./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-18 20:48:46,398 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:48:46,400 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:48:46,447 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:48:46,448 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:48:46,450 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:48:46,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:48:46,457 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:48:46,463 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:48:46,465 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:48:46,466 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:48:46,468 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:48:46,470 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:48:46,473 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:48:46,474 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:48:46,476 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:48:46,478 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:48:46,483 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:48:46,484 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:48:46,488 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:48:46,491 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:48:46,493 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:48:46,496 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:48:46,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:48:46,505 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:48:46,509 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:48:46,510 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:48:46,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:48:46,513 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:48:46,514 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:48:46,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:48:46,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:48:46,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:48:46,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:48:46,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:48:46,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:48:46,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:48:46,521 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:48:46,521 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:48:46,522 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:48:46,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:48:46,524 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:48:46,568 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:48:46,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:48:46,569 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:48:46,569 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:48:46,570 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:48:46,570 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:48:46,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:48:46,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:48:46,571 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:48:46,572 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:48:46,573 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:48:46,573 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:48:46,573 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:48:46,574 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:48:46,574 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:48:46,574 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:48:46,574 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:48:46,575 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:48:46,575 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:48:46,575 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:48:46,575 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:48:46,576 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:48:46,576 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:48:46,576 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:48:46,576 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:48:46,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:48:46,578 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:48:46,578 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:48:46,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:48:46,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:48:46,579 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:48:46,579 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:48:46,580 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:48:46,580 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_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a46e7920fd800fb5978581c250ecd4216776e6eac1b8dfb89d2f8a9c2732a33c [2022-11-18 20:48:46,848 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:48:46,881 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:48:46,884 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:48:46,885 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:48:46,886 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:48:46,888 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2022-11-18 20:48:47,003 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/data/7ada46de6/50086dd391f142de93a66b4da9bc9983/FLAGea411cb73 [2022-11-18 20:48:47,547 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:48:47,553 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2022-11-18 20:48:47,575 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/data/7ada46de6/50086dd391f142de93a66b4da9bc9983/FLAGea411cb73 [2022-11-18 20:48:47,857 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/data/7ada46de6/50086dd391f142de93a66b4da9bc9983 [2022-11-18 20:48:47,859 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:48:47,861 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:48:47,862 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:48:47,863 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:48:47,866 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:48:47,866 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:48:47" (1/1) ... [2022-11-18 20:48:47,868 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@563fdadc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:47, skipping insertion in model container [2022-11-18 20:48:47,868 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:48:47" (1/1) ... [2022-11-18 20:48:47,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:48:47,928 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:48:48,122 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2022-11-18 20:48:48,176 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2022-11-18 20:48:48,334 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:48:48,351 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:48:48,369 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[914,927] [2022-11-18 20:48:48,398 WARN L234 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.12.cil-2.c[7115,7128] [2022-11-18 20:48:48,503 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:48:48,542 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:48:48,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48 WrapperNode [2022-11-18 20:48:48,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:48:48,546 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:48:48,546 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:48:48,546 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:48:48,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,582 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,666 INFO L138 Inliner]: procedures = 77, calls = 93, calls flagged for inlining = 46, calls inlined = 46, statements flattened = 1040 [2022-11-18 20:48:48,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:48:48,667 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:48:48,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:48:48,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:48:48,688 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,723 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,753 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,756 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,759 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,766 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:48:48,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:48:48,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:48:48,767 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:48:48,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (1/1) ... [2022-11-18 20:48:48,777 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:48:48,789 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:48:48,801 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:48:48,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:48:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:48:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-18 20:48:48,837 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-18 20:48:48,837 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-18 20:48:48,838 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-18 20:48:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-18 20:48:48,838 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-18 20:48:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-18 20:48:48,838 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-18 20:48:48,838 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-18 20:48:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-18 20:48:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-18 20:48:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-18 20:48:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-18 20:48:48,839 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-18 20:48:48,839 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-18 20:48:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-18 20:48:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-18 20:48:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-18 20:48:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-18 20:48:48,840 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-18 20:48:48,840 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-18 20:48:48,841 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-18 20:48:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:48:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-18 20:48:48,841 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-18 20:48:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-18 20:48:48,841 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-18 20:48:48,841 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:48:48,842 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:48:48,842 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-18 20:48:48,842 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-18 20:48:49,038 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:48:49,043 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:48:50,239 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:48:50,259 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:48:50,259 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-11-18 20:48:50,263 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:50 BoogieIcfgContainer [2022-11-18 20:48:50,263 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:48:50,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:48:50,267 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:48:50,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:48:50,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:48:47" (1/3) ... [2022-11-18 20:48:50,272 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e30e1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:48:50, skipping insertion in model container [2022-11-18 20:48:50,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:48:48" (2/3) ... [2022-11-18 20:48:50,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e30e1f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:48:50, skipping insertion in model container [2022-11-18 20:48:50,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:48:50" (3/3) ... [2022-11-18 20:48:50,276 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.12.cil-2.c [2022-11-18 20:48:50,301 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:48:50,301 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-18 20:48:50,415 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:48:50,425 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;@44333a3, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:48:50,426 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-18 20:48:50,438 INFO L276 IsEmpty]: Start isEmpty. Operand has 483 states, 426 states have (on average 1.6408450704225352) internal successors, (699), 432 states have internal predecessors, (699), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-18 20:48:50,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:48:50,460 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:50,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:50,461 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:50,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:50,467 INFO L85 PathProgramCache]: Analyzing trace with hash -353968614, now seen corresponding path program 1 times [2022-11-18 20:48:50,474 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:50,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404526225] [2022-11-18 20:48:50,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:50,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:50,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:50,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:48:50,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:50,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:48:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:51,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:48:51,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:48:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:51,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:48:51,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:51,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:48:51,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:51,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:48:51,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:51,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:51,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:51,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404526225] [2022-11-18 20:48:51,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1404526225] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:51,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:51,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:48:51,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61989136] [2022-11-18 20:48:51,063 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:51,068 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:48:51,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:51,098 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:48:51,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:48:51,103 INFO L87 Difference]: Start difference. First operand has 483 states, 426 states have (on average 1.6408450704225352) internal successors, (699), 432 states have internal predecessors, (699), 40 states have call successors, (40), 14 states have call predecessors, (40), 14 states have return successors, (40), 39 states have call predecessors, (40), 40 states have call successors, (40) Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:48:53,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:53,068 INFO L93 Difference]: Finished difference Result 1073 states and 1716 transitions. [2022-11-18 20:48:53,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:48:53,071 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 20:48:53,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:53,101 INFO L225 Difference]: With dead ends: 1073 [2022-11-18 20:48:53,101 INFO L226 Difference]: Without dead ends: 608 [2022-11-18 20:48:53,122 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:48:53,131 INFO L413 NwaCegarLoop]: 423 mSDtfsCounter, 866 mSDsluCounter, 2045 mSDsCounter, 0 mSdLazyCounter, 1507 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 871 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 1634 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 1507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:53,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [871 Valid, 2468 Invalid, 1634 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [127 Valid, 1507 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-18 20:48:53,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 608 states. [2022-11-18 20:48:53,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 608 to 569. [2022-11-18 20:48:53,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 569 states, 494 states have (on average 1.5263157894736843) internal successors, (754), 500 states have internal predecessors, (754), 51 states have call successors, (51), 21 states have call predecessors, (51), 22 states have return successors, (54), 50 states have call predecessors, (54), 49 states have call successors, (54) [2022-11-18 20:48:53,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 569 states to 569 states and 859 transitions. [2022-11-18 20:48:53,275 INFO L78 Accepts]: Start accepts. Automaton has 569 states and 859 transitions. Word has length 65 [2022-11-18 20:48:53,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:53,276 INFO L495 AbstractCegarLoop]: Abstraction has 569 states and 859 transitions. [2022-11-18 20:48:53,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 5 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:48:53,277 INFO L276 IsEmpty]: Start isEmpty. Operand 569 states and 859 transitions. [2022-11-18 20:48:53,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:48:53,281 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:53,281 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:53,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:48:53,282 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:53,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:53,283 INFO L85 PathProgramCache]: Analyzing trace with hash 49817337, now seen corresponding path program 1 times [2022-11-18 20:48:53,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:53,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365034080] [2022-11-18 20:48:53,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:53,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:53,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:48:53,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:48:53,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:48:53,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:48:53,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:48:53,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:48:53,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:48:53,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:53,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:53,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:53,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365034080] [2022-11-18 20:48:53,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365034080] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:53,590 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:53,590 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:48:53,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146825130] [2022-11-18 20:48:53,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:53,593 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:48:53,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:53,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:48:53,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:48:53,601 INFO L87 Difference]: Start difference. First operand 569 states and 859 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:48:55,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:55,178 INFO L93 Difference]: Finished difference Result 916 states and 1336 transitions. [2022-11-18 20:48:55,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:48:55,179 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 20:48:55,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:55,184 INFO L225 Difference]: With dead ends: 916 [2022-11-18 20:48:55,184 INFO L226 Difference]: Without dead ends: 739 [2022-11-18 20:48:55,185 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=250, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:48:55,187 INFO L413 NwaCegarLoop]: 443 mSDtfsCounter, 1822 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 1604 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1854 SdHoareTripleChecker+Valid, 1985 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1604 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:55,187 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1854 Valid, 1985 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1604 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:48:55,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2022-11-18 20:48:55,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 665. [2022-11-18 20:48:55,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 665 states, 570 states have (on average 1.5052631578947369) internal successors, (858), 578 states have internal predecessors, (858), 62 states have call successors, (62), 28 states have call predecessors, (62), 31 states have return successors, (73), 62 states have call predecessors, (73), 60 states have call successors, (73) [2022-11-18 20:48:55,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 665 states to 665 states and 993 transitions. [2022-11-18 20:48:55,251 INFO L78 Accepts]: Start accepts. Automaton has 665 states and 993 transitions. Word has length 65 [2022-11-18 20:48:55,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:55,252 INFO L495 AbstractCegarLoop]: Abstraction has 665 states and 993 transitions. [2022-11-18 20:48:55,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:48:55,252 INFO L276 IsEmpty]: Start isEmpty. Operand 665 states and 993 transitions. [2022-11-18 20:48:55,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:48:55,256 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:55,256 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:55,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:48:55,256 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:55,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:55,257 INFO L85 PathProgramCache]: Analyzing trace with hash -1978768773, now seen corresponding path program 1 times [2022-11-18 20:48:55,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:55,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310648160] [2022-11-18 20:48:55,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:55,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:55,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:48:55,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:48:55,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:48:55,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:48:55,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:48:55,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:48:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:48:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:55,596 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:55,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:55,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310648160] [2022-11-18 20:48:55,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310648160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:55,598 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:55,598 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:48:55,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233529587] [2022-11-18 20:48:55,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:55,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:48:55,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:55,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:48:55,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:48:55,601 INFO L87 Difference]: Start difference. First operand 665 states and 993 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:48:57,196 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:57,197 INFO L93 Difference]: Finished difference Result 966 states and 1407 transitions. [2022-11-18 20:48:57,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:48:57,198 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 20:48:57,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:57,203 INFO L225 Difference]: With dead ends: 966 [2022-11-18 20:48:57,203 INFO L226 Difference]: Without dead ends: 699 [2022-11-18 20:48:57,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:48:57,212 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 975 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1941 mSolverCounterSat, 134 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 976 SdHoareTripleChecker+Valid, 2520 SdHoareTripleChecker+Invalid, 2075 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 134 IncrementalHoareTripleChecker+Valid, 1941 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:57,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [976 Valid, 2520 Invalid, 2075 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [134 Valid, 1941 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-18 20:48:57,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-11-18 20:48:57,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 670. [2022-11-18 20:48:57,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 670 states, 574 states have (on average 1.4982578397212543) internal successors, (860), 582 states have internal predecessors, (860), 62 states have call successors, (62), 28 states have call predecessors, (62), 32 states have return successors, (74), 63 states have call predecessors, (74), 60 states have call successors, (74) [2022-11-18 20:48:57,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 670 states to 670 states and 996 transitions. [2022-11-18 20:48:57,286 INFO L78 Accepts]: Start accepts. Automaton has 670 states and 996 transitions. Word has length 65 [2022-11-18 20:48:57,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:48:57,286 INFO L495 AbstractCegarLoop]: Abstraction has 670 states and 996 transitions. [2022-11-18 20:48:57,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:48:57,287 INFO L276 IsEmpty]: Start isEmpty. Operand 670 states and 996 transitions. [2022-11-18 20:48:57,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:48:57,293 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:48:57,294 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:48:57,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 20:48:57,294 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:48:57,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:48:57,295 INFO L85 PathProgramCache]: Analyzing trace with hash 1286839225, now seen corresponding path program 1 times [2022-11-18 20:48:57,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:48:57,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1432299986] [2022-11-18 20:48:57,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:48:57,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:48:57,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:48:57,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:48:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:48:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:48:57,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:48:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:48:57,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:48:57,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:48:57,505 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:48:57,505 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:48:57,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1432299986] [2022-11-18 20:48:57,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1432299986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:48:57,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:48:57,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-18 20:48:57,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [928695804] [2022-11-18 20:48:57,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:48:57,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:48:57,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:48:57,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:48:57,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:48:57,510 INFO L87 Difference]: Start difference. First operand 670 states and 996 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:48:59,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:48:59,931 INFO L93 Difference]: Finished difference Result 1992 states and 2792 transitions. [2022-11-18 20:48:59,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-18 20:48:59,932 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2022-11-18 20:48:59,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:48:59,943 INFO L225 Difference]: With dead ends: 1992 [2022-11-18 20:48:59,944 INFO L226 Difference]: Without dead ends: 1702 [2022-11-18 20:48:59,946 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-18 20:48:59,952 INFO L413 NwaCegarLoop]: 466 mSDtfsCounter, 4087 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 655 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4101 SdHoareTripleChecker+Valid, 2226 SdHoareTripleChecker+Invalid, 2582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 655 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:48:59,953 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4101 Valid, 2226 Invalid, 2582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [655 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-18 20:48:59,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1702 states. [2022-11-18 20:49:00,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1702 to 1571. [2022-11-18 20:49:00,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1571 states, 1289 states have (on average 1.395655546935609) internal successors, (1799), 1312 states have internal predecessors, (1799), 150 states have call successors, (150), 111 states have call predecessors, (150), 130 states have return successors, (188), 150 states have call predecessors, (188), 148 states have call successors, (188) [2022-11-18 20:49:00,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1571 states to 1571 states and 2137 transitions. [2022-11-18 20:49:00,086 INFO L78 Accepts]: Start accepts. Automaton has 1571 states and 2137 transitions. Word has length 65 [2022-11-18 20:49:00,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:00,086 INFO L495 AbstractCegarLoop]: Abstraction has 1571 states and 2137 transitions. [2022-11-18 20:49:00,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-18 20:49:00,087 INFO L276 IsEmpty]: Start isEmpty. Operand 1571 states and 2137 transitions. [2022-11-18 20:49:00,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:49:00,088 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:00,088 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:00,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:49:00,089 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:00,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:00,089 INFO L85 PathProgramCache]: Analyzing trace with hash 880048655, now seen corresponding path program 1 times [2022-11-18 20:49:00,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:00,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433566458] [2022-11-18 20:49:00,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:00,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:00,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:00,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:00,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:00,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:00,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:00,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:00,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:00,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:00,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433566458] [2022-11-18 20:49:00,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433566458] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:00,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:00,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:49:00,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [460684383] [2022-11-18 20:49:00,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:00,282 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:49:00,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:00,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:49:00,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:49:00,284 INFO L87 Difference]: Start difference. First operand 1571 states and 2137 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:49:01,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:01,996 INFO L93 Difference]: Finished difference Result 2862 states and 3810 transitions. [2022-11-18 20:49:01,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:49:01,997 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-11-18 20:49:01,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:02,006 INFO L225 Difference]: With dead ends: 2862 [2022-11-18 20:49:02,006 INFO L226 Difference]: Without dead ends: 1677 [2022-11-18 20:49:02,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:49:02,010 INFO L413 NwaCegarLoop]: 404 mSDtfsCounter, 979 mSDsluCounter, 2113 mSDsCounter, 0 mSdLazyCounter, 1915 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 981 SdHoareTripleChecker+Valid, 2517 SdHoareTripleChecker+Invalid, 2050 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 1915 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:02,011 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [981 Valid, 2517 Invalid, 2050 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 1915 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:49:02,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1677 states. [2022-11-18 20:49:02,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1677 to 1601. [2022-11-18 20:49:02,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1601 states, 1313 states have (on average 1.3823305407463824) internal successors, (1815), 1336 states have internal predecessors, (1815), 150 states have call successors, (150), 111 states have call predecessors, (150), 136 states have return successors, (194), 156 states have call predecessors, (194), 148 states have call successors, (194) [2022-11-18 20:49:02,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1601 states to 1601 states and 2159 transitions. [2022-11-18 20:49:02,144 INFO L78 Accepts]: Start accepts. Automaton has 1601 states and 2159 transitions. Word has length 65 [2022-11-18 20:49:02,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:02,144 INFO L495 AbstractCegarLoop]: Abstraction has 1601 states and 2159 transitions. [2022-11-18 20:49:02,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:49:02,145 INFO L276 IsEmpty]: Start isEmpty. Operand 1601 states and 2159 transitions. [2022-11-18 20:49:02,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:49:02,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:02,146 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:02,147 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:49:02,147 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:02,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:02,148 INFO L85 PathProgramCache]: Analyzing trace with hash -2028715247, now seen corresponding path program 1 times [2022-11-18 20:49:02,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:02,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1050721033] [2022-11-18 20:49:02,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:02,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:02,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:02,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:02,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:02,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:02,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:02,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:02,378 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:02,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:02,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1050721033] [2022-11-18 20:49:02,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1050721033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:02,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:02,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:49:02,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517107914] [2022-11-18 20:49:02,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:02,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:49:02,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:02,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:49:02,382 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:49:02,382 INFO L87 Difference]: Start difference. First operand 1601 states and 2159 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:49:03,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:03,921 INFO L93 Difference]: Finished difference Result 2856 states and 3706 transitions. [2022-11-18 20:49:03,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-18 20:49:03,922 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 20:49:03,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:03,930 INFO L225 Difference]: With dead ends: 2856 [2022-11-18 20:49:03,930 INFO L226 Difference]: Without dead ends: 1864 [2022-11-18 20:49:03,933 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2022-11-18 20:49:03,935 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1783 mSDsluCounter, 1381 mSDsCounter, 0 mSdLazyCounter, 1530 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1812 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 1530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:03,935 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1812 Valid, 1767 Invalid, 1725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 1530 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:49:03,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1864 states. [2022-11-18 20:49:04,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1864 to 1543. [2022-11-18 20:49:04,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1543 states, 1271 states have (on average 1.3800157356412275) internal successors, (1754), 1289 states have internal predecessors, (1754), 144 states have call successors, (144), 106 states have call predecessors, (144), 126 states have return successors, (179), 149 states have call predecessors, (179), 142 states have call successors, (179) [2022-11-18 20:49:04,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1543 states to 1543 states and 2077 transitions. [2022-11-18 20:49:04,051 INFO L78 Accepts]: Start accepts. Automaton has 1543 states and 2077 transitions. Word has length 65 [2022-11-18 20:49:04,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:04,052 INFO L495 AbstractCegarLoop]: Abstraction has 1543 states and 2077 transitions. [2022-11-18 20:49:04,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:49:04,052 INFO L276 IsEmpty]: Start isEmpty. Operand 1543 states and 2077 transitions. [2022-11-18 20:49:04,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-18 20:49:04,053 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:04,053 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:04,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 20:49:04,054 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:04,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:04,054 INFO L85 PathProgramCache]: Analyzing trace with hash 2132238543, now seen corresponding path program 1 times [2022-11-18 20:49:04,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:04,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [47338150] [2022-11-18 20:49:04,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:04,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:04,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:04,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:04,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:04,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:04,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:04,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:04,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:04,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:04,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [47338150] [2022-11-18 20:49:04,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [47338150] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:04,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:04,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:04,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117228466] [2022-11-18 20:49:04,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:04,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:04,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:04,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:04,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:04,168 INFO L87 Difference]: Start difference. First operand 1543 states and 2077 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:49:05,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:05,292 INFO L93 Difference]: Finished difference Result 3882 states and 5038 transitions. [2022-11-18 20:49:05,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-18 20:49:05,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-18 20:49:05,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:05,305 INFO L225 Difference]: With dead ends: 3882 [2022-11-18 20:49:05,306 INFO L226 Difference]: Without dead ends: 2726 [2022-11-18 20:49:05,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:49:05,312 INFO L413 NwaCegarLoop]: 382 mSDtfsCounter, 1406 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 135 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1439 SdHoareTripleChecker+Valid, 1741 SdHoareTripleChecker+Invalid, 848 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 135 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:05,313 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1439 Valid, 1741 Invalid, 848 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [135 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:49:05,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2726 states. [2022-11-18 20:49:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2726 to 2606. [2022-11-18 20:49:05,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2606 states, 2091 states have (on average 1.31324725011956) internal successors, (2746), 2126 states have internal predecessors, (2746), 263 states have call successors, (263), 205 states have call predecessors, (263), 250 states have return successors, (370), 277 states have call predecessors, (370), 261 states have call successors, (370) [2022-11-18 20:49:05,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2606 states to 2606 states and 3379 transitions. [2022-11-18 20:49:05,519 INFO L78 Accepts]: Start accepts. Automaton has 2606 states and 3379 transitions. Word has length 65 [2022-11-18 20:49:05,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:05,520 INFO L495 AbstractCegarLoop]: Abstraction has 2606 states and 3379 transitions. [2022-11-18 20:49:05,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-18 20:49:05,520 INFO L276 IsEmpty]: Start isEmpty. Operand 2606 states and 3379 transitions. [2022-11-18 20:49:05,527 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-18 20:49:05,527 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:05,527 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:05,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 20:49:05,528 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:05,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:05,528 INFO L85 PathProgramCache]: Analyzing trace with hash -1937549811, now seen corresponding path program 1 times [2022-11-18 20:49:05,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:05,529 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726909500] [2022-11-18 20:49:05,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:05,529 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:05,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:05,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:05,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:05,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:05,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:05,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:05,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:05,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:05,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726909500] [2022-11-18 20:49:05,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726909500] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:05,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:05,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:49:05,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [489392232] [2022-11-18 20:49:05,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:05,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:49:05,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:05,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:49:05,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:49:05,623 INFO L87 Difference]: Start difference. First operand 2606 states and 3379 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:49:06,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:06,806 INFO L93 Difference]: Finished difference Result 5922 states and 7524 transitions. [2022-11-18 20:49:06,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:49:06,807 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-18 20:49:06,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:06,833 INFO L225 Difference]: With dead ends: 5922 [2022-11-18 20:49:06,833 INFO L226 Difference]: Without dead ends: 3708 [2022-11-18 20:49:06,839 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:49:06,840 INFO L413 NwaCegarLoop]: 411 mSDtfsCounter, 835 mSDsluCounter, 1315 mSDsCounter, 0 mSdLazyCounter, 903 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 1025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 903 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:06,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1726 Invalid, 1025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 903 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:49:06,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3708 states. [2022-11-18 20:49:07,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3708 to 3440. [2022-11-18 20:49:07,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3440 states, 2739 states have (on average 1.2928075940124133) internal successors, (3541), 2779 states have internal predecessors, (3541), 355 states have call successors, (355), 285 states have call predecessors, (355), 344 states have return successors, (484), 378 states have call predecessors, (484), 353 states have call successors, (484) [2022-11-18 20:49:07,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3440 states to 3440 states and 4380 transitions. [2022-11-18 20:49:07,204 INFO L78 Accepts]: Start accepts. Automaton has 3440 states and 4380 transitions. Word has length 66 [2022-11-18 20:49:07,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:07,204 INFO L495 AbstractCegarLoop]: Abstraction has 3440 states and 4380 transitions. [2022-11-18 20:49:07,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:49:07,205 INFO L276 IsEmpty]: Start isEmpty. Operand 3440 states and 4380 transitions. [2022-11-18 20:49:07,207 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-18 20:49:07,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:07,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:07,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:49:07,208 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:07,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1977597300, now seen corresponding path program 1 times [2022-11-18 20:49:07,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:07,209 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1456422586] [2022-11-18 20:49:07,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:07,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:07,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:07,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:07,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:07,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:07,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:07,316 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:07,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:07,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1456422586] [2022-11-18 20:49:07,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1456422586] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:07,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:07,318 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:49:07,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [176469727] [2022-11-18 20:49:07,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:07,319 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:49:07,319 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:07,320 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:49:07,320 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:49:07,321 INFO L87 Difference]: Start difference. First operand 3440 states and 4380 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:49:08,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:08,369 INFO L93 Difference]: Finished difference Result 7312 states and 9154 transitions. [2022-11-18 20:49:08,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:49:08,370 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-11-18 20:49:08,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:08,390 INFO L225 Difference]: With dead ends: 7312 [2022-11-18 20:49:08,391 INFO L226 Difference]: Without dead ends: 4262 [2022-11-18 20:49:08,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:49:08,400 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 1727 mSDsluCounter, 716 mSDsCounter, 0 mSdLazyCounter, 560 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1761 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 560 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:08,401 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1761 Valid, 1138 Invalid, 727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 560 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:49:08,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4262 states. [2022-11-18 20:49:08,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4262 to 3994. [2022-11-18 20:49:08,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3994 states, 3179 states have (on average 1.2837370242214532) internal successors, (4081), 3223 states have internal predecessors, (4081), 411 states have call successors, (411), 335 states have call predecessors, (411), 402 states have return successors, (557), 438 states have call predecessors, (557), 409 states have call successors, (557) [2022-11-18 20:49:08,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3994 states to 3994 states and 5049 transitions. [2022-11-18 20:49:08,743 INFO L78 Accepts]: Start accepts. Automaton has 3994 states and 5049 transitions. Word has length 72 [2022-11-18 20:49:08,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:08,744 INFO L495 AbstractCegarLoop]: Abstraction has 3994 states and 5049 transitions. [2022-11-18 20:49:08,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-18 20:49:08,745 INFO L276 IsEmpty]: Start isEmpty. Operand 3994 states and 5049 transitions. [2022-11-18 20:49:08,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-18 20:49:08,747 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:08,747 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:08,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-18 20:49:08,747 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:08,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:08,748 INFO L85 PathProgramCache]: Analyzing trace with hash -1692903955, now seen corresponding path program 1 times [2022-11-18 20:49:08,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:08,748 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [918993376] [2022-11-18 20:49:08,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:08,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:08,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:08,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:08,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:08,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:08,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:08,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:08,857 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:08,858 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:08,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [918993376] [2022-11-18 20:49:08,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [918993376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:08,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:08,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:08,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638587398] [2022-11-18 20:49:08,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:08,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:08,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:08,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:08,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:08,860 INFO L87 Difference]: Start difference. First operand 3994 states and 5049 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:49:10,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:10,172 INFO L93 Difference]: Finished difference Result 5080 states and 6344 transitions. [2022-11-18 20:49:10,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:49:10,173 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2022-11-18 20:49:10,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:10,197 INFO L225 Difference]: With dead ends: 5080 [2022-11-18 20:49:10,197 INFO L226 Difference]: Without dead ends: 5077 [2022-11-18 20:49:10,200 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2022-11-18 20:49:10,200 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 2068 mSDsluCounter, 1033 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2078 SdHoareTripleChecker+Valid, 1448 SdHoareTripleChecker+Invalid, 933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:10,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2078 Valid, 1448 Invalid, 933 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:49:10,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5077 states. [2022-11-18 20:49:10,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5077 to 4456. [2022-11-18 20:49:10,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4456 states, 3534 states have (on average 1.272495755517827) internal successors, (4497), 3581 states have internal predecessors, (4497), 461 states have call successors, (461), 379 states have call predecessors, (461), 459 states have return successors, (634), 498 states have call predecessors, (634), 460 states have call successors, (634) [2022-11-18 20:49:10,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4456 states to 4456 states and 5592 transitions. [2022-11-18 20:49:10,672 INFO L78 Accepts]: Start accepts. Automaton has 4456 states and 5592 transitions. Word has length 73 [2022-11-18 20:49:10,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:10,672 INFO L495 AbstractCegarLoop]: Abstraction has 4456 states and 5592 transitions. [2022-11-18 20:49:10,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:49:10,673 INFO L276 IsEmpty]: Start isEmpty. Operand 4456 states and 5592 transitions. [2022-11-18 20:49:10,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-18 20:49:10,675 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:10,675 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:10,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-18 20:49:10,675 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:10,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:10,677 INFO L85 PathProgramCache]: Analyzing trace with hash -941848842, now seen corresponding path program 1 times [2022-11-18 20:49:10,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:10,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251027738] [2022-11-18 20:49:10,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:10,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:10,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:10,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:10,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:10,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:10,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:10,877 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:10,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:10,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251027738] [2022-11-18 20:49:10,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251027738] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:10,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1462510805] [2022-11-18 20:49:10,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:10,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:10,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:10,886 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:10,895 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:49:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:11,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 405 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-18 20:49:11,056 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:11,507 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:11,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:49:11,700 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:11,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1462510805] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:49:11,701 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:49:11,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2022-11-18 20:49:11,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695359886] [2022-11-18 20:49:11,702 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:49:11,703 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-18 20:49:11,703 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:11,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-18 20:49:11,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:49:11,704 INFO L87 Difference]: Start difference. First operand 4456 states and 5592 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 20:49:14,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:14,634 INFO L93 Difference]: Finished difference Result 8774 states and 10801 transitions. [2022-11-18 20:49:14,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-18 20:49:14,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2022-11-18 20:49:14,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:14,670 INFO L225 Difference]: With dead ends: 8774 [2022-11-18 20:49:14,670 INFO L226 Difference]: Without dead ends: 8771 [2022-11-18 20:49:14,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 201 GetRequests, 173 SyntacticMatches, 2 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=593, Unknown=0, NotChecked=0, Total=756 [2022-11-18 20:49:14,675 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 2949 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 1862 mSolverCounterSat, 355 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3013 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 2217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 355 IncrementalHoareTripleChecker+Valid, 1862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:14,675 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3013 Valid, 2077 Invalid, 2217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [355 Valid, 1862 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-18 20:49:14,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8771 states. [2022-11-18 20:49:15,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8771 to 7873. [2022-11-18 20:49:15,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7873 states, 6209 states have (on average 1.2530198099532937) internal successors, (7780), 6291 states have internal predecessors, (7780), 820 states have call successors, (820), 693 states have call predecessors, (820), 842 states have return successors, (1135), 891 states have call predecessors, (1135), 819 states have call successors, (1135) [2022-11-18 20:49:15,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7873 states to 7873 states and 9735 transitions. [2022-11-18 20:49:15,594 INFO L78 Accepts]: Start accepts. Automaton has 7873 states and 9735 transitions. Word has length 74 [2022-11-18 20:49:15,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:15,595 INFO L495 AbstractCegarLoop]: Abstraction has 7873 states and 9735 transitions. [2022-11-18 20:49:15,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2022-11-18 20:49:15,595 INFO L276 IsEmpty]: Start isEmpty. Operand 7873 states and 9735 transitions. [2022-11-18 20:49:15,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-18 20:49:15,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:15,597 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:15,609 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:15,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-18 20:49:15,804 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:15,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:15,804 INFO L85 PathProgramCache]: Analyzing trace with hash -1219556691, now seen corresponding path program 2 times [2022-11-18 20:49:15,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:15,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903605988] [2022-11-18 20:49:15,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:15,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:15,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:15,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:15,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:15,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:15,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:15,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:15,880 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:15,880 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:15,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903605988] [2022-11-18 20:49:15,880 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903605988] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:15,881 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:15,881 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:49:15,881 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375655342] [2022-11-18 20:49:15,881 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:15,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:49:15,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:15,882 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:49:15,882 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:49:15,882 INFO L87 Difference]: Start difference. First operand 7873 states and 9735 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:49:17,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:17,074 INFO L93 Difference]: Finished difference Result 10467 states and 12944 transitions. [2022-11-18 20:49:17,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:49:17,075 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2022-11-18 20:49:17,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:17,094 INFO L225 Difference]: With dead ends: 10467 [2022-11-18 20:49:17,095 INFO L226 Difference]: Without dead ends: 4293 [2022-11-18 20:49:17,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:49:17,109 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1636 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 581 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1672 SdHoareTripleChecker+Valid, 1172 SdHoareTripleChecker+Invalid, 726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 581 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:17,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1672 Valid, 1172 Invalid, 726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 581 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-18 20:49:17,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4293 states. [2022-11-18 20:49:17,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4293 to 3285. [2022-11-18 20:49:17,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3285 states, 2627 states have (on average 1.2679862961553103) internal successors, (3331), 2655 states have internal predecessors, (3331), 339 states have call successors, (339), 275 states have call predecessors, (339), 317 states have return successors, (434), 357 states have call predecessors, (434), 338 states have call successors, (434) [2022-11-18 20:49:17,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3285 states to 3285 states and 4104 transitions. [2022-11-18 20:49:17,502 INFO L78 Accepts]: Start accepts. Automaton has 3285 states and 4104 transitions. Word has length 77 [2022-11-18 20:49:17,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:17,502 INFO L495 AbstractCegarLoop]: Abstraction has 3285 states and 4104 transitions. [2022-11-18 20:49:17,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2022-11-18 20:49:17,503 INFO L276 IsEmpty]: Start isEmpty. Operand 3285 states and 4104 transitions. [2022-11-18 20:49:17,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-18 20:49:17,504 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:17,504 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:17,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 20:49:17,505 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:17,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:17,505 INFO L85 PathProgramCache]: Analyzing trace with hash 167337032, now seen corresponding path program 1 times [2022-11-18 20:49:17,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:17,506 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459614560] [2022-11-18 20:49:17,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:17,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:17,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:17,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:17,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:17,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:17,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:17,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:49:17,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:17,638 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:49:17,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:17,638 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459614560] [2022-11-18 20:49:17,638 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459614560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:17,638 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:17,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-18 20:49:17,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423866011] [2022-11-18 20:49:17,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:17,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-18 20:49:17,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:17,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-18 20:49:17,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-18 20:49:17,640 INFO L87 Difference]: Start difference. First operand 3285 states and 4104 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:49:19,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:19,519 INFO L93 Difference]: Finished difference Result 9069 states and 11101 transitions. [2022-11-18 20:49:19,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-18 20:49:19,520 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2022-11-18 20:49:19,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:19,540 INFO L225 Difference]: With dead ends: 9069 [2022-11-18 20:49:19,540 INFO L226 Difference]: Without dead ends: 5371 [2022-11-18 20:49:19,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 93 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2022-11-18 20:49:19,551 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1510 mSDsluCounter, 1413 mSDsCounter, 0 mSdLazyCounter, 1390 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1522 SdHoareTripleChecker+Valid, 1849 SdHoareTripleChecker+Invalid, 1657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 1390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:19,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1522 Valid, 1849 Invalid, 1657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 1390 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-18 20:49:19,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5371 states. [2022-11-18 20:49:20,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5371 to 5111. [2022-11-18 20:49:20,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5111 states, 4018 states have (on average 1.2297162767546044) internal successors, (4941), 4083 states have internal predecessors, (4941), 539 states have call successors, (539), 447 states have call predecessors, (539), 552 states have return successors, (784), 583 states have call predecessors, (784), 538 states have call successors, (784) [2022-11-18 20:49:20,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5111 states to 5111 states and 6264 transitions. [2022-11-18 20:49:20,217 INFO L78 Accepts]: Start accepts. Automaton has 5111 states and 6264 transitions. Word has length 84 [2022-11-18 20:49:20,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:20,217 INFO L495 AbstractCegarLoop]: Abstraction has 5111 states and 6264 transitions. [2022-11-18 20:49:20,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:49:20,218 INFO L276 IsEmpty]: Start isEmpty. Operand 5111 states and 6264 transitions. [2022-11-18 20:49:20,220 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-18 20:49:20,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:20,221 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:20,221 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 20:49:20,221 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:20,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:20,222 INFO L85 PathProgramCache]: Analyzing trace with hash -332961557, now seen corresponding path program 1 times [2022-11-18 20:49:20,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:20,222 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1134400885] [2022-11-18 20:49:20,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:20,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:20,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:20,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:20,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:20,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:20,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:20,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:20,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-11-18 20:49:20,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:20,396 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-18 20:49:20,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:20,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1134400885] [2022-11-18 20:49:20,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1134400885] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:20,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:20,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-18 20:49:20,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336675674] [2022-11-18 20:49:20,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:20,399 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-18 20:49:20,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:20,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-18 20:49:20,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:49:20,400 INFO L87 Difference]: Start difference. First operand 5111 states and 6264 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:49:22,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:22,646 INFO L93 Difference]: Finished difference Result 8471 states and 10282 transitions. [2022-11-18 20:49:22,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-11-18 20:49:22,647 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2022-11-18 20:49:22,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:22,661 INFO L225 Difference]: With dead ends: 8471 [2022-11-18 20:49:22,661 INFO L226 Difference]: Without dead ends: 4272 [2022-11-18 20:49:22,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2022-11-18 20:49:22,670 INFO L413 NwaCegarLoop]: 407 mSDtfsCounter, 2392 mSDsluCounter, 1791 mSDsCounter, 0 mSdLazyCounter, 1703 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2431 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 2069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 1703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:22,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2431 Valid, 2198 Invalid, 2069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 1703 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-18 20:49:22,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4272 states. [2022-11-18 20:49:23,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4272 to 3851. [2022-11-18 20:49:23,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3851 states, 3024 states have (on average 1.2218915343915344) internal successors, (3695), 3077 states have internal predecessors, (3695), 404 states have call successors, (404), 329 states have call predecessors, (404), 421 states have return successors, (553), 447 states have call predecessors, (553), 403 states have call successors, (553) [2022-11-18 20:49:23,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3851 states to 3851 states and 4652 transitions. [2022-11-18 20:49:23,061 INFO L78 Accepts]: Start accepts. Automaton has 3851 states and 4652 transitions. Word has length 93 [2022-11-18 20:49:23,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:23,062 INFO L495 AbstractCegarLoop]: Abstraction has 3851 states and 4652 transitions. [2022-11-18 20:49:23,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-11-18 20:49:23,062 INFO L276 IsEmpty]: Start isEmpty. Operand 3851 states and 4652 transitions. [2022-11-18 20:49:23,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-11-18 20:49:23,066 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:23,066 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:23,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 20:49:23,067 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:23,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:23,068 INFO L85 PathProgramCache]: Analyzing trace with hash 1881468012, now seen corresponding path program 1 times [2022-11-18 20:49:23,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:23,069 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422405800] [2022-11-18 20:49:23,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:23,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:23,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:23,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:23,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:23,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:23,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:49:23,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-11-18 20:49:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-11-18 20:49:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-11-18 20:49:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:23,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-11-18 20:49:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-11-18 20:49:23,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-11-18 20:49:23,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,306 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-11-18 20:49:23,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:23,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422405800] [2022-11-18 20:49:23,306 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422405800] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:23,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [981998879] [2022-11-18 20:49:23,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:23,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:23,307 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:23,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:23,339 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:49:23,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:23,477 INFO L263 TraceCheckSpWp]: Trace formula consists of 583 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-18 20:49:23,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:23,517 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-18 20:49:23,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:49:23,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [981998879] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:23,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:49:23,518 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2022-11-18 20:49:23,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78624552] [2022-11-18 20:49:23,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:23,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:49:23,519 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:23,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:49:23,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:49:23,520 INFO L87 Difference]: Start difference. First operand 3851 states and 4652 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:49:23,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:23,856 INFO L93 Difference]: Finished difference Result 5726 states and 6891 transitions. [2022-11-18 20:49:23,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:49:23,857 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2022-11-18 20:49:23,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:23,864 INFO L225 Difference]: With dead ends: 5726 [2022-11-18 20:49:23,865 INFO L226 Difference]: Without dead ends: 2267 [2022-11-18 20:49:23,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:49:23,874 INFO L413 NwaCegarLoop]: 724 mSDtfsCounter, 34 mSDsluCounter, 2856 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3580 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:23,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 3580 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-18 20:49:23,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2267 states. [2022-11-18 20:49:24,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2267 to 2145. [2022-11-18 20:49:24,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2145 states, 1764 states have (on average 1.25) internal successors, (2205), 1780 states have internal predecessors, (2205), 193 states have call successors, (193), 143 states have call predecessors, (193), 186 states have return successors, (260), 222 states have call predecessors, (260), 192 states have call successors, (260) [2022-11-18 20:49:24,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2145 states to 2145 states and 2658 transitions. [2022-11-18 20:49:24,095 INFO L78 Accepts]: Start accepts. Automaton has 2145 states and 2658 transitions. Word has length 145 [2022-11-18 20:49:24,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:24,096 INFO L495 AbstractCegarLoop]: Abstraction has 2145 states and 2658 transitions. [2022-11-18 20:49:24,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-18 20:49:24,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2145 states and 2658 transitions. [2022-11-18 20:49:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-11-18 20:49:24,100 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:24,101 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:24,115 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:24,306 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:49:24,307 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:24,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:24,307 INFO L85 PathProgramCache]: Analyzing trace with hash 2075067146, now seen corresponding path program 1 times [2022-11-18 20:49:24,307 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:24,307 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [562585160] [2022-11-18 20:49:24,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:24,308 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:24,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:24,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:24,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:24,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-11-18 20:49:24,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-11-18 20:49:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-11-18 20:49:24,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-11-18 20:49:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-11-18 20:49:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-11-18 20:49:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-11-18 20:49:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:24,428 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-11-18 20:49:24,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:24,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [562585160] [2022-11-18 20:49:24,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [562585160] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:24,429 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:24,429 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:49:24,429 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124814896] [2022-11-18 20:49:24,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:24,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:49:24,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:24,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:49:24,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:49:24,431 INFO L87 Difference]: Start difference. First operand 2145 states and 2658 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 20:49:25,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:25,365 INFO L93 Difference]: Finished difference Result 2193 states and 2708 transitions. [2022-11-18 20:49:25,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:49:25,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2022-11-18 20:49:25,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:25,370 INFO L225 Difference]: With dead ends: 2193 [2022-11-18 20:49:25,371 INFO L226 Difference]: Without dead ends: 1819 [2022-11-18 20:49:25,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-11-18 20:49:25,373 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 755 mSDsluCounter, 1262 mSDsCounter, 0 mSdLazyCounter, 790 mSolverCounterSat, 93 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 93 IncrementalHoareTripleChecker+Valid, 790 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:25,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1660 Invalid, 883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [93 Valid, 790 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-18 20:49:25,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1819 states. [2022-11-18 20:49:25,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1819 to 1774. [2022-11-18 20:49:25,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1774 states, 1477 states have (on average 1.2721733243060258) internal successors, (1879), 1490 states have internal predecessors, (1879), 152 states have call successors, (152), 108 states have call predecessors, (152), 143 states have return successors, (205), 176 states have call predecessors, (205), 151 states have call successors, (205) [2022-11-18 20:49:25,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1774 states to 1774 states and 2236 transitions. [2022-11-18 20:49:25,548 INFO L78 Accepts]: Start accepts. Automaton has 1774 states and 2236 transitions. Word has length 147 [2022-11-18 20:49:25,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:25,548 INFO L495 AbstractCegarLoop]: Abstraction has 1774 states and 2236 transitions. [2022-11-18 20:49:25,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-18 20:49:25,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1774 states and 2236 transitions. [2022-11-18 20:49:25,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-11-18 20:49:25,552 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:25,552 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:25,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 20:49:25,553 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:25,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:25,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1656557558, now seen corresponding path program 1 times [2022-11-18 20:49:25,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:25,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1511850171] [2022-11-18 20:49:25,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:25,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:25,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:25,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:25,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:49:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:49:25,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-11-18 20:49:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-11-18 20:49:25,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:25,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:25,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-11-18 20:49:25,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-11-18 20:49:25,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-11-18 20:49:25,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-11-18 20:49:25,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:25,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1511850171] [2022-11-18 20:49:25,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1511850171] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:25,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:25,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:25,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371059399] [2022-11-18 20:49:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:25,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:25,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:25,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:25,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:25,697 INFO L87 Difference]: Start difference. First operand 1774 states and 2236 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:49:26,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:26,966 INFO L93 Difference]: Finished difference Result 3040 states and 3735 transitions. [2022-11-18 20:49:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-18 20:49:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2022-11-18 20:49:26,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:26,972 INFO L225 Difference]: With dead ends: 3040 [2022-11-18 20:49:26,973 INFO L226 Difference]: Without dead ends: 1747 [2022-11-18 20:49:26,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:49:26,977 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 682 mSDsluCounter, 1730 mSDsCounter, 0 mSdLazyCounter, 1289 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 683 SdHoareTripleChecker+Valid, 2156 SdHoareTripleChecker+Invalid, 1377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:26,977 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [683 Valid, 2156 Invalid, 1377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1289 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-18 20:49:26,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1747 states. [2022-11-18 20:49:27,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1747 to 1663. [2022-11-18 20:49:27,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1663 states, 1390 states have (on average 1.2820143884892086) internal successors, (1782), 1403 states have internal predecessors, (1782), 140 states have call successors, (140), 98 states have call predecessors, (140), 131 states have return successors, (187), 162 states have call predecessors, (187), 139 states have call successors, (187) [2022-11-18 20:49:27,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1663 states to 1663 states and 2109 transitions. [2022-11-18 20:49:27,121 INFO L78 Accepts]: Start accepts. Automaton has 1663 states and 2109 transitions. Word has length 159 [2022-11-18 20:49:27,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:27,122 INFO L495 AbstractCegarLoop]: Abstraction has 1663 states and 2109 transitions. [2022-11-18 20:49:27,122 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-11-18 20:49:27,122 INFO L276 IsEmpty]: Start isEmpty. Operand 1663 states and 2109 transitions. [2022-11-18 20:49:27,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-11-18 20:49:27,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:27,126 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:27,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-18 20:49:27,126 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:27,127 INFO L85 PathProgramCache]: Analyzing trace with hash -619024488, now seen corresponding path program 1 times [2022-11-18 20:49:27,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:27,127 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642190211] [2022-11-18 20:49:27,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:27,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:27,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-18 20:49:27,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-18 20:49:27,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:27,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:27,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-18 20:49:27,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-18 20:49:27,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-18 20:49:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-18 20:49:27,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-11-18 20:49:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-11-18 20:49:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-18 20:49:27,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-18 20:49:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-11-18 20:49:27,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-11-18 20:49:27,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-11-18 20:49:27,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-11-18 20:49:27,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:27,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642190211] [2022-11-18 20:49:27,399 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642190211] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:49:27,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1856914953] [2022-11-18 20:49:27,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:27,399 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:49:27,399 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:49:27,400 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:49:27,430 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:49:27,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:27,588 INFO L263 TraceCheckSpWp]: Trace formula consists of 651 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-18 20:49:27,592 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:49:27,806 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-11-18 20:49:27,807 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:49:28,188 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 4 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-11-18 20:49:28,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1856914953] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:49:28,189 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:49:28,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2022-11-18 20:49:28,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1616137485] [2022-11-18 20:49:28,190 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:49:28,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-18 20:49:28,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:28,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-18 20:49:28,192 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-11-18 20:49:28,192 INFO L87 Difference]: Start difference. First operand 1663 states and 2109 transitions. Second operand has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-18 20:49:30,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:30,358 INFO L93 Difference]: Finished difference Result 3399 states and 4248 transitions. [2022-11-18 20:49:30,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:49:30,359 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) Word has length 162 [2022-11-18 20:49:30,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:30,366 INFO L225 Difference]: With dead ends: 3399 [2022-11-18 20:49:30,366 INFO L226 Difference]: Without dead ends: 2054 [2022-11-18 20:49:30,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 386 GetRequests, 353 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=232, Invalid=638, Unknown=0, NotChecked=0, Total=870 [2022-11-18 20:49:30,370 INFO L413 NwaCegarLoop]: 366 mSDtfsCounter, 2261 mSDsluCounter, 2073 mSDsCounter, 0 mSdLazyCounter, 2054 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2293 SdHoareTripleChecker+Valid, 2439 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 2054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:30,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2293 Valid, 2439 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 2054 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-18 20:49:30,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2054 states. [2022-11-18 20:49:30,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2054 to 1941. [2022-11-18 20:49:30,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1593 states have (on average 1.2460765850596358) internal successors, (1985), 1607 states have internal predecessors, (1985), 180 states have call successors, (180), 136 states have call predecessors, (180), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-11-18 20:49:30,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2421 transitions. [2022-11-18 20:49:30,596 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2421 transitions. Word has length 162 [2022-11-18 20:49:30,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:30,596 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2421 transitions. [2022-11-18 20:49:30,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 17.571428571428573) internal successors, (246), 12 states have internal predecessors, (246), 6 states have call successors, (38), 8 states have call predecessors, (38), 10 states have return successors, (35), 6 states have call predecessors, (35), 6 states have call successors, (35) [2022-11-18 20:49:30,597 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2421 transitions. [2022-11-18 20:49:30,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:49:30,601 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:30,601 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:30,619 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:49:30,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1e63e6db-dcbf-4c7a-a631-8bbe9c240832/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-11-18 20:49:30,814 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:30,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:30,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1512428841, now seen corresponding path program 1 times [2022-11-18 20:49:30,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:30,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203146017] [2022-11-18 20:49:30,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:30,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:30,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:30,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:30,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:30,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:49:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:49:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:31,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:49:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:31,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:31,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:31,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203146017] [2022-11-18 20:49:31,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203146017] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:31,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:31,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:49:31,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168052051] [2022-11-18 20:49:31,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:31,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:49:31,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:31,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:49:31,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:31,010 INFO L87 Difference]: Start difference. First operand 1941 states and 2421 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:33,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:33,797 INFO L93 Difference]: Finished difference Result 2451 states and 3247 transitions. [2022-11-18 20:49:33,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:49:33,798 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:49:33,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:33,804 INFO L225 Difference]: With dead ends: 2451 [2022-11-18 20:49:33,804 INFO L226 Difference]: Without dead ends: 2083 [2022-11-18 20:49:33,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:49:33,807 INFO L413 NwaCegarLoop]: 416 mSDtfsCounter, 1133 mSDsluCounter, 556 mSDsCounter, 0 mSdLazyCounter, 1176 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1157 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:33,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1157 Valid, 972 Invalid, 1262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1176 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:49:33,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-11-18 20:49:34,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1941. [2022-11-18 20:49:34,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1593 states have (on average 1.2454488386691775) internal successors, (1984), 1607 states have internal predecessors, (1984), 180 states have call successors, (180), 136 states have call predecessors, (180), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-11-18 20:49:34,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2420 transitions. [2022-11-18 20:49:34,232 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2420 transitions. Word has length 178 [2022-11-18 20:49:34,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:34,233 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2420 transitions. [2022-11-18 20:49:34,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:34,233 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2420 transitions. [2022-11-18 20:49:34,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:49:34,236 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:34,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:34,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-18 20:49:34,237 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:34,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:34,237 INFO L85 PathProgramCache]: Analyzing trace with hash -104702891, now seen corresponding path program 1 times [2022-11-18 20:49:34,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:34,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [984089386] [2022-11-18 20:49:34,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:34,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:34,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:34,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:34,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:34,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:34,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:49:34,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:34,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:49:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:49:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:34,416 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:34,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [984089386] [2022-11-18 20:49:34,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [984089386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:34,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:34,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 20:49:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [856319232] [2022-11-18 20:49:34,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:34,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 20:49:34,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:34,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 20:49:34,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-18 20:49:34,419 INFO L87 Difference]: Start difference. First operand 1941 states and 2420 transitions. Second operand has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:37,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:37,171 INFO L93 Difference]: Finished difference Result 2443 states and 3230 transitions. [2022-11-18 20:49:37,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:49:37,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:49:37,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:37,178 INFO L225 Difference]: With dead ends: 2443 [2022-11-18 20:49:37,178 INFO L226 Difference]: Without dead ends: 2083 [2022-11-18 20:49:37,180 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-18 20:49:37,181 INFO L413 NwaCegarLoop]: 415 mSDtfsCounter, 1124 mSDsluCounter, 555 mSDsCounter, 0 mSdLazyCounter, 1175 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 970 SdHoareTripleChecker+Invalid, 1261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:37,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 970 Invalid, 1261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1175 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-18 20:49:37,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2083 states. [2022-11-18 20:49:37,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2083 to 1941. [2022-11-18 20:49:37,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1941 states, 1593 states have (on average 1.2448210922787193) internal successors, (1983), 1607 states have internal predecessors, (1983), 180 states have call successors, (180), 136 states have call predecessors, (180), 166 states have return successors, (256), 198 states have call predecessors, (256), 179 states have call successors, (256) [2022-11-18 20:49:37,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1941 states to 1941 states and 2419 transitions. [2022-11-18 20:49:37,533 INFO L78 Accepts]: Start accepts. Automaton has 1941 states and 2419 transitions. Word has length 178 [2022-11-18 20:49:37,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:37,533 INFO L495 AbstractCegarLoop]: Abstraction has 1941 states and 2419 transitions. [2022-11-18 20:49:37,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 33.6) internal successors, (168), 3 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:37,534 INFO L276 IsEmpty]: Start isEmpty. Operand 1941 states and 2419 transitions. [2022-11-18 20:49:37,536 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:49:37,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:37,537 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:37,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-18 20:49:37,537 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:37,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:37,538 INFO L85 PathProgramCache]: Analyzing trace with hash -772084781, now seen corresponding path program 1 times [2022-11-18 20:49:37,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:37,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515355157] [2022-11-18 20:49:37,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:37,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:37,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:37,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:37,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:37,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:37,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:49:37,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:37,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:49:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:37,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:49:37,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:37,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:37,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:37,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515355157] [2022-11-18 20:49:37,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515355157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:37,776 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:37,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:49:37,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421608771] [2022-11-18 20:49:37,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:37,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:49:37,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:37,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:49:37,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:49:37,778 INFO L87 Difference]: Start difference. First operand 1941 states and 2419 transitions. Second operand has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:42,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:42,401 INFO L93 Difference]: Finished difference Result 2957 states and 4066 transitions. [2022-11-18 20:49:42,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:49:42,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:49:42,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:42,409 INFO L225 Difference]: With dead ends: 2957 [2022-11-18 20:49:42,410 INFO L226 Difference]: Without dead ends: 2600 [2022-11-18 20:49:42,412 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 [2022-11-18 20:49:42,413 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1781 mSDsluCounter, 1098 mSDsCounter, 0 mSdLazyCounter, 2530 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1810 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 2672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2530 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:42,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1810 Valid, 1508 Invalid, 2672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2530 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-18 20:49:42,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2600 states. [2022-11-18 20:49:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2600 to 2317. [2022-11-18 20:49:42,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2317 states, 1941 states have (on average 1.3080886141164347) internal successors, (2539), 1956 states have internal predecessors, (2539), 201 states have call successors, (201), 142 states have call predecessors, (201), 173 states have return successors, (280), 219 states have call predecessors, (280), 200 states have call successors, (280) [2022-11-18 20:49:42,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2317 states to 2317 states and 3020 transitions. [2022-11-18 20:49:42,893 INFO L78 Accepts]: Start accepts. Automaton has 2317 states and 3020 transitions. Word has length 178 [2022-11-18 20:49:42,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:42,894 INFO L495 AbstractCegarLoop]: Abstraction has 2317 states and 3020 transitions. [2022-11-18 20:49:42,894 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 28.0) internal successors, (168), 4 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:42,894 INFO L276 IsEmpty]: Start isEmpty. Operand 2317 states and 3020 transitions. [2022-11-18 20:49:42,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:49:42,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:42,898 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:42,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-18 20:49:42,898 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:42,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:42,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1648070057, now seen corresponding path program 1 times [2022-11-18 20:49:42,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:42,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124363408] [2022-11-18 20:49:42,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:42,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:42,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:43,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:43,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:43,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:49:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:43,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:49:43,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:49:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:43,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:43,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:43,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124363408] [2022-11-18 20:49:43,165 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124363408] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:43,165 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:43,165 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:43,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003818746] [2022-11-18 20:49:43,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:43,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:43,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:43,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:43,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:43,167 INFO L87 Difference]: Start difference. First operand 2317 states and 3020 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:48,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:48,710 INFO L93 Difference]: Finished difference Result 3872 states and 5546 transitions. [2022-11-18 20:49:48,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:49:48,711 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:49:48,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:48,723 INFO L225 Difference]: With dead ends: 3872 [2022-11-18 20:49:48,723 INFO L226 Difference]: Without dead ends: 3139 [2022-11-18 20:49:48,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:49:48,728 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 1822 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3818 mSolverCounterSat, 98 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 2690 SdHoareTripleChecker+Invalid, 3916 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 98 IncrementalHoareTripleChecker+Valid, 3818 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:48,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 2690 Invalid, 3916 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [98 Valid, 3818 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-18 20:49:48,732 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3139 states. [2022-11-18 20:49:49,204 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3139 to 2667. [2022-11-18 20:49:49,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2263 states have (on average 1.344675209898365) internal successors, (3043), 2279 states have internal predecessors, (3043), 222 states have call successors, (222), 148 states have call predecessors, (222), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-11-18 20:49:49,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3568 transitions. [2022-11-18 20:49:49,215 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3568 transitions. Word has length 178 [2022-11-18 20:49:49,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:49,215 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 3568 transitions. [2022-11-18 20:49:49,216 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:49,216 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3568 transitions. [2022-11-18 20:49:49,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:49:49,220 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:49,220 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:49,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-18 20:49:49,220 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:49,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:49,221 INFO L85 PathProgramCache]: Analyzing trace with hash 1241705561, now seen corresponding path program 1 times [2022-11-18 20:49:49,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:49,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [409159769] [2022-11-18 20:49:49,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:49,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:49,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:49,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:49:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:49:49,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:49:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:49,503 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:49,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:49,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [409159769] [2022-11-18 20:49:49,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [409159769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:49,504 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:49,504 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:49,504 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339537937] [2022-11-18 20:49:49,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:49,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:49,505 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:49,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:49,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:49,506 INFO L87 Difference]: Start difference. First operand 2667 states and 3568 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:52,985 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:52,986 INFO L93 Difference]: Finished difference Result 4240 states and 6134 transitions. [2022-11-18 20:49:52,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:49:52,986 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:49:52,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:52,999 INFO L225 Difference]: With dead ends: 4240 [2022-11-18 20:49:52,999 INFO L226 Difference]: Without dead ends: 3157 [2022-11-18 20:49:53,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:49:53,005 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1349 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2018 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:53,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 1496 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2018 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-18 20:49:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3157 states. [2022-11-18 20:49:53,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3157 to 2667. [2022-11-18 20:49:53,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2263 states have (on average 1.3433495360141405) internal successors, (3040), 2279 states have internal predecessors, (3040), 222 states have call successors, (222), 148 states have call predecessors, (222), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-11-18 20:49:53,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3565 transitions. [2022-11-18 20:49:53,569 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3565 transitions. Word has length 178 [2022-11-18 20:49:53,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:53,570 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 3565 transitions. [2022-11-18 20:49:53,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:53,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3565 transitions. [2022-11-18 20:49:53,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:49:53,573 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:53,574 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:53,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-18 20:49:53,574 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:53,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:53,575 INFO L85 PathProgramCache]: Analyzing trace with hash -1158927849, now seen corresponding path program 1 times [2022-11-18 20:49:53,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:53,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [978572691] [2022-11-18 20:49:53,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:53,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:53,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:53,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:49:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:49:53,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:49:53,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:53,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:53,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:53,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [978572691] [2022-11-18 20:49:53,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [978572691] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:53,853 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:53,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:53,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915502617] [2022-11-18 20:49:53,853 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:53,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:53,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:53,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:53,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:53,857 INFO L87 Difference]: Start difference. First operand 2667 states and 3565 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:57,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:49:57,051 INFO L93 Difference]: Finished difference Result 4236 states and 6117 transitions. [2022-11-18 20:49:57,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:49:57,051 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:49:57,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:49:57,065 INFO L225 Difference]: With dead ends: 4236 [2022-11-18 20:49:57,065 INFO L226 Difference]: Without dead ends: 3153 [2022-11-18 20:49:57,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:49:57,070 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1347 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 2002 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2002 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:49:57,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1496 Invalid, 2103 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2002 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:49:57,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3153 states. [2022-11-18 20:49:57,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3153 to 2667. [2022-11-18 20:49:57,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2667 states, 2263 states have (on average 1.342023862129916) internal successors, (3037), 2279 states have internal predecessors, (3037), 222 states have call successors, (222), 148 states have call predecessors, (222), 180 states have return successors, (303), 241 states have call predecessors, (303), 221 states have call successors, (303) [2022-11-18 20:49:57,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2667 states to 2667 states and 3562 transitions. [2022-11-18 20:49:57,573 INFO L78 Accepts]: Start accepts. Automaton has 2667 states and 3562 transitions. Word has length 178 [2022-11-18 20:49:57,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:49:57,573 INFO L495 AbstractCegarLoop]: Abstraction has 2667 states and 3562 transitions. [2022-11-18 20:49:57,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:49:57,573 INFO L276 IsEmpty]: Start isEmpty. Operand 2667 states and 3562 transitions. [2022-11-18 20:49:57,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:49:57,577 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:49:57,577 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:49:57,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-18 20:49:57,577 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:49:57,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:49:57,578 INFO L85 PathProgramCache]: Analyzing trace with hash 287653017, now seen corresponding path program 1 times [2022-11-18 20:49:57,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:49:57,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132671454] [2022-11-18 20:49:57,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:49:57,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:49:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:57,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:49:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:57,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:49:57,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:57,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:49:57,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:57,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:49:57,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:57,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:49:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:49:57,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:49:57,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:49:57,912 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132671454] [2022-11-18 20:49:57,912 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132671454] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:49:57,913 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:49:57,913 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:49:57,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417259363] [2022-11-18 20:49:57,913 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:49:57,914 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:49:57,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:49:57,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:49:57,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:49:57,915 INFO L87 Difference]: Start difference. First operand 2667 states and 3562 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:03,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:03,957 INFO L93 Difference]: Finished difference Result 5211 states and 7658 transitions. [2022-11-18 20:50:03,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:50:03,957 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:03,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:03,974 INFO L225 Difference]: With dead ends: 5211 [2022-11-18 20:50:03,974 INFO L226 Difference]: Without dead ends: 4128 [2022-11-18 20:50:03,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:50:03,980 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1803 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3743 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1832 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3843 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3743 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:03,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1832 Valid, 2688 Invalid, 3843 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3743 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-11-18 20:50:03,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-11-18 20:50:04,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3376. [2022-11-18 20:50:04,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2916 states have (on average 1.3902606310013716) internal successors, (4054), 2934 states have internal predecessors, (4054), 264 states have call successors, (264), 160 states have call predecessors, (264), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-11-18 20:50:04,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4671 transitions. [2022-11-18 20:50:04,688 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4671 transitions. Word has length 178 [2022-11-18 20:50:04,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:04,689 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4671 transitions. [2022-11-18 20:50:04,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:04,689 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4671 transitions. [2022-11-18 20:50:04,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:04,692 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:04,693 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:04,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-18 20:50:04,693 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:04,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:04,694 INFO L85 PathProgramCache]: Analyzing trace with hash -635514409, now seen corresponding path program 1 times [2022-11-18 20:50:04,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:04,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500013832] [2022-11-18 20:50:04,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:04,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:04,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:04,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:04,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:04,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:04,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:04,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:04,935 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500013832] [2022-11-18 20:50:04,935 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500013832] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:04,935 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:04,936 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:04,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697755204] [2022-11-18 20:50:04,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:04,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:04,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:04,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:04,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:04,938 INFO L87 Difference]: Start difference. First operand 3376 states and 4671 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:07,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:07,937 INFO L93 Difference]: Finished difference Result 5908 states and 8756 transitions. [2022-11-18 20:50:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:07,938 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:07,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:07,948 INFO L225 Difference]: With dead ends: 5908 [2022-11-18 20:50:07,949 INFO L226 Difference]: Without dead ends: 4116 [2022-11-18 20:50:07,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:50:07,955 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1641 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1720 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1671 SdHoareTripleChecker+Valid, 1250 SdHoareTripleChecker+Invalid, 1863 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 1720 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:07,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1671 Valid, 1250 Invalid, 1863 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 1720 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:50:07,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4116 states. [2022-11-18 20:50:08,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4116 to 3376. [2022-11-18 20:50:08,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3376 states, 2916 states have (on average 1.3885459533607682) internal successors, (4049), 2934 states have internal predecessors, (4049), 264 states have call successors, (264), 160 states have call predecessors, (264), 194 states have return successors, (353), 285 states have call predecessors, (353), 263 states have call successors, (353) [2022-11-18 20:50:08,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3376 states to 3376 states and 4666 transitions. [2022-11-18 20:50:08,501 INFO L78 Accepts]: Start accepts. Automaton has 3376 states and 4666 transitions. Word has length 178 [2022-11-18 20:50:08,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:08,502 INFO L495 AbstractCegarLoop]: Abstraction has 3376 states and 4666 transitions. [2022-11-18 20:50:08,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:08,502 INFO L276 IsEmpty]: Start isEmpty. Operand 3376 states and 4666 transitions. [2022-11-18 20:50:08,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:08,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:08,506 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:08,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-18 20:50:08,506 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:08,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:08,507 INFO L85 PathProgramCache]: Analyzing trace with hash -249652007, now seen corresponding path program 1 times [2022-11-18 20:50:08,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:08,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673693033] [2022-11-18 20:50:08,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:08,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:08,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:08,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:08,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:08,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:08,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:08,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:08,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:08,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:08,769 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:08,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:08,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1673693033] [2022-11-18 20:50:08,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1673693033] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:08,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:08,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:08,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397034660] [2022-11-18 20:50:08,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:08,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:08,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:08,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:08,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:08,772 INFO L87 Difference]: Start difference. First operand 3376 states and 4666 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:15,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:15,087 INFO L93 Difference]: Finished difference Result 7804 states and 11735 transitions. [2022-11-18 20:50:15,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:50:15,088 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:15,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:15,103 INFO L225 Difference]: With dead ends: 7804 [2022-11-18 20:50:15,103 INFO L226 Difference]: Without dead ends: 6012 [2022-11-18 20:50:15,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:50:15,109 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1795 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3705 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1824 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3705 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:15,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1824 Valid, 2688 Invalid, 3805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3705 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-18 20:50:15,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6012 states. [2022-11-18 20:50:15,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6012 to 4798. [2022-11-18 20:50:15,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.438949361097965) internal successors, (6081), 4248 states have internal predecessors, (6081), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-18 20:50:15,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6888 transitions. [2022-11-18 20:50:15,929 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6888 transitions. Word has length 178 [2022-11-18 20:50:15,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:15,929 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6888 transitions. [2022-11-18 20:50:15,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6888 transitions. [2022-11-18 20:50:15,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:15,933 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:15,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:15,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-11-18 20:50:15,934 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:15,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:15,934 INFO L85 PathProgramCache]: Analyzing trace with hash -514299497, now seen corresponding path program 1 times [2022-11-18 20:50:15,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:15,935 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1525166651] [2022-11-18 20:50:15,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:15,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:15,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:16,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:16,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:16,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:16,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:16,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:16,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:16,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:16,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:16,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:16,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1525166651] [2022-11-18 20:50:16,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1525166651] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:16,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:16,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:16,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166523563] [2022-11-18 20:50:16,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:16,195 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:16,200 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:16,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:16,200 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:16,201 INFO L87 Difference]: Start difference. First operand 4798 states and 6888 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:19,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:19,929 INFO L93 Difference]: Finished difference Result 9248 states and 14027 transitions. [2022-11-18 20:50:19,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:19,930 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:19,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:19,945 INFO L225 Difference]: With dead ends: 9248 [2022-11-18 20:50:19,946 INFO L226 Difference]: Without dead ends: 6034 [2022-11-18 20:50:19,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:50:19,955 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1350 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1945 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1380 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1945 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:19,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1380 Valid, 1496 Invalid, 2046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1945 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 20:50:19,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6034 states. [2022-11-18 20:50:20,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6034 to 4798. [2022-11-18 20:50:20,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.436819687647894) internal successors, (6072), 4248 states have internal predecessors, (6072), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-18 20:50:20,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6879 transitions. [2022-11-18 20:50:20,784 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6879 transitions. Word has length 178 [2022-11-18 20:50:20,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:20,784 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6879 transitions. [2022-11-18 20:50:20,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:20,784 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6879 transitions. [2022-11-18 20:50:20,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:20,788 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:20,788 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:20,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-11-18 20:50:20,789 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:20,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:20,790 INFO L85 PathProgramCache]: Analyzing trace with hash 1416826137, now seen corresponding path program 1 times [2022-11-18 20:50:20,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:20,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800578977] [2022-11-18 20:50:20,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:20,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:20,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:20,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:20,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:20,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:21,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:21,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:21,034 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:21,035 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:21,035 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800578977] [2022-11-18 20:50:21,035 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800578977] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:21,035 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:21,035 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:21,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130837340] [2022-11-18 20:50:21,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:21,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:21,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:21,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:21,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:21,037 INFO L87 Difference]: Start difference. First operand 4798 states and 6879 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:24,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:24,809 INFO L93 Difference]: Finished difference Result 9228 states and 13960 transitions. [2022-11-18 20:50:24,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:24,810 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:24,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:24,824 INFO L225 Difference]: With dead ends: 9228 [2022-11-18 20:50:24,824 INFO L226 Difference]: Without dead ends: 6014 [2022-11-18 20:50:24,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:50:24,832 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1347 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 1921 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 1496 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:24,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 1496 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1921 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-18 20:50:24,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-11-18 20:50:25,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 4798. [2022-11-18 20:50:25,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.434690014197823) internal successors, (6063), 4248 states have internal predecessors, (6063), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-18 20:50:25,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6870 transitions. [2022-11-18 20:50:25,704 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6870 transitions. Word has length 178 [2022-11-18 20:50:25,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:25,704 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6870 transitions. [2022-11-18 20:50:25,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:25,704 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6870 transitions. [2022-11-18 20:50:25,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:25,708 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:25,708 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:25,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-11-18 20:50:25,709 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:25,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:25,709 INFO L85 PathProgramCache]: Analyzing trace with hash -981161701, now seen corresponding path program 1 times [2022-11-18 20:50:25,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:25,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12755874] [2022-11-18 20:50:25,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:25,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:25,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:25,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:25,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:25,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:25,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:25,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:25,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:25,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:25,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:25,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:25,928 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:25,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:25,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12755874] [2022-11-18 20:50:25,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12755874] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:25,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:25,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:25,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136065423] [2022-11-18 20:50:25,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:25,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:25,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:25,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:25,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:25,930 INFO L87 Difference]: Start difference. First operand 4798 states and 6870 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:29,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:29,626 INFO L93 Difference]: Finished difference Result 9218 states and 13913 transitions. [2022-11-18 20:50:29,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:29,627 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:29,646 INFO L225 Difference]: With dead ends: 9218 [2022-11-18 20:50:29,646 INFO L226 Difference]: Without dead ends: 6004 [2022-11-18 20:50:29,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:50:29,657 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1562 mSDsluCounter, 891 mSDsCounter, 0 mSdLazyCounter, 1740 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1592 SdHoareTripleChecker+Valid, 1251 SdHoareTripleChecker+Invalid, 1882 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 1740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:29,657 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1592 Valid, 1251 Invalid, 1882 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 1740 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-18 20:50:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6004 states. [2022-11-18 20:50:30,861 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6004 to 4798. [2022-11-18 20:50:30,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4798 states, 4226 states have (on average 1.432560340747752) internal successors, (6054), 4248 states have internal predecessors, (6054), 348 states have call successors, (348), 184 states have call predecessors, (348), 222 states have return successors, (459), 373 states have call predecessors, (459), 347 states have call successors, (459) [2022-11-18 20:50:30,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4798 states to 4798 states and 6861 transitions. [2022-11-18 20:50:30,875 INFO L78 Accepts]: Start accepts. Automaton has 4798 states and 6861 transitions. Word has length 178 [2022-11-18 20:50:30,875 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:30,876 INFO L495 AbstractCegarLoop]: Abstraction has 4798 states and 6861 transitions. [2022-11-18 20:50:30,876 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:30,876 INFO L276 IsEmpty]: Start isEmpty. Operand 4798 states and 6861 transitions. [2022-11-18 20:50:30,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:30,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:30,880 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:30,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-11-18 20:50:30,881 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:30,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:30,881 INFO L85 PathProgramCache]: Analyzing trace with hash -642874151, now seen corresponding path program 1 times [2022-11-18 20:50:30,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:30,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704060243] [2022-11-18 20:50:30,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:30,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:30,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:30,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:30,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:31,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:31,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:31,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:31,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:31,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:31,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:31,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:31,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:31,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:31,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704060243] [2022-11-18 20:50:31,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704060243] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:31,226 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:31,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:31,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317856758] [2022-11-18 20:50:31,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:31,227 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:31,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:31,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:31,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:31,229 INFO L87 Difference]: Start difference. First operand 4798 states and 6861 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:38,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:38,864 INFO L93 Difference]: Finished difference Result 12960 states and 19739 transitions. [2022-11-18 20:50:38,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-18 20:50:38,865 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:38,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:38,931 INFO L225 Difference]: With dead ends: 12960 [2022-11-18 20:50:38,931 INFO L226 Difference]: Without dead ends: 9746 [2022-11-18 20:50:38,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-18 20:50:38,937 INFO L413 NwaCegarLoop]: 611 mSDtfsCounter, 1775 mSDsluCounter, 2077 mSDsCounter, 0 mSdLazyCounter, 3598 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1804 SdHoareTripleChecker+Valid, 2688 SdHoareTripleChecker+Invalid, 3698 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 3598 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:38,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1804 Valid, 2688 Invalid, 3698 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 3598 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-18 20:50:38,947 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9746 states. [2022-11-18 20:50:40,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9746 to 7683. [2022-11-18 20:50:40,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7683 states, 6887 states have (on average 1.4735007986060693) internal successors, (10148), 6917 states have internal predecessors, (10148), 516 states have call successors, (516), 232 states have call predecessors, (516), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-11-18 20:50:40,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 11353 transitions. [2022-11-18 20:50:40,708 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 11353 transitions. Word has length 178 [2022-11-18 20:50:40,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:40,709 INFO L495 AbstractCegarLoop]: Abstraction has 7683 states and 11353 transitions. [2022-11-18 20:50:40,709 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:40,710 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 11353 transitions. [2022-11-18 20:50:40,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:40,716 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:40,716 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:40,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-11-18 20:50:40,719 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:40,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:40,720 INFO L85 PathProgramCache]: Analyzing trace with hash -216319653, now seen corresponding path program 1 times [2022-11-18 20:50:40,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:40,720 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1411951483] [2022-11-18 20:50:40,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:40,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:40,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:40,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:40,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:40,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:40,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:40,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:41,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:41,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:41,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:41,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:41,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:41,027 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1411951483] [2022-11-18 20:50:41,027 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1411951483] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:41,027 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:41,028 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:41,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755818847] [2022-11-18 20:50:41,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:41,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:41,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:41,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:41,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:41,031 INFO L87 Difference]: Start difference. First operand 7683 states and 11353 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:46,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:50:46,628 INFO L93 Difference]: Finished difference Result 15904 states and 24420 transitions. [2022-11-18 20:50:46,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:50:46,629 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:50:46,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:50:46,649 INFO L225 Difference]: With dead ends: 15904 [2022-11-18 20:50:46,649 INFO L226 Difference]: Without dead ends: 9805 [2022-11-18 20:50:46,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:50:46,660 INFO L413 NwaCegarLoop]: 360 mSDtfsCounter, 1342 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1881 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1372 SdHoareTripleChecker+Valid, 1494 SdHoareTripleChecker+Invalid, 1984 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1881 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:50:46,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1372 Valid, 1494 Invalid, 1984 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1881 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-18 20:50:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9805 states. [2022-11-18 20:50:48,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9805 to 7683. [2022-11-18 20:50:48,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7683 states, 6887 states have (on average 1.471032379846087) internal successors, (10131), 6917 states have internal predecessors, (10131), 516 states have call successors, (516), 232 states have call predecessors, (516), 278 states have return successors, (689), 549 states have call predecessors, (689), 515 states have call successors, (689) [2022-11-18 20:50:48,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7683 states to 7683 states and 11336 transitions. [2022-11-18 20:50:48,815 INFO L78 Accepts]: Start accepts. Automaton has 7683 states and 11336 transitions. Word has length 178 [2022-11-18 20:50:48,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:50:48,816 INFO L495 AbstractCegarLoop]: Abstraction has 7683 states and 11336 transitions. [2022-11-18 20:50:48,816 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:50:48,816 INFO L276 IsEmpty]: Start isEmpty. Operand 7683 states and 11336 transitions. [2022-11-18 20:50:48,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:50:48,821 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:50:48,822 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:50:48,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-11-18 20:50:48,822 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:50:48,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:50:48,823 INFO L85 PathProgramCache]: Analyzing trace with hash -756749159, now seen corresponding path program 1 times [2022-11-18 20:50:48,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:50:48,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087686553] [2022-11-18 20:50:48,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:50:48,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:50:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:48,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:50:48,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:50:49,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:50:49,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:50:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:50:49,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:50:49,108 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:50:49,108 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:50:49,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087686553] [2022-11-18 20:50:49,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087686553] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:50:49,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:50:49,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:50:49,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855534874] [2022-11-18 20:50:49,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:50:49,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:50:49,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:50:49,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:50:49,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:50:49,111 INFO L87 Difference]: Start difference. First operand 7683 states and 11336 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:51:00,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:00,759 INFO L93 Difference]: Finished difference Result 25977 states and 40055 transitions. [2022-11-18 20:51:00,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:51:00,760 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:51:00,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:00,805 INFO L225 Difference]: With dead ends: 25977 [2022-11-18 20:51:00,805 INFO L226 Difference]: Without dead ends: 19878 [2022-11-18 20:51:00,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:51:00,824 INFO L413 NwaCegarLoop]: 419 mSDtfsCounter, 2294 mSDsluCounter, 1456 mSDsCounter, 0 mSdLazyCounter, 3251 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2336 SdHoareTripleChecker+Valid, 1875 SdHoareTripleChecker+Invalid, 3394 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 3251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:00,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2336 Valid, 1875 Invalid, 3394 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 3251 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-18 20:51:00,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19878 states. [2022-11-18 20:51:03,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19878 to 13349. [2022-11-18 20:51:03,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13349 states, 12121 states have (on average 1.4988037290652587) internal successors, (18167), 12167 states have internal predecessors, (18167), 836 states have call successors, (836), 328 states have call predecessors, (836), 390 states have return successors, (1187), 885 states have call predecessors, (1187), 835 states have call successors, (1187) [2022-11-18 20:51:04,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13349 states to 13349 states and 20190 transitions. [2022-11-18 20:51:04,013 INFO L78 Accepts]: Start accepts. Automaton has 13349 states and 20190 transitions. Word has length 178 [2022-11-18 20:51:04,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:04,013 INFO L495 AbstractCegarLoop]: Abstraction has 13349 states and 20190 transitions. [2022-11-18 20:51:04,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:51:04,013 INFO L276 IsEmpty]: Start isEmpty. Operand 13349 states and 20190 transitions. [2022-11-18 20:51:04,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:51:04,020 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:04,020 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:04,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2022-11-18 20:51:04,021 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:04,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:04,021 INFO L85 PathProgramCache]: Analyzing trace with hash -912729701, now seen corresponding path program 1 times [2022-11-18 20:51:04,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:04,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374039370] [2022-11-18 20:51:04,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:04,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:04,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:51:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:04,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:51:04,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:04,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:51:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:04,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:51:04,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:04,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:51:04,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:04,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:04,262 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:04,262 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374039370] [2022-11-18 20:51:04,263 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374039370] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:04,263 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:04,263 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:51:04,263 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766563556] [2022-11-18 20:51:04,263 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:04,264 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:51:04,264 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:04,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:51:04,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:51:04,265 INFO L87 Difference]: Start difference. First operand 13349 states and 20190 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:51:21,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:21,692 INFO L93 Difference]: Finished difference Result 48601 states and 75679 transitions. [2022-11-18 20:51:21,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:51:21,693 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:51:21,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:21,790 INFO L225 Difference]: With dead ends: 48601 [2022-11-18 20:51:21,790 INFO L226 Difference]: Without dead ends: 36836 [2022-11-18 20:51:21,820 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:51:21,820 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 1869 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 4328 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:21,821 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 2678 Invalid, 4328 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 4226 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-11-18 20:51:21,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36836 states. [2022-11-18 20:51:27,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36836 to 24742. [2022-11-18 20:51:27,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24742 states, 22666 states have (on average 1.5166769610870907) internal successors, (34377), 22744 states have internal predecessors, (34377), 1460 states have call successors, (1460), 520 states have call predecessors, (1460), 614 states have return successors, (2329), 1541 states have call predecessors, (2329), 1459 states have call successors, (2329) [2022-11-18 20:51:27,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24742 states to 24742 states and 38166 transitions. [2022-11-18 20:51:27,993 INFO L78 Accepts]: Start accepts. Automaton has 24742 states and 38166 transitions. Word has length 178 [2022-11-18 20:51:27,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-18 20:51:27,993 INFO L495 AbstractCegarLoop]: Abstraction has 24742 states and 38166 transitions. [2022-11-18 20:51:27,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:51:27,993 INFO L276 IsEmpty]: Start isEmpty. Operand 24742 states and 38166 transitions. [2022-11-18 20:51:28,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2022-11-18 20:51:28,012 INFO L187 NwaCegarLoop]: Found error trace [2022-11-18 20:51:28,013 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:51:28,013 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2022-11-18 20:51:28,013 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, error1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-18 20:51:28,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:51:28,014 INFO L85 PathProgramCache]: Analyzing trace with hash -502119335, now seen corresponding path program 1 times [2022-11-18 20:51:28,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:51:28,014 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741494741] [2022-11-18 20:51:28,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:51:28,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:51:28,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-18 20:51:28,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-18 20:51:28,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-18 20:51:28,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-18 20:51:28,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-18 20:51:28,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:51:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:51:28,274 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:51:28,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741494741] [2022-11-18 20:51:28,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741494741] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:51:28,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:51:28,275 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:51:28,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362962456] [2022-11-18 20:51:28,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:51:28,277 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:51:28,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:51:28,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:51:28,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:51:28,278 INFO L87 Difference]: Start difference. First operand 24742 states and 38166 transitions. Second operand has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-18 20:51:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-18 20:51:58,591 INFO L93 Difference]: Finished difference Result 93464 states and 146981 transitions. [2022-11-18 20:51:58,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-18 20:51:58,592 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 24.0) internal successors, (168), 5 states have internal predecessors, (168), 2 states have call successors, (5), 3 states have call predecessors, (5), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 178 [2022-11-18 20:51:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-18 20:51:58,792 INFO L225 Difference]: With dead ends: 93464 [2022-11-18 20:51:58,792 INFO L226 Difference]: Without dead ends: 70306 [2022-11-18 20:51:58,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-18 20:51:58,850 INFO L413 NwaCegarLoop]: 609 mSDtfsCounter, 2140 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 3522 mSolverCounterSat, 105 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2182 SdHoareTripleChecker+Valid, 2678 SdHoareTripleChecker+Invalid, 3627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 105 IncrementalHoareTripleChecker+Valid, 3522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-18 20:51:58,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2182 Valid, 2678 Invalid, 3627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [105 Valid, 3522 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-18 20:51:58,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70306 states.