsCounter, 867 mSDsluCounter, 1421 mSDsCounter, 0 mSdLazyCounter, 1338 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 892 SdHoareTripleChecker+Valid, 1764 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 1338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:47,392 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [892 Valid, 1764 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 1338 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 15:18:47,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 482 states. [2022-12-13 15:18:47,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 482 to 412. [2022-12-13 15:18:47,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 412 states, 338 states have (on average 1.4881656804733727) internal successors, (503), 346 states have internal predecessors, (503), 49 states have call successors, (49), 22 states have call predecessors, (49), 23 states have return successors, (56), 46 states have call predecessors, (56), 45 states have call successors, (56) [2022-12-13 15:18:47,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 412 states to 412 states and 608 transitions. [2022-12-13 15:18:47,475 INFO L78 Accepts]: Start accepts. Automaton has 412 states and 608 transitions. Word has length 65 [2022-12-13 15:18:47,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:47,475 INFO L495 AbstractCegarLoop]: Abstraction has 412 states and 608 transitions. [2022-12-13 15:18:47,476 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) [2022-12-13 15:18:47,476 INFO L276 IsEmpty]: Start isEmpty. Operand 412 states and 608 transitions. [2022-12-13 15:18:47,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-12-13 15:18:47,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:47,479 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] [2022-12-13 15:18:47,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-13 15:18:47,480 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:47,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:47,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1926765203, now seen corresponding path program 1 times [2022-12-13 15:18:47,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:47,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010429132] [2022-12-13 15:18:47,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:47,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:47,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:47,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:47,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:47,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 15:18:47,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-12-13 15:18:47,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-12-13 15:18:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:47,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:47,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:47,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010429132] [2022-12-13 15:18:47,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010429132] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:47,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:47,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:18:47,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092121110] [2022-12-13 15:18:47,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:47,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:18:47,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:47,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:18:47,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:18:47,647 INFO L87 Difference]: Start difference. First operand 412 states and 608 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-13 15:18:49,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:49,197 INFO L93 Difference]: Finished difference Result 1505 states and 2187 transitions. [2022-12-13 15:18:49,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 15:18:49,198 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-12-13 15:18:49,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:49,206 INFO L225 Difference]: With dead ends: 1505 [2022-12-13 15:18:49,206 INFO L226 Difference]: Without dead ends: 1280 [2022-12-13 15:18:49,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 15:18:49,211 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 2508 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 1950 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2526 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 2491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 1950 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:49,211 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2526 Valid, 2153 Invalid, 2491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 1950 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:18:49,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1280 states. [2022-12-13 15:18:49,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1280 to 1184. [2022-12-13 15:18:49,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1184 states, 956 states have (on average 1.4142259414225942) internal successors, (1352), 977 states have internal predecessors, (1352), 132 states have call successors, (132), 82 states have call predecessors, (132), 94 states have return successors, (161), 127 states have call predecessors, (161), 128 states have call successors, (161) [2022-12-13 15:18:49,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1184 states to 1184 states and 1645 transitions. [2022-12-13 15:18:49,304 INFO L78 Accepts]: Start accepts. Automaton has 1184 states and 1645 transitions. Word has length 65 [2022-12-13 15:18:49,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:49,305 INFO L495 AbstractCegarLoop]: Abstraction has 1184 states and 1645 transitions. [2022-12-13 15:18:49,305 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), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-12-13 15:18:49,305 INFO L276 IsEmpty]: Start isEmpty. Operand 1184 states and 1645 transitions. [2022-12-13 15:18:49,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 15:18:49,309 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:49,309 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] [2022-12-13 15:18:49,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-13 15:18:49,310 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:49,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:49,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1082356585, now seen corresponding path program 1 times [2022-12-13 15:18:49,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:49,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547487212] [2022-12-13 15:18:49,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:49,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:49,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:49,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:49,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:49,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:49,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:18:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 15:18:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:49,470 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:49,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:49,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547487212] [2022-12-13 15:18:49,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547487212] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:49,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:49,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:18:49,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055910931] [2022-12-13 15:18:49,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:49,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:18:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:49,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:18:49,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:18:49,472 INFO L87 Difference]: Start difference. First operand 1184 states and 1645 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-12-13 15:18:50,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:50,269 INFO L93 Difference]: Finished difference Result 2284 states and 3169 transitions. [2022-12-13 15:18:50,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:18:50,269 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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 66 [2022-12-13 15:18:50,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:50,279 INFO L225 Difference]: With dead ends: 2284 [2022-12-13 15:18:50,279 INFO L226 Difference]: Without dead ends: 1294 [2022-12-13 15:18:50,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:18:50,284 INFO L413 NwaCegarLoop]: 270 mSDtfsCounter, 352 mSDsluCounter, 1519 mSDsCounter, 0 mSdLazyCounter, 1231 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 1312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 1231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:50,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 1789 Invalid, 1312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 1231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-12-13 15:18:50,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1294 states. [2022-12-13 15:18:50,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1294 to 1224. [2022-12-13 15:18:50,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 988 states have (on average 1.3987854251012146) internal successors, (1382), 1009 states have internal predecessors, (1382), 132 states have call successors, (132), 82 states have call predecessors, (132), 102 states have return successors, (169), 135 states have call predecessors, (169), 128 states have call successors, (169) [2022-12-13 15:18:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 1683 transitions. [2022-12-13 15:18:50,379 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 1683 transitions. Word has length 66 [2022-12-13 15:18:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:50,379 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 1683 transitions. [2022-12-13 15:18:50,379 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 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) [2022-12-13 15:18:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 1683 transitions. [2022-12-13 15:18:50,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-12-13 15:18:50,382 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:50,383 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] [2022-12-13 15:18:50,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-13 15:18:50,383 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:50,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:50,383 INFO L85 PathProgramCache]: Analyzing trace with hash -2111715883, now seen corresponding path program 1 times [2022-12-13 15:18:50,384 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:50,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681825124] [2022-12-13 15:18:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:50,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:50,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:50,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:50,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:50,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:50,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-12-13 15:18:50,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-12-13 15:18:50,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:50,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:50,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:50,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681825124] [2022-12-13 15:18:50,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681825124] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:50,518 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:50,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-12-13 15:18:50,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645283222] [2022-12-13 15:18:50,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:50,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 15:18:50,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:50,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 15:18:50,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-12-13 15:18:50,519 INFO L87 Difference]: Start difference. First operand 1224 states and 1683 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-12-13 15:18:52,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:52,083 INFO L93 Difference]: Finished difference Result 3894 states and 5384 transitions. [2022-12-13 15:18:52,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-12-13 15:18:52,083 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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 66 [2022-12-13 15:18:52,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:52,089 INFO L225 Difference]: With dead ends: 3894 [2022-12-13 15:18:52,089 INFO L226 Difference]: Without dead ends: 1614 [2022-12-13 15:18:52,093 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 340 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 15:18:52,094 INFO L413 NwaCegarLoop]: 368 mSDtfsCounter, 2642 mSDsluCounter, 1674 mSDsCounter, 0 mSdLazyCounter, 1855 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2660 SdHoareTripleChecker+Valid, 2042 SdHoareTripleChecker+Invalid, 2428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 1855 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:52,094 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2660 Valid, 2042 Invalid, 2428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 1855 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:18:52,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1614 states. [2022-12-13 15:18:52,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1614 to 1490. [2022-12-13 15:18:52,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1490 states, 1178 states have (on average 1.3556876061120544) internal successors, (1597), 1203 states have internal predecessors, (1597), 172 states have call successors, (172), 110 states have call predecessors, (172), 138 states have return successors, (221), 179 states have call predecessors, (221), 168 states have call successors, (221) [2022-12-13 15:18:52,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1490 states to 1490 states and 1990 transitions. [2022-12-13 15:18:52,162 INFO L78 Accepts]: Start accepts. Automaton has 1490 states and 1990 transitions. Word has length 66 [2022-12-13 15:18:52,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:52,163 INFO L495 AbstractCegarLoop]: Abstraction has 1490 states and 1990 transitions. [2022-12-13 15:18:52,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 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) [2022-12-13 15:18:52,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1490 states and 1990 transitions. [2022-12-13 15:18:52,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:18:52,164 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:52,164 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:18:52,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-13 15:18:52,165 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:52,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:52,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1744333926, now seen corresponding path program 1 times [2022-12-13 15:18:52,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:52,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256773167] [2022-12-13 15:18:52,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:52,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:52,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:52,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:52,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:52,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:18:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:18:52,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:18:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:52,303 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 15:18:52,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:52,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256773167] [2022-12-13 15:18:52,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256773167] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:52,304 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:52,304 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:18:52,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750357283] [2022-12-13 15:18:52,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:52,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:18:52,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:52,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:18:52,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:18:52,305 INFO L87 Difference]: Start difference. First operand 1490 states and 1990 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-12-13 15:18:52,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:52,949 INFO L93 Difference]: Finished difference Result 2932 states and 3927 transitions. [2022-12-13 15:18:52,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:18:52,949 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-12-13 15:18:52,950 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:52,956 INFO L225 Difference]: With dead ends: 2932 [2022-12-13 15:18:52,956 INFO L226 Difference]: Without dead ends: 1636 [2022-12-13 15:18:52,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:18:52,966 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 345 mSDsluCounter, 1478 mSDsCounter, 0 mSdLazyCounter, 1198 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 347 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 1278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 1198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:52,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [347 Valid, 1739 Invalid, 1278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 1198 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 15:18:52,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1636 states. [2022-12-13 15:18:53,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1636 to 1530. [2022-12-13 15:18:53,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1530 states, 1210 states have (on average 1.3413223140495867) internal successors, (1623), 1235 states have internal predecessors, (1623), 172 states have call successors, (172), 110 states have call predecessors, (172), 146 states have return successors, (229), 187 states have call predecessors, (229), 168 states have call successors, (229) [2022-12-13 15:18:53,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 2024 transitions. [2022-12-13 15:18:53,030 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 2024 transitions. Word has length 91 [2022-12-13 15:18:53,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:53,030 INFO L495 AbstractCegarLoop]: Abstraction has 1530 states and 2024 transitions. [2022-12-13 15:18:53,030 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-12-13 15:18:53,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 2024 transitions. [2022-12-13 15:18:53,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:18:53,032 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:53,032 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:18:53,032 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-13 15:18:53,032 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:53,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:53,032 INFO L85 PathProgramCache]: Analyzing trace with hash -2106732696, now seen corresponding path program 1 times [2022-12-13 15:18:53,032 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:53,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431794434] [2022-12-13 15:18:53,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:53,033 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:53,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:53,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:53,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:53,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:53,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:18:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:18:53,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:18:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:53,143 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 15:18:53,143 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:53,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1431794434] [2022-12-13 15:18:53,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1431794434] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:53,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:53,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 15:18:53,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332306429] [2022-12-13 15:18:53,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:53,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:18:53,144 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:53,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:18:53,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:18:53,145 INFO L87 Difference]: Start difference. First operand 1530 states and 2024 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-12-13 15:18:53,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:53,854 INFO L93 Difference]: Finished difference Result 3322 states and 4390 transitions. [2022-12-13 15:18:53,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:18:53,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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 91 [2022-12-13 15:18:53,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:53,868 INFO L225 Difference]: With dead ends: 3322 [2022-12-13 15:18:53,868 INFO L226 Difference]: Without dead ends: 2060 [2022-12-13 15:18:53,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=216, Unknown=0, NotChecked=0, Total=306 [2022-12-13 15:18:53,873 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 596 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 1016 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 604 SdHoareTripleChecker+Valid, 1431 SdHoareTripleChecker+Invalid, 1147 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 1016 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:53,873 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [604 Valid, 1431 Invalid, 1147 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 1016 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 15:18:53,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2060 states. [2022-12-13 15:18:53,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2060 to 1884. [2022-12-13 15:18:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1884 states, 1492 states have (on average 1.3136729222520107) internal successors, (1960), 1518 states have internal predecessors, (1960), 212 states have call successors, (212), 140 states have call predecessors, (212), 178 states have return successors, (270), 228 states have call predecessors, (270), 208 states have call successors, (270) [2022-12-13 15:18:54,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1884 states to 1884 states and 2442 transitions. [2022-12-13 15:18:54,008 INFO L78 Accepts]: Start accepts. Automaton has 1884 states and 2442 transitions. Word has length 91 [2022-12-13 15:18:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:54,008 INFO L495 AbstractCegarLoop]: Abstraction has 1884 states and 2442 transitions. [2022-12-13 15:18:54,008 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-12-13 15:18:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 1884 states and 2442 transitions. [2022-12-13 15:18:54,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:18:54,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:54,010 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:18:54,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-12-13 15:18:54,011 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:54,011 INFO L85 PathProgramCache]: Analyzing trace with hash -2122251414, now seen corresponding path program 1 times [2022-12-13 15:18:54,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:54,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021094772] [2022-12-13 15:18:54,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:54,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:54,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:54,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:54,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:54,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:54,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:18:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:18:54,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:18:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:54,182 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 15:18:54,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:54,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021094772] [2022-12-13 15:18:54,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021094772] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:54,182 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:54,182 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-13 15:18:54,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115196973] [2022-12-13 15:18:54,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:54,183 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 15:18:54,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:54,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 15:18:54,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:18:54,184 INFO L87 Difference]: Start difference. First operand 1884 states and 2442 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-12-13 15:18:54,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:54,865 INFO L93 Difference]: Finished difference Result 3411 states and 4406 transitions. [2022-12-13 15:18:54,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 15:18:54,865 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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 91 [2022-12-13 15:18:54,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:54,877 INFO L225 Difference]: With dead ends: 3411 [2022-12-13 15:18:54,877 INFO L226 Difference]: Without dead ends: 1958 [2022-12-13 15:18:54,881 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-12-13 15:18:54,882 INFO L413 NwaCegarLoop]: 267 mSDtfsCounter, 1051 mSDsluCounter, 903 mSDsCounter, 0 mSdLazyCounter, 1072 mSolverCounterSat, 194 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1077 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 194 IncrementalHoareTripleChecker+Valid, 1072 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:54,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1077 Valid, 1170 Invalid, 1266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [194 Valid, 1072 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 15:18:54,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1958 states. [2022-12-13 15:18:55,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1958 to 1663. [2022-12-13 15:18:55,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1324 states have (on average 1.3157099697885197) internal successors, (1742), 1345 states have internal predecessors, (1742), 184 states have call successors, (184), 121 states have call predecessors, (184), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-12-13 15:18:55,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2156 transitions. [2022-12-13 15:18:55,014 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2156 transitions. Word has length 91 [2022-12-13 15:18:55,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:55,014 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2156 transitions. [2022-12-13 15:18:55,014 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 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) [2022-12-13 15:18:55,014 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2156 transitions. [2022-12-13 15:18:55,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:18:55,016 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:55,016 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:18:55,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-13 15:18:55,016 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:55,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:55,017 INFO L85 PathProgramCache]: Analyzing trace with hash -183089368, now seen corresponding path program 1 times [2022-12-13 15:18:55,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:55,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912041149] [2022-12-13 15:18:55,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:55,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:55,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:55,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:55,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:55,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:55,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:18:55,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:18:55,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:18:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:55,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-12-13 15:18:55,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:55,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912041149] [2022-12-13 15:18:55,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912041149] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:55,116 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:55,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:18:55,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767062808] [2022-12-13 15:18:55,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:55,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:18:55,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:55,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:18:55,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:18:55,117 INFO L87 Difference]: Start difference. First operand 1663 states and 2156 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 15:18:55,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:55,788 INFO L93 Difference]: Finished difference Result 4815 states and 6268 transitions. [2022-12-13 15:18:55,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-13 15:18:55,788 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-12-13 15:18:55,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:55,800 INFO L225 Difference]: With dead ends: 4815 [2022-12-13 15:18:55,801 INFO L226 Difference]: Without dead ends: 3346 [2022-12-13 15:18:55,804 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-12-13 15:18:55,805 INFO L413 NwaCegarLoop]: 257 mSDtfsCounter, 969 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 171 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 171 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:55,805 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 918 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [171 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-13 15:18:55,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3346 states. [2022-12-13 15:18:56,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3346 to 3132. [2022-12-13 15:18:56,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3132 states, 2473 states have (on average 1.281843914274161) internal successors, (3170), 2523 states have internal predecessors, (3170), 345 states have call successors, (345), 234 states have call predecessors, (345), 312 states have return successors, (513), 377 states have call predecessors, (513), 341 states have call successors, (513) [2022-12-13 15:18:56,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3132 states to 3132 states and 4028 transitions. [2022-12-13 15:18:56,019 INFO L78 Accepts]: Start accepts. Automaton has 3132 states and 4028 transitions. Word has length 91 [2022-12-13 15:18:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:56,019 INFO L495 AbstractCegarLoop]: Abstraction has 3132 states and 4028 transitions. [2022-12-13 15:18:56,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-12-13 15:18:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 3132 states and 4028 transitions. [2022-12-13 15:18:56,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:18:56,021 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:56,021 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:18:56,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-13 15:18:56,021 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:56,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:56,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1240927446, now seen corresponding path program 1 times [2022-12-13 15:18:56,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:56,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247853011] [2022-12-13 15:18:56,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:56,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:56,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:56,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:56,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:56,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:56,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:18:56,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:18:56,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-12-13 15:18:56,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,072 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-13 15:18:56,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:56,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247853011] [2022-12-13 15:18:56,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247853011] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:56,072 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:56,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:18:56,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [766944622] [2022-12-13 15:18:56,072 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:56,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:18:56,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:56,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:18:56,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:18:56,073 INFO L87 Difference]: Start difference. First operand 3132 states and 4028 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 15:18:56,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:56,472 INFO L93 Difference]: Finished difference Result 4716 states and 6012 transitions. [2022-12-13 15:18:56,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 15:18:56,472 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-12-13 15:18:56,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:56,476 INFO L225 Difference]: With dead ends: 4716 [2022-12-13 15:18:56,476 INFO L226 Difference]: Without dead ends: 1778 [2022-12-13 15:18:56,480 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:18:56,480 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 623 mSDsluCounter, 523 mSDsCounter, 0 mSdLazyCounter, 407 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 778 SdHoareTripleChecker+Invalid, 533 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:56,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 778 Invalid, 533 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 407 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-12-13 15:18:56,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1778 states. [2022-12-13 15:18:56,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1778 to 1663. [2022-12-13 15:18:56,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1324 states have (on average 1.2877643504531722) internal successors, (1705), 1345 states have internal predecessors, (1705), 184 states have call successors, (184), 121 states have call predecessors, (184), 153 states have return successors, (230), 198 states have call predecessors, (230), 180 states have call successors, (230) [2022-12-13 15:18:56,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2119 transitions. [2022-12-13 15:18:56,559 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2119 transitions. Word has length 91 [2022-12-13 15:18:56,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:56,559 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2119 transitions. [2022-12-13 15:18:56,560 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), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-12-13 15:18:56,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2119 transitions. [2022-12-13 15:18:56,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-12-13 15:18:56,560 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:56,561 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-12-13 15:18:56,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-12-13 15:18:56,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:56,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:56,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2108882217, now seen corresponding path program 1 times [2022-12-13 15:18:56,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:56,561 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188489090] [2022-12-13 15:18:56,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:56,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:56,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:18:56,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:18:56,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:18:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:18:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:18:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:18:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 15:18:56,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:56,656 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-12-13 15:18:56,656 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:56,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188489090] [2022-12-13 15:18:56,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [188489090] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:56,657 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:56,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-12-13 15:18:56,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708405048] [2022-12-13 15:18:56,657 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:56,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 15:18:56,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:56,658 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 15:18:56,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:18:56,658 INFO L87 Difference]: Start difference. First operand 1663 states and 2119 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) [2022-12-13 15:18:57,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:57,728 INFO L93 Difference]: Finished difference Result 4081 states and 5202 transitions. [2022-12-13 15:18:57,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-12-13 15:18:57,729 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 92 [2022-12-13 15:18:57,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:57,734 INFO L225 Difference]: With dead ends: 4081 [2022-12-13 15:18:57,735 INFO L226 Difference]: Without dead ends: 2461 [2022-12-13 15:18:57,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-12-13 15:18:57,737 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 1755 mSDsluCounter, 929 mSDsCounter, 0 mSdLazyCounter, 1249 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 1210 SdHoareTripleChecker+Invalid, 1686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 1249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:57,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 1210 Invalid, 1686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 1249 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 15:18:57,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2461 states. [2022-12-13 15:18:57,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2461 to 2284. [2022-12-13 15:18:57,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 1791 states have (on average 1.254606365159129) internal successors, (2247), 1820 states have internal predecessors, (2247), 261 states have call successors, (261), 169 states have call predecessors, (261), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-12-13 15:18:57,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 2869 transitions. [2022-12-13 15:18:57,851 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 2869 transitions. Word has length 92 [2022-12-13 15:18:57,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:57,851 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 2869 transitions. [2022-12-13 15:18:57,851 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) [2022-12-13 15:18:57,851 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 2869 transitions. [2022-12-13 15:18:57,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:18:57,852 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:57,852 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] [2022-12-13 15:18:57,852 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-12-13 15:18:57,853 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:57,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:57,853 INFO L85 PathProgramCache]: Analyzing trace with hash -6968229, now seen corresponding path program 1 times [2022-12-13 15:18:57,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:57,853 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270641355] [2022-12-13 15:18:57,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:57,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:57,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:57,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:57,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:18:57,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:57,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:18:57,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:57,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:18:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:57,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:18:57,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:57,910 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:57,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:57,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270641355] [2022-12-13 15:18:57,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270641355] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:57,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:57,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 15:18:57,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100691283] [2022-12-13 15:18:57,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:57,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 15:18:57,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:57,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 15:18:57,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 15:18:57,912 INFO L87 Difference]: Start difference. First operand 2284 states and 2869 transitions. Second operand has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-12-13 15:18:58,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:18:58,670 INFO L93 Difference]: Finished difference Result 2512 states and 3225 transitions. [2022-12-13 15:18:58,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 15:18:58,670 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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 91 [2022-12-13 15:18:58,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:18:58,675 INFO L225 Difference]: With dead ends: 2512 [2022-12-13 15:18:58,675 INFO L226 Difference]: Without dead ends: 2338 [2022-12-13 15:18:58,676 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-12-13 15:18:58,676 INFO L413 NwaCegarLoop]: 264 mSDtfsCounter, 554 mSDsluCounter, 393 mSDsCounter, 0 mSdLazyCounter, 575 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 570 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 575 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 15:18:58,676 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [570 Valid, 657 Invalid, 655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 575 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-12-13 15:18:58,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-12-13 15:18:58,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2284. [2022-12-13 15:18:58,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2284 states, 1791 states have (on average 1.2540480178671134) internal successors, (2246), 1820 states have internal predecessors, (2246), 261 states have call successors, (261), 169 states have call predecessors, (261), 230 states have return successors, (361), 296 states have call predecessors, (361), 257 states have call successors, (361) [2022-12-13 15:18:58,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2284 states to 2284 states and 2868 transitions. [2022-12-13 15:18:58,849 INFO L78 Accepts]: Start accepts. Automaton has 2284 states and 2868 transitions. Word has length 91 [2022-12-13 15:18:58,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:18:58,849 INFO L495 AbstractCegarLoop]: Abstraction has 2284 states and 2868 transitions. [2022-12-13 15:18:58,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.0) internal successors, (80), 3 states have internal predecessors, (80), 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) [2022-12-13 15:18:58,850 INFO L276 IsEmpty]: Start isEmpty. Operand 2284 states and 2868 transitions. [2022-12-13 15:18:58,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:18:58,851 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:18:58,851 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] [2022-12-13 15:18:58,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-12-13 15:18:58,851 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:18:58,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:18:58,851 INFO L85 PathProgramCache]: Analyzing trace with hash -247207975, now seen corresponding path program 1 times [2022-12-13 15:18:58,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:18:58,851 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397985054] [2022-12-13 15:18:58,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:18:58,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:18:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:18:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:58,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:18:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:58,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:18:58,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:58,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:18:58,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:58,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:18:58,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:18:58,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:18:58,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:18:58,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397985054] [2022-12-13 15:18:58,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397985054] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:18:58,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:18:58,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-13 15:18:58,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611635737] [2022-12-13 15:18:58,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:18:58,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-13 15:18:58,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:18:58,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-13 15:18:58,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-13 15:18:58,933 INFO L87 Difference]: Start difference. First operand 2284 states and 2868 transitions. Second operand has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-12-13 15:19:00,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:00,054 INFO L93 Difference]: Finished difference Result 2738 states and 3579 transitions. [2022-12-13 15:19:00,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-13 15:19:00,054 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:00,055 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:00,061 INFO L225 Difference]: With dead ends: 2738 [2022-12-13 15:19:00,062 INFO L226 Difference]: Without dead ends: 2566 [2022-12-13 15:19:00,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:19:00,063 INFO L413 NwaCegarLoop]: 276 mSDtfsCounter, 895 mSDsluCounter, 697 mSDsCounter, 0 mSdLazyCounter, 1186 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 973 SdHoareTripleChecker+Invalid, 1310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 1186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:00,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 973 Invalid, 1310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 1186 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 15:19:00,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2566 states. [2022-12-13 15:19:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2566 to 2457. [2022-12-13 15:19:00,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2457 states, 1944 states have (on average 1.2777777777777777) internal successors, (2484), 1974 states have internal predecessors, (2484), 274 states have call successors, (274), 175 states have call predecessors, (274), 237 states have return successors, (377), 309 states have call predecessors, (377), 270 states have call successors, (377) [2022-12-13 15:19:00,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2457 states to 2457 states and 3135 transitions. [2022-12-13 15:19:00,230 INFO L78 Accepts]: Start accepts. Automaton has 2457 states and 3135 transitions. Word has length 91 [2022-12-13 15:19:00,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:00,230 INFO L495 AbstractCegarLoop]: Abstraction has 2457 states and 3135 transitions. [2022-12-13 15:19:00,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 13.333333333333334) internal successors, (80), 4 states have internal predecessors, (80), 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) [2022-12-13 15:19:00,231 INFO L276 IsEmpty]: Start isEmpty. Operand 2457 states and 3135 transitions. [2022-12-13 15:19:00,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:00,231 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:00,231 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] [2022-12-13 15:19:00,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-12-13 15:19:00,232 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:00,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:00,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1993054677, now seen corresponding path program 1 times [2022-12-13 15:19:00,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:00,232 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1639680823] [2022-12-13 15:19:00,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:00,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:00,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:00,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:00,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:00,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:00,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:00,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:00,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:00,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:00,330 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:00,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1639680823] [2022-12-13 15:19:00,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1639680823] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:00,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:00,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:00,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265690322] [2022-12-13 15:19:00,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:00,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:00,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:00,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:00,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:00,331 INFO L87 Difference]: Start difference. First operand 2457 states and 3135 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:01,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:01,849 INFO L93 Difference]: Finished difference Result 3141 states and 4201 transitions. [2022-12-13 15:19:01,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:19:01,849 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:01,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:01,854 INFO L225 Difference]: With dead ends: 3141 [2022-12-13 15:19:01,854 INFO L226 Difference]: Without dead ends: 2796 [2022-12-13 15:19:01,855 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:19:01,856 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 894 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1766 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 917 SdHoareTripleChecker+Valid, 1530 SdHoareTripleChecker+Invalid, 1857 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:01,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [917 Valid, 1530 Invalid, 1857 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1766 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:19:01,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2796 states. [2022-12-13 15:19:02,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2796 to 2619. [2022-12-13 15:19:02,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2619 states, 2086 states have (on average 1.2943432406519655) internal successors, (2700), 2117 states have internal predecessors, (2700), 287 states have call successors, (287), 181 states have call predecessors, (287), 244 states have return successors, (392), 323 states have call predecessors, (392), 283 states have call successors, (392) [2022-12-13 15:19:02,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2619 states to 2619 states and 3379 transitions. [2022-12-13 15:19:02,162 INFO L78 Accepts]: Start accepts. Automaton has 2619 states and 3379 transitions. Word has length 91 [2022-12-13 15:19:02,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:02,162 INFO L495 AbstractCegarLoop]: Abstraction has 2619 states and 3379 transitions. [2022-12-13 15:19:02,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:02,163 INFO L276 IsEmpty]: Start isEmpty. Operand 2619 states and 3379 transitions. [2022-12-13 15:19:02,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:02,165 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:02,165 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] [2022-12-13 15:19:02,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-13 15:19:02,165 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:02,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:02,166 INFO L85 PathProgramCache]: Analyzing trace with hash -567808169, now seen corresponding path program 1 times [2022-12-13 15:19:02,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:02,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970268508] [2022-12-13 15:19:02,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:02,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:02,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:02,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:02,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:02,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:02,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:02,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:02,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:02,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:02,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:02,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970268508] [2022-12-13 15:19:02,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970268508] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:02,279 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:02,279 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:02,280 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733015674] [2022-12-13 15:19:02,280 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:02,280 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:02,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:02,281 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:02,281 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:02,281 INFO L87 Difference]: Start difference. First operand 2619 states and 3379 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:03,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:03,845 INFO L93 Difference]: Finished difference Result 3734 states and 5113 transitions. [2022-12-13 15:19:03,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:19:03,845 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:03,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:03,856 INFO L225 Difference]: With dead ends: 3734 [2022-12-13 15:19:03,856 INFO L226 Difference]: Without dead ends: 3227 [2022-12-13 15:19:03,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:19:03,858 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 892 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1762 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1855 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:03,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1528 Invalid, 1855 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1762 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:19:03,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3227 states. [2022-12-13 15:19:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3227 to 2944. [2022-12-13 15:19:04,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2944 states, 2371 states have (on average 1.321383382539013) internal successors, (3133), 2404 states have internal predecessors, (3133), 313 states have call successors, (313), 193 states have call predecessors, (313), 258 states have return successors, (426), 351 states have call predecessors, (426), 309 states have call successors, (426) [2022-12-13 15:19:04,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2944 states to 2944 states and 3872 transitions. [2022-12-13 15:19:04,059 INFO L78 Accepts]: Start accepts. Automaton has 2944 states and 3872 transitions. Word has length 91 [2022-12-13 15:19:04,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:04,059 INFO L495 AbstractCegarLoop]: Abstraction has 2944 states and 3872 transitions. [2022-12-13 15:19:04,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:04,059 INFO L276 IsEmpty]: Start isEmpty. Operand 2944 states and 3872 transitions. [2022-12-13 15:19:04,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:04,060 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:04,060 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] [2022-12-13 15:19:04,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-13 15:19:04,060 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:04,060 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:04,060 INFO L85 PathProgramCache]: Analyzing trace with hash 319414677, now seen corresponding path program 1 times [2022-12-13 15:19:04,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:04,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [178674386] [2022-12-13 15:19:04,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:04,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:04,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:04,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:04,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:04,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:04,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:04,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:04,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:04,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:04,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:04,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:04,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:04,151 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:04,151 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:04,151 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [178674386] [2022-12-13 15:19:04,151 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [178674386] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:04,151 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:04,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:04,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541313800] [2022-12-13 15:19:04,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:04,151 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:04,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:04,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:04,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:04,152 INFO L87 Difference]: Start difference. First operand 2944 states and 3872 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:05,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:05,653 INFO L93 Difference]: Finished difference Result 4879 states and 6870 transitions. [2022-12-13 15:19:05,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:19:05,654 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:05,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:05,661 INFO L225 Difference]: With dead ends: 4879 [2022-12-13 15:19:05,661 INFO L226 Difference]: Without dead ends: 4047 [2022-12-13 15:19:05,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:19:05,664 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 888 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1753 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 911 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1753 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:05,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [911 Valid, 1528 Invalid, 1846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1753 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:19:05,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4047 states. [2022-12-13 15:19:05,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4047 to 3595. [2022-12-13 15:19:05,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3595 states, 2942 states have (on average 1.3592794017675052) internal successors, (3999), 2979 states have internal predecessors, (3999), 365 states have call successors, (365), 217 states have call predecessors, (365), 286 states have return successors, (500), 407 states have call predecessors, (500), 361 states have call successors, (500) [2022-12-13 15:19:05,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3595 states to 3595 states and 4864 transitions. [2022-12-13 15:19:05,960 INFO L78 Accepts]: Start accepts. Automaton has 3595 states and 4864 transitions. Word has length 91 [2022-12-13 15:19:05,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:05,961 INFO L495 AbstractCegarLoop]: Abstraction has 3595 states and 4864 transitions. [2022-12-13 15:19:05,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:05,961 INFO L276 IsEmpty]: Start isEmpty. Operand 3595 states and 4864 transitions. [2022-12-13 15:19:05,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:05,962 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:05,962 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] [2022-12-13 15:19:05,962 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-13 15:19:05,962 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:05,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:05,963 INFO L85 PathProgramCache]: Analyzing trace with hash -1591627881, now seen corresponding path program 1 times [2022-12-13 15:19:05,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:05,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1971201603] [2022-12-13 15:19:05,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:05,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:05,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:05,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:06,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:06,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:06,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:06,040 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:06,041 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:06,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1971201603] [2022-12-13 15:19:06,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1971201603] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:06,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:06,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:06,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597808984] [2022-12-13 15:19:06,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:06,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:06,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:06,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:06,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:06,042 INFO L87 Difference]: Start difference. First operand 3595 states and 4864 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:07,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:07,512 INFO L93 Difference]: Finished difference Result 7168 states and 10400 transitions. [2022-12-13 15:19:07,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-12-13 15:19:07,512 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:07,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:07,526 INFO L225 Difference]: With dead ends: 7168 [2022-12-13 15:19:07,526 INFO L226 Difference]: Without dead ends: 5685 [2022-12-13 15:19:07,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-12-13 15:19:07,529 INFO L413 NwaCegarLoop]: 357 mSDtfsCounter, 890 mSDsluCounter, 1171 mSDsCounter, 0 mSdLazyCounter, 1739 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 913 SdHoareTripleChecker+Valid, 1528 SdHoareTripleChecker+Invalid, 1832 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 1739 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:07,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [913 Valid, 1528 Invalid, 1832 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 1739 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-13 15:19:07,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5685 states. [2022-12-13 15:19:07,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5685 to 4902. [2022-12-13 15:19:07,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4902 states, 4089 states have (on average 1.4030325262900465) internal successors, (5737), 4134 states have internal predecessors, (5737), 469 states have call successors, (469), 265 states have call predecessors, (469), 342 states have return successors, (666), 519 states have call predecessors, (666), 465 states have call successors, (666) [2022-12-13 15:19:07,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4902 states to 4902 states and 6872 transitions. [2022-12-13 15:19:07,864 INFO L78 Accepts]: Start accepts. Automaton has 4902 states and 6872 transitions. Word has length 91 [2022-12-13 15:19:07,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:07,865 INFO L495 AbstractCegarLoop]: Abstraction has 4902 states and 6872 transitions. [2022-12-13 15:19:07,865 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:07,865 INFO L276 IsEmpty]: Start isEmpty. Operand 4902 states and 6872 transitions. [2022-12-13 15:19:07,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:07,866 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:07,867 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] [2022-12-13 15:19:07,867 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-12-13 15:19:07,867 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:07,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:07,867 INFO L85 PathProgramCache]: Analyzing trace with hash -1514727083, now seen corresponding path program 1 times [2022-12-13 15:19:07,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:07,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130628512] [2022-12-13 15:19:07,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:07,867 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:07,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:07,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:07,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:07,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:07,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:07,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130628512] [2022-12-13 15:19:07,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130628512] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:07,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:07,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:07,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633385797] [2022-12-13 15:19:07,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:07,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:07,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:07,958 INFO L87 Difference]: Start difference. First operand 4902 states and 6872 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:10,172 INFO L93 Difference]: Finished difference Result 12578 states and 18756 transitions. [2022-12-13 15:19:10,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:19:10,172 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:10,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:10,189 INFO L225 Difference]: With dead ends: 12578 [2022-12-13 15:19:10,190 INFO L226 Difference]: Without dead ends: 9788 [2022-12-13 15:19:10,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:19:10,195 INFO L413 NwaCegarLoop]: 354 mSDtfsCounter, 1020 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1048 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 1801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:10,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1048 Valid, 1514 Invalid, 1801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:19:10,202 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9788 states. [2022-12-13 15:19:10,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9788 to 7338. [2022-12-13 15:19:10,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7338 states, 6221 states have (on average 1.4378717248030863) internal successors, (8945), 6282 states have internal predecessors, (8945), 661 states have call successors, (661), 361 states have call predecessors, (661), 454 states have return successors, (1036), 727 states have call predecessors, (1036), 657 states have call successors, (1036) [2022-12-13 15:19:10,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7338 states to 7338 states and 10642 transitions. [2022-12-13 15:19:10,926 INFO L78 Accepts]: Start accepts. Automaton has 7338 states and 10642 transitions. Word has length 91 [2022-12-13 15:19:10,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:10,926 INFO L495 AbstractCegarLoop]: Abstraction has 7338 states and 10642 transitions. [2022-12-13 15:19:10,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:10,926 INFO L276 IsEmpty]: Start isEmpty. Operand 7338 states and 10642 transitions. [2022-12-13 15:19:10,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:10,929 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:10,929 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] [2022-12-13 15:19:10,929 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-12-13 15:19:10,929 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:10,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:10,929 INFO L85 PathProgramCache]: Analyzing trace with hash 393730707, now seen corresponding path program 1 times [2022-12-13 15:19:10,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:10,929 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549118567] [2022-12-13 15:19:10,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:10,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:10,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:10,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:10,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:10,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:10,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:10,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:11,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:11,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:11,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:11,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:11,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549118567] [2022-12-13 15:19:11,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549118567] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:11,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:11,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:11,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061275124] [2022-12-13 15:19:11,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:11,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:11,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:11,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:11,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:11,011 INFO L87 Difference]: Start difference. First operand 7338 states and 10642 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:13,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:13,651 INFO L93 Difference]: Finished difference Result 21544 states and 32728 transitions. [2022-12-13 15:19:13,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:19:13,652 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:13,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:13,697 INFO L225 Difference]: With dead ends: 21544 [2022-12-13 15:19:13,697 INFO L226 Difference]: Without dead ends: 16318 [2022-12-13 15:19:13,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:19:13,716 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 908 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1889 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 1889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:13,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 1518 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [95 Valid, 1889 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:19:13,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16318 states. [2022-12-13 15:19:14,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16318 to 12351. [2022-12-13 15:19:14,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12351 states, 10642 states have (on average 1.471433940988536) internal successors, (15659), 10735 states have internal predecessors, (15659), 1029 states have call successors, (1029), 553 states have call predecessors, (1029), 678 states have return successors, (1922), 1127 states have call predecessors, (1922), 1025 states have call successors, (1922) [2022-12-13 15:19:14,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12351 states to 12351 states and 18610 transitions. [2022-12-13 15:19:14,827 INFO L78 Accepts]: Start accepts. Automaton has 12351 states and 18610 transitions. Word has length 91 [2022-12-13 15:19:14,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:14,827 INFO L495 AbstractCegarLoop]: Abstraction has 12351 states and 18610 transitions. [2022-12-13 15:19:14,828 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:14,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12351 states and 18610 transitions. [2022-12-13 15:19:14,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:14,834 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:14,834 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:19:14,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-12-13 15:19:14,835 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:14,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:14,835 INFO L85 PathProgramCache]: Analyzing trace with hash -98895467, now seen corresponding path program 1 times [2022-12-13 15:19:14,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:14,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773427569] [2022-12-13 15:19:14,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:14,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:14,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:14,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:14,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:14,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:14,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:14,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:14,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:14,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:14,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:14,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:14,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:14,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:14,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773427569] [2022-12-13 15:19:14,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773427569] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:14,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:14,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:14,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505097230] [2022-12-13 15:19:14,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:14,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:14,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:14,931 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:14,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:14,931 INFO L87 Difference]: Start difference. First operand 12351 states and 18610 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:18,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:18,822 INFO L93 Difference]: Finished difference Result 39331 states and 61206 transitions. [2022-12-13 15:19:18,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:19:18,822 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:18,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:18,896 INFO L225 Difference]: With dead ends: 39331 [2022-12-13 15:19:18,896 INFO L226 Difference]: Without dead ends: 29092 [2022-12-13 15:19:18,919 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:19:18,920 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 941 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 969 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:18,920 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [969 Valid, 1518 Invalid, 1776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-12-13 15:19:18,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29092 states. [2022-12-13 15:19:20,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29092 to 22344. [2022-12-13 15:19:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22344 states, 19483 states have (on average 1.494482369244983) internal successors, (29117), 19640 states have internal predecessors, (29117), 1733 states have call successors, (1733), 937 states have call predecessors, (1733), 1126 states have return successors, (4148), 1895 states have call predecessors, (4148), 1729 states have call successors, (4148) [2022-12-13 15:19:20,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22344 states to 22344 states and 34998 transitions. [2022-12-13 15:19:20,837 INFO L78 Accepts]: Start accepts. Automaton has 22344 states and 34998 transitions. Word has length 91 [2022-12-13 15:19:20,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:20,838 INFO L495 AbstractCegarLoop]: Abstraction has 22344 states and 34998 transitions. [2022-12-13 15:19:20,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:20,838 INFO L276 IsEmpty]: Start isEmpty. Operand 22344 states and 34998 transitions. [2022-12-13 15:19:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:20,848 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:20,848 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] [2022-12-13 15:19:20,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-12-13 15:19:20,849 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:20,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:20,849 INFO L85 PathProgramCache]: Analyzing trace with hash 855044691, now seen corresponding path program 1 times [2022-12-13 15:19:20,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:20,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [165657741] [2022-12-13 15:19:20,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:20,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:20,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:20,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:20,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:20,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:20,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:20,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:20,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:20,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:20,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:20,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:20,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:20,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [165657741] [2022-12-13 15:19:20,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [165657741] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:20,947 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:20,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:20,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414726957] [2022-12-13 15:19:20,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:20,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:20,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:20,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:20,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:20,948 INFO L87 Difference]: Start difference. First operand 22344 states and 34998 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:27,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:27,609 INFO L93 Difference]: Finished difference Result 73722 states and 118220 transitions. [2022-12-13 15:19:27,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-13 15:19:27,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:27,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:27,787 INFO L225 Difference]: With dead ends: 73722 [2022-12-13 15:19:27,787 INFO L226 Difference]: Without dead ends: 53490 [2022-12-13 15:19:27,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-12-13 15:19:27,834 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 898 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 926 SdHoareTripleChecker+Valid, 1518 SdHoareTripleChecker+Invalid, 1762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:27,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [926 Valid, 1518 Invalid, 1762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-13 15:19:27,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53490 states. [2022-12-13 15:19:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53490 to 42265. [2022-12-13 15:19:31,259 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42265 states, 37164 states have (on average 1.5093908083091163) internal successors, (56095), 37449 states have internal predecessors, (56095), 3077 states have call successors, (3077), 1705 states have call predecessors, (3077), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-12-13 15:19:31,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42265 states to 42265 states and 69166 transitions. [2022-12-13 15:19:31,356 INFO L78 Accepts]: Start accepts. Automaton has 42265 states and 69166 transitions. Word has length 91 [2022-12-13 15:19:31,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:31,356 INFO L495 AbstractCegarLoop]: Abstraction has 42265 states and 69166 transitions. [2022-12-13 15:19:31,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:31,356 INFO L276 IsEmpty]: Start isEmpty. Operand 42265 states and 69166 transitions. [2022-12-13 15:19:31,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:31,373 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:31,373 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] [2022-12-13 15:19:31,373 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-12-13 15:19:31,373 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:31,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:31,374 INFO L85 PathProgramCache]: Analyzing trace with hash -361109035, now seen corresponding path program 1 times [2022-12-13 15:19:31,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:31,374 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421159129] [2022-12-13 15:19:31,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:31,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:31,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:31,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:31,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:31,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:31,465 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:31,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:31,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421159129] [2022-12-13 15:19:31,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421159129] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:31,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:31,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:31,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081169689] [2022-12-13 15:19:31,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:31,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:31,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:31,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:31,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:31,467 INFO L87 Difference]: Start difference. First operand 42265 states and 69166 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:41,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:19:41,628 INFO L93 Difference]: Finished difference Result 111749 states and 179235 transitions. [2022-12-13 15:19:41,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 15:19:41,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:19:41,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:19:41,810 INFO L225 Difference]: With dead ends: 111749 [2022-12-13 15:19:41,811 INFO L226 Difference]: Without dead ends: 71597 [2022-12-13 15:19:41,941 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2022-12-13 15:19:41,942 INFO L413 NwaCegarLoop]: 263 mSDtfsCounter, 571 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 1316 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 571 SdHoareTripleChecker+Valid, 1255 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 15:19:41,942 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [571 Valid, 1255 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1316 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 15:19:41,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71597 states. [2022-12-13 15:19:45,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71597 to 43036. [2022-12-13 15:19:45,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43036 states, 37935 states have (on average 1.4990378278634506) internal successors, (56866), 38220 states have internal predecessors, (56866), 3077 states have call successors, (3077), 1705 states have call predecessors, (3077), 2022 states have return successors, (9994), 3367 states have call predecessors, (9994), 3073 states have call successors, (9994) [2022-12-13 15:19:45,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43036 states to 43036 states and 69937 transitions. [2022-12-13 15:19:45,805 INFO L78 Accepts]: Start accepts. Automaton has 43036 states and 69937 transitions. Word has length 91 [2022-12-13 15:19:45,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:19:45,806 INFO L495 AbstractCegarLoop]: Abstraction has 43036 states and 69937 transitions. [2022-12-13 15:19:45,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:19:45,806 INFO L276 IsEmpty]: Start isEmpty. Operand 43036 states and 69937 transitions. [2022-12-13 15:19:45,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-12-13 15:19:45,821 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:19:45,822 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] [2022-12-13 15:19:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-12-13 15:19:45,822 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:19:45,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:19:45,822 INFO L85 PathProgramCache]: Analyzing trace with hash 72620051, now seen corresponding path program 1 times [2022-12-13 15:19:45,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:19:45,822 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557979177] [2022-12-13 15:19:45,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:19:45,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:19:45,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:45,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:19:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:45,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:19:45,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:45,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:19:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:45,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:19:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:45,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:19:45,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:19:45,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 15:19:45,926 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:19:45,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557979177] [2022-12-13 15:19:45,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557979177] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:19:45,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 15:19:45,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 15:19:45,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168347274] [2022-12-13 15:19:45,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:19:45,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-13 15:19:45,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:19:45,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-13 15:19:45,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-12-13 15:19:45,927 INFO L87 Difference]: Start difference. First operand 43036 states and 69937 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:20:02,967 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:02,967 INFO L93 Difference]: Finished difference Result 183726 states and 302063 transitions. [2022-12-13 15:20:02,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-12-13 15:20:02,967 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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 91 [2022-12-13 15:20:02,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:03,481 INFO L225 Difference]: With dead ends: 183726 [2022-12-13 15:20:03,481 INFO L226 Difference]: Without dead ends: 142803 [2022-12-13 15:20:03,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2022-12-13 15:20:03,627 INFO L413 NwaCegarLoop]: 437 mSDtfsCounter, 2060 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 1812 mSolverCounterSat, 352 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1281 SdHoareTripleChecker+Invalid, 2164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 352 IncrementalHoareTripleChecker+Valid, 1812 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:03,628 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1281 Invalid, 2164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [352 Valid, 1812 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-13 15:20:03,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142803 states. [2022-12-13 15:20:15,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142803 to 118634. [2022-12-13 15:20:15,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118634 states, 104323 states have (on average 1.4932373493860414) internal successors, (155779), 105507 states have internal predecessors, (155779), 8685 states have call successors, (8685), 4795 states have call predecessors, (8685), 5624 states have return successors, (28611), 8588 states have call predecessors, (28611), 8681 states have call successors, (28611) [2022-12-13 15:20:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118634 states to 118634 states and 193075 transitions. [2022-12-13 15:20:15,747 INFO L78 Accepts]: Start accepts. Automaton has 118634 states and 193075 transitions. Word has length 91 [2022-12-13 15:20:15,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:20:15,747 INFO L495 AbstractCegarLoop]: Abstraction has 118634 states and 193075 transitions. [2022-12-13 15:20:15,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 5 states have internal predecessors, (80), 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) [2022-12-13 15:20:15,747 INFO L276 IsEmpty]: Start isEmpty. Operand 118634 states and 193075 transitions. [2022-12-13 15:20:15,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 15:20:15,909 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:20:15,909 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-13 15:20:15,909 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-12-13 15:20:15,909 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:20:15,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:20:15,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1917455745, now seen corresponding path program 1 times [2022-12-13 15:20:15,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:20:15,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1139644649] [2022-12-13 15:20:15,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:15,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:20:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:20:15,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:20:15,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:20:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:20:15,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:20:15,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 15:20:15,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 15:20:15,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 15:20:15,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:15,996 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 15:20:15,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:20:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1139644649] [2022-12-13 15:20:15,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1139644649] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:20:15,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274835727] [2022-12-13 15:20:15,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:20:15,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:20:15,997 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:20:15,998 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:20:15,999 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-13 15:20:16,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:20:16,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 594 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:20:16,101 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:20:16,160 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-12-13 15:20:16,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:20:16,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274835727] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:20:16,160 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:20:16,160 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 15:20:16,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250543087] [2022-12-13 15:20:16,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:20:16,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:20:16,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:20:16,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:20:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:20:16,162 INFO L87 Difference]: Start difference. First operand 118634 states and 193075 transitions. Second operand has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 15:20:37,744 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:20:37,745 INFO L93 Difference]: Finished difference Result 348967 states and 574980 transitions. [2022-12-13 15:20:37,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:20:37,745 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-12-13 15:20:37,745 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:20:38,510 INFO L225 Difference]: With dead ends: 348967 [2022-12-13 15:20:38,510 INFO L226 Difference]: Without dead ends: 232446 [2022-12-13 15:20:38,737 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:20:38,737 INFO L413 NwaCegarLoop]: 432 mSDtfsCounter, 366 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:20:38,738 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 681 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:20:38,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232446 states. [2022-12-13 15:21:00,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232446 to 230898. [2022-12-13 15:21:01,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230898 states, 203137 states have (on average 1.4933616229441216) internal successors, (303357), 205476 states have internal predecessors, (303357), 16735 states have call successors, (16735), 9427 states have call predecessors, (16735), 11024 states have return successors, (56037), 16251 states have call predecessors, (56037), 16731 states have call successors, (56037) [2022-12-13 15:21:02,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230898 states to 230898 states and 376129 transitions. [2022-12-13 15:21:02,051 INFO L78 Accepts]: Start accepts. Automaton has 230898 states and 376129 transitions. Word has length 147 [2022-12-13 15:21:02,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:21:02,051 INFO L495 AbstractCegarLoop]: Abstraction has 230898 states and 376129 transitions. [2022-12-13 15:21:02,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.666666666666664) internal successors, (110), 2 states have internal predecessors, (110), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 15:21:02,052 INFO L276 IsEmpty]: Start isEmpty. Operand 230898 states and 376129 transitions. [2022-12-13 15:21:02,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 15:21:02,353 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:21:02,353 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-13 15:21:02,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-13 15:21:02,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:21:02,554 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:21:02,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:21:02,554 INFO L85 PathProgramCache]: Analyzing trace with hash 2039658849, now seen corresponding path program 1 times [2022-12-13 15:21:02,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:21:02,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132548521] [2022-12-13 15:21:02,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:02,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:21:02,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:21:02,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:21:02,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:21:02,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:21:02,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:21:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 15:21:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 15:21:02,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 15:21:02,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,673 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 15:21:02,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:21:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132548521] [2022-12-13 15:21:02,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132548521] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:21:02,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [521508317] [2022-12-13 15:21:02,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:21:02,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:21:02,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:21:02,675 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:21:02,678 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-13 15:21:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:21:02,816 INFO L263 TraceCheckSpWp]: Trace formula consists of 588 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:21:02,820 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:21:02,886 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-12-13 15:21:02,886 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:21:02,887 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [521508317] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:21:02,887 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:21:02,887 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2022-12-13 15:21:02,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040703970] [2022-12-13 15:21:02,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:21:02,888 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:21:02,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:21:02,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:21:02,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:21:02,889 INFO L87 Difference]: Start difference. First operand 230898 states and 376129 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 15:21:46,115 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:21:46,115 INFO L93 Difference]: Finished difference Result 680315 states and 1119606 transitions. [2022-12-13 15:21:46,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:21:46,116 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 147 [2022-12-13 15:21:46,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:21:47,858 INFO L225 Difference]: With dead ends: 680315 [2022-12-13 15:21:47,858 INFO L226 Difference]: Without dead ends: 451530 [2022-12-13 15:21:48,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:21:48,351 INFO L413 NwaCegarLoop]: 433 mSDtfsCounter, 360 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 360 SdHoareTripleChecker+Valid, 682 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:21:48,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [360 Valid, 682 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:21:48,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 451530 states. [2022-12-13 15:22:33,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 451530 to 448438. [2022-12-13 15:22:33,559 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 448438 states, 395221 states have (on average 1.4944878941149382) internal successors, (590653), 399870 states have internal predecessors, (590653), 31535 states have call successors, (31535), 18547 states have call predecessors, (31535), 21680 states have return successors, (109010), 30277 states have call predecessors, (109010), 31531 states have call successors, (109010) [2022-12-13 15:22:35,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 448438 states to 448438 states and 731198 transitions. [2022-12-13 15:22:35,491 INFO L78 Accepts]: Start accepts. Automaton has 448438 states and 731198 transitions. Word has length 147 [2022-12-13 15:22:35,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:22:35,491 INFO L495 AbstractCegarLoop]: Abstraction has 448438 states and 731198 transitions. [2022-12-13 15:22:35,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-12-13 15:22:35,492 INFO L276 IsEmpty]: Start isEmpty. Operand 448438 states and 731198 transitions. [2022-12-13 15:22:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-12-13 15:22:36,109 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:22:36,109 INFO L195 NwaCegarLoop]: trace histogram [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, 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] [2022-12-13 15:22:36,114 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-13 15:22:36,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-12-13 15:22:36,311 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:22:36,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:22:36,312 INFO L85 PathProgramCache]: Analyzing trace with hash 541183297, now seen corresponding path program 1 times [2022-12-13 15:22:36,313 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:22:36,313 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1744611043] [2022-12-13 15:22:36,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:36,314 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:22:36,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:22:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-12-13 15:22:36,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-12-13 15:22:36,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-12-13 15:22:36,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:22:36,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-12-13 15:22:36,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2022-12-13 15:22:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-12-13 15:22:36,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,434 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-12-13 15:22:36,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:22:36,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1744611043] [2022-12-13 15:22:36,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1744611043] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:22:36,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1070386180] [2022-12-13 15:22:36,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:22:36,434 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:22:36,435 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:22:36,435 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:22:36,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-13 15:22:36,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:22:36,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:22:36,509 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:22:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-12-13 15:22:36,527 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:22:36,527 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1070386180] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:22:36,527 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:22:36,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-12-13 15:22:36,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794245894] [2022-12-13 15:22:36,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:22:36,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:22:36,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:22:36,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:22:36,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:22:36,529 INFO L87 Difference]: Start difference. First operand 448438 states and 731198 transitions. Second operand has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 15:24:01,513 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:24:01,513 INFO L93 Difference]: Finished difference Result 1322786 states and 2168366 transitions. [2022-12-13 15:24:01,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:24:01,514 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 147 [2022-12-13 15:24:01,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:24:03,481 INFO L225 Difference]: With dead ends: 1322786 [2022-12-13 15:24:03,481 INFO L226 Difference]: Without dead ends: 523306 [2022-12-13 15:24:05,059 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-13 15:24:05,059 INFO L413 NwaCegarLoop]: 658 mSDtfsCounter, 233 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:24:05,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1077 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:24:05,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 523306 states. [2022-12-13 15:24:55,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 523306 to 523306. [2022-12-13 15:24:56,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 523306 states, 461537 states have (on average 1.492318059007187) internal successors, (688760), 466698 states have internal predecessors, (688760), 36527 states have call successors, (36527), 21595 states have call predecessors, (36527), 25240 states have return successors, (124650), 35269 states have call predecessors, (124650), 36523 states have call successors, (124650) [2022-12-13 15:24:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 523306 states to 523306 states and 849937 transitions. [2022-12-13 15:24:58,390 INFO L78 Accepts]: Start accepts. Automaton has 523306 states and 849937 transitions. Word has length 147 [2022-12-13 15:24:58,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:24:58,390 INFO L495 AbstractCegarLoop]: Abstraction has 523306 states and 849937 transitions. [2022-12-13 15:24:58,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.0) internal successors, (99), 3 states have internal predecessors, (99), 3 states have call successors, (9), 3 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-12-13 15:24:58,390 INFO L276 IsEmpty]: Start isEmpty. Operand 523306 states and 849937 transitions. [2022-12-13 15:24:59,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-12-13 15:24:59,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:24:59,128 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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, 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] [2022-12-13 15:24:59,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-12-13 15:24:59,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-12-13 15:24:59,329 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:24:59,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:24:59,329 INFO L85 PathProgramCache]: Analyzing trace with hash 1295213162, now seen corresponding path program 1 times [2022-12-13 15:24:59,329 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:24:59,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672752777] [2022-12-13 15:24:59,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:59,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:24:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:24:59,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:24:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:24:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:24:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:24:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:24:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:24:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 15:24:59,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:24:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 15:24:59,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 15:24:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:24:59,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 15:24:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-12-13 15:24:59,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-12-13 15:24:59,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-12-13 15:24:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-12-13 15:24:59,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,445 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-12-13 15:24:59,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:24:59,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672752777] [2022-12-13 15:24:59,445 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672752777] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:24:59,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [333427183] [2022-12-13 15:24:59,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:24:59,445 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:24:59,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:24:59,446 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:24:59,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-13 15:24:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:24:59,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 552 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:24:59,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:24:59,610 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-12-13 15:24:59,610 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:24:59,610 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [333427183] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:24:59,610 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:24:59,610 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-12-13 15:24:59,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049249490] [2022-12-13 15:24:59,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:24:59,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:24:59,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:24:59,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:24:59,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:24:59,611 INFO L87 Difference]: Start difference. First operand 523306 states and 849937 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 15:25:47,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:25:47,207 INFO L93 Difference]: Finished difference Result 527232 states and 854766 transitions. [2022-12-13 15:25:47,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:25:47,208 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-12-13 15:25:47,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:25:49,097 INFO L225 Difference]: With dead ends: 527232 [2022-12-13 15:25:49,097 INFO L226 Difference]: Without dead ends: 525218 [2022-12-13 15:25:49,314 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:25:49,314 INFO L413 NwaCegarLoop]: 434 mSDtfsCounter, 61 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:25:49,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 835 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:25:49,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 525218 states. [2022-12-13 15:26:41,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 525218 to 525176. [2022-12-13 15:26:41,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525176 states, 462994 states have (on average 1.4914102558564475) internal successors, (690514), 468178 states have internal predecessors, (690514), 36734 states have call successors, (36734), 21756 states have call predecessors, (36734), 25446 states have return successors, (124918), 35498 states have call predecessors, (124918), 36730 states have call successors, (124918) [2022-12-13 15:26:43,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525176 states to 525176 states and 852166 transitions. [2022-12-13 15:26:43,954 INFO L78 Accepts]: Start accepts. Automaton has 525176 states and 852166 transitions. Word has length 163 [2022-12-13 15:26:43,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:26:43,955 INFO L495 AbstractCegarLoop]: Abstraction has 525176 states and 852166 transitions. [2022-12-13 15:26:43,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-12-13 15:26:43,955 INFO L276 IsEmpty]: Start isEmpty. Operand 525176 states and 852166 transitions. [2022-12-13 15:26:45,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 15:26:45,133 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:26:45,133 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:26:45,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-12-13 15:26:45,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-12-13 15:26:45,336 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:26:45,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:26:45,337 INFO L85 PathProgramCache]: Analyzing trace with hash -1625342387, now seen corresponding path program 1 times [2022-12-13 15:26:45,337 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:26:45,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428488834] [2022-12-13 15:26:45,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:45,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:26:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:26:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:26:45,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:26:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:26:45,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:26:45,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:26:45,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:26:45,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 15:26:45,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:26:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 15:26:45,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 15:26:45,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:26:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:26:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 15:26:45,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 15:26:45,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 15:26:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:26:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 15:26:45,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 15:26:45,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 15:26:45,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,511 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-12-13 15:26:45,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:26:45,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428488834] [2022-12-13 15:26:45,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428488834] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:26:45,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [905185148] [2022-12-13 15:26:45,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:26:45,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:26:45,512 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:26:45,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:26:45,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-13 15:26:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:26:45,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 624 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:26:45,625 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:26:45,753 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-12-13 15:26:45,753 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:26:45,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [905185148] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:26:45,753 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:26:45,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-12-13 15:26:45,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [924296234] [2022-12-13 15:26:45,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:26:45,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:26:45,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:26:45,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:26:45,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:26:45,755 INFO L87 Difference]: Start difference. First operand 525176 states and 852166 transitions. Second operand has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 15:27:32,939 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:27:32,939 INFO L93 Difference]: Finished difference Result 533096 states and 861774 transitions. [2022-12-13 15:27:32,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:27:32,940 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 195 [2022-12-13 15:27:32,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:27:34,746 INFO L225 Difference]: With dead ends: 533096 [2022-12-13 15:27:34,746 INFO L226 Difference]: Without dead ends: 529136 [2022-12-13 15:27:34,932 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:27:34,932 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 52 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 835 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:27:34,932 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 835 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:27:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529136 states. [2022-12-13 15:28:25,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529136 to 529126. [2022-12-13 15:28:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529126 states, 466072 states have (on average 1.4895016220669768) internal successors, (694215), 471303 states have internal predecessors, (694215), 37176 states have call successors, (37176), 22078 states have call predecessors, (37176), 25876 states have return successors, (125525), 36001 states have call predecessors, (125525), 37172 states have call successors, (125525) [2022-12-13 15:28:27,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529126 states to 529126 states and 856916 transitions. [2022-12-13 15:28:27,975 INFO L78 Accepts]: Start accepts. Automaton has 529126 states and 856916 transitions. Word has length 195 [2022-12-13 15:28:27,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 15:28:27,976 INFO L495 AbstractCegarLoop]: Abstraction has 529126 states and 856916 transitions. [2022-12-13 15:28:27,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 33.333333333333336) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-12-13 15:28:27,976 INFO L276 IsEmpty]: Start isEmpty. Operand 529126 states and 856916 transitions. [2022-12-13 15:28:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2022-12-13 15:28:28,967 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 15:28:28,968 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 15:28:28,972 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-13 15:28:29,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-12-13 15:28:29,170 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-13 15:28:29,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 15:28:29,171 INFO L85 PathProgramCache]: Analyzing trace with hash 1772231631, now seen corresponding path program 1 times [2022-12-13 15:28:29,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-12-13 15:28:29,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929598462] [2022-12-13 15:28:29,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:29,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-13 15:28:29,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-12-13 15:28:29,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:28:29,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-12-13 15:28:29,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:28:29,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-12-13 15:28:29,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-12-13 15:28:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-12-13 15:28:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-12-13 15:28:29,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-12-13 15:28:29,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-12-13 15:28:29,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-12-13 15:28:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:28:29,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-12-13 15:28:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-12-13 15:28:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-12-13 15:28:29,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-12-13 15:28:29,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-12-13 15:28:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-12-13 15:28:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-12-13 15:28:29,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-12-13 15:28:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,446 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2022-12-13 15:28:29,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-12-13 15:28:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929598462] [2022-12-13 15:28:29,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929598462] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 15:28:29,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1281156946] [2022-12-13 15:28:29,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 15:28:29,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-13 15:28:29,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 15:28:29,447 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-13 15:28:29,448 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8972b27d-4d94-48f2-8034-276da2d95b6e/bin/uautomizer-uyxdKDjOR8/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-13 15:28:29,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 15:28:29,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 621 conjuncts, 2 conjunts are in the unsatisfiable core [2022-12-13 15:28:29,527 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 15:28:29,645 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2022-12-13 15:28:29,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 15:28:29,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1281156946] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 15:28:29,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-13 15:28:29,645 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-12-13 15:28:29,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [642908609] [2022-12-13 15:28:29,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 15:28:29,646 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-12-13 15:28:29,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-12-13 15:28:29,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-12-13 15:28:29,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:28:29,646 INFO L87 Difference]: Start difference. First operand 529126 states and 856916 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-12-13 15:29:18,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 15:29:18,109 INFO L93 Difference]: Finished difference Result 535632 states and 865108 transitions. [2022-12-13 15:29:18,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-12-13 15:29:18,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 2 states have call successors, (15), 2 states have call predecessors, (15), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 195 [2022-12-13 15:29:18,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 15:29:20,159 INFO L225 Difference]: With dead ends: 535632 [2022-12-13 15:29:20,160 INFO L226 Difference]: Without dead ends: 521207 [2022-12-13 15:29:20,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 241 GetRequests, 232 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-12-13 15:29:20,372 INFO L413 NwaCegarLoop]: 406 mSDtfsCounter, 302 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 302 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 15:29:20,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [302 Valid, 406 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 15:29:20,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 521207 states.