./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a --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 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 --- 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-b5237d8 [2022-11-21 14:02:06,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 14:02:06,338 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 14:02:06,380 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 14:02:06,380 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 14:02:06,384 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 14:02:06,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 14:02:06,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 14:02:06,393 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 14:02:06,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 14:02:06,400 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 14:02:06,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 14:02:06,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 14:02:06,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 14:02:06,407 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 14:02:06,409 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 14:02:06,410 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 14:02:06,411 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 14:02:06,413 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 14:02:06,420 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 14:02:06,421 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 14:02:06,424 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 14:02:06,425 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 14:02:06,426 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 14:02:06,437 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 14:02:06,437 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 14:02:06,438 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 14:02:06,439 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 14:02:06,440 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 14:02:06,441 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 14:02:06,442 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 14:02:06,442 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 14:02:06,444 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 14:02:06,445 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 14:02:06,447 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 14:02:06,447 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 14:02:06,448 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 14:02:06,448 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 14:02:06,449 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 14:02:06,450 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 14:02:06,450 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 14:02:06,451 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 14:02:06,493 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 14:02:06,493 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 14:02:06,494 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 14:02:06,494 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 14:02:06,495 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 14:02:06,496 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 14:02:06,497 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 14:02:06,497 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 14:02:06,497 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 14:02:06,498 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 14:02:06,499 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 14:02:06,499 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 14:02:06,500 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 14:02:06,500 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 14:02:06,500 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 14:02:06,500 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 14:02:06,501 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 14:02:06,501 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 14:02:06,501 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 14:02:06,502 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 14:02:06,502 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 14:02:06,502 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 14:02:06,503 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 14:02:06,503 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 14:02:06,503 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:02:06,504 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 14:02:06,504 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 14:02:06,504 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 14:02:06,505 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 14:02:06,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 14:02:06,506 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 14:02:06,506 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 14:02:06,507 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 14:02:06,507 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5ab060d6e8ec67586454a3fd3cad3b6749e261734a1b9e4129e037a184a704d9 [2022-11-21 14:02:06,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 14:02:06,808 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 14:02:06,811 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 14:02:06,812 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 14:02:06,813 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 14:02:06,814 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2022-11-21 14:02:09,994 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 14:02:10,767 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 14:02:10,768 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c [2022-11-21 14:02:10,813 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/data/1bf783c63/43de48b57d6e4f3696d89d14f755e82f/FLAGb0422e257 [2022-11-21 14:02:10,829 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/data/1bf783c63/43de48b57d6e4f3696d89d14f755e82f [2022-11-21 14:02:10,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 14:02:10,834 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 14:02:10,836 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:10,836 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 14:02:10,840 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 14:02:10,841 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:10" (1/1) ... [2022-11-21 14:02:10,842 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5560fe43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:10, skipping insertion in model container [2022-11-21 14:02:10,842 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 02:02:10" (1/1) ... [2022-11-21 14:02:10,851 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 14:02:11,141 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 14:02:13,500 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_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c[381679,381692] [2022-11-21 14:02:13,525 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_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c[383339,383352] [2022-11-21 14:02:13,797 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:13,811 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 14:02:15,104 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_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c[381679,381692] [2022-11-21 14:02:15,109 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_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/sv-benchmarks/c/combinations/Problem05_label43+token_ring.09.cil-2.c[383339,383352] [2022-11-21 14:02:15,143 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 14:02:15,268 INFO L208 MainTranslator]: Completed translation [2022-11-21 14:02:15,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15 WrapperNode [2022-11-21 14:02:15,269 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 14:02:15,270 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 14:02:15,270 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 14:02:15,270 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 14:02:15,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:15,359 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:15,894 INFO L138 Inliner]: procedures = 62, calls = 69, calls flagged for inlining = 39, calls inlined = 39, statements flattened = 13030 [2022-11-21 14:02:15,895 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 14:02:15,895 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 14:02:15,896 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 14:02:15,896 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 14:02:15,906 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:15,907 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:15,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:15,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:16,425 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:16,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:16,518 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:16,538 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:16,643 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 14:02:16,645 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 14:02:16,645 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 14:02:16,645 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 14:02:16,648 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (1/1) ... [2022-11-21 14:02:16,654 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 14:02:16,664 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 14:02:16,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 14:02:16,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0638e99d-0d96-4ea5-a91b-ee8d6545c4c5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 14:02:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 14:02:16,726 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2022-11-21 14:02:16,726 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2022-11-21 14:02:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 14:02:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 14:02:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2022-11-21 14:02:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2022-11-21 14:02:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-11-21 14:02:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-11-21 14:02:16,727 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2022-11-21 14:02:16,727 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2022-11-21 14:02:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2022-11-21 14:02:16,728 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2022-11-21 14:02:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2022-11-21 14:02:16,728 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2022-11-21 14:02:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 14:02:16,728 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 14:02:16,728 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 14:02:16,911 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 14:02:16,913 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 14:02:26,601 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 14:02:26,647 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 14:02:26,647 INFO L300 CfgBuilder]: Removed 13 assume(true) statements. [2022-11-21 14:02:26,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:26 BoogieIcfgContainer [2022-11-21 14:02:26,655 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 14:02:26,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 14:02:26,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 14:02:26,661 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 14:02:26,662 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 02:02:10" (1/3) ... [2022-11-21 14:02:26,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66152847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:26, skipping insertion in model container [2022-11-21 14:02:26,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 02:02:15" (2/3) ... [2022-11-21 14:02:26,663 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66152847 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 02:02:26, skipping insertion in model container [2022-11-21 14:02:26,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 02:02:26" (3/3) ... [2022-11-21 14:02:26,665 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem05_label43+token_ring.09.cil-2.c [2022-11-21 14:02:26,685 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 14:02:26,686 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 14:02:26,799 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 14:02:26,806 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;@5649346d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 14:02:26,806 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 14:02:26,819 INFO L276 IsEmpty]: Start isEmpty. Operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) [2022-11-21 14:02:26,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:02:26,837 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:26,838 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:26,838 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:26,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:26,844 INFO L85 PathProgramCache]: Analyzing trace with hash 416596476, now seen corresponding path program 1 times [2022-11-21 14:02:26,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:26,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426499250] [2022-11-21 14:02:26,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:26,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:27,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:27,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:02:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:27,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:02:27,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:27,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:27,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:27,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:02:27,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:02:27,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:27,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:27,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:27,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426499250] [2022-11-21 14:02:27,582 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426499250] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:27,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:27,583 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 14:02:27,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184840133] [2022-11-21 14:02:27,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:27,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 14:02:27,592 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:27,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 14:02:27,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 14:02:27,664 INFO L87 Difference]: Start difference. First operand has 2498 states, 2463 states have (on average 1.847340641494113) internal successors, (4550), 2468 states have internal predecessors, (4550), 25 states have call successors, (25), 7 states have call predecessors, (25), 7 states have return successors, (25), 24 states have call predecessors, (25), 25 states have call successors, (25) Second operand has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:29,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:29,890 INFO L93 Difference]: Finished difference Result 5096 states and 9373 transitions. [2022-11-21 14:02:29,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 14:02:29,893 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 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 146 [2022-11-21 14:02:29,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:29,922 INFO L225 Difference]: With dead ends: 5096 [2022-11-21 14:02:29,922 INFO L226 Difference]: Without dead ends: 2539 [2022-11-21 14:02:29,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-11-21 14:02:29,939 INFO L413 NwaCegarLoop]: 4315 mSDtfsCounter, 825 mSDsluCounter, 12405 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 846 SdHoareTripleChecker+Valid, 16720 SdHoareTripleChecker+Invalid, 860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:29,940 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [846 Valid, 16720 Invalid, 860 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [54 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-21 14:02:29,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2539 states. [2022-11-21 14:02:30,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2539 to 2430. [2022-11-21 14:02:30,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2430 states, 2397 states have (on average 1.8327075511055486) internal successors, (4393), 2400 states have internal predecessors, (4393), 25 states have call successors, (25), 7 states have call predecessors, (25), 6 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-11-21 14:02:30,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2430 states to 2430 states and 4441 transitions. [2022-11-21 14:02:30,171 INFO L78 Accepts]: Start accepts. Automaton has 2430 states and 4441 transitions. Word has length 146 [2022-11-21 14:02:30,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:30,171 INFO L495 AbstractCegarLoop]: Abstraction has 2430 states and 4441 transitions. [2022-11-21 14:02:30,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 27.0) internal successors, (135), 3 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:30,172 INFO L276 IsEmpty]: Start isEmpty. Operand 2430 states and 4441 transitions. [2022-11-21 14:02:30,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:02:30,179 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:30,179 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:30,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 14:02:30,180 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:30,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash -982357126, now seen corresponding path program 1 times [2022-11-21 14:02:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:30,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92029951] [2022-11-21 14:02:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:30,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:30,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:02:30,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:30,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:02:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:30,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:30,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:30,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:02:30,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:30,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:02:30,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:30,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:30,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:30,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92029951] [2022-11-21 14:02:30,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [92029951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:30,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:30,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 14:02:30,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028608706] [2022-11-21 14:02:30,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:30,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 14:02:30,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:30,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 14:02:30,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 14:02:30,652 INFO L87 Difference]: Start difference. First operand 2430 states and 4441 transitions. Second operand has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:34,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:34,552 INFO L93 Difference]: Finished difference Result 3244 states and 5752 transitions. [2022-11-21 14:02:34,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 14:02:34,553 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 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 146 [2022-11-21 14:02:34,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:34,565 INFO L225 Difference]: With dead ends: 3244 [2022-11-21 14:02:34,565 INFO L226 Difference]: Without dead ends: 2952 [2022-11-21 14:02:34,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:02:34,569 INFO L413 NwaCegarLoop]: 4251 mSDtfsCounter, 5189 mSDsluCounter, 12667 mSDsCounter, 0 mSdLazyCounter, 1858 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5205 SdHoareTripleChecker+Valid, 16918 SdHoareTripleChecker+Invalid, 1962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 1858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:34,570 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5205 Valid, 16918 Invalid, 1962 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [104 Valid, 1858 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 14:02:34,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2952 states. [2022-11-21 14:02:34,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2952 to 2733. [2022-11-21 14:02:34,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2733 states, 2675 states have (on average 1.8078504672897195) internal successors, (4836), 2679 states have internal predecessors, (4836), 43 states have call successors, (43), 13 states have call predecessors, (43), 13 states have return successors, (44), 41 states have call predecessors, (44), 41 states have call successors, (44) [2022-11-21 14:02:34,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2733 states to 2733 states and 4923 transitions. [2022-11-21 14:02:34,694 INFO L78 Accepts]: Start accepts. Automaton has 2733 states and 4923 transitions. Word has length 146 [2022-11-21 14:02:34,695 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:34,696 INFO L495 AbstractCegarLoop]: Abstraction has 2733 states and 4923 transitions. [2022-11-21 14:02:34,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 22.5) internal successors, (135), 4 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:34,696 INFO L276 IsEmpty]: Start isEmpty. Operand 2733 states and 4923 transitions. [2022-11-21 14:02:34,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:02:34,701 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:34,702 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:34,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 14:02:34,703 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:34,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:34,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1511144566, now seen corresponding path program 1 times [2022-11-21 14:02:34,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:34,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879270365] [2022-11-21 14:02:34,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:34,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:34,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:34,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:02:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:34,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:02:34,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:35,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:35,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:02:35,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:02:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:35,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:35,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:35,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879270365] [2022-11-21 14:02:35,079 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879270365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:35,079 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:35,080 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:02:35,080 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227661644] [2022-11-21 14:02:35,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:35,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:02:35,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:35,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:02:35,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:02:35,082 INFO L87 Difference]: Start difference. First operand 2733 states and 4923 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:39,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:39,166 INFO L93 Difference]: Finished difference Result 3972 states and 6919 transitions. [2022-11-21 14:02:39,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:02:39,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:02:39,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:39,184 INFO L225 Difference]: With dead ends: 3972 [2022-11-21 14:02:39,185 INFO L226 Difference]: Without dead ends: 3377 [2022-11-21 14:02:39,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:02:39,190 INFO L413 NwaCegarLoop]: 4423 mSDtfsCounter, 5218 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2809 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5234 SdHoareTripleChecker+Valid, 21826 SdHoareTripleChecker+Invalid, 2870 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 2809 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:39,191 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5234 Valid, 21826 Invalid, 2870 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [61 Valid, 2809 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-21 14:02:39,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3377 states. [2022-11-21 14:02:39,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3377 to 3015. [2022-11-21 14:02:39,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3015 states, 2932 states have (on average 1.7861527967257844) internal successors, (5237), 2937 states have internal predecessors, (5237), 61 states have call successors, (61), 19 states have call predecessors, (61), 20 states have return successors, (64), 60 states have call predecessors, (64), 59 states have call successors, (64) [2022-11-21 14:02:39,408 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3015 states to 3015 states and 5362 transitions. [2022-11-21 14:02:39,409 INFO L78 Accepts]: Start accepts. Automaton has 3015 states and 5362 transitions. Word has length 146 [2022-11-21 14:02:39,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:39,410 INFO L495 AbstractCegarLoop]: Abstraction has 3015 states and 5362 transitions. [2022-11-21 14:02:39,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:39,410 INFO L276 IsEmpty]: Start isEmpty. Operand 3015 states and 5362 transitions. [2022-11-21 14:02:39,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:02:39,420 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:39,420 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:39,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 14:02:39,422 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:39,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:39,423 INFO L85 PathProgramCache]: Analyzing trace with hash 804547960, now seen corresponding path program 1 times [2022-11-21 14:02:39,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:39,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349120428] [2022-11-21 14:02:39,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:39,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:39,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:39,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:02:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:39,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:02:39,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:39,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:02:39,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:39,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:02:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:39,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:39,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:39,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349120428] [2022-11-21 14:02:39,791 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349120428] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:39,791 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:39,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:02:39,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264127583] [2022-11-21 14:02:39,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:39,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:02:39,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:39,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:02:39,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:02:39,794 INFO L87 Difference]: Start difference. First operand 3015 states and 5362 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:44,167 INFO L93 Difference]: Finished difference Result 5044 states and 8626 transitions. [2022-11-21 14:02:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:02:44,168 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:02:44,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:44,190 INFO L225 Difference]: With dead ends: 5044 [2022-11-21 14:02:44,193 INFO L226 Difference]: Without dead ends: 4167 [2022-11-21 14:02:44,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:02:44,210 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5212 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2788 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5228 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2851 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:44,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5228 Valid, 21824 Invalid, 2851 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2788 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 14:02:44,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4167 states. [2022-11-21 14:02:44,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4167 to 3583. [2022-11-21 14:02:44,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3583 states, 3450 states have (on average 1.752463768115942) internal successors, (6046), 3457 states have internal predecessors, (6046), 97 states have call successors, (97), 31 states have call predecessors, (97), 34 states have return successors, (108), 98 states have call predecessors, (108), 95 states have call successors, (108) [2022-11-21 14:02:44,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3583 states to 3583 states and 6251 transitions. [2022-11-21 14:02:44,569 INFO L78 Accepts]: Start accepts. Automaton has 3583 states and 6251 transitions. Word has length 146 [2022-11-21 14:02:44,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:44,578 INFO L495 AbstractCegarLoop]: Abstraction has 3583 states and 6251 transitions. [2022-11-21 14:02:44,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:44,578 INFO L276 IsEmpty]: Start isEmpty. Operand 3583 states and 6251 transitions. [2022-11-21 14:02:44,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:02:44,581 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:44,582 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:44,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 14:02:44,582 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:44,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:44,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1666381562, now seen corresponding path program 1 times [2022-11-21 14:02:44,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:44,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323017979] [2022-11-21 14:02:44,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:44,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:02:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:02:44,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:44,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:02:44,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:02:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:44,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:44,910 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:44,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323017979] [2022-11-21 14:02:44,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323017979] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:44,912 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:44,912 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:02:44,912 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673965180] [2022-11-21 14:02:44,912 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:44,913 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:02:44,913 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:44,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:02:44,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:02:44,914 INFO L87 Difference]: Start difference. First operand 3583 states and 6251 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:48,984 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:48,984 INFO L93 Difference]: Finished difference Result 7114 states and 11903 transitions. [2022-11-21 14:02:48,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:02:48,985 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:02:48,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:49,009 INFO L225 Difference]: With dead ends: 7114 [2022-11-21 14:02:49,010 INFO L226 Difference]: Without dead ends: 5669 [2022-11-21 14:02:49,016 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:02:49,017 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5211 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2775 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5227 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2775 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:49,018 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5227 Valid, 21824 Invalid, 2838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2775 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-21 14:02:49,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5669 states. [2022-11-21 14:02:49,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5669 to 4720. [2022-11-21 14:02:49,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4720 states, 4487 states have (on average 1.70804546467573) internal successors, (7664), 4498 states have internal predecessors, (7664), 169 states have call successors, (169), 55 states have call predecessors, (169), 62 states have return successors, (202), 174 states have call predecessors, (202), 167 states have call successors, (202) [2022-11-21 14:02:49,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4720 states to 4720 states and 8035 transitions. [2022-11-21 14:02:49,407 INFO L78 Accepts]: Start accepts. Automaton has 4720 states and 8035 transitions. Word has length 146 [2022-11-21 14:02:49,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:49,408 INFO L495 AbstractCegarLoop]: Abstraction has 4720 states and 8035 transitions. [2022-11-21 14:02:49,409 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:49,409 INFO L276 IsEmpty]: Start isEmpty. Operand 4720 states and 8035 transitions. [2022-11-21 14:02:49,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:02:49,413 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:49,413 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:49,413 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 14:02:49,414 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:49,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:49,414 INFO L85 PathProgramCache]: Analyzing trace with hash -384027336, now seen corresponding path program 1 times [2022-11-21 14:02:49,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:49,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [141946293] [2022-11-21 14:02:49,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:49,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:49,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:02:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:02:49,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:49,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:02:49,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:02:49,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:49,682 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:49,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:49,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [141946293] [2022-11-21 14:02:49,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [141946293] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:49,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:49,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:02:49,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800886634] [2022-11-21 14:02:49,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:49,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:02:49,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:49,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:02:49,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:02:49,685 INFO L87 Difference]: Start difference. First operand 4720 states and 8035 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:53,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:53,943 INFO L93 Difference]: Finished difference Result 11253 states and 18473 transitions. [2022-11-21 14:02:53,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:02:53,944 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:02:53,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:53,983 INFO L225 Difference]: With dead ends: 11253 [2022-11-21 14:02:53,983 INFO L226 Difference]: Without dead ends: 8671 [2022-11-21 14:02:53,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:02:53,996 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5210 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2762 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5226 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2825 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:53,997 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5226 Valid, 21824 Invalid, 2825 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2762 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 14:02:54,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8671 states. [2022-11-21 14:02:54,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8671 to 7001. [2022-11-21 14:02:54,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7001 states, 6568 states have (on average 1.6610840438489647) internal successors, (10910), 6587 states have internal predecessors, (10910), 313 states have call successors, (313), 103 states have call predecessors, (313), 118 states have return successors, (408), 326 states have call predecessors, (408), 311 states have call successors, (408) [2022-11-21 14:02:54,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7001 states to 7001 states and 11631 transitions. [2022-11-21 14:02:54,717 INFO L78 Accepts]: Start accepts. Automaton has 7001 states and 11631 transitions. Word has length 146 [2022-11-21 14:02:54,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:02:54,718 INFO L495 AbstractCegarLoop]: Abstraction has 7001 states and 11631 transitions. [2022-11-21 14:02:54,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:54,718 INFO L276 IsEmpty]: Start isEmpty. Operand 7001 states and 11631 transitions. [2022-11-21 14:02:54,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:02:54,723 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:02:54,723 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:02:54,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 14:02:54,724 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:02:54,725 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:02:54,725 INFO L85 PathProgramCache]: Analyzing trace with hash 104019770, now seen corresponding path program 1 times [2022-11-21 14:02:54,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:02:54,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [807185470] [2022-11-21 14:02:54,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:02:54,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:02:54,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:02:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:02:54,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:02:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:02:54,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:02:54,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:02:54,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:02:54,978 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:02:54,978 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [807185470] [2022-11-21 14:02:54,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [807185470] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:02:54,979 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:02:54,979 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:02:54,979 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125313449] [2022-11-21 14:02:54,979 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:02:54,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:02:54,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:02:54,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:02:54,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:02:54,981 INFO L87 Difference]: Start difference. First operand 7001 states and 11631 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:02:59,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:02:59,628 INFO L93 Difference]: Finished difference Result 19532 states and 31675 transitions. [2022-11-21 14:02:59,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:02:59,628 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:02:59,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:02:59,690 INFO L225 Difference]: With dead ends: 19532 [2022-11-21 14:02:59,690 INFO L226 Difference]: Without dead ends: 14669 [2022-11-21 14:02:59,710 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:02:59,711 INFO L413 NwaCegarLoop]: 4256 mSDtfsCounter, 5291 mSDsluCounter, 16867 mSDsCounter, 0 mSdLazyCounter, 2452 mSolverCounterSat, 95 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5307 SdHoareTripleChecker+Valid, 21123 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 95 IncrementalHoareTripleChecker+Valid, 2452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-21 14:02:59,711 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5307 Valid, 21123 Invalid, 2547 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [95 Valid, 2452 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-21 14:02:59,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14669 states. [2022-11-21 14:03:00,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14669 to 11578. [2022-11-21 14:03:00,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.621591437878083) internal successors, (17424), 10780 states have internal predecessors, (17424), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-21 14:03:00,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18899 transitions. [2022-11-21 14:03:00,652 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18899 transitions. Word has length 146 [2022-11-21 14:03:00,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:00,652 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18899 transitions. [2022-11-21 14:03:00,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:00,653 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18899 transitions. [2022-11-21 14:03:00,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:03:00,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:00,662 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:00,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 14:03:00,663 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:00,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:00,663 INFO L85 PathProgramCache]: Analyzing trace with hash -988615432, now seen corresponding path program 1 times [2022-11-21 14:03:00,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:00,664 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [130414469] [2022-11-21 14:03:00,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:00,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:00,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:00,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:03:00,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:03:00,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:00,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:03:00,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:00,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:03:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:00,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:03:00,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:00,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:00,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:00,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [130414469] [2022-11-21 14:03:00,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [130414469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:00,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:00,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:03:00,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876308091] [2022-11-21 14:03:00,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:00,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:03:00,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:00,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:03:00,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:03:00,915 INFO L87 Difference]: Start difference. First operand 11578 states and 18899 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:04,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:04,186 INFO L93 Difference]: Finished difference Result 24276 states and 39482 transitions. [2022-11-21 14:03:04,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 14:03:04,187 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:03:04,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:04,246 INFO L225 Difference]: With dead ends: 24276 [2022-11-21 14:03:04,246 INFO L226 Difference]: Without dead ends: 14836 [2022-11-21 14:03:04,282 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-21 14:03:04,283 INFO L413 NwaCegarLoop]: 4207 mSDtfsCounter, 4998 mSDsluCounter, 12485 mSDsCounter, 0 mSdLazyCounter, 1272 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5015 SdHoareTripleChecker+Valid, 16692 SdHoareTripleChecker+Invalid, 1361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:04,283 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5015 Valid, 16692 Invalid, 1361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1272 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-21 14:03:04,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14836 states. [2022-11-21 14:03:05,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14836 to 11578. [2022-11-21 14:03:05,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11578 states, 10745 states have (on average 1.6185202419730107) internal successors, (17391), 10780 states have internal predecessors, (17391), 601 states have call successors, (601), 199 states have call predecessors, (601), 230 states have return successors, (874), 630 states have call predecessors, (874), 599 states have call successors, (874) [2022-11-21 14:03:05,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11578 states to 11578 states and 18866 transitions. [2022-11-21 14:03:05,898 INFO L78 Accepts]: Start accepts. Automaton has 11578 states and 18866 transitions. Word has length 146 [2022-11-21 14:03:05,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:05,898 INFO L495 AbstractCegarLoop]: Abstraction has 11578 states and 18866 transitions. [2022-11-21 14:03:05,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:05,899 INFO L276 IsEmpty]: Start isEmpty. Operand 11578 states and 18866 transitions. [2022-11-21 14:03:05,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:03:05,907 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:05,908 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:05,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 14:03:05,908 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:05,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:05,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2024179578, now seen corresponding path program 1 times [2022-11-21 14:03:05,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:05,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831309728] [2022-11-21 14:03:05,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:05,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:03:06,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:03:06,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:03:06,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:03:06,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:03:06,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:06,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:06,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:06,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831309728] [2022-11-21 14:03:06,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831309728] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:06,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:06,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:03:06,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433447792] [2022-11-21 14:03:06,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:06,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:03:06,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:06,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:03:06,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:03:06,149 INFO L87 Difference]: Start difference. First operand 11578 states and 18866 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:12,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:12,500 INFO L93 Difference]: Finished difference Result 36057 states and 58041 transitions. [2022-11-21 14:03:12,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:03:12,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:03:12,502 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:12,616 INFO L225 Difference]: With dead ends: 36057 [2022-11-21 14:03:12,616 INFO L226 Difference]: Without dead ends: 26617 [2022-11-21 14:03:12,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:03:12,654 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5201 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2711 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5217 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2774 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2711 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:12,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5217 Valid, 21824 Invalid, 2774 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2711 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-21 14:03:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26617 states. [2022-11-21 14:03:15,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26617 to 20796. [2022-11-21 14:03:15,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20796 states, 19163 states have (on average 1.5898867609455722) internal successors, (30467), 19230 states have internal predecessors, (30467), 1177 states have call successors, (1177), 391 states have call predecessors, (1177), 454 states have return successors, (1968), 1238 states have call predecessors, (1968), 1175 states have call successors, (1968) [2022-11-21 14:03:15,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20796 states to 20796 states and 33612 transitions. [2022-11-21 14:03:15,286 INFO L78 Accepts]: Start accepts. Automaton has 20796 states and 33612 transitions. Word has length 146 [2022-11-21 14:03:15,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:15,287 INFO L495 AbstractCegarLoop]: Abstraction has 20796 states and 33612 transitions. [2022-11-21 14:03:15,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:15,287 INFO L276 IsEmpty]: Start isEmpty. Operand 20796 states and 33612 transitions. [2022-11-21 14:03:15,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:03:15,302 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:15,302 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:15,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 14:03:15,303 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:15,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:15,304 INFO L85 PathProgramCache]: Analyzing trace with hash 181703864, now seen corresponding path program 1 times [2022-11-21 14:03:15,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:15,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [615442028] [2022-11-21 14:03:15,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:15,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:15,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:03:15,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:03:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:03:15,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:03:15,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:03:15,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:15,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:15,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:15,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [615442028] [2022-11-21 14:03:15,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [615442028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:15,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:15,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:03:15,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724800725] [2022-11-21 14:03:15,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:15,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:03:15,554 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:15,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:03:15,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:03:15,555 INFO L87 Difference]: Start difference. First operand 20796 states and 33612 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:25,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:25,853 INFO L93 Difference]: Finished difference Result 69177 states and 111649 transitions. [2022-11-21 14:03:25,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 14:03:25,859 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:03:25,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:26,068 INFO L225 Difference]: With dead ends: 69177 [2022-11-21 14:03:26,068 INFO L226 Difference]: Without dead ends: 50519 [2022-11-21 14:03:26,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 14:03:26,125 INFO L413 NwaCegarLoop]: 4421 mSDtfsCounter, 5206 mSDsluCounter, 17403 mSDsCounter, 0 mSdLazyCounter, 2693 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5222 SdHoareTripleChecker+Valid, 21824 SdHoareTripleChecker+Invalid, 2756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 2693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:26,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5222 Valid, 21824 Invalid, 2756 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [63 Valid, 2693 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-21 14:03:26,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50519 states. [2022-11-21 14:03:30,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50519 to 39293. [2022-11-21 14:03:30,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39293 states, 36060 states have (on average 1.5726289517470882) internal successors, (56709), 36191 states have internal predecessors, (56709), 2329 states have call successors, (2329), 775 states have call predecessors, (2329), 902 states have return successors, (4642), 2454 states have call predecessors, (4642), 2327 states have call successors, (4642) [2022-11-21 14:03:30,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39293 states to 39293 states and 63680 transitions. [2022-11-21 14:03:30,796 INFO L78 Accepts]: Start accepts. Automaton has 39293 states and 63680 transitions. Word has length 146 [2022-11-21 14:03:30,796 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 14:03:30,796 INFO L495 AbstractCegarLoop]: Abstraction has 39293 states and 63680 transitions. [2022-11-21 14:03:30,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:30,796 INFO L276 IsEmpty]: Start isEmpty. Operand 39293 states and 63680 transitions. [2022-11-21 14:03:30,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-11-21 14:03:30,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 14:03:30,824 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 14:03:30,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-21 14:03:30,825 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 14:03:30,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 14:03:30,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1540298822, now seen corresponding path program 1 times [2022-11-21 14:03:30,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 14:03:30,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754559385] [2022-11-21 14:03:30,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 14:03:30,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 14:03:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:30,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 14:03:30,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-11-21 14:03:30,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-11-21 14:03:31,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-21 14:03:31,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-11-21 14:03:31,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 14:03:31,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 14:03:31,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 14:03:31,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754559385] [2022-11-21 14:03:31,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754559385] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 14:03:31,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 14:03:31,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 14:03:31,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447157757] [2022-11-21 14:03:31,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 14:03:31,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 14:03:31,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 14:03:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 14:03:31,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 14:03:31,070 INFO L87 Difference]: Start difference. First operand 39293 states and 63680 transitions. Second operand has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 14:03:55,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 14:03:55,049 INFO L93 Difference]: Finished difference Result 151030 states and 244645 transitions. [2022-11-21 14:03:55,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 14:03:55,050 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.285714285714285) internal successors, (135), 5 states have internal predecessors, (135), 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 146 [2022-11-21 14:03:55,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 14:03:55,768 INFO L225 Difference]: With dead ends: 151030 [2022-11-21 14:03:55,768 INFO L226 Difference]: Without dead ends: 113875 [2022-11-21 14:03:55,875 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 14:03:55,876 INFO L413 NwaCegarLoop]: 4418 mSDtfsCounter, 5283 mSDsluCounter, 17392 mSDsCounter, 0 mSdLazyCounter, 3212 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5298 SdHoareTripleChecker+Valid, 21810 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 3212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-21 14:03:55,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5298 Valid, 21810 Invalid, 3277 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [65 Valid, 3212 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-21 14:03:55,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113875 states.