./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 5519dfe0be74dafaa274c71ed936f0e7133f32a3aa7e45c032b5d5b905afa484 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-b5237d8 [2022-11-21 17:05:47,296 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 17:05:47,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 17:05:47,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 17:05:47,323 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 17:05:47,326 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 17:05:47,329 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 17:05:47,332 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 17:05:47,335 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 17:05:47,341 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 17:05:47,344 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 17:05:47,346 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 17:05:47,346 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 17:05:47,352 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 17:05:47,353 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 17:05:47,355 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 17:05:47,357 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 17:05:47,358 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 17:05:47,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 17:05:47,366 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 17:05:47,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 17:05:47,371 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 17:05:47,373 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 17:05:47,374 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 17:05:47,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 17:05:47,385 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 17:05:47,386 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 17:05:47,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 17:05:47,389 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 17:05:47,390 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 17:05:47,391 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 17:05:47,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 17:05:47,393 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 17:05:47,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 17:05:47,397 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 17:05:47,397 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 17:05:47,398 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 17:05:47,398 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 17:05:47,399 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 17:05:47,400 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 17:05:47,401 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 17:05:47,402 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 17:05:47,437 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 17:05:47,440 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 17:05:47,441 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 17:05:47,441 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 17:05:47,442 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 17:05:47,442 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 17:05:47,443 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 17:05:47,443 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 17:05:47,443 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 17:05:47,444 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 17:05:47,445 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 17:05:47,445 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 17:05:47,445 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 17:05:47,446 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 17:05:47,446 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 17:05:47,446 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 17:05:47,446 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 17:05:47,446 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 17:05:47,447 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 17:05:47,447 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 17:05:47,447 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 17:05:47,447 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 17:05:47,448 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 17:05:47,448 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 17:05:47,448 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:05:47,449 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 17:05:47,449 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 17:05:47,449 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 17:05:47,449 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 17:05:47,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 17:05:47,450 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 17:05:47,450 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 17:05:47,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 17:05:47,451 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_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5519dfe0be74dafaa274c71ed936f0e7133f32a3aa7e45c032b5d5b905afa484 [2022-11-21 17:05:47,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 17:05:47,776 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 17:05:47,779 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 17:05:47,780 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 17:05:47,781 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 17:05:47,782 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2022-11-21 17:05:50,934 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 17:05:51,171 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 17:05:51,172 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c [2022-11-21 17:05:51,186 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/data/79a3db1bc/7ea9b4798fa34487b2dc2ec38918eb01/FLAGba5eb127c [2022-11-21 17:05:51,201 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/data/79a3db1bc/7ea9b4798fa34487b2dc2ec38918eb01 [2022-11-21 17:05:51,204 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 17:05:51,205 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 17:05:51,207 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 17:05:51,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 17:05:51,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 17:05:51,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:51,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@535f216d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51, skipping insertion in model container [2022-11-21 17:05:51,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:51,221 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 17:05:51,290 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 17:05:51,470 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[911,924] [2022-11-21 17:05:51,584 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[8416,8429] [2022-11-21 17:05:51,769 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:05:51,784 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 17:05:51,797 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[911,924] [2022-11-21 17:05:51,832 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.14.cil.c[8416,8429] [2022-11-21 17:05:51,900 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 17:05:51,937 INFO L208 MainTranslator]: Completed translation [2022-11-21 17:05:51,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51 WrapperNode [2022-11-21 17:05:51,938 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 17:05:51,939 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 17:05:51,939 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 17:05:51,940 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 17:05:51,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,018 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,066 INFO L138 Inliner]: procedures = 79, calls = 98, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1081 [2022-11-21 17:05:52,067 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 17:05:52,068 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 17:05:52,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 17:05:52,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 17:05:52,082 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,083 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,093 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,100 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,133 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,147 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,166 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,172 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 17:05:52,173 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 17:05:52,182 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 17:05:52,182 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 17:05:52,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (1/1) ... [2022-11-21 17:05:52,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 17:05:52,204 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:05:52,224 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 17:05:52,254 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 17:05:52,273 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 17:05:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-21 17:05:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-21 17:05:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-21 17:05:52,274 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-21 17:05:52,274 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-21 17:05:52,275 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-21 17:05:52,275 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-21 17:05:52,276 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-21 17:05:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-21 17:05:52,276 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-21 17:05:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-21 17:05:52,276 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-21 17:05:52,276 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-21 17:05:52,277 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-21 17:05:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-21 17:05:52,277 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-21 17:05:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-21 17:05:52,277 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-21 17:05:52,277 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-21 17:05:52,278 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-21 17:05:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-21 17:05:52,278 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-21 17:05:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 17:05:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-21 17:05:52,278 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-21 17:05:52,278 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-21 17:05:52,279 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-21 17:05:52,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 17:05:52,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 17:05:52,280 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-21 17:05:52,280 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-21 17:05:52,281 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-21 17:05:52,281 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-21 17:05:52,474 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 17:05:52,476 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 17:05:53,461 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-21 17:05:53,461 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##55: assume 1 == ~q_free~0;~c_dr_st~0 := 2;~c_dr_pc~0 := 2;~a_t~0 := do_read_c_~a~0#1; [2022-11-21 17:05:53,620 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 17:05:53,647 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 17:05:53,647 INFO L300 CfgBuilder]: Removed 19 assume(true) statements. [2022-11-21 17:05:53,650 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:05:53 BoogieIcfgContainer [2022-11-21 17:05:53,650 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 17:05:53,653 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 17:05:53,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 17:05:53,656 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 17:05:53,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 05:05:51" (1/3) ... [2022-11-21 17:05:53,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0c8d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:05:53, skipping insertion in model container [2022-11-21 17:05:53,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 05:05:51" (2/3) ... [2022-11-21 17:05:53,689 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c0c8d5e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 05:05:53, skipping insertion in model container [2022-11-21 17:05:53,689 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 05:05:53" (3/3) ... [2022-11-21 17:05:53,690 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.14.cil.c [2022-11-21 17:05:53,708 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 17:05:53,709 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-21 17:05:53,781 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 17:05:53,788 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;@45a395d5, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 17:05:53,788 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-21 17:05:53,795 INFO L276 IsEmpty]: Start isEmpty. Operand has 505 states, 443 states have (on average 1.6410835214446953) internal successors, (727), 451 states have internal predecessors, (727), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) [2022-11-21 17:05:53,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:05:53,808 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:53,808 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] [2022-11-21 17:05:53,809 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:53,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:53,815 INFO L85 PathProgramCache]: Analyzing trace with hash 1125668429, now seen corresponding path program 1 times [2022-11-21 17:05:53,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:53,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625055696] [2022-11-21 17:05:53,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:53,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:54,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:05:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:05:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:05:54,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:05:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:05:54,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:05:54,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 17:05:54,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:54,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:54,356 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:54,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625055696] [2022-11-21 17:05:54,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625055696] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:54,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:54,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:05:54,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773609983] [2022-11-21 17:05:54,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:54,365 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:05:54,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:54,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:05:54,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:05:54,401 INFO L87 Difference]: Start difference. First operand has 505 states, 443 states have (on average 1.6410835214446953) internal successors, (727), 451 states have internal predecessors, (727), 44 states have call successors, (44), 15 states have call predecessors, (44), 15 states have return successors, (44), 42 states have call predecessors, (44), 44 states have call successors, (44) Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 17:05:55,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:55,772 INFO L93 Difference]: Finished difference Result 999 states and 1610 transitions. [2022-11-21 17:05:55,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:05:55,775 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-11-21 17:05:55,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:55,803 INFO L225 Difference]: With dead ends: 999 [2022-11-21 17:05:55,803 INFO L226 Difference]: Without dead ends: 512 [2022-11-21 17:05:55,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:05:55,819 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 792 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 845 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 804 SdHoareTripleChecker+Valid, 1799 SdHoareTripleChecker+Invalid, 945 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 845 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:55,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [804 Valid, 1799 Invalid, 945 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [100 Valid, 845 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-21 17:05:55,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2022-11-21 17:05:55,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 494. [2022-11-21 17:05:55,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 435 states have (on average 1.554022988505747) internal successors, (676), 440 states have internal predecessors, (676), 44 states have call successors, (44), 15 states have call predecessors, (44), 13 states have return successors, (40), 40 states have call predecessors, (40), 40 states have call successors, (40) [2022-11-21 17:05:55,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 760 transitions. [2022-11-21 17:05:55,949 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 760 transitions. Word has length 65 [2022-11-21 17:05:55,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:55,951 INFO L495 AbstractCegarLoop]: Abstraction has 494 states and 760 transitions. [2022-11-21 17:05:55,952 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 3 states have internal predecessors, (50), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-21 17:05:55,955 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 760 transitions. [2022-11-21 17:05:55,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:05:55,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:55,966 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] [2022-11-21 17:05:55,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 17:05:55,968 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:55,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:55,970 INFO L85 PathProgramCache]: Analyzing trace with hash -261116981, now seen corresponding path program 1 times [2022-11-21 17:05:55,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:55,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1615953432] [2022-11-21 17:05:55,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:55,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:56,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:05:56,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:05:56,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:05:56,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:05:56,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:05:56,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:05:56,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 17:05:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:56,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:56,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1615953432] [2022-11-21 17:05:56,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1615953432] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:56,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:56,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:05:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251562394] [2022-11-21 17:05:56,232 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:56,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:05:56,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:05:56,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:05:56,235 INFO L87 Difference]: Start difference. First operand 494 states and 760 transitions. 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) [2022-11-21 17:05:57,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:05:57,848 INFO L93 Difference]: Finished difference Result 749 states and 1129 transitions. [2022-11-21 17:05:57,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:05:57,849 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 [2022-11-21 17:05:57,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:05:57,854 INFO L225 Difference]: With dead ends: 749 [2022-11-21 17:05:57,854 INFO L226 Difference]: Without dead ends: 645 [2022-11-21 17:05:57,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:05:57,859 INFO L413 NwaCegarLoop]: 438 mSDtfsCounter, 1294 mSDsluCounter, 1764 mSDsCounter, 0 mSdLazyCounter, 1461 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1301 SdHoareTripleChecker+Valid, 2202 SdHoareTripleChecker+Invalid, 1663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 1461 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:05:57,860 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1301 Valid, 2202 Invalid, 1663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 1461 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:05:57,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 645 states. [2022-11-21 17:05:57,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 645 to 606. [2022-11-21 17:05:57,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 525 states have (on average 1.5276190476190477) internal successors, (802), 532 states have internal predecessors, (802), 57 states have call successors, (57), 22 states have call predecessors, (57), 22 states have return successors, (58), 54 states have call predecessors, (58), 53 states have call successors, (58) [2022-11-21 17:05:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 917 transitions. [2022-11-21 17:05:57,937 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 917 transitions. Word has length 65 [2022-11-21 17:05:57,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:05:57,938 INFO L495 AbstractCegarLoop]: Abstraction has 606 states and 917 transitions. [2022-11-21 17:05:57,938 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) [2022-11-21 17:05:57,938 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 917 transitions. [2022-11-21 17:05:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:05:57,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:05:57,942 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] [2022-11-21 17:05:57,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 17:05:57,943 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:05:57,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:05:57,943 INFO L85 PathProgramCache]: Analyzing trace with hash 1417771659, now seen corresponding path program 1 times [2022-11-21 17:05:57,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:05:57,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109603421] [2022-11-21 17:05:57,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:05:57,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:05:57,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:05:58,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:05:58,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:05:58,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:05:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:05:58,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:05:58,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 17:05:58,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:05:58,229 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:05:58,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:05:58,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109603421] [2022-11-21 17:05:58,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109603421] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:05:58,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:05:58,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-21 17:05:58,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266660590] [2022-11-21 17:05:58,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:05:58,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-21 17:05:58,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:05:58,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-21 17:05:58,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-21 17:05:58,233 INFO L87 Difference]: Start difference. First operand 606 states and 917 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) [2022-11-21 17:06:00,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:00,065 INFO L93 Difference]: Finished difference Result 1003 states and 1482 transitions. [2022-11-21 17:06:00,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-21 17:06:00,066 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 [2022-11-21 17:06:00,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:00,074 INFO L225 Difference]: With dead ends: 1003 [2022-11-21 17:06:00,074 INFO L226 Difference]: Without dead ends: 794 [2022-11-21 17:06:00,080 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 [2022-11-21 17:06:00,083 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 1864 mSDsluCounter, 1533 mSDsCounter, 0 mSdLazyCounter, 1717 mSolverCounterSat, 203 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1897 SdHoareTripleChecker+Valid, 1973 SdHoareTripleChecker+Invalid, 1920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 203 IncrementalHoareTripleChecker+Valid, 1717 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:00,085 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1897 Valid, 1973 Invalid, 1920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [203 Valid, 1717 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:06:00,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-11-21 17:06:00,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 718. [2022-11-21 17:06:00,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 615 states have (on average 1.5073170731707317) internal successors, (927), 624 states have internal predecessors, (927), 70 states have call successors, (70), 29 states have call predecessors, (70), 31 states have return successors, (79), 68 states have call predecessors, (79), 66 states have call successors, (79) [2022-11-21 17:06:00,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 1076 transitions. [2022-11-21 17:06:00,163 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 1076 transitions. Word has length 65 [2022-11-21 17:06:00,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:00,164 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 1076 transitions. [2022-11-21 17:06:00,164 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) [2022-11-21 17:06:00,164 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 1076 transitions. [2022-11-21 17:06:00,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-21 17:06:00,168 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:00,169 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] [2022-11-21 17:06:00,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 17:06:00,169 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:00,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:00,170 INFO L85 PathProgramCache]: Analyzing trace with hash -610814451, now seen corresponding path program 1 times [2022-11-21 17:06:00,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:00,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1970476913] [2022-11-21 17:06:00,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:00,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:00,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:00,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:06:00,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:06:00,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:00,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:06:00,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-21 17:06:00,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-21 17:06:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:00,359 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:00,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:00,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1970476913] [2022-11-21 17:06:00,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1970476913] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:00,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:00,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:06:00,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126975105] [2022-11-21 17:06:00,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:00,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:06:00,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:00,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:06:00,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:06:00,363 INFO L87 Difference]: Start difference. First operand 718 states and 1076 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-21 17:06:03,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:03,021 INFO L93 Difference]: Finished difference Result 2264 states and 3273 transitions. [2022-11-21 17:06:03,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 17:06:03,022 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) Word has length 65 [2022-11-21 17:06:03,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:03,031 INFO L225 Difference]: With dead ends: 2264 [2022-11-21 17:06:03,031 INFO L226 Difference]: Without dead ends: 1931 [2022-11-21 17:06:03,033 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2022-11-21 17:06:03,034 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 4419 mSDsluCounter, 1949 mSDsCounter, 0 mSdLazyCounter, 2081 mSolverCounterSat, 730 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4441 SdHoareTripleChecker+Valid, 2468 SdHoareTripleChecker+Invalid, 2811 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 730 IncrementalHoareTripleChecker+Valid, 2081 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:03,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4441 Valid, 2468 Invalid, 2811 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [730 Valid, 2081 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:06:03,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1931 states. [2022-11-21 17:06:03,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1931 to 1771. [2022-11-21 17:06:03,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1771 states, 1463 states have (on average 1.4169514695830485) internal successors, (2073), 1487 states have internal predecessors, (2073), 180 states have call successors, (180), 112 states have call predecessors, (180), 126 states have return successors, (212), 174 states have call predecessors, (212), 176 states have call successors, (212) [2022-11-21 17:06:03,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1771 states to 1771 states and 2465 transitions. [2022-11-21 17:06:03,186 INFO L78 Accepts]: Start accepts. Automaton has 1771 states and 2465 transitions. Word has length 65 [2022-11-21 17:06:03,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:03,187 INFO L495 AbstractCegarLoop]: Abstraction has 1771 states and 2465 transitions. [2022-11-21 17:06:03,187 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 5 states have call successors, (7) [2022-11-21 17:06:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 1771 states and 2465 transitions. [2022-11-21 17:06:03,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 17:06:03,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:03,189 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] [2022-11-21 17:06:03,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 17:06:03,189 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:03,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:03,190 INFO L85 PathProgramCache]: Analyzing trace with hash -2038334069, now seen corresponding path program 1 times [2022-11-21 17:06:03,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:03,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739756743] [2022-11-21 17:06:03,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:03,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:03,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:06:03,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:06:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:06:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 17:06:03,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 17:06:03,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:03,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:03,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:03,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739756743] [2022-11-21 17:06:03,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739756743] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:03,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:03,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:06:03,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177227774] [2022-11-21 17:06:03,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:03,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:06:03,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:03,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:06:03,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:06:03,374 INFO L87 Difference]: Start difference. First operand 1771 states and 2465 transitions. Second operand has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 17:06:05,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:05,105 INFO L93 Difference]: Finished difference Result 3299 states and 4544 transitions. [2022-11-21 17:06:05,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 17:06:05,106 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-11-21 17:06:05,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:05,114 INFO L225 Difference]: With dead ends: 3299 [2022-11-21 17:06:05,115 INFO L226 Difference]: Without dead ends: 1919 [2022-11-21 17:06:05,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-21 17:06:05,121 INFO L413 NwaCegarLoop]: 431 mSDtfsCounter, 1004 mSDsluCounter, 2237 mSDsCounter, 0 mSdLazyCounter, 1987 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 2668 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 1987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:05,122 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 2668 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 1987 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:06:05,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1919 states. [2022-11-21 17:06:05,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1919 to 1811. [2022-11-21 17:06:05,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1811 states, 1495 states have (on average 1.4040133779264214) internal successors, (2099), 1519 states have internal predecessors, (2099), 180 states have call successors, (180), 112 states have call predecessors, (180), 134 states have return successors, (220), 182 states have call predecessors, (220), 176 states have call successors, (220) [2022-11-21 17:06:05,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1811 states to 1811 states and 2499 transitions. [2022-11-21 17:06:05,273 INFO L78 Accepts]: Start accepts. Automaton has 1811 states and 2499 transitions. Word has length 66 [2022-11-21 17:06:05,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:05,273 INFO L495 AbstractCegarLoop]: Abstraction has 1811 states and 2499 transitions. [2022-11-21 17:06:05,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.666666666666667) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 17:06:05,273 INFO L276 IsEmpty]: Start isEmpty. Operand 1811 states and 2499 transitions. [2022-11-21 17:06:05,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-21 17:06:05,274 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:05,275 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] [2022-11-21 17:06:05,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 17:06:05,275 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:05,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:05,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1227273929, now seen corresponding path program 1 times [2022-11-21 17:06:05,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:05,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [915339186] [2022-11-21 17:06:05,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:05,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:05,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:05,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:06:05,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:06:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:06:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-21 17:06:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-21 17:06:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:05,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:05,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [915339186] [2022-11-21 17:06:05,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [915339186] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:05,446 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:05,446 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 17:06:05,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556853180] [2022-11-21 17:06:05,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:05,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 17:06:05,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:05,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 17:06:05,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-21 17:06:05,453 INFO L87 Difference]: Start difference. First operand 1811 states and 2499 transitions. Second operand has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 17:06:08,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:08,135 INFO L93 Difference]: Finished difference Result 5383 states and 7373 transitions. [2022-11-21 17:06:08,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-21 17:06:08,136 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 66 [2022-11-21 17:06:08,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:08,146 INFO L225 Difference]: With dead ends: 5383 [2022-11-21 17:06:08,146 INFO L226 Difference]: Without dead ends: 2202 [2022-11-21 17:06:08,153 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 [2022-11-21 17:06:08,154 INFO L413 NwaCegarLoop]: 519 mSDtfsCounter, 3989 mSDsluCounter, 2429 mSDsCounter, 0 mSdLazyCounter, 2170 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4011 SdHoareTripleChecker+Valid, 2948 SdHoareTripleChecker+Invalid, 2817 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 2170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:08,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4011 Valid, 2948 Invalid, 2817 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 2170 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-21 17:06:08,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2202 states. [2022-11-21 17:06:08,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2202 to 2022. [2022-11-21 17:06:08,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2022 states, 1634 states have (on average 1.3616891064871481) internal successors, (2225), 1660 states have internal predecessors, (2225), 220 states have call successors, (220), 140 states have call predecessors, (220), 166 states have return successors, (266), 224 states have call predecessors, (266), 216 states have call successors, (266) [2022-11-21 17:06:08,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2022 states to 2022 states and 2711 transitions. [2022-11-21 17:06:08,331 INFO L78 Accepts]: Start accepts. Automaton has 2022 states and 2711 transitions. Word has length 66 [2022-11-21 17:06:08,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:08,332 INFO L495 AbstractCegarLoop]: Abstraction has 2022 states and 2711 transitions. [2022-11-21 17:06:08,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.1) internal successors, (51), 7 states have internal predecessors, (51), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2022-11-21 17:06:08,332 INFO L276 IsEmpty]: Start isEmpty. Operand 2022 states and 2711 transitions. [2022-11-21 17:06:08,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 17:06:08,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:08,334 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:08,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-21 17:06:08,335 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:08,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:08,335 INFO L85 PathProgramCache]: Analyzing trace with hash -1550661326, now seen corresponding path program 1 times [2022-11-21 17:06:08,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:08,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301989744] [2022-11-21 17:06:08,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:08,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:08,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:08,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:06:08,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:06:08,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:06:08,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:06:08,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:06:08,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 17:06:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:08,516 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-21 17:06:08,516 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:08,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301989744] [2022-11-21 17:06:08,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301989744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:08,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:08,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:06:08,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [850130152] [2022-11-21 17:06:08,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:08,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:06:08,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:08,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:06:08,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:06:08,518 INFO L87 Difference]: Start difference. First operand 2022 states and 2711 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 17:06:10,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:10,239 INFO L93 Difference]: Finished difference Result 3847 states and 5113 transitions. [2022-11-21 17:06:10,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 17:06:10,240 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 91 [2022-11-21 17:06:10,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:10,251 INFO L225 Difference]: With dead ends: 3847 [2022-11-21 17:06:10,252 INFO L226 Difference]: Without dead ends: 2216 [2022-11-21 17:06:10,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:06:10,259 INFO L413 NwaCegarLoop]: 422 mSDtfsCounter, 669 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 2015 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 671 SdHoareTripleChecker+Valid, 2962 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2015 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:10,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [671 Valid, 2962 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2015 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-21 17:06:10,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2216 states. [2022-11-21 17:06:10,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2216 to 2082. [2022-11-21 17:06:10,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1682 states have (on average 1.3478002378121283) internal successors, (2267), 1708 states have internal predecessors, (2267), 220 states have call successors, (220), 140 states have call predecessors, (220), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2022-11-21 17:06:10,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2765 transitions. [2022-11-21 17:06:10,418 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2765 transitions. Word has length 91 [2022-11-21 17:06:10,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:10,419 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2765 transitions. [2022-11-21 17:06:10,419 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2022-11-21 17:06:10,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2765 transitions. [2022-11-21 17:06:10,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-21 17:06:10,421 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:10,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:10,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-21 17:06:10,422 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:10,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:10,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1106760652, now seen corresponding path program 1 times [2022-11-21 17:06:10,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:10,423 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492051801] [2022-11-21 17:06:10,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:10,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:10,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:06:10,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:06:10,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:10,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:06:10,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:06:10,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:06:10,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-21 17:06:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:10,588 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 17:06:10,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:10,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492051801] [2022-11-21 17:06:10,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492051801] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:10,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:10,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:06:10,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925981760] [2022-11-21 17:06:10,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:10,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:06:10,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:10,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:06:10,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:06:10,591 INFO L87 Difference]: Start difference. First operand 2082 states and 2765 transitions. Second operand has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 17:06:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:11,541 INFO L93 Difference]: Finished difference Result 3882 states and 5120 transitions. [2022-11-21 17:06:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 17:06:11,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 91 [2022-11-21 17:06:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:11,559 INFO L225 Difference]: With dead ends: 3882 [2022-11-21 17:06:11,559 INFO L226 Difference]: Without dead ends: 2192 [2022-11-21 17:06:11,563 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-11-21 17:06:11,565 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 1663 mSDsluCounter, 1014 mSDsCounter, 0 mSdLazyCounter, 536 mSolverCounterSat, 160 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1696 SdHoareTripleChecker+Valid, 1395 SdHoareTripleChecker+Invalid, 696 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 160 IncrementalHoareTripleChecker+Valid, 536 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:11,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1696 Valid, 1395 Invalid, 696 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [160 Valid, 536 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-21 17:06:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2192 states. [2022-11-21 17:06:11,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2192 to 2082. [2022-11-21 17:06:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2082 states, 1682 states have (on average 1.3228299643281807) internal successors, (2225), 1708 states have internal predecessors, (2225), 220 states have call successors, (220), 140 states have call predecessors, (220), 178 states have return successors, (278), 236 states have call predecessors, (278), 216 states have call successors, (278) [2022-11-21 17:06:11,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2082 states to 2082 states and 2723 transitions. [2022-11-21 17:06:11,755 INFO L78 Accepts]: Start accepts. Automaton has 2082 states and 2723 transitions. Word has length 91 [2022-11-21 17:06:11,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:11,756 INFO L495 AbstractCegarLoop]: Abstraction has 2082 states and 2723 transitions. [2022-11-21 17:06:11,756 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.0) internal successors, (70), 4 states have internal predecessors, (70), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2022-11-21 17:06:11,757 INFO L276 IsEmpty]: Start isEmpty. Operand 2082 states and 2723 transitions. [2022-11-21 17:06:11,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-21 17:06:11,758 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:11,758 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:11,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-21 17:06:11,759 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:11,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:11,759 INFO L85 PathProgramCache]: Analyzing trace with hash -721573211, now seen corresponding path program 1 times [2022-11-21 17:06:11,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:11,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1638220426] [2022-11-21 17:06:11,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:11,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:11,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:06:11,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:06:11,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:11,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:06:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:06:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:06:11,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 17:06:11,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:11,943 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-21 17:06:11,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:11,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1638220426] [2022-11-21 17:06:11,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1638220426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:11,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:11,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-21 17:06:11,944 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241371048] [2022-11-21 17:06:11,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:11,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 17:06:11,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:11,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 17:06:11,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:06:11,946 INFO L87 Difference]: Start difference. First operand 2082 states and 2723 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) [2022-11-21 17:06:14,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:14,053 INFO L93 Difference]: Finished difference Result 4891 states and 6302 transitions. [2022-11-21 17:06:14,054 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-21 17:06:14,054 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 92 [2022-11-21 17:06:14,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:14,067 INFO L225 Difference]: With dead ends: 4891 [2022-11-21 17:06:14,067 INFO L226 Difference]: Without dead ends: 2896 [2022-11-21 17:06:14,072 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 226 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-21 17:06:14,074 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 2139 mSDsluCounter, 1902 mSDsCounter, 0 mSdLazyCounter, 1860 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2184 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 2235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 1860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:14,079 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2184 Valid, 2337 Invalid, 2235 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 1860 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-21 17:06:14,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2896 states. [2022-11-21 17:06:14,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2896 to 2719. [2022-11-21 17:06:14,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2719 states, 2160 states have (on average 1.2819444444444446) internal successors, (2769), 2195 states have internal predecessors, (2769), 299 states have call successors, (299), 189 states have call predecessors, (299), 258 states have return successors, (414), 337 states have call predecessors, (414), 295 states have call successors, (414) [2022-11-21 17:06:14,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2719 states to 2719 states and 3482 transitions. [2022-11-21 17:06:14,348 INFO L78 Accepts]: Start accepts. Automaton has 2719 states and 3482 transitions. Word has length 92 [2022-11-21 17:06:14,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:14,348 INFO L495 AbstractCegarLoop]: Abstraction has 2719 states and 3482 transitions. [2022-11-21 17:06:14,348 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) [2022-11-21 17:06:14,348 INFO L276 IsEmpty]: Start isEmpty. Operand 2719 states and 3482 transitions. [2022-11-21 17:06:14,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-11-21 17:06:14,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:14,352 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:14,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-21 17:06:14,353 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:14,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:14,353 INFO L85 PathProgramCache]: Analyzing trace with hash 2110123202, now seen corresponding path program 1 times [2022-11-21 17:06:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:14,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [225178123] [2022-11-21 17:06:14,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:14,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:14,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-21 17:06:14,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-21 17:06:14,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:14,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-21 17:06:14,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-21 17:06:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-21 17:06:14,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-21 17:06:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-11-21 17:06:14,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-11-21 17:06:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-11-21 17:06:14,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-21 17:06:14,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-21 17:06:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-21 17:06:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-11-21 17:06:14,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-11-21 17:06:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-11-21 17:06:14,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 23 proven. 9 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-21 17:06:14,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:14,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [225178123] [2022-11-21 17:06:14,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [225178123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 17:06:14,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1309609986] [2022-11-21 17:06:14,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:14,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 17:06:14,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 17:06:14,741 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 17:06:14,779 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 17:06:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:14,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 632 conjuncts, 2 conjunts are in the unsatisfiable core [2022-11-21 17:06:14,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 17:06:15,162 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-11-21 17:06:15,163 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 17:06:15,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1309609986] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:15,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 17:06:15,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [10] total 11 [2022-11-21 17:06:15,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152646971] [2022-11-21 17:06:15,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:15,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-21 17:06:15,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:15,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-21 17:06:15,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:06:15,179 INFO L87 Difference]: Start difference. First operand 2719 states and 3482 transitions. Second operand has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 17:06:15,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:15,556 INFO L93 Difference]: Finished difference Result 7014 states and 8763 transitions. [2022-11-21 17:06:15,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-21 17:06:15,556 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 163 [2022-11-21 17:06:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:15,576 INFO L225 Difference]: With dead ends: 7014 [2022-11-21 17:06:15,576 INFO L226 Difference]: Without dead ends: 4841 [2022-11-21 17:06:15,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 194 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:06:15,583 INFO L413 NwaCegarLoop]: 798 mSDtfsCounter, 61 mSDsluCounter, 727 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 1525 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:15,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 1525 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-11-21 17:06:15,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4841 states. [2022-11-21 17:06:15,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4841 to 4796. [2022-11-21 17:06:15,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 3773 states have (on average 1.2467532467532467) internal successors, (4704), 3836 states have internal predecessors, (4704), 532 states have call successors, (532), 370 states have call predecessors, (532), 489 states have return successors, (718), 592 states have call predecessors, (718), 528 states have call successors, (718) [2022-11-21 17:06:15,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5954 transitions. [2022-11-21 17:06:16,001 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5954 transitions. Word has length 163 [2022-11-21 17:06:16,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:16,002 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 5954 transitions. [2022-11-21 17:06:16,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 36.0) internal successors, (108), 3 states have internal predecessors, (108), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-21 17:06:16,003 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5954 transitions. [2022-11-21 17:06:16,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:16,007 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:16,008 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:16,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 17:06:16,213 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ecb25008-50d2-4ccb-8cf6-a70bf746b7f5/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 17:06:16,214 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:16,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:16,215 INFO L85 PathProgramCache]: Analyzing trace with hash -174258653, now seen corresponding path program 1 times [2022-11-21 17:06:16,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:16,215 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442684394] [2022-11-21 17:06:16,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:16,215 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:16,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:16,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:16,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:16,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:16,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:16,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:16,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:16,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:16,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:16,404 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442684394] [2022-11-21 17:06:16,404 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442684394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:16,405 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:16,405 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:06:16,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894974336] [2022-11-21 17:06:16,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:16,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:06:16,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:16,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:06:16,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:06:16,407 INFO L87 Difference]: Start difference. First operand 4796 states and 5954 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:19,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:19,855 INFO L93 Difference]: Finished difference Result 5314 states and 6794 transitions. [2022-11-21 17:06:19,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:06:19,856 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:06:19,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:19,886 INFO L225 Difference]: With dead ends: 5314 [2022-11-21 17:06:19,887 INFO L226 Difference]: Without dead ends: 4938 [2022-11-21 17:06:19,890 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:06:19,890 INFO L413 NwaCegarLoop]: 436 mSDtfsCounter, 1154 mSDsluCounter, 593 mSDsCounter, 0 mSdLazyCounter, 1191 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1178 SdHoareTripleChecker+Valid, 1029 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1191 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:19,891 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1178 Valid, 1029 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1191 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-21 17:06:19,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2022-11-21 17:06:20,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4796. [2022-11-21 17:06:20,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 3773 states have (on average 1.2464882056718791) internal successors, (4703), 3836 states have internal predecessors, (4703), 532 states have call successors, (532), 370 states have call predecessors, (532), 489 states have return successors, (718), 592 states have call predecessors, (718), 528 states have call successors, (718) [2022-11-21 17:06:20,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5953 transitions. [2022-11-21 17:06:20,871 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5953 transitions. Word has length 179 [2022-11-21 17:06:20,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:20,871 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 5953 transitions. [2022-11-21 17:06:20,872 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:20,873 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5953 transitions. [2022-11-21 17:06:20,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:20,878 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:20,878 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:20,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-21 17:06:20,879 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:20,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:20,879 INFO L85 PathProgramCache]: Analyzing trace with hash -822851423, now seen corresponding path program 1 times [2022-11-21 17:06:20,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:20,880 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563142577] [2022-11-21 17:06:20,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:20,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:20,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:20,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:21,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:21,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:21,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:21,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:21,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:21,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:21,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563142577] [2022-11-21 17:06:21,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [563142577] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:21,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:21,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 17:06:21,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498708510] [2022-11-21 17:06:21,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:21,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 17:06:21,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:21,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 17:06:21,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-21 17:06:21,112 INFO L87 Difference]: Start difference. First operand 4796 states and 5953 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:24,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:24,274 INFO L93 Difference]: Finished difference Result 5306 states and 6777 transitions. [2022-11-21 17:06:24,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:06:24,275 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:06:24,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:24,295 INFO L225 Difference]: With dead ends: 5306 [2022-11-21 17:06:24,295 INFO L226 Difference]: Without dead ends: 4938 [2022-11-21 17:06:24,298 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-21 17:06:24,299 INFO L413 NwaCegarLoop]: 435 mSDtfsCounter, 1145 mSDsluCounter, 592 mSDsCounter, 0 mSdLazyCounter, 1190 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 1027 SdHoareTripleChecker+Invalid, 1286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 1190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:24,300 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 1027 Invalid, 1286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 1190 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-21 17:06:24,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4938 states. [2022-11-21 17:06:25,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4938 to 4796. [2022-11-21 17:06:25,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4796 states, 3773 states have (on average 1.2462231645905115) internal successors, (4702), 3836 states have internal predecessors, (4702), 532 states have call successors, (532), 370 states have call predecessors, (532), 489 states have return successors, (718), 592 states have call predecessors, (718), 528 states have call successors, (718) [2022-11-21 17:06:25,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4796 states to 4796 states and 5952 transitions. [2022-11-21 17:06:25,270 INFO L78 Accepts]: Start accepts. Automaton has 4796 states and 5952 transitions. Word has length 179 [2022-11-21 17:06:25,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:25,270 INFO L495 AbstractCegarLoop]: Abstraction has 4796 states and 5952 transitions. [2022-11-21 17:06:25,271 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, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:25,271 INFO L276 IsEmpty]: Start isEmpty. Operand 4796 states and 5952 transitions. [2022-11-21 17:06:25,276 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:25,276 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:25,277 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:25,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-21 17:06:25,277 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:25,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:25,278 INFO L85 PathProgramCache]: Analyzing trace with hash -1321408225, now seen corresponding path program 1 times [2022-11-21 17:06:25,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:25,278 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561046116] [2022-11-21 17:06:25,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:25,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:25,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:25,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:25,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:25,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:25,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:25,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:25,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:25,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:25,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:25,598 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:25,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:25,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561046116] [2022-11-21 17:06:25,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561046116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:25,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:25,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 17:06:25,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [835460627] [2022-11-21 17:06:25,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:25,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 17:06:25,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:25,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 17:06:25,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 17:06:25,602 INFO L87 Difference]: Start difference. First operand 4796 states and 5952 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:30,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:30,764 INFO L93 Difference]: Finished difference Result 5822 states and 7615 transitions. [2022-11-21 17:06:30,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 17:06:30,765 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:06:30,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:30,787 INFO L225 Difference]: With dead ends: 5822 [2022-11-21 17:06:30,787 INFO L226 Difference]: Without dead ends: 5460 [2022-11-21 17:06:30,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-21 17:06:30,792 INFO L413 NwaCegarLoop]: 428 mSDtfsCounter, 1816 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1847 SdHoareTripleChecker+Valid, 1572 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:30,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1847 Valid, 1572 Invalid, 2710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-21 17:06:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5460 states. [2022-11-21 17:06:31,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5460 to 5175. [2022-11-21 17:06:31,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5175 states, 4124 states have (on average 1.2764306498545102) internal successors, (5264), 4188 states have internal predecessors, (5264), 553 states have call successors, (553), 376 states have call predecessors, (553), 496 states have return successors, (742), 613 states have call predecessors, (742), 549 states have call successors, (742) [2022-11-21 17:06:31,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5175 states to 5175 states and 6559 transitions. [2022-11-21 17:06:31,720 INFO L78 Accepts]: Start accepts. Automaton has 5175 states and 6559 transitions. Word has length 179 [2022-11-21 17:06:31,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:31,720 INFO L495 AbstractCegarLoop]: Abstraction has 5175 states and 6559 transitions. [2022-11-21 17:06:31,721 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:31,721 INFO L276 IsEmpty]: Start isEmpty. Operand 5175 states and 6559 transitions. [2022-11-21 17:06:31,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:31,725 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:31,726 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:31,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-21 17:06:31,726 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:31,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:31,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1587819291, now seen corresponding path program 1 times [2022-11-21 17:06:31,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:31,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488386510] [2022-11-21 17:06:31,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:31,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:31,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:31,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:31,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:31,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:32,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:32,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:32,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:32,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:32,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:32,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:32,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:32,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:32,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:32,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488386510] [2022-11-21 17:06:32,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488386510] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:32,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:32,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:06:32,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1940329982] [2022-11-21 17:06:32,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:32,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:06:32,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:32,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:06:32,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:06:32,117 INFO L87 Difference]: Start difference. First operand 5175 states and 6559 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:38,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:38,255 INFO L93 Difference]: Finished difference Result 6743 states and 9107 transitions. [2022-11-21 17:06:38,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:06:38,256 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:06:38,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:38,281 INFO L225 Difference]: With dead ends: 6743 [2022-11-21 17:06:38,282 INFO L226 Difference]: Without dead ends: 6002 [2022-11-21 17:06:38,287 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 [2022-11-21 17:06:38,287 INFO L413 NwaCegarLoop]: 638 mSDtfsCounter, 1855 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 3861 mSolverCounterSat, 108 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 2794 SdHoareTripleChecker+Invalid, 3969 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 108 IncrementalHoareTripleChecker+Valid, 3861 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:38,288 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 2794 Invalid, 3969 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [108 Valid, 3861 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 17:06:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6002 states. [2022-11-21 17:06:39,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6002 to 5528. [2022-11-21 17:06:39,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 4449 states have (on average 1.2978197347718587) internal successors, (5774), 4514 states have internal predecessors, (5774), 574 states have call successors, (574), 382 states have call predecessors, (574), 503 states have return successors, (765), 635 states have call predecessors, (765), 570 states have call successors, (765) [2022-11-21 17:06:39,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 7113 transitions. [2022-11-21 17:06:39,148 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 7113 transitions. Word has length 179 [2022-11-21 17:06:39,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:39,148 INFO L495 AbstractCegarLoop]: Abstraction has 5528 states and 7113 transitions. [2022-11-21 17:06:39,148 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:39,149 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 7113 transitions. [2022-11-21 17:06:39,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:39,153 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:39,154 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:39,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-21 17:06:39,154 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:39,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:39,155 INFO L85 PathProgramCache]: Analyzing trace with hash 976550233, now seen corresponding path program 1 times [2022-11-21 17:06:39,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:39,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [357464629] [2022-11-21 17:06:39,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:39,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:39,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:39,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:39,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:39,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:39,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:39,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:39,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:39,462 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:39,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:39,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [357464629] [2022-11-21 17:06:39,463 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [357464629] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:39,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:39,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:06:39,465 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114923983] [2022-11-21 17:06:39,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:39,466 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:06:39,466 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:39,467 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:06:39,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:06:39,467 INFO L87 Difference]: Start difference. First operand 5528 states and 7113 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:43,131 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:43,131 INFO L93 Difference]: Finished difference Result 7112 states and 9699 transitions. [2022-11-21 17:06:43,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:06:43,132 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:06:43,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:43,165 INFO L225 Difference]: With dead ends: 7112 [2022-11-21 17:06:43,165 INFO L226 Difference]: Without dead ends: 6018 [2022-11-21 17:06:43,176 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 [2022-11-21 17:06:43,176 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1382 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2043 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1414 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 2154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2043 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:43,177 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1414 Valid, 1566 Invalid, 2154 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2043 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:06:43,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6018 states. [2022-11-21 17:06:44,167 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6018 to 5528. [2022-11-21 17:06:44,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 4449 states have (on average 1.2971454259384132) internal successors, (5771), 4514 states have internal predecessors, (5771), 574 states have call successors, (574), 382 states have call predecessors, (574), 503 states have return successors, (765), 635 states have call predecessors, (765), 570 states have call successors, (765) [2022-11-21 17:06:44,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 7110 transitions. [2022-11-21 17:06:44,190 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 7110 transitions. Word has length 179 [2022-11-21 17:06:44,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:44,191 INFO L495 AbstractCegarLoop]: Abstraction has 5528 states and 7110 transitions. [2022-11-21 17:06:44,191 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:44,191 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 7110 transitions. [2022-11-21 17:06:44,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:44,196 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:44,196 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:44,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-21 17:06:44,197 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:44,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:44,197 INFO L85 PathProgramCache]: Analyzing trace with hash -428641445, now seen corresponding path program 1 times [2022-11-21 17:06:44,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:44,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [794383494] [2022-11-21 17:06:44,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:44,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:44,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:44,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:44,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:44,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:44,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:44,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:44,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:44,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:44,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:44,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:44,453 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:44,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:44,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [794383494] [2022-11-21 17:06:44,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [794383494] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:44,454 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:44,454 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:06:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531955834] [2022-11-21 17:06:44,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:44,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:06:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:06:44,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:06:44,456 INFO L87 Difference]: Start difference. First operand 5528 states and 7110 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:48,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:48,378 INFO L93 Difference]: Finished difference Result 7108 states and 9682 transitions. [2022-11-21 17:06:48,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:06:48,379 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:06:48,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:48,399 INFO L225 Difference]: With dead ends: 7108 [2022-11-21 17:06:48,399 INFO L226 Difference]: Without dead ends: 6014 [2022-11-21 17:06:48,406 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 [2022-11-21 17:06:48,407 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1380 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2027 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1412 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 2138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2027 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:48,407 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1412 Valid, 1566 Invalid, 2138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2027 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-21 17:06:48,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6014 states. [2022-11-21 17:06:49,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6014 to 5528. [2022-11-21 17:06:49,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5528 states, 4449 states have (on average 1.2964711171049674) internal successors, (5768), 4514 states have internal predecessors, (5768), 574 states have call successors, (574), 382 states have call predecessors, (574), 503 states have return successors, (765), 635 states have call predecessors, (765), 570 states have call successors, (765) [2022-11-21 17:06:49,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5528 states to 5528 states and 7107 transitions. [2022-11-21 17:06:49,183 INFO L78 Accepts]: Start accepts. Automaton has 5528 states and 7107 transitions. Word has length 179 [2022-11-21 17:06:49,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:49,184 INFO L495 AbstractCegarLoop]: Abstraction has 5528 states and 7107 transitions. [2022-11-21 17:06:49,184 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:49,184 INFO L276 IsEmpty]: Start isEmpty. Operand 5528 states and 7107 transitions. [2022-11-21 17:06:49,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:49,189 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:49,189 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:49,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-21 17:06:49,190 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:49,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:49,190 INFO L85 PathProgramCache]: Analyzing trace with hash 1465692441, now seen corresponding path program 1 times [2022-11-21 17:06:49,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:49,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445728729] [2022-11-21 17:06:49,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:49,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:49,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:49,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:49,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:49,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:49,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:49,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:49,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:49,469 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:49,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:49,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445728729] [2022-11-21 17:06:49,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445728729] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:49,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:49,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:06:49,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834203296] [2022-11-21 17:06:49,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:49,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:06:49,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:49,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:06:49,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:06:49,472 INFO L87 Difference]: Start difference. First operand 5528 states and 7107 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:55,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:06:55,721 INFO L93 Difference]: Finished difference Result 8091 states and 11237 transitions. [2022-11-21 17:06:55,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:06:55,722 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:06:55,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:06:55,747 INFO L225 Difference]: With dead ends: 8091 [2022-11-21 17:06:55,747 INFO L226 Difference]: Without dead ends: 6997 [2022-11-21 17:06:55,753 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 [2022-11-21 17:06:55,754 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 1836 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1867 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 3896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:06:55,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1867 Valid, 2792 Invalid, 3896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-11-21 17:06:55,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6997 states. [2022-11-21 17:06:56,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6997 to 6243. [2022-11-21 17:06:56,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6243 states, 5108 states have (on average 1.3306577916992952) internal successors, (6797), 5175 states have internal predecessors, (6797), 616 states have call successors, (616), 394 states have call predecessors, (616), 517 states have return successors, (815), 679 states have call predecessors, (815), 612 states have call successors, (815) [2022-11-21 17:06:56,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6243 states to 6243 states and 8228 transitions. [2022-11-21 17:06:56,773 INFO L78 Accepts]: Start accepts. Automaton has 6243 states and 8228 transitions. Word has length 179 [2022-11-21 17:06:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:06:56,773 INFO L495 AbstractCegarLoop]: Abstraction has 6243 states and 8228 transitions. [2022-11-21 17:06:56,773 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:06:56,774 INFO L276 IsEmpty]: Start isEmpty. Operand 6243 states and 8228 transitions. [2022-11-21 17:06:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:06:56,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:06:56,779 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:06:56,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-21 17:06:56,779 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:06:56,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:06:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -1382693989, now seen corresponding path program 1 times [2022-11-21 17:06:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:06:56,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090325143] [2022-11-21 17:06:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:06:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:06:56,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:56,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:06:56,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:56,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:06:56,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:56,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:06:57,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:57,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:06:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:57,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:06:57,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:06:57,030 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:06:57,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:06:57,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090325143] [2022-11-21 17:06:57,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090325143] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:06:57,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:06:57,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:06:57,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [50912886] [2022-11-21 17:06:57,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:06:57,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:06:57,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:06:57,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:06:57,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:06:57,033 INFO L87 Difference]: Start difference. First operand 6243 states and 8228 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:00,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:00,719 INFO L93 Difference]: Finished difference Result 8792 states and 12345 transitions. [2022-11-21 17:07:00,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:07:00,720 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:00,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:00,745 INFO L225 Difference]: With dead ends: 8792 [2022-11-21 17:07:00,745 INFO L226 Difference]: Without dead ends: 6983 [2022-11-21 17:07:00,752 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 [2022-11-21 17:07:00,753 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1379 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 2001 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1411 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 2112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 2001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:00,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1411 Valid, 1566 Invalid, 2112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 2001 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-21 17:07:00,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6983 states. [2022-11-21 17:07:01,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6983 to 6243. [2022-11-21 17:07:01,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6243 states, 5108 states have (on average 1.3296789350039153) internal successors, (6792), 5175 states have internal predecessors, (6792), 616 states have call successors, (616), 394 states have call predecessors, (616), 517 states have return successors, (815), 679 states have call predecessors, (815), 612 states have call successors, (815) [2022-11-21 17:07:01,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6243 states to 6243 states and 8223 transitions. [2022-11-21 17:07:01,942 INFO L78 Accepts]: Start accepts. Automaton has 6243 states and 8223 transitions. Word has length 179 [2022-11-21 17:07:01,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:01,942 INFO L495 AbstractCegarLoop]: Abstraction has 6243 states and 8223 transitions. [2022-11-21 17:07:01,942 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:01,942 INFO L276 IsEmpty]: Start isEmpty. Operand 6243 states and 8223 transitions. [2022-11-21 17:07:01,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:01,947 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:01,948 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:01,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-21 17:07:01,948 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:01,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:01,949 INFO L85 PathProgramCache]: Analyzing trace with hash 1989105881, now seen corresponding path program 1 times [2022-11-21 17:07:01,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:01,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [70124212] [2022-11-21 17:07:01,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:01,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:02,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:02,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:02,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:02,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:02,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:02,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:02,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:02,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:02,239 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:02,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:02,240 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [70124212] [2022-11-21 17:07:02,240 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [70124212] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:02,241 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:02,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:02,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212557295] [2022-11-21 17:07:02,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:02,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:02,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:02,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:02,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:02,244 INFO L87 Difference]: Start difference. First operand 6243 states and 8223 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:08,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:08,488 INFO L93 Difference]: Finished difference Result 10702 states and 15350 transitions. [2022-11-21 17:07:08,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:07:08,489 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:08,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:08,518 INFO L225 Difference]: With dead ends: 10702 [2022-11-21 17:07:08,518 INFO L226 Difference]: Without dead ends: 8893 [2022-11-21 17:07:08,526 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 [2022-11-21 17:07:08,527 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1927 mSDsluCounter, 1483 mSDsCounter, 0 mSdLazyCounter, 3366 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1958 SdHoareTripleChecker+Valid, 1908 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3366 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:08,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1958 Valid, 1908 Invalid, 3522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3366 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-21 17:07:08,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2022-11-21 17:07:09,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 7677. [2022-11-21 17:07:09,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.376049766718507) internal successors, (8848), 6501 states have internal predecessors, (8848), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-11-21 17:07:09,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10469 transitions. [2022-11-21 17:07:09,682 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10469 transitions. Word has length 179 [2022-11-21 17:07:09,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:09,682 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10469 transitions. [2022-11-21 17:07:09,683 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:09,683 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10469 transitions. [2022-11-21 17:07:09,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:09,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:09,690 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:09,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-21 17:07:09,691 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:09,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:09,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1919999013, now seen corresponding path program 1 times [2022-11-21 17:07:09,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:09,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2124543847] [2022-11-21 17:07:09,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:09,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:09,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:09,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:09,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:09,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:09,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:09,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:09,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:09,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:09,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:09,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:09,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:09,942 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:09,942 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2124543847] [2022-11-21 17:07:09,942 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2124543847] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:09,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:09,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:09,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591006582] [2022-11-21 17:07:09,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:09,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:09,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:09,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:09,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:09,944 INFO L87 Difference]: Start difference. First operand 7677 states and 10469 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:13,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:13,603 INFO L93 Difference]: Finished difference Result 12156 states and 17664 transitions. [2022-11-21 17:07:13,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:07:13,603 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:13,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:13,631 INFO L225 Difference]: With dead ends: 12156 [2022-11-21 17:07:13,632 INFO L226 Difference]: Without dead ends: 8913 [2022-11-21 17:07:13,642 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 [2022-11-21 17:07:13,643 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1606 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1797 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1638 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1954 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:13,643 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1638 Valid, 1308 Invalid, 1954 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1797 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-21 17:07:13,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8913 states. [2022-11-21 17:07:14,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8913 to 7677. [2022-11-21 17:07:14,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.3746500777604977) internal successors, (8839), 6501 states have internal predecessors, (8839), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-11-21 17:07:14,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10460 transitions. [2022-11-21 17:07:14,967 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10460 transitions. Word has length 179 [2022-11-21 17:07:14,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:14,967 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10460 transitions. [2022-11-21 17:07:14,967 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:14,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10460 transitions. [2022-11-21 17:07:14,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:14,972 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:14,972 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:14,972 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-21 17:07:14,972 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:14,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:14,973 INFO L85 PathProgramCache]: Analyzing trace with hash 2110320793, now seen corresponding path program 1 times [2022-11-21 17:07:14,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:14,973 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280584394] [2022-11-21 17:07:14,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:14,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:14,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:15,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:15,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:15,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:15,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:15,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:15,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:15,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:15,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:15,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:15,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:15,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280584394] [2022-11-21 17:07:15,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280584394] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:15,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:15,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:15,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374190415] [2022-11-21 17:07:15,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:15,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:15,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:15,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:15,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:15,234 INFO L87 Difference]: Start difference. First operand 7677 states and 10460 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:19,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:19,044 INFO L93 Difference]: Finished difference Result 12136 states and 17597 transitions. [2022-11-21 17:07:19,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:07:19,044 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:19,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:19,068 INFO L225 Difference]: With dead ends: 12136 [2022-11-21 17:07:19,068 INFO L226 Difference]: Without dead ends: 8893 [2022-11-21 17:07:19,080 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 [2022-11-21 17:07:19,081 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1602 mSDsluCounter, 930 mSDsCounter, 0 mSdLazyCounter, 1777 mSolverCounterSat, 157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1634 SdHoareTripleChecker+Valid, 1308 SdHoareTripleChecker+Invalid, 1934 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 157 IncrementalHoareTripleChecker+Valid, 1777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:19,081 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1634 Valid, 1308 Invalid, 1934 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [157 Valid, 1777 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-21 17:07:19,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8893 states. [2022-11-21 17:07:20,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8893 to 7677. [2022-11-21 17:07:20,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.3732503888024883) internal successors, (8830), 6501 states have internal predecessors, (8830), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-11-21 17:07:20,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10451 transitions. [2022-11-21 17:07:20,393 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10451 transitions. Word has length 179 [2022-11-21 17:07:20,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:20,394 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10451 transitions. [2022-11-21 17:07:20,394 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:20,394 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10451 transitions. [2022-11-21 17:07:20,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:20,400 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:20,401 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:20,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-21 17:07:20,401 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:20,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:20,402 INFO L85 PathProgramCache]: Analyzing trace with hash 787141847, now seen corresponding path program 1 times [2022-11-21 17:07:20,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:20,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659136638] [2022-11-21 17:07:20,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:20,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:20,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:20,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:20,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:20,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:20,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:20,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:20,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:20,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:20,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:20,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [659136638] [2022-11-21 17:07:20,648 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [659136638] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:20,648 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:20,648 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:20,648 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652844476] [2022-11-21 17:07:20,648 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:20,649 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:20,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:20,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:20,650 INFO L87 Difference]: Start difference. First operand 7677 states and 10451 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:24,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:24,704 INFO L93 Difference]: Finished difference Result 12126 states and 17550 transitions. [2022-11-21 17:07:24,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:07:24,705 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:24,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:24,728 INFO L225 Difference]: With dead ends: 12126 [2022-11-21 17:07:24,728 INFO L226 Difference]: Without dead ends: 8883 [2022-11-21 17:07:24,738 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 [2022-11-21 17:07:24,739 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1378 mSDsluCounter, 1188 mSDsCounter, 0 mSdLazyCounter, 1930 mSolverCounterSat, 111 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1410 SdHoareTripleChecker+Valid, 1566 SdHoareTripleChecker+Invalid, 2041 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 111 IncrementalHoareTripleChecker+Valid, 1930 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:24,740 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1410 Valid, 1566 Invalid, 2041 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [111 Valid, 1930 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:07:24,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8883 states. [2022-11-21 17:07:25,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8883 to 7677. [2022-11-21 17:07:25,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7677 states, 6430 states have (on average 1.371850699844479) internal successors, (8821), 6501 states have internal predecessors, (8821), 700 states have call successors, (700), 418 states have call predecessors, (700), 545 states have return successors, (921), 767 states have call predecessors, (921), 696 states have call successors, (921) [2022-11-21 17:07:25,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7677 states to 7677 states and 10442 transitions. [2022-11-21 17:07:25,987 INFO L78 Accepts]: Start accepts. Automaton has 7677 states and 10442 transitions. Word has length 179 [2022-11-21 17:07:25,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:25,987 INFO L495 AbstractCegarLoop]: Abstraction has 7677 states and 10442 transitions. [2022-11-21 17:07:25,987 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:25,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7677 states and 10442 transitions. [2022-11-21 17:07:25,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:25,993 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:25,993 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:25,994 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-21 17:07:25,994 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:25,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:25,994 INFO L85 PathProgramCache]: Analyzing trace with hash -1610845991, now seen corresponding path program 1 times [2022-11-21 17:07:25,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:25,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092739546] [2022-11-21 17:07:25,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:25,995 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:26,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:26,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:26,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:26,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:26,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:26,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:26,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:26,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:26,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:26,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:26,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092739546] [2022-11-21 17:07:26,257 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092739546] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:26,257 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:26,257 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:26,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805725143] [2022-11-21 17:07:26,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:26,258 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:26,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:26,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:26,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:26,259 INFO L87 Difference]: Start difference. First operand 7677 states and 10442 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:33,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:33,659 INFO L93 Difference]: Finished difference Result 15894 states and 23426 transitions. [2022-11-21 17:07:33,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-21 17:07:33,660 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:33,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:33,690 INFO L225 Difference]: With dead ends: 15894 [2022-11-21 17:07:33,691 INFO L226 Difference]: Without dead ends: 12651 [2022-11-21 17:07:33,702 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 [2022-11-21 17:07:33,703 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 1808 mSDsluCounter, 2156 mSDsCounter, 0 mSdLazyCounter, 3641 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1839 SdHoareTripleChecker+Valid, 2792 SdHoareTripleChecker+Invalid, 3751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 3641 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:33,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1839 Valid, 2792 Invalid, 3751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 3641 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-11-21 17:07:33,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12651 states. [2022-11-21 17:07:35,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12651 to 10586. [2022-11-21 17:07:35,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10586 states, 9115 states have (on average 1.422161272627537) internal successors, (12963), 9194 states have internal predecessors, (12963), 868 states have call successors, (868), 466 states have call predecessors, (868), 601 states have return successors, (1151), 943 states have call predecessors, (1151), 864 states have call successors, (1151) [2022-11-21 17:07:35,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10586 states to 10586 states and 14982 transitions. [2022-11-21 17:07:35,451 INFO L78 Accepts]: Start accepts. Automaton has 10586 states and 14982 transitions. Word has length 179 [2022-11-21 17:07:35,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:35,451 INFO L495 AbstractCegarLoop]: Abstraction has 10586 states and 14982 transitions. [2022-11-21 17:07:35,452 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:35,452 INFO L276 IsEmpty]: Start isEmpty. Operand 10586 states and 14982 transitions. [2022-11-21 17:07:35,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:35,459 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:35,459 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:35,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-21 17:07:35,459 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:35,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:35,460 INFO L85 PathProgramCache]: Analyzing trace with hash -1272558441, now seen corresponding path program 1 times [2022-11-21 17:07:35,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:35,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258826653] [2022-11-21 17:07:35,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:35,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:35,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:35,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:35,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:35,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:35,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:35,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:35,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:35,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:35,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:35,711 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:35,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:35,712 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258826653] [2022-11-21 17:07:35,712 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258826653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:35,712 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:35,712 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:35,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504597336] [2022-11-21 17:07:35,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:35,713 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:35,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:35,714 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:35,714 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:35,714 INFO L87 Difference]: Start difference. First operand 10586 states and 14982 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:41,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:41,297 INFO L93 Difference]: Finished difference Result 18860 states and 28153 transitions. [2022-11-21 17:07:41,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 17:07:41,298 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:41,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:41,326 INFO L225 Difference]: With dead ends: 18860 [2022-11-21 17:07:41,326 INFO L226 Difference]: Without dead ends: 12708 [2022-11-21 17:07:41,339 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 [2022-11-21 17:07:41,340 INFO L413 NwaCegarLoop]: 378 mSDtfsCounter, 1375 mSDsluCounter, 1186 mSDsCounter, 0 mSdLazyCounter, 1906 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1407 SdHoareTripleChecker+Valid, 1564 SdHoareTripleChecker+Invalid, 2019 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:41,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1407 Valid, 1564 Invalid, 2019 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1906 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-21 17:07:41,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12708 states. [2022-11-21 17:07:43,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12708 to 10586. [2022-11-21 17:07:43,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10586 states, 9115 states have (on average 1.4202962150301701) internal successors, (12946), 9194 states have internal predecessors, (12946), 868 states have call successors, (868), 466 states have call predecessors, (868), 601 states have return successors, (1151), 943 states have call predecessors, (1151), 864 states have call successors, (1151) [2022-11-21 17:07:43,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10586 states to 10586 states and 14965 transitions. [2022-11-21 17:07:43,344 INFO L78 Accepts]: Start accepts. Automaton has 10586 states and 14965 transitions. Word has length 179 [2022-11-21 17:07:43,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:43,345 INFO L495 AbstractCegarLoop]: Abstraction has 10586 states and 14965 transitions. [2022-11-21 17:07:43,345 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 10586 states and 14965 transitions. [2022-11-21 17:07:43,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:43,352 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:43,352 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:43,352 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-11-21 17:07:43,352 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:43,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:43,353 INFO L85 PathProgramCache]: Analyzing trace with hash -846003943, now seen corresponding path program 1 times [2022-11-21 17:07:43,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:43,353 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350798994] [2022-11-21 17:07:43,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:43,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:43,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:43,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:43,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:43,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:43,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:43,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:43,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:43,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:43,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:43,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350798994] [2022-11-21 17:07:43,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350798994] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:43,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:43,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:43,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1321354438] [2022-11-21 17:07:43,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:43,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:43,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:43,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:43,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:43,626 INFO L87 Difference]: Start difference. First operand 10586 states and 14965 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:55,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:07:55,334 INFO L93 Difference]: Finished difference Result 28983 states and 43886 transitions. [2022-11-21 17:07:55,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:07:55,335 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:07:55,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:07:55,383 INFO L225 Difference]: With dead ends: 28983 [2022-11-21 17:07:55,384 INFO L226 Difference]: Without dead ends: 22831 [2022-11-21 17:07:55,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-21 17:07:55,398 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 2246 mSDsluCounter, 2145 mSDsCounter, 0 mSdLazyCounter, 3595 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2290 SdHoareTripleChecker+Valid, 2778 SdHoareTripleChecker+Invalid, 3710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3595 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:07:55,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2290 Valid, 2778 Invalid, 3710 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3595 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 17:07:55,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22831 states. [2022-11-21 17:07:58,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22831 to 16252. [2022-11-21 17:07:58,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16252 states, 14349 states have (on average 1.4622621785490277) internal successors, (20982), 14444 states have internal predecessors, (20982), 1188 states have call successors, (1188), 562 states have call predecessors, (1188), 713 states have return successors, (1649), 1279 states have call predecessors, (1649), 1184 states have call successors, (1649) [2022-11-21 17:07:58,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16252 states to 16252 states and 23819 transitions. [2022-11-21 17:07:58,888 INFO L78 Accepts]: Start accepts. Automaton has 16252 states and 23819 transitions. Word has length 179 [2022-11-21 17:07:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:07:58,889 INFO L495 AbstractCegarLoop]: Abstraction has 16252 states and 23819 transitions. [2022-11-21 17:07:58,889 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:07:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 16252 states and 23819 transitions. [2022-11-21 17:07:58,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:07:58,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:07:58,897 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:07:58,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-11-21 17:07:58,898 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:07:58,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:07:58,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1386433449, now seen corresponding path program 1 times [2022-11-21 17:07:58,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:07:58,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369979469] [2022-11-21 17:07:58,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:07:58,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:07:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:07:59,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:59,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:07:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:59,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:07:59,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:59,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:07:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:59,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:07:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:07:59,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:07:59,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:07:59,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369979469] [2022-11-21 17:07:59,172 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369979469] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:07:59,172 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:07:59,172 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:07:59,172 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1386702513] [2022-11-21 17:07:59,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:07:59,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:07:59,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:07:59,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:07:59,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:07:59,174 INFO L87 Difference]: Start difference. First operand 16252 states and 23819 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:08:17,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:17,019 INFO L93 Difference]: Finished difference Result 51607 states and 79510 transitions. [2022-11-21 17:08:17,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:08:17,019 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:08:17,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:17,126 INFO L225 Difference]: With dead ends: 51607 [2022-11-21 17:08:17,126 INFO L226 Difference]: Without dead ends: 39789 [2022-11-21 17:08:17,160 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 [2022-11-21 17:08:17,161 INFO L413 NwaCegarLoop]: 425 mSDtfsCounter, 1985 mSDsluCounter, 1479 mSDsCounter, 0 mSdLazyCounter, 3943 mSolverCounterSat, 156 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2015 SdHoareTripleChecker+Valid, 1904 SdHoareTripleChecker+Invalid, 4099 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 156 IncrementalHoareTripleChecker+Valid, 3943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:17,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2015 Valid, 1904 Invalid, 4099 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [156 Valid, 3943 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-21 17:08:17,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39789 states. [2022-11-21 17:08:23,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39789 to 27693. [2022-11-21 17:08:23,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27693 states, 24942 states have (on average 1.494988373025419) internal successors, (37288), 25069 states have internal predecessors, (37288), 1812 states have call successors, (1812), 754 states have call predecessors, (1812), 937 states have return successors, (2791), 1935 states have call predecessors, (2791), 1808 states have call successors, (2791) [2022-11-21 17:08:23,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27693 states to 27693 states and 41891 transitions. [2022-11-21 17:08:23,820 INFO L78 Accepts]: Start accepts. Automaton has 27693 states and 41891 transitions. Word has length 179 [2022-11-21 17:08:23,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-21 17:08:23,821 INFO L495 AbstractCegarLoop]: Abstraction has 27693 states and 41891 transitions. [2022-11-21 17:08:23,821 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:08:23,822 INFO L276 IsEmpty]: Start isEmpty. Operand 27693 states and 41891 transitions. [2022-11-21 17:08:23,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-11-21 17:08:23,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-21 17:08:23,835 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 17:08:23,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-11-21 17:08:23,835 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-21 17:08:23,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 17:08:23,836 INFO L85 PathProgramCache]: Analyzing trace with hash -1542413991, now seen corresponding path program 1 times [2022-11-21 17:08:23,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 17:08:23,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317627843] [2022-11-21 17:08:23,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 17:08:23,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 17:08:23,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:23,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-21 17:08:23,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:24,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-11-21 17:08:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-11-21 17:08:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-11-21 17:08:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:24,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-11-21 17:08:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 17:08:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 17:08:24,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 17:08:24,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317627843] [2022-11-21 17:08:24,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317627843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 17:08:24,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 17:08:24,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 17:08:24,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230451443] [2022-11-21 17:08:24,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 17:08:24,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 17:08:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 17:08:24,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 17:08:24,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-21 17:08:24,205 INFO L87 Difference]: Start difference. First operand 27693 states and 41891 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2022-11-21 17:08:55,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-21 17:08:55,370 INFO L93 Difference]: Finished difference Result 96614 states and 151100 transitions. [2022-11-21 17:08:55,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-21 17:08:55,371 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, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 179 [2022-11-21 17:08:55,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-21 17:08:55,571 INFO L225 Difference]: With dead ends: 96614 [2022-11-21 17:08:55,571 INFO L226 Difference]: Without dead ends: 73355 [2022-11-21 17:08:55,636 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 [2022-11-21 17:08:55,637 INFO L413 NwaCegarLoop]: 634 mSDtfsCounter, 2173 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 3565 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 2782 SdHoareTripleChecker+Invalid, 3680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-21 17:08:55,637 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 2782 Invalid, 3680 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3565 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-21 17:08:55,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73355 states.