./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6b4ec56b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN --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 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af --- 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-6b4ec56 [2022-11-20 11:03:16,239 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 11:03:16,242 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 11:03:16,284 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 11:03:16,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 11:03:16,288 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 11:03:16,291 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 11:03:16,294 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 11:03:16,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 11:03:16,303 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 11:03:16,305 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 11:03:16,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 11:03:16,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 11:03:16,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 11:03:16,312 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 11:03:16,319 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 11:03:16,321 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 11:03:16,322 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 11:03:16,324 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 11:03:16,330 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 11:03:16,332 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 11:03:16,334 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 11:03:16,336 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 11:03:16,337 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 11:03:16,347 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 11:03:16,348 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 11:03:16,348 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 11:03:16,350 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 11:03:16,351 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 11:03:16,352 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 11:03:16,352 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 11:03:16,353 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 11:03:16,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 11:03:16,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 11:03:16,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 11:03:16,357 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 11:03:16,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 11:03:16,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 11:03:16,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 11:03:16,360 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 11:03:16,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 11:03:16,362 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 11:03:16,404 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 11:03:16,404 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 11:03:16,405 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 11:03:16,405 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 11:03:16,406 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 11:03:16,407 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 11:03:16,407 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 11:03:16,408 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 11:03:16,408 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 11:03:16,408 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 11:03:16,409 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 11:03:16,409 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 11:03:16,410 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 11:03:16,410 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 11:03:16,410 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 11:03:16,410 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 11:03:16,411 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 11:03:16,411 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 11:03:16,411 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 11:03:16,411 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 11:03:16,411 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 11:03:16,412 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 11:03:16,412 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 11:03:16,412 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 11:03:16,412 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:03:16,413 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 11:03:16,413 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 11:03:16,413 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 11:03:16,414 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 11:03:16,414 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 11:03:16,415 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 11:03:16,415 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 11:03:16,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 11:03:16,415 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_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9629d1cdaf2a4c1ffb7c786f584a153b15eed3823334fbbe8ec635b18d57c1af [2022-11-20 11:03:16,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 11:03:16,730 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 11:03:16,734 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 11:03:16,735 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 11:03:16,735 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 11:03:16,737 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-11-20 11:03:19,736 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 11:03:19,999 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 11:03:20,000 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-11-20 11:03:20,028 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/data/e5347bc4f/50f8bb2fdd784ee6ab7a20811dede9e4/FLAG3871a75ee [2022-11-20 11:03:20,041 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/data/e5347bc4f/50f8bb2fdd784ee6ab7a20811dede9e4 [2022-11-20 11:03:20,045 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 11:03:20,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 11:03:20,051 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 11:03:20,051 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 11:03:20,055 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 11:03:20,055 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,057 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22edbc32 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20, skipping insertion in model container [2022-11-20 11:03:20,057 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,065 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 11:03:20,130 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 11:03:20,326 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_6c128a20-8db8-4583-8750-17026099ab79/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2022-11-20 11:03:20,425 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_6c128a20-8db8-4583-8750-17026099ab79/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2022-11-20 11:03:20,524 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:03:20,538 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 11:03:20,550 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_6c128a20-8db8-4583-8750-17026099ab79/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[911,924] [2022-11-20 11:03:20,580 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_6c128a20-8db8-4583-8750-17026099ab79/sv-benchmarks/c/combinations/pc_sfifo_3.cil+token_ring.07.cil-2.c[8416,8429] [2022-11-20 11:03:20,626 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 11:03:20,647 INFO L208 MainTranslator]: Completed translation [2022-11-20 11:03:20,648 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20 WrapperNode [2022-11-20 11:03:20,648 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 11:03:20,649 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 11:03:20,649 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 11:03:20,649 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 11:03:20,657 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,670 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,707 INFO L138 Inliner]: procedures = 69, calls = 83, calls flagged for inlining = 37, calls inlined = 37, statements flattened = 793 [2022-11-20 11:03:20,708 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 11:03:20,708 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 11:03:20,709 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 11:03:20,709 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 11:03:20,718 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,719 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,741 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,742 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,781 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,784 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,788 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,793 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 11:03:20,794 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 11:03:20,794 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 11:03:20,795 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 11:03:20,795 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (1/1) ... [2022-11-20 11:03:20,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 11:03:20,836 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 11:03:20,860 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 11:03:20,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c128a20-8db8-4583-8750-17026099ab79/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 11:03:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 11:03:20,907 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2022-11-20 11:03:20,907 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2022-11-20 11:03:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2022-11-20 11:03:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2022-11-20 11:03:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2022-11-20 11:03:20,908 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2022-11-20 11:03:20,908 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2022-11-20 11:03:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2022-11-20 11:03:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2022-11-20 11:03:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2022-11-20 11:03:20,909 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2022-11-20 11:03:20,909 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2022-11-20 11:03:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2022-11-20 11:03:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2022-11-20 11:03:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2022-11-20 11:03:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2022-11-20 11:03:20,910 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2022-11-20 11:03:20,910 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2022-11-20 11:03:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2022-11-20 11:03:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2022-11-20 11:03:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2022-11-20 11:03:20,911 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2022-11-20 11:03:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 11:03:20,911 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2022-11-20 11:03:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2022-11-20 11:03:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2022-11-20 11:03:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2022-11-20 11:03:20,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 11:03:20,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 11:03:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2022-11-20 11:03:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2022-11-20 11:03:20,913 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2022-11-20 11:03:20,913 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2022-11-20 11:03:21,095 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 11:03:21,113 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 11:03:21,929 INFO L769 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##56: assume !(1 == ~q_free~0); [2022-11-20 11:03:21,929 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; [2022-11-20 11:03:22,012 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 11:03:22,026 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 11:03:22,035 INFO L300 CfgBuilder]: Removed 14 assume(true) statements. [2022-11-20 11:03:22,038 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:03:22 BoogieIcfgContainer [2022-11-20 11:03:22,040 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 11:03:22,042 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 11:03:22,042 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 11:03:22,046 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 11:03:22,046 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 11:03:20" (1/3) ... [2022-11-20 11:03:22,047 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2baadbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:03:22, skipping insertion in model container [2022-11-20 11:03:22,048 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 11:03:20" (2/3) ... [2022-11-20 11:03:22,050 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2baadbd7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 11:03:22, skipping insertion in model container [2022-11-20 11:03:22,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 11:03:22" (3/3) ... [2022-11-20 11:03:22,055 INFO L112 eAbstractionObserver]: Analyzing ICFG pc_sfifo_3.cil+token_ring.07.cil-2.c [2022-11-20 11:03:22,074 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 11:03:22,074 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2022-11-20 11:03:22,156 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 11:03:22,164 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;@397aaca8, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 11:03:22,165 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2022-11-20 11:03:22,173 INFO L276 IsEmpty]: Start isEmpty. Operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) [2022-11-20 11:03:22,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:03:22,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:22,193 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] [2022-11-20 11:03:22,194 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:22,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:22,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1097425506, now seen corresponding path program 1 times [2022-11-20 11:03:22,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:22,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604410227] [2022-11-20 11:03:22,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:22,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:22,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:22,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:22,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:03:22,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:03:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:03:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:22,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:22,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:22,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604410227] [2022-11-20 11:03:22,702 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604410227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:22,702 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:22,702 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:03:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1559188219] [2022-11-20 11:03:22,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:22,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:22,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:22,743 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:22,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:03:22,747 INFO L87 Difference]: Start difference. First operand has 382 states, 325 states have (on average 1.6184615384615384) internal successors, (526), 333 states have internal predecessors, (526), 39 states have call successors, (39), 15 states have call predecessors, (39), 15 states have return successors, (39), 37 states have call predecessors, (39), 39 states have call successors, (39) 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) [2022-11-20 11:03:23,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:23,786 INFO L93 Difference]: Finished difference Result 758 states and 1198 transitions. [2022-11-20 11:03:23,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:03:23,789 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 [2022-11-20 11:03:23,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:23,802 INFO L225 Difference]: With dead ends: 758 [2022-11-20 11:03:23,802 INFO L226 Difference]: Without dead ends: 389 [2022-11-20 11:03:23,808 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 [2022-11-20 11:03:23,811 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 600 mSDsluCounter, 990 mSDsCounter, 0 mSdLazyCounter, 617 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 613 SdHoareTripleChecker+Valid, 1328 SdHoareTripleChecker+Invalid, 707 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:23,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [613 Valid, 1328 Invalid, 707 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 617 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-20 11:03:23,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 389 states. [2022-11-20 11:03:23,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 389 to 371. [2022-11-20 11:03:23,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 371 states, 317 states have (on average 1.5299684542586751) internal successors, (485), 322 states have internal predecessors, (485), 39 states have call successors, (39), 15 states have call predecessors, (39), 13 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-11-20 11:03:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 371 states to 371 states and 559 transitions. [2022-11-20 11:03:23,893 INFO L78 Accepts]: Start accepts. Automaton has 371 states and 559 transitions. Word has length 65 [2022-11-20 11:03:23,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:23,894 INFO L495 AbstractCegarLoop]: Abstraction has 371 states and 559 transitions. [2022-11-20 11:03:23,894 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) [2022-11-20 11:03:23,894 INFO L276 IsEmpty]: Start isEmpty. Operand 371 states and 559 transitions. [2022-11-20 11:03:23,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:03:23,897 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:23,897 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] [2022-11-20 11:03:23,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 11:03:23,898 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:23,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:23,899 INFO L85 PathProgramCache]: Analyzing trace with hash 1810756380, now seen corresponding path program 1 times [2022-11-20 11:03:23,899 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:23,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69008013] [2022-11-20 11:03:23,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:23,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:23,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:24,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:24,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:24,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:03:24,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:03:24,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:03:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:24,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:24,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:24,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69008013] [2022-11-20 11:03:24,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69008013] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:24,150 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:24,150 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:03:24,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577315356] [2022-11-20 11:03:24,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:24,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:03:24,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:24,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:03:24,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:03:24,153 INFO L87 Difference]: Start difference. First operand 371 states and 559 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) [2022-11-20 11:03:25,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:25,399 INFO L93 Difference]: Finished difference Result 626 states and 928 transitions. [2022-11-20 11:03:25,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:03:25,400 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 [2022-11-20 11:03:25,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:25,408 INFO L225 Difference]: With dead ends: 626 [2022-11-20 11:03:25,409 INFO L226 Difference]: Without dead ends: 522 [2022-11-20 11:03:25,413 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 [2022-11-20 11:03:25,415 INFO L413 NwaCegarLoop]: 338 mSDtfsCounter, 980 mSDsluCounter, 1048 mSDsCounter, 0 mSdLazyCounter, 1088 mSolverCounterSat, 187 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 987 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 1275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 187 IncrementalHoareTripleChecker+Valid, 1088 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:25,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [987 Valid, 1386 Invalid, 1275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [187 Valid, 1088 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:03:25,419 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 522 states. [2022-11-20 11:03:25,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 522 to 483. [2022-11-20 11:03:25,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 483 states, 407 states have (on average 1.5012285012285012) internal successors, (611), 414 states have internal predecessors, (611), 52 states have call successors, (52), 22 states have call predecessors, (52), 22 states have return successors, (53), 49 states have call predecessors, (53), 48 states have call successors, (53) [2022-11-20 11:03:25,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 483 states to 483 states and 716 transitions. [2022-11-20 11:03:25,482 INFO L78 Accepts]: Start accepts. Automaton has 483 states and 716 transitions. Word has length 65 [2022-11-20 11:03:25,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:25,483 INFO L495 AbstractCegarLoop]: Abstraction has 483 states and 716 transitions. [2022-11-20 11:03:25,483 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) [2022-11-20 11:03:25,483 INFO L276 IsEmpty]: Start isEmpty. Operand 483 states and 716 transitions. [2022-11-20 11:03:25,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:03:25,485 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:25,486 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] [2022-11-20 11:03:25,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 11:03:25,486 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:25,487 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:25,487 INFO L85 PathProgramCache]: Analyzing trace with hash -805322276, now seen corresponding path program 1 times [2022-11-20 11:03:25,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:25,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109164899] [2022-11-20 11:03:25,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:25,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:25,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:25,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:25,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:03:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:03:25,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:03:25,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:25,663 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:25,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:25,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109164899] [2022-11-20 11:03:25,664 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109164899] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:25,664 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:25,664 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:03:25,664 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317274151] [2022-11-20 11:03:25,664 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:25,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:03:25,665 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:25,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:03:25,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:03:25,666 INFO L87 Difference]: Start difference. First operand 483 states and 716 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) [2022-11-20 11:03:27,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:27,155 INFO L93 Difference]: Finished difference Result 880 states and 1281 transitions. [2022-11-20 11:03:27,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-11-20 11:03:27,156 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 [2022-11-20 11:03:27,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:27,160 INFO L225 Difference]: With dead ends: 880 [2022-11-20 11:03:27,160 INFO L226 Difference]: Without dead ends: 671 [2022-11-20 11:03:27,162 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 [2022-11-20 11:03:27,163 INFO L413 NwaCegarLoop]: 392 mSDtfsCounter, 1076 mSDsluCounter, 1631 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1105 SdHoareTripleChecker+Valid, 2023 SdHoareTripleChecker+Invalid, 1662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:27,163 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1105 Valid, 2023 Invalid, 1662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:03:27,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-11-20 11:03:27,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 595. [2022-11-20 11:03:27,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 595 states, 497 states have (on average 1.4808853118712273) internal successors, (736), 506 states have internal predecessors, (736), 65 states have call successors, (65), 29 states have call predecessors, (65), 31 states have return successors, (74), 63 states have call predecessors, (74), 61 states have call successors, (74) [2022-11-20 11:03:27,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 595 states to 595 states and 875 transitions. [2022-11-20 11:03:27,231 INFO L78 Accepts]: Start accepts. Automaton has 595 states and 875 transitions. Word has length 65 [2022-11-20 11:03:27,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:27,232 INFO L495 AbstractCegarLoop]: Abstraction has 595 states and 875 transitions. [2022-11-20 11:03:27,232 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) [2022-11-20 11:03:27,232 INFO L276 IsEmpty]: Start isEmpty. Operand 595 states and 875 transitions. [2022-11-20 11:03:27,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-20 11:03:27,241 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:27,242 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] [2022-11-20 11:03:27,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-20 11:03:27,242 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:27,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:27,243 INFO L85 PathProgramCache]: Analyzing trace with hash 1461058910, now seen corresponding path program 1 times [2022-11-20 11:03:27,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:27,243 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406390707] [2022-11-20 11:03:27,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:27,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:27,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:27,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:27,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:27,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:27,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-11-20 11:03:27,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-11-20 11:03:27,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-11-20 11:03:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:27,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:27,524 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:27,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406390707] [2022-11-20 11:03:27,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406390707] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:27,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:27,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:03:27,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836247957] [2022-11-20 11:03:27,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:27,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:27,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:27,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:27,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:27,527 INFO L87 Difference]: Start difference. First operand 595 states and 875 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) [2022-11-20 11:03:30,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:30,003 INFO L93 Difference]: Finished difference Result 2141 states and 3072 transitions. [2022-11-20 11:03:30,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:03:30,003 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 [2022-11-20 11:03:30,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:30,015 INFO L225 Difference]: With dead ends: 2141 [2022-11-20 11:03:30,015 INFO L226 Difference]: Without dead ends: 1808 [2022-11-20 11:03:30,018 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 [2022-11-20 11:03:30,031 INFO L413 NwaCegarLoop]: 426 mSDtfsCounter, 3397 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 1918 mSolverCounterSat, 673 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3416 SdHoareTripleChecker+Valid, 2011 SdHoareTripleChecker+Invalid, 2591 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 673 IncrementalHoareTripleChecker+Valid, 1918 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:30,033 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3416 Valid, 2011 Invalid, 2591 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [673 Valid, 1918 Invalid, 0 Unknown, 0 Unchecked, 1.7s Time] [2022-11-20 11:03:30,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1808 states. [2022-11-20 11:03:30,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1808 to 1648. [2022-11-20 11:03:30,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1648 states, 1345 states have (on average 1.3992565055762083) internal successors, (1882), 1369 states have internal predecessors, (1882), 175 states have call successors, (175), 112 states have call predecessors, (175), 126 states have return successors, (207), 169 states have call predecessors, (207), 171 states have call successors, (207) [2022-11-20 11:03:30,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1648 states to 1648 states and 2264 transitions. [2022-11-20 11:03:30,224 INFO L78 Accepts]: Start accepts. Automaton has 1648 states and 2264 transitions. Word has length 65 [2022-11-20 11:03:30,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:30,224 INFO L495 AbstractCegarLoop]: Abstraction has 1648 states and 2264 transitions. [2022-11-20 11:03:30,224 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) [2022-11-20 11:03:30,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1648 states and 2264 transitions. [2022-11-20 11:03:30,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 11:03:30,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:30,226 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] [2022-11-20 11:03:30,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 11:03:30,226 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:30,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:30,227 INFO L85 PathProgramCache]: Analyzing trace with hash 1639333971, now seen corresponding path program 1 times [2022-11-20 11:03:30,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:30,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594949598] [2022-11-20 11:03:30,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:30,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:30,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:30,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:30,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:30,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:03:30,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:03:30,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:03:30,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:30,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:30,378 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:30,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594949598] [2022-11-20 11:03:30,378 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594949598] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:30,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:30,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:03:30,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633753263] [2022-11-20 11:03:30,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:30,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:03:30,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:30,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:03:30,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:03:30,381 INFO L87 Difference]: Start difference. First operand 1648 states and 2264 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) [2022-11-20 11:03:31,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:31,658 INFO L93 Difference]: Finished difference Result 3264 states and 4484 transitions. [2022-11-20 11:03:31,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-20 11:03:31,659 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 [2022-11-20 11:03:31,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:31,668 INFO L225 Difference]: With dead ends: 3264 [2022-11-20 11:03:31,668 INFO L226 Difference]: Without dead ends: 1884 [2022-11-20 11:03:31,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:03:31,677 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 475 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 1524 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2254 SdHoareTripleChecker+Invalid, 1609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 1524 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:31,677 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 2254 Invalid, 1609 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 1524 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-20 11:03:31,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1884 states. [2022-11-20 11:03:31,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1884 to 1718. [2022-11-20 11:03:31,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1718 states, 1401 states have (on average 1.3832976445396146) internal successors, (1938), 1425 states have internal predecessors, (1938), 175 states have call successors, (175), 112 states have call predecessors, (175), 140 states have return successors, (221), 183 states have call predecessors, (221), 171 states have call successors, (221) [2022-11-20 11:03:31,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1718 states to 1718 states and 2334 transitions. [2022-11-20 11:03:31,845 INFO L78 Accepts]: Start accepts. Automaton has 1718 states and 2334 transitions. Word has length 66 [2022-11-20 11:03:31,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:31,846 INFO L495 AbstractCegarLoop]: Abstraction has 1718 states and 2334 transitions. [2022-11-20 11:03:31,846 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) [2022-11-20 11:03:31,846 INFO L276 IsEmpty]: Start isEmpty. Operand 1718 states and 2334 transitions. [2022-11-20 11:03:31,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 11:03:31,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:31,848 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:31,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 11:03:31,848 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:31,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:31,849 INFO L85 PathProgramCache]: Analyzing trace with hash 253130577, now seen corresponding path program 1 times [2022-11-20 11:03:31,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:31,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [594084260] [2022-11-20 11:03:31,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:31,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:31,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:31,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:31,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:31,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:31,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:31,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:32,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:03:32,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:32,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:03:32,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:32,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:03:32,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:32,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:32,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:32,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [594084260] [2022-11-20 11:03:32,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [594084260] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:32,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:32,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:03:32,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826301587] [2022-11-20 11:03:32,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:32,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:03:32,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:32,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:03:32,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:03:32,044 INFO L87 Difference]: Start difference. First operand 1718 states and 2334 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) [2022-11-20 11:03:33,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:33,472 INFO L93 Difference]: Finished difference Result 3332 states and 4507 transitions. [2022-11-20 11:03:33,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 11:03:33,473 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 [2022-11-20 11:03:33,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:33,481 INFO L225 Difference]: With dead ends: 3332 [2022-11-20 11:03:33,481 INFO L226 Difference]: Without dead ends: 1882 [2022-11-20 11:03:33,485 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 [2022-11-20 11:03:33,486 INFO L413 NwaCegarLoop]: 331 mSDtfsCounter, 475 mSDsluCounter, 1924 mSDsCounter, 0 mSdLazyCounter, 1525 mSolverCounterSat, 88 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 2255 SdHoareTripleChecker+Invalid, 1613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 88 IncrementalHoareTripleChecker+Valid, 1525 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:33,486 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [476 Valid, 2255 Invalid, 1613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [88 Valid, 1525 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:03:33,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1882 states. [2022-11-20 11:03:33,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1882 to 1758. [2022-11-20 11:03:33,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1758 states, 1433 states have (on average 1.3705512909979065) internal successors, (1964), 1457 states have internal predecessors, (1964), 175 states have call successors, (175), 112 states have call predecessors, (175), 148 states have return successors, (229), 191 states have call predecessors, (229), 171 states have call successors, (229) [2022-11-20 11:03:33,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1758 states to 1758 states and 2368 transitions. [2022-11-20 11:03:33,641 INFO L78 Accepts]: Start accepts. Automaton has 1758 states and 2368 transitions. Word has length 66 [2022-11-20 11:03:33,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:33,641 INFO L495 AbstractCegarLoop]: Abstraction has 1758 states and 2368 transitions. [2022-11-20 11:03:33,642 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) [2022-11-20 11:03:33,642 INFO L276 IsEmpty]: Start isEmpty. Operand 1758 states and 2368 transitions. [2022-11-20 11:03:33,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-11-20 11:03:33,643 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:33,643 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] [2022-11-20 11:03:33,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-20 11:03:33,644 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:33,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:33,644 INFO L85 PathProgramCache]: Analyzing trace with hash -776228721, now seen corresponding path program 1 times [2022-11-20 11:03:33,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:33,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000992217] [2022-11-20 11:03:33,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:33,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:33,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:33,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:33,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:33,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:03:33,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-11-20 11:03:33,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-11-20 11:03:33,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:33,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:33,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:33,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000992217] [2022-11-20 11:03:33,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000992217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:33,797 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:33,797 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-20 11:03:33,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638971444] [2022-11-20 11:03:33,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:33,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-20 11:03:33,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:33,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-20 11:03:33,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2022-11-20 11:03:33,799 INFO L87 Difference]: Start difference. First operand 1758 states and 2368 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) [2022-11-20 11:03:36,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:36,259 INFO L93 Difference]: Finished difference Result 5492 states and 7470 transitions. [2022-11-20 11:03:36,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-11-20 11:03:36,260 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 [2022-11-20 11:03:36,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:36,273 INFO L225 Difference]: With dead ends: 5492 [2022-11-20 11:03:36,273 INFO L226 Difference]: Without dead ends: 2155 [2022-11-20 11:03:36,280 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 [2022-11-20 11:03:36,282 INFO L413 NwaCegarLoop]: 427 mSDtfsCounter, 3485 mSDsluCounter, 1630 mSDsCounter, 0 mSdLazyCounter, 1830 mSolverCounterSat, 699 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3503 SdHoareTripleChecker+Valid, 2057 SdHoareTripleChecker+Invalid, 2529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 699 IncrementalHoareTripleChecker+Valid, 1830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:36,282 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3503 Valid, 2057 Invalid, 2529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [699 Valid, 1830 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-11-20 11:03:36,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2155 states. [2022-11-20 11:03:36,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2155 to 1959. [2022-11-20 11:03:36,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1959 states, 1564 states have (on average 1.3312020460358056) internal successors, (2082), 1590 states have internal predecessors, (2082), 215 states have call successors, (215), 140 states have call predecessors, (215), 178 states have return successors, (273), 231 states have call predecessors, (273), 211 states have call successors, (273) [2022-11-20 11:03:36,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1959 states to 1959 states and 2570 transitions. [2022-11-20 11:03:36,522 INFO L78 Accepts]: Start accepts. Automaton has 1959 states and 2570 transitions. Word has length 66 [2022-11-20 11:03:36,522 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:36,523 INFO L495 AbstractCegarLoop]: Abstraction has 1959 states and 2570 transitions. [2022-11-20 11:03:36,523 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) [2022-11-20 11:03:36,523 INFO L276 IsEmpty]: Start isEmpty. Operand 1959 states and 2570 transitions. [2022-11-20 11:03:36,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:03:36,525 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:36,526 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] [2022-11-20 11:03:36,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-20 11:03:36,526 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:36,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:36,527 INFO L85 PathProgramCache]: Analyzing trace with hash 1088286627, now seen corresponding path program 1 times [2022-11-20 11:03:36,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:36,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948431951] [2022-11-20 11:03:36,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:36,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:36,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:36,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:36,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:36,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:36,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:03:36,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:03:36,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:03:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:03:36,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:36,751 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-20 11:03:36,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:36,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948431951] [2022-11-20 11:03:36,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948431951] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:36,752 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:36,752 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-20 11:03:36,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040463338] [2022-11-20 11:03:36,752 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:36,754 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-20 11:03:36,754 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:36,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-20 11:03:36,755 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-20 11:03:36,755 INFO L87 Difference]: Start difference. First operand 1959 states and 2570 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:03:38,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:38,260 INFO L93 Difference]: Finished difference Result 3496 states and 4558 transitions. [2022-11-20 11:03:38,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-20 11:03:38,261 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 91 [2022-11-20 11:03:38,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:38,270 INFO L225 Difference]: With dead ends: 3496 [2022-11-20 11:03:38,270 INFO L226 Difference]: Without dead ends: 2043 [2022-11-20 11:03:38,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=113, Invalid=307, Unknown=0, NotChecked=0, Total=420 [2022-11-20 11:03:38,275 INFO L413 NwaCegarLoop]: 326 mSDtfsCounter, 1098 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 1367 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1124 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 1514 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 1367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:38,276 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1124 Valid, 1720 Invalid, 1514 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 1367 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-20 11:03:38,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2043 states. [2022-11-20 11:03:38,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2043 to 1738. [2022-11-20 11:03:38,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1396 states have (on average 1.3330945558739256) internal successors, (1861), 1417 states have internal predecessors, (1861), 187 states have call successors, (187), 121 states have call predecessors, (187), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-20 11:03:38,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2281 transitions. [2022-11-20 11:03:38,439 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2281 transitions. Word has length 91 [2022-11-20 11:03:38,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:38,439 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2281 transitions. [2022-11-20 11:03:38,440 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-11-20 11:03:38,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2281 transitions. [2022-11-20 11:03:38,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-20 11:03:38,441 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:38,442 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] [2022-11-20 11:03:38,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 11:03:38,443 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:38,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:38,444 INFO L85 PathProgramCache]: Analyzing trace with hash -1267518623, now seen corresponding path program 1 times [2022-11-20 11:03:38,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:38,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683961254] [2022-11-20 11:03:38,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:38,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:38,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:38,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:38,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:38,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:03:38,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:03:38,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:03:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-11-20 11:03:38,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:38,579 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 11:03:38,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:38,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683961254] [2022-11-20 11:03:38,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683961254] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:38,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:38,580 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:38,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472530614] [2022-11-20 11:03:38,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:38,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:38,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:38,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:38,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:38,582 INFO L87 Difference]: Start difference. First operand 1738 states and 2281 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) [2022-11-20 11:03:39,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:39,432 INFO L93 Difference]: Finished difference Result 3314 states and 4341 transitions. [2022-11-20 11:03:39,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-20 11:03:39,433 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 [2022-11-20 11:03:39,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:39,447 INFO L225 Difference]: With dead ends: 3314 [2022-11-20 11:03:39,447 INFO L226 Difference]: Without dead ends: 1845 [2022-11-20 11:03:39,451 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 [2022-11-20 11:03:39,453 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 1163 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1192 SdHoareTripleChecker+Valid, 1026 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:39,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1192 Valid, 1026 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-20 11:03:39,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1845 states. [2022-11-20 11:03:39,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1845 to 1738. [2022-11-20 11:03:39,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1738 states, 1396 states have (on average 1.3073065902578798) internal successors, (1825), 1417 states have internal predecessors, (1825), 187 states have call successors, (187), 121 states have call predecessors, (187), 153 states have return successors, (233), 201 states have call predecessors, (233), 183 states have call successors, (233) [2022-11-20 11:03:39,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1738 states to 1738 states and 2245 transitions. [2022-11-20 11:03:39,609 INFO L78 Accepts]: Start accepts. Automaton has 1738 states and 2245 transitions. Word has length 91 [2022-11-20 11:03:39,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:39,610 INFO L495 AbstractCegarLoop]: Abstraction has 1738 states and 2245 transitions. [2022-11-20 11:03:39,610 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) [2022-11-20 11:03:39,610 INFO L276 IsEmpty]: Start isEmpty. Operand 1738 states and 2245 transitions. [2022-11-20 11:03:39,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-20 11:03:39,612 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:39,612 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] [2022-11-20 11:03:39,612 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-20 11:03:39,612 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:39,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:39,613 INFO L85 PathProgramCache]: Analyzing trace with hash -512293133, now seen corresponding path program 1 times [2022-11-20 11:03:39,613 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:39,613 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [131873132] [2022-11-20 11:03:39,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:39,614 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:39,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:39,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-11-20 11:03:39,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:39,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-11-20 11:03:39,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-11-20 11:03:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-11-20 11:03:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-11-20 11:03:39,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-11-20 11:03:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:39,795 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 11:03:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:39,796 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [131873132] [2022-11-20 11:03:39,796 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [131873132] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:39,796 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:39,796 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-20 11:03:39,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33924683] [2022-11-20 11:03:39,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:39,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-20 11:03:39,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:39,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-20 11:03:39,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:03:39,798 INFO L87 Difference]: Start difference. First operand 1738 states and 2245 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) [2022-11-20 11:03:41,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:41,623 INFO L93 Difference]: Finished difference Result 4164 states and 5350 transitions. [2022-11-20 11:03:41,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-11-20 11:03:41,624 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 [2022-11-20 11:03:41,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:41,635 INFO L225 Difference]: With dead ends: 4164 [2022-11-20 11:03:41,635 INFO L226 Difference]: Without dead ends: 2540 [2022-11-20 11:03:41,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=210, Invalid=720, Unknown=0, NotChecked=0, Total=930 [2022-11-20 11:03:41,643 INFO L413 NwaCegarLoop]: 340 mSDtfsCounter, 1724 mSDsluCounter, 1442 mSDsCounter, 0 mSdLazyCounter, 1555 mSolverCounterSat, 368 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1762 SdHoareTripleChecker+Valid, 1782 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 368 IncrementalHoareTripleChecker+Valid, 1555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:41,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1762 Valid, 1782 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [368 Valid, 1555 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:03:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2540 states. [2022-11-20 11:03:41,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2540 to 2345. [2022-11-20 11:03:41,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1849 states have (on average 1.2731206057328286) internal successors, (2354), 1885 states have internal predecessors, (2354), 264 states have call successors, (264), 169 states have call predecessors, (264), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-20 11:03:41,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2984 transitions. [2022-11-20 11:03:41,867 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2984 transitions. Word has length 92 [2022-11-20 11:03:41,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:41,869 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 2984 transitions. [2022-11-20 11:03:41,869 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) [2022-11-20 11:03:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2984 transitions. [2022-11-20 11:03:41,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:03:41,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:41,871 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] [2022-11-20 11:03:41,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-20 11:03:41,872 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash 959549796, now seen corresponding path program 1 times [2022-11-20 11:03:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:41,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584786530] [2022-11-20 11:03:41,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:41,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:41,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:41,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:03:41,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:03:41,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:03:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:41,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:41,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:41,987 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584786530] [2022-11-20 11:03:41,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584786530] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:41,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:41,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-20 11:03:41,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466774988] [2022-11-20 11:03:41,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:41,988 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-20 11:03:41,988 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:41,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-20 11:03:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-20 11:03:41,989 INFO L87 Difference]: Start difference. First operand 2345 states and 2984 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-20 11:03:43,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:43,781 INFO L93 Difference]: Finished difference Result 2685 states and 3528 transitions. [2022-11-20 11:03:43,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:03:43,781 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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 124 [2022-11-20 11:03:43,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:43,791 INFO L225 Difference]: With dead ends: 2685 [2022-11-20 11:03:43,792 INFO L226 Difference]: Without dead ends: 2432 [2022-11-20 11:03:43,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-11-20 11:03:43,794 INFO L413 NwaCegarLoop]: 330 mSDtfsCounter, 783 mSDsluCounter, 471 mSDsCounter, 0 mSdLazyCounter, 806 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 801 SdHoareTripleChecker+Invalid, 892 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 806 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:43,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 801 Invalid, 892 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 806 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-20 11:03:43,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2432 states. [2022-11-20 11:03:44,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2432 to 2345. [2022-11-20 11:03:44,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2345 states, 1849 states have (on average 1.2725797728501893) internal successors, (2353), 1885 states have internal predecessors, (2353), 264 states have call successors, (264), 169 states have call predecessors, (264), 230 states have return successors, (366), 292 states have call predecessors, (366), 260 states have call successors, (366) [2022-11-20 11:03:44,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2345 states to 2345 states and 2983 transitions. [2022-11-20 11:03:44,179 INFO L78 Accepts]: Start accepts. Automaton has 2345 states and 2983 transitions. Word has length 124 [2022-11-20 11:03:44,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:44,180 INFO L495 AbstractCegarLoop]: Abstraction has 2345 states and 2983 transitions. [2022-11-20 11:03:44,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 3 states have internal predecessors, (113), 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) [2022-11-20 11:03:44,180 INFO L276 IsEmpty]: Start isEmpty. Operand 2345 states and 2983 transitions. [2022-11-20 11:03:44,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:03:44,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:44,184 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] [2022-11-20 11:03:44,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 11:03:44,185 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:44,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:44,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1292192934, now seen corresponding path program 1 times [2022-11-20 11:03:44,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:44,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747615175] [2022-11-20 11:03:44,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:44,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:44,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:44,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:44,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:44,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:44,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:44,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:03:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:44,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:03:44,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:44,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:03:44,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:44,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:44,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:44,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747615175] [2022-11-20 11:03:44,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747615175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:44,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:44,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 11:03:44,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697564084] [2022-11-20 11:03:44,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:44,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 11:03:44,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:44,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 11:03:44,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 11:03:44,375 INFO L87 Difference]: Start difference. First operand 2345 states and 2983 transitions. Second operand has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-11-20 11:03:47,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:47,155 INFO L93 Difference]: Finished difference Result 3015 states and 4054 transitions. [2022-11-20 11:03:47,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 11:03:47,156 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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 124 [2022-11-20 11:03:47,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:47,166 INFO L225 Difference]: With dead ends: 3015 [2022-11-20 11:03:47,167 INFO L226 Difference]: Without dead ends: 2771 [2022-11-20 11:03:47,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:03:47,169 INFO L413 NwaCegarLoop]: 323 mSDtfsCounter, 1240 mSDsluCounter, 847 mSDsCounter, 0 mSdLazyCounter, 1690 mSolverCounterSat, 136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1266 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 136 IncrementalHoareTripleChecker+Valid, 1690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:47,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1266 Valid, 1170 Invalid, 1826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [136 Valid, 1690 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-20 11:03:47,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2771 states. [2022-11-20 11:03:47,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2771 to 2596. [2022-11-20 11:03:47,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2077 states have (on average 1.306692344727973) internal successors, (2714), 2114 states have internal predecessors, (2714), 280 states have call successors, (280), 175 states have call predecessors, (280), 237 states have return successors, (385), 308 states have call predecessors, (385), 276 states have call successors, (385) [2022-11-20 11:03:47,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3379 transitions. [2022-11-20 11:03:47,587 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3379 transitions. Word has length 124 [2022-11-20 11:03:47,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:47,588 INFO L495 AbstractCegarLoop]: Abstraction has 2596 states and 3379 transitions. [2022-11-20 11:03:47,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 18.833333333333332) internal successors, (113), 4 states have internal predecessors, (113), 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) [2022-11-20 11:03:47,588 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3379 transitions. [2022-11-20 11:03:47,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:03:47,591 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:47,591 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] [2022-11-20 11:03:47,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-20 11:03:47,592 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:47,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:47,592 INFO L85 PathProgramCache]: Analyzing trace with hash 274544546, now seen corresponding path program 1 times [2022-11-20 11:03:47,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:47,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234983297] [2022-11-20 11:03:47,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:47,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:47,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:47,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:47,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:47,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:47,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:03:47,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:47,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:03:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:47,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:03:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:47,829 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:47,829 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:47,830 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234983297] [2022-11-20 11:03:47,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234983297] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:47,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:47,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:47,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508434334] [2022-11-20 11:03:47,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:47,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:47,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:47,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:47,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:47,832 INFO L87 Difference]: Start difference. First operand 2596 states and 3379 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:03:51,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:51,395 INFO L93 Difference]: Finished difference Result 3613 states and 5003 transitions. [2022-11-20 11:03:51,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:03:51,396 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:03:51,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:51,409 INFO L225 Difference]: With dead ends: 3613 [2022-11-20 11:03:51,409 INFO L226 Difference]: Without dead ends: 3118 [2022-11-20 11:03:51,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:51,412 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 1251 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 2555 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1277 SdHoareTripleChecker+Valid, 2022 SdHoareTripleChecker+Invalid, 2652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 2555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:51,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1277 Valid, 2022 Invalid, 2652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 2555 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:03:51,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3118 states. [2022-11-20 11:03:51,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3118 to 2830. [2022-11-20 11:03:51,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2830 states, 2288 states have (on average 1.3291083916083917) internal successors, (3041), 2326 states have internal predecessors, (3041), 296 states have call successors, (296), 181 states have call predecessors, (296), 244 states have return successors, (403), 325 states have call predecessors, (403), 292 states have call successors, (403) [2022-11-20 11:03:51,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2830 states to 2830 states and 3740 transitions. [2022-11-20 11:03:51,820 INFO L78 Accepts]: Start accepts. Automaton has 2830 states and 3740 transitions. Word has length 124 [2022-11-20 11:03:51,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:51,821 INFO L495 AbstractCegarLoop]: Abstraction has 2830 states and 3740 transitions. [2022-11-20 11:03:51,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:03:51,822 INFO L276 IsEmpty]: Start isEmpty. Operand 2830 states and 3740 transitions. [2022-11-20 11:03:51,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:03:51,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:51,825 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] [2022-11-20 11:03:51,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-20 11:03:51,825 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:51,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:51,826 INFO L85 PathProgramCache]: Analyzing trace with hash 392986020, now seen corresponding path program 1 times [2022-11-20 11:03:51,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:51,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1683805608] [2022-11-20 11:03:51,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:51,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:51,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:51,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:51,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:52,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:52,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:03:52,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:52,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:03:52,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:52,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:03:52,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:52,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:52,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:52,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1683805608] [2022-11-20 11:03:52,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1683805608] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:52,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:52,110 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:52,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304161299] [2022-11-20 11:03:52,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:52,111 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:52,111 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:52,112 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:52,112 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:52,112 INFO L87 Difference]: Start difference. First operand 2830 states and 3740 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:03:55,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:55,617 INFO L93 Difference]: Finished difference Result 4494 states and 6392 transitions. [2022-11-20 11:03:55,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:03:55,618 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:03:55,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:55,634 INFO L225 Difference]: With dead ends: 4494 [2022-11-20 11:03:55,634 INFO L226 Difference]: Without dead ends: 3765 [2022-11-20 11:03:55,639 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:55,639 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 1249 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 2020 SdHoareTripleChecker+Invalid, 2650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:55,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 2020 Invalid, 2650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 2551 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-20 11:03:55,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3765 states. [2022-11-20 11:03:56,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3765 to 3299. [2022-11-20 11:03:56,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3299 states, 2711 states have (on average 1.3633345628919218) internal successors, (3696), 2751 states have internal predecessors, (3696), 328 states have call successors, (328), 193 states have call predecessors, (328), 258 states have return successors, (443), 359 states have call predecessors, (443), 324 states have call successors, (443) [2022-11-20 11:03:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3299 states to 3299 states and 4467 transitions. [2022-11-20 11:03:56,204 INFO L78 Accepts]: Start accepts. Automaton has 3299 states and 4467 transitions. Word has length 124 [2022-11-20 11:03:56,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:03:56,204 INFO L495 AbstractCegarLoop]: Abstraction has 3299 states and 4467 transitions. [2022-11-20 11:03:56,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:03:56,204 INFO L276 IsEmpty]: Start isEmpty. Operand 3299 states and 4467 transitions. [2022-11-20 11:03:56,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:03:56,207 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:03:56,207 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:03:56,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-20 11:03:56,207 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:03:56,208 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:03:56,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1782280034, now seen corresponding path program 1 times [2022-11-20 11:03:56,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:03:56,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091601549] [2022-11-20 11:03:56,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:03:56,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:03:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:56,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:03:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:56,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:03:56,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:56,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:03:56,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:56,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:03:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:56,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:03:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:03:56,413 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:03:56,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:03:56,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091601549] [2022-11-20 11:03:56,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091601549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:03:56,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:03:56,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:03:56,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365399080] [2022-11-20 11:03:56,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:03:56,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:03:56,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:03:56,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:03:56,416 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:03:56,416 INFO L87 Difference]: Start difference. First operand 3299 states and 4467 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:03:59,863 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:03:59,864 INFO L93 Difference]: Finished difference Result 6191 states and 9055 transitions. [2022-11-20 11:03:59,864 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-20 11:03:59,864 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:03:59,864 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:03:59,887 INFO L225 Difference]: With dead ends: 6191 [2022-11-20 11:03:59,888 INFO L226 Difference]: Without dead ends: 4993 [2022-11-20 11:03:59,893 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2022-11-20 11:03:59,894 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1330 mSDsluCounter, 1111 mSDsCounter, 0 mSdLazyCounter, 2273 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1356 SdHoareTripleChecker+Valid, 1439 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 2273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:03:59,894 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1356 Valid, 1439 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 2273 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 11:03:59,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4993 states. [2022-11-20 11:04:00,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4993 to 4238. [2022-11-20 11:04:00,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.4069702079820123) internal successors, (5006), 3602 states have internal predecessors, (5006), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-20 11:04:00,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5927 transitions. [2022-11-20 11:04:00,538 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5927 transitions. Word has length 124 [2022-11-20 11:04:00,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:00,539 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5927 transitions. [2022-11-20 11:04:00,539 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:00,539 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5927 transitions. [2022-11-20 11:04:00,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:00,542 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:00,542 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] [2022-11-20 11:04:00,543 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-20 11:04:00,543 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:00,543 INFO L85 PathProgramCache]: Analyzing trace with hash -251114012, now seen corresponding path program 1 times [2022-11-20 11:04:00,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:00,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537218341] [2022-11-20 11:04:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:00,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:00,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:00,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:00,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:00,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:00,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:00,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:00,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:00,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:00,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:00,756 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:00,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537218341] [2022-11-20 11:04:00,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537218341] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:00,759 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:00,759 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:00,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [421888320] [2022-11-20 11:04:00,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:00,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:00,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:00,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:00,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:00,761 INFO L87 Difference]: Start difference. First operand 4238 states and 5927 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:03,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:03,185 INFO L93 Difference]: Finished difference Result 7133 states and 10548 transitions. [2022-11-20 11:04:03,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:04:03,186 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:03,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:03,206 INFO L225 Difference]: With dead ends: 7133 [2022-11-20 11:04:03,206 INFO L226 Difference]: Without dead ends: 4996 [2022-11-20 11:04:03,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:04:03,214 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 982 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1336 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1436 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1336 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:03,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1170 Invalid, 1436 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1336 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-20 11:04:03,220 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4996 states. [2022-11-20 11:04:03,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4996 to 4238. [2022-11-20 11:04:03,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.404440697020798) internal successors, (4997), 3602 states have internal predecessors, (4997), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-20 11:04:03,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5918 transitions. [2022-11-20 11:04:03,765 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5918 transitions. Word has length 124 [2022-11-20 11:04:03,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:03,765 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5918 transitions. [2022-11-20 11:04:03,765 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:03,766 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5918 transitions. [2022-11-20 11:04:03,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:03,769 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:03,769 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] [2022-11-20 11:04:03,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-20 11:04:03,770 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:03,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:03,770 INFO L85 PathProgramCache]: Analyzing trace with hash -1558256410, now seen corresponding path program 1 times [2022-11-20 11:04:03,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:03,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270301783] [2022-11-20 11:04:03,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:03,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:03,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:03,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:03,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:03,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:03,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:03,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:03,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:03,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:03,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:03,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270301783] [2022-11-20 11:04:03,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270301783] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:03,948 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:03,948 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:03,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307486465] [2022-11-20 11:04:03,949 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:03,949 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:03,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:03,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:03,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:03,950 INFO L87 Difference]: Start difference. First operand 4238 states and 5918 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:05,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:05,911 INFO L93 Difference]: Finished difference Result 7123 states and 10501 transitions. [2022-11-20 11:04:05,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:04:05,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:05,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:05,931 INFO L225 Difference]: With dead ends: 7123 [2022-11-20 11:04:05,931 INFO L226 Difference]: Without dead ends: 4986 [2022-11-20 11:04:05,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:04:05,938 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1142 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 1202 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 1343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 1202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:05,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 972 Invalid, 1343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 1202 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:04:05,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4986 states. [2022-11-20 11:04:06,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4986 to 4238. [2022-11-20 11:04:06,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.401911186059584) internal successors, (4988), 3602 states have internal predecessors, (4988), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-20 11:04:06,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5909 transitions. [2022-11-20 11:04:06,705 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5909 transitions. Word has length 124 [2022-11-20 11:04:06,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:06,706 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5909 transitions. [2022-11-20 11:04:06,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:06,707 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5909 transitions. [2022-11-20 11:04:06,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:06,710 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:06,710 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] [2022-11-20 11:04:06,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-20 11:04:06,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:06,711 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:06,711 INFO L85 PathProgramCache]: Analyzing trace with hash 339240356, now seen corresponding path program 1 times [2022-11-20 11:04:06,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:06,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173963969] [2022-11-20 11:04:06,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:06,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:06,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:06,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:06,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:06,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:06,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:06,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:06,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:06,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:06,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:06,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173963969] [2022-11-20 11:04:06,900 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173963969] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:06,900 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:06,900 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:06,901 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526113156] [2022-11-20 11:04:06,901 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:06,901 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:06,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:06,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:06,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:06,903 INFO L87 Difference]: Start difference. First operand 4238 states and 5909 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:09,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:09,180 INFO L93 Difference]: Finished difference Result 7113 states and 10454 transitions. [2022-11-20 11:04:09,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:04:09,181 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:09,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:09,197 INFO L225 Difference]: With dead ends: 7113 [2022-11-20 11:04:09,198 INFO L226 Difference]: Without dead ends: 4976 [2022-11-20 11:04:09,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:04:09,205 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 978 mSDsluCounter, 887 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 100 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 1170 SdHoareTripleChecker+Invalid, 1404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 100 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:09,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 1170 Invalid, 1404 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [100 Valid, 1304 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-11-20 11:04:09,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4976 states. [2022-11-20 11:04:09,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4976 to 4238. [2022-11-20 11:04:09,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4238 states, 3558 states have (on average 1.3993816750983699) internal successors, (4979), 3602 states have internal predecessors, (4979), 392 states have call successors, (392), 217 states have call predecessors, (392), 286 states have return successors, (529), 427 states have call predecessors, (529), 388 states have call successors, (529) [2022-11-20 11:04:09,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4238 states to 4238 states and 5900 transitions. [2022-11-20 11:04:09,962 INFO L78 Accepts]: Start accepts. Automaton has 4238 states and 5900 transitions. Word has length 124 [2022-11-20 11:04:09,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:09,962 INFO L495 AbstractCegarLoop]: Abstraction has 4238 states and 5900 transitions. [2022-11-20 11:04:09,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:09,963 INFO L276 IsEmpty]: Start isEmpty. Operand 4238 states and 5900 transitions. [2022-11-20 11:04:09,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:09,966 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:09,966 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-20 11:04:09,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 11:04:09,967 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:09,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:09,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1370281254, now seen corresponding path program 1 times [2022-11-20 11:04:09,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:09,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649259653] [2022-11-20 11:04:09,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:09,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:09,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:10,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:10,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:10,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:10,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:10,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649259653] [2022-11-20 11:04:10,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649259653] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:10,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:10,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:10,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571259698] [2022-11-20 11:04:10,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:10,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:10,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:10,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:10,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:10,167 INFO L87 Difference]: Start difference. First operand 4238 states and 5900 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:14,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:14,875 INFO L93 Difference]: Finished difference Result 10403 states and 15491 transitions. [2022-11-20 11:04:14,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:04:14,879 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:14,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:14,904 INFO L225 Difference]: With dead ends: 10403 [2022-11-20 11:04:14,905 INFO L226 Difference]: Without dead ends: 8266 [2022-11-20 11:04:14,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:04:14,915 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1299 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2898 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 2999 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:14,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 2010 Invalid, 2999 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2898 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-20 11:04:14,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8266 states. [2022-11-20 11:04:15,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8266 to 6133. [2022-11-20 11:04:15,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6133 states, 5277 states have (on average 1.4426757627439832) internal successors, (7613), 5329 states have internal predecessors, (7613), 512 states have call successors, (512), 265 states have call predecessors, (512), 342 states have return successors, (711), 555 states have call predecessors, (711), 508 states have call successors, (711) [2022-11-20 11:04:15,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6133 states to 6133 states and 8836 transitions. [2022-11-20 11:04:15,776 INFO L78 Accepts]: Start accepts. Automaton has 6133 states and 8836 transitions. Word has length 124 [2022-11-20 11:04:15,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:15,776 INFO L495 AbstractCegarLoop]: Abstraction has 6133 states and 8836 transitions. [2022-11-20 11:04:15,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:15,777 INFO L276 IsEmpty]: Start isEmpty. Operand 6133 states and 8836 transitions. [2022-11-20 11:04:15,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:15,781 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:15,781 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] [2022-11-20 11:04:15,782 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-11-20 11:04:15,782 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:15,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:15,782 INFO L85 PathProgramCache]: Analyzing trace with hash -536122012, now seen corresponding path program 1 times [2022-11-20 11:04:15,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:15,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [680802591] [2022-11-20 11:04:15,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:15,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:15,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:15,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:15,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:15,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:15,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:15,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:15,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:15,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:15,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:15,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:15,975 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:15,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:15,975 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [680802591] [2022-11-20 11:04:15,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [680802591] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:15,976 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:15,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:15,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [247826304] [2022-11-20 11:04:15,977 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:15,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:15,978 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:15,978 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:15,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:15,978 INFO L87 Difference]: Start difference. First operand 6133 states and 8836 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:21,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:21,138 INFO L93 Difference]: Finished difference Result 17788 states and 27001 transitions. [2022-11-20 11:04:21,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:04:21,138 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:21,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:21,187 INFO L225 Difference]: With dead ends: 17788 [2022-11-20 11:04:21,188 INFO L226 Difference]: Without dead ends: 13756 [2022-11-20 11:04:21,204 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:04:21,205 INFO L413 NwaCegarLoop]: 462 mSDtfsCounter, 1476 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 2413 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1510 SdHoareTripleChecker+Valid, 2006 SdHoareTripleChecker+Invalid, 2517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 2413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:21,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1510 Valid, 2006 Invalid, 2517 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 2413 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-20 11:04:21,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13756 states. [2022-11-20 11:04:22,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13756 to 9746. [2022-11-20 11:04:22,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9746 states, 8546 states have (on average 1.472384741399485) internal successors, (12583), 8614 states have internal predecessors, (12583), 744 states have call successors, (744), 361 states have call predecessors, (744), 454 states have return successors, (1121), 803 states have call predecessors, (1121), 740 states have call successors, (1121) [2022-11-20 11:04:22,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9746 states to 9746 states and 14448 transitions. [2022-11-20 11:04:22,558 INFO L78 Accepts]: Start accepts. Automaton has 9746 states and 14448 transitions. Word has length 124 [2022-11-20 11:04:22,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:22,558 INFO L495 AbstractCegarLoop]: Abstraction has 9746 states and 14448 transitions. [2022-11-20 11:04:22,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:22,559 INFO L276 IsEmpty]: Start isEmpty. Operand 9746 states and 14448 transitions. [2022-11-20 11:04:22,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:22,565 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:22,566 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] [2022-11-20 11:04:22,566 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-11-20 11:04:22,566 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:22,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:22,567 INFO L85 PathProgramCache]: Analyzing trace with hash 1064949094, now seen corresponding path program 1 times [2022-11-20 11:04:22,567 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:22,567 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040594393] [2022-11-20 11:04:22,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:22,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:22,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:22,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:22,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:22,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:22,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:22,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:22,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:22,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:22,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:22,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:22,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:22,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040594393] [2022-11-20 11:04:22,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040594393] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:22,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:22,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:22,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385364400] [2022-11-20 11:04:22,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:22,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:22,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:22,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:22,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:22,752 INFO L87 Difference]: Start difference. First operand 9746 states and 14448 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:29,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:29,933 INFO L93 Difference]: Finished difference Result 31775 states and 48871 transitions. [2022-11-20 11:04:29,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:04:29,934 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:29,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:30,019 INFO L225 Difference]: With dead ends: 31775 [2022-11-20 11:04:30,019 INFO L226 Difference]: Without dead ends: 24130 [2022-11-20 11:04:30,050 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:04:30,051 INFO L413 NwaCegarLoop]: 463 mSDtfsCounter, 1277 mSDsluCounter, 1547 mSDsCounter, 0 mSdLazyCounter, 2782 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1302 SdHoareTripleChecker+Valid, 2010 SdHoareTripleChecker+Invalid, 2883 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2782 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:30,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1302 Valid, 2010 Invalid, 2883 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2782 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-20 11:04:30,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24130 states. [2022-11-20 11:04:32,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24130 to 17115. [2022-11-20 11:04:32,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17115 states, 15243 states have (on average 1.4974086465918783) internal successors, (22825), 15343 states have internal predecessors, (22825), 1192 states have call successors, (1192), 553 states have call predecessors, (1192), 678 states have return successors, (2087), 1283 states have call predecessors, (2087), 1188 states have call successors, (2087) [2022-11-20 11:04:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17115 states to 17115 states and 26104 transitions. [2022-11-20 11:04:32,468 INFO L78 Accepts]: Start accepts. Automaton has 17115 states and 26104 transitions. Word has length 124 [2022-11-20 11:04:32,468 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:32,469 INFO L495 AbstractCegarLoop]: Abstraction has 17115 states and 26104 transitions. [2022-11-20 11:04:32,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 17115 states and 26104 transitions. [2022-11-20 11:04:32,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:32,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:32,480 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] [2022-11-20 11:04:32,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-11-20 11:04:32,480 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:32,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:32,481 INFO L85 PathProgramCache]: Analyzing trace with hash 8217892, now seen corresponding path program 1 times [2022-11-20 11:04:32,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:32,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166681190] [2022-11-20 11:04:32,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:32,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:32,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:32,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:32,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:32,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:32,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:32,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:32,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:32,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:32,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:32,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:32,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166681190] [2022-11-20 11:04:32,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166681190] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:32,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:32,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:32,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815005121] [2022-11-20 11:04:32,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:32,674 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:32,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:32,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:32,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:32,675 INFO L87 Difference]: Start difference. First operand 17115 states and 26104 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:43,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:43,615 INFO L93 Difference]: Finished difference Result 59606 states and 93149 transitions. [2022-11-20 11:04:43,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-11-20 11:04:43,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:43,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:43,792 INFO L225 Difference]: With dead ends: 59606 [2022-11-20 11:04:43,793 INFO L226 Difference]: Without dead ends: 44592 [2022-11-20 11:04:43,835 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-11-20 11:04:43,836 INFO L413 NwaCegarLoop]: 328 mSDtfsCounter, 1467 mSDsluCounter, 1107 mSDsCounter, 0 mSdLazyCounter, 2173 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 1435 SdHoareTripleChecker+Invalid, 2303 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 2173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:43,837 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 1435 Invalid, 2303 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 2173 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-20 11:04:43,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44592 states. [2022-11-20 11:04:48,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44592 to 31820. [2022-11-20 11:04:48,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 28636 states have (on average 1.5134446151697165) internal successors, (43339), 28800 states have internal predecessors, (43339), 2056 states have call successors, (2056), 937 states have call predecessors, (2056), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-20 11:04:48,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 49868 transitions. [2022-11-20 11:04:48,233 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 49868 transitions. Word has length 124 [2022-11-20 11:04:48,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:04:48,233 INFO L495 AbstractCegarLoop]: Abstraction has 31820 states and 49868 transitions. [2022-11-20 11:04:48,233 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:48,233 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 49868 transitions. [2022-11-20 11:04:48,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:04:48,255 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:04:48,255 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] [2022-11-20 11:04:48,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-11-20 11:04:48,255 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:04:48,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:04:48,256 INFO L85 PathProgramCache]: Analyzing trace with hash 1359603110, now seen corresponding path program 1 times [2022-11-20 11:04:48,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:04:48,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278211463] [2022-11-20 11:04:48,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:04:48,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:04:48,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:04:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:04:48,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:04:48,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:04:48,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:04:48,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:04:48,409 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:04:48,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:04:48,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278211463] [2022-11-20 11:04:48,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278211463] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:04:48,410 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:04:48,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:04:48,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1481127826] [2022-11-20 11:04:48,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:04:48,411 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:04:48,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:04:48,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:04:48,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:04:48,411 INFO L87 Difference]: Start difference. First operand 31820 states and 49868 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:04:56,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-20 11:04:56,991 INFO L93 Difference]: Finished difference Result 69865 states and 112203 transitions. [2022-11-20 11:04:56,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 11:04:56,991 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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 124 [2022-11-20 11:04:56,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-20 11:04:57,095 INFO L225 Difference]: With dead ends: 69865 [2022-11-20 11:04:57,095 INFO L226 Difference]: Without dead ends: 40146 [2022-11-20 11:04:57,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-11-20 11:04:57,152 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 982 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 1237 mSolverCounterSat, 102 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1009 SdHoareTripleChecker+Valid, 1168 SdHoareTripleChecker+Invalid, 1339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 102 IncrementalHoareTripleChecker+Valid, 1237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-20 11:04:57,152 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1009 Valid, 1168 Invalid, 1339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [102 Valid, 1237 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-20 11:04:57,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40146 states. [2022-11-20 11:05:02,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40146 to 31820. [2022-11-20 11:05:02,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31820 states, 28636 states have (on average 1.5089397960609023) internal successors, (43210), 28800 states have internal predecessors, (43210), 2056 states have call successors, (2056), 937 states have call predecessors, (2056), 1126 states have return successors, (4473), 2211 states have call predecessors, (4473), 2052 states have call successors, (4473) [2022-11-20 11:05:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31820 states to 31820 states and 49739 transitions. [2022-11-20 11:05:02,677 INFO L78 Accepts]: Start accepts. Automaton has 31820 states and 49739 transitions. Word has length 124 [2022-11-20 11:05:02,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-20 11:05:02,677 INFO L495 AbstractCegarLoop]: Abstraction has 31820 states and 49739 transitions. [2022-11-20 11:05:02,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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) [2022-11-20 11:05:02,678 INFO L276 IsEmpty]: Start isEmpty. Operand 31820 states and 49739 transitions. [2022-11-20 11:05:02,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-20 11:05:02,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-20 11:05:02,696 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] [2022-11-20 11:05:02,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-11-20 11:05:02,696 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-20 11:05:02,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 11:05:02,697 INFO L85 PathProgramCache]: Analyzing trace with hash 476094120, now seen corresponding path program 1 times [2022-11-20 11:05:02,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 11:05:02,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [808456799] [2022-11-20 11:05:02,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 11:05:02,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 11:05:02,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-11-20 11:05:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:02,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-11-20 11:05:02,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:02,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-11-20 11:05:02,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:02,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-11-20 11:05:02,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:02,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-11-20 11:05:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 11:05:02,870 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 11:05:02,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 11:05:02,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [808456799] [2022-11-20 11:05:02,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [808456799] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 11:05:02,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 11:05:02,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 11:05:02,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464293707] [2022-11-20 11:05:02,872 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 11:05:02,872 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 11:05:02,872 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 11:05:02,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 11:05:02,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-20 11:05:02,873 INFO L87 Difference]: Start difference. First operand 31820 states and 49739 transitions. Second operand has 7 states, 7 states have (on average 16.142857142857142) internal successors, (113), 5 states have internal predecessors, (113), 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)