./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa --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 dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 19:56:04,460 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 19:56:04,461 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 19:56:04,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 19:56:04,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 19:56:04,484 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 19:56:04,486 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 19:56:04,487 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 19:56:04,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 19:56:04,490 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 19:56:04,491 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 19:56:04,492 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 19:56:04,492 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 19:56:04,493 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 19:56:04,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 19:56:04,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 19:56:04,496 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 19:56:04,496 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 19:56:04,498 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 19:56:04,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 19:56:04,501 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 19:56:04,502 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 19:56:04,503 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 19:56:04,504 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 19:56:04,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 19:56:04,507 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 19:56:04,507 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 19:56:04,508 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 19:56:04,508 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 19:56:04,509 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 19:56:04,510 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 19:56:04,510 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 19:56:04,511 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 19:56:04,511 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 19:56:04,512 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 19:56:04,512 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 19:56:04,513 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 19:56:04,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 19:56:04,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 19:56:04,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 19:56:04,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 19:56:04,515 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 19:56:04,531 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 19:56:04,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 19:56:04,532 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 19:56:04,532 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 19:56:04,532 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 19:56:04,532 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 19:56:04,533 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 19:56:04,533 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 19:56:04,533 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 19:56:04,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 19:56:04,533 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 19:56:04,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 19:56:04,534 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 19:56:04,535 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 19:56:04,535 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 19:56:04,535 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 19:56:04,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:56:04,535 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 19:56:04,535 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 19:56:04,535 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 19:56:04,535 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 19:56:04,535 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 19:56:04,536 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 19:56:04,536 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 19:56:04,536 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 19:56:04,536 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 19:56:04,536 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_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dc8dc9bdb034e5a733c81076f9e42c36caa1eb5cb68a77287d3420bd964c5f5a [2021-12-06 19:56:04,711 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 19:56:04,726 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 19:56:04,728 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 19:56:04,729 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 19:56:04,729 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 19:56:04,730 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2021-12-06 19:56:04,779 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/data/64cb3be12/ff6bcb2bd37c4154af5120530e848cd7/FLAG6972f381b [2021-12-06 19:56:05,215 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 19:56:05,215 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c [2021-12-06 19:56:05,228 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/data/64cb3be12/ff6bcb2bd37c4154af5120530e848cd7/FLAG6972f381b [2021-12-06 19:56:05,238 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/data/64cb3be12/ff6bcb2bd37c4154af5120530e848cd7 [2021-12-06 19:56:05,240 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 19:56:05,242 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 19:56:05,243 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 19:56:05,243 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 19:56:05,245 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 19:56:05,246 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47f0f4e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05, skipping insertion in model container [2021-12-06 19:56:05,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 19:56:05,292 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 19:56:05,409 WARN L230 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_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2021-12-06 19:56:05,445 WARN L230 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_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2021-12-06 19:56:05,519 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:56:05,528 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 19:56:05,536 WARN L230 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_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[914,927] [2021-12-06 19:56:05,547 WARN L230 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_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/sv-benchmarks/c/combinations/pc_sfifo_2.cil-1+token_ring.15.cil.c[7115,7128] [2021-12-06 19:56:05,584 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 19:56:05,603 INFO L208 MainTranslator]: Completed translation [2021-12-06 19:56:05,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05 WrapperNode [2021-12-06 19:56:05,603 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 19:56:05,604 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 19:56:05,604 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 19:56:05,604 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 19:56:05,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,624 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,667 INFO L137 Inliner]: procedures = 79, calls = 97, calls flagged for inlining = 47, calls inlined = 47, statements flattened = 1101 [2021-12-06 19:56:05,667 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 19:56:05,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 19:56:05,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 19:56:05,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 19:56:05,675 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,676 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,680 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,681 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,700 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,723 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,731 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 19:56:05,732 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 19:56:05,732 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 19:56:05,732 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 19:56:05,733 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (1/1) ... [2021-12-06 19:56:05,741 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 19:56:05,752 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:56:05,763 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 19:56:05,764 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 19:56:05,792 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 19:56:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-12-06 19:56:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-12-06 19:56:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_write_p_triggered [2021-12-06 19:56:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_write_p_triggered [2021-12-06 19:56:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread1 [2021-12-06 19:56:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread1 [2021-12-06 19:56:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread2 [2021-12-06 19:56:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread2 [2021-12-06 19:56:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events1 [2021-12-06 19:56:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events1 [2021-12-06 19:56:05,793 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events2 [2021-12-06 19:56:05,793 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events2 [2021-12-06 19:56:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads2 [2021-12-06 19:56:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads2 [2021-12-06 19:56:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads1 [2021-12-06 19:56:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads1 [2021-12-06 19:56:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure is_do_read_c_triggered [2021-12-06 19:56:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure is_do_read_c_triggered [2021-12-06 19:56:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels1 [2021-12-06 19:56:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels1 [2021-12-06 19:56:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels2 [2021-12-06 19:56:05,794 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels2 [2021-12-06 19:56:05,794 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 19:56:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events2 [2021-12-06 19:56:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events2 [2021-12-06 19:56:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events1 [2021-12-06 19:56:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events1 [2021-12-06 19:56:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 19:56:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 19:56:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure error1 [2021-12-06 19:56:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure error1 [2021-12-06 19:56:05,795 INFO L130 BoogieDeclarations]: Found specification of procedure error2 [2021-12-06 19:56:05,795 INFO L138 BoogieDeclarations]: Found implementation of procedure error2 [2021-12-06 19:56:05,886 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 19:56:05,888 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 19:56:06,418 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 19:56:06,431 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 19:56:06,431 INFO L301 CfgBuilder]: Removed 20 assume(true) statements. [2021-12-06 19:56:06,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:56:06 BoogieIcfgContainer [2021-12-06 19:56:06,434 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 19:56:06,436 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 19:56:06,436 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 19:56:06,439 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 19:56:06,439 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 07:56:05" (1/3) ... [2021-12-06 19:56:06,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3a849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:56:06, skipping insertion in model container [2021-12-06 19:56:06,440 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 07:56:05" (2/3) ... [2021-12-06 19:56:06,440 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4f3a849 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 07:56:06, skipping insertion in model container [2021-12-06 19:56:06,441 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 07:56:06" (3/3) ... [2021-12-06 19:56:06,442 INFO L111 eAbstractionObserver]: Analyzing ICFG pc_sfifo_2.cil-1+token_ring.15.cil.c [2021-12-06 19:56:06,447 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 19:56:06,447 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-12-06 19:56:06,489 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 19:56:06,494 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-06 19:56:06,494 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-12-06 19:56:06,522 INFO L276 IsEmpty]: Start isEmpty. Operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) [2021-12-06 19:56:06,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:56:06,530 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:06,530 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:06,531 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:06,535 INFO L85 PathProgramCache]: Analyzing trace with hash -338141029, now seen corresponding path program 1 times [2021-12-06 19:56:06,542 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:06,542 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259681658] [2021-12-06 19:56:06,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:06,543 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:06,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:06,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:06,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:06,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:06,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:06,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:06,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:06,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259681658] [2021-12-06 19:56:06,790 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259681658] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:06,790 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:06,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:56:06,791 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455843877] [2021-12-06 19:56:06,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:06,795 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:56:06,795 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:06,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:56:06,815 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:56:06,818 INFO L87 Difference]: Start difference. First operand has 514 states, 453 states have (on average 1.6467991169977925) internal successors, (746), 461 states have internal predecessors, (746), 43 states have call successors, (43), 15 states have call predecessors, (43), 15 states have return successors, (43), 41 states have call predecessors, (43), 43 states have call successors, (43) 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) [2021-12-06 19:56:07,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:07,652 INFO L93 Difference]: Finished difference Result 1133 states and 1820 transitions. [2021-12-06 19:56:07,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:56:07,655 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 [2021-12-06 19:56:07,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:07,674 INFO L225 Difference]: With dead ends: 1133 [2021-12-06 19:56:07,674 INFO L226 Difference]: Without dead ends: 638 [2021-12-06 19:56:07,681 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=193, Unknown=0, NotChecked=0, Total=272 [2021-12-06 19:56:07,684 INFO L933 BasicCegarLoop]: 799 mSDtfsCounter, 1267 mSDsluCounter, 1559 mSDsCounter, 0 mSdLazyCounter, 1023 mSolverCounterSat, 205 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1272 SdHoareTripleChecker+Valid, 2358 SdHoareTripleChecker+Invalid, 1228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 205 IncrementalHoareTripleChecker+Valid, 1023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:07,686 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1272 Valid, 2358 Invalid, 1228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [205 Valid, 1023 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:56:07,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 638 states. [2021-12-06 19:56:07,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 638 to 599. [2021-12-06 19:56:07,776 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 599 states, 521 states have (on average 1.5335892514395393) internal successors, (799), 528 states have internal predecessors, (799), 54 states have call successors, (54), 22 states have call predecessors, (54), 22 states have return successors, (55), 51 states have call predecessors, (55), 50 states have call successors, (55) [2021-12-06 19:56:07,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 599 states to 599 states and 908 transitions. [2021-12-06 19:56:07,784 INFO L78 Accepts]: Start accepts. Automaton has 599 states and 908 transitions. Word has length 65 [2021-12-06 19:56:07,785 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:07,785 INFO L470 AbstractCegarLoop]: Abstraction has 599 states and 908 transitions. [2021-12-06 19:56:07,785 INFO L471 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) [2021-12-06 19:56:07,785 INFO L276 IsEmpty]: Start isEmpty. Operand 599 states and 908 transitions. [2021-12-06 19:56:07,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:56:07,790 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:07,790 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:07,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 19:56:07,791 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:07,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:07,792 INFO L85 PathProgramCache]: Analyzing trace with hash -74903688, now seen corresponding path program 1 times [2021-12-06 19:56:07,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:07,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [186851026] [2021-12-06 19:56:07,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:07,793 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:07,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:07,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:07,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:07,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:07,955 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:07,955 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:07,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [186851026] [2021-12-06 19:56:07,956 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [186851026] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:07,956 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:07,956 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:56:07,956 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877158721] [2021-12-06 19:56:07,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:07,957 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:56:07,957 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:07,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:56:07,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:56:07,958 INFO L87 Difference]: Start difference. First operand 599 states and 908 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:08,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:08,767 INFO L93 Difference]: Finished difference Result 813 states and 1202 transitions. [2021-12-06 19:56:08,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:56:08,768 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-06 19:56:08,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:08,772 INFO L225 Difference]: With dead ends: 813 [2021-12-06 19:56:08,772 INFO L226 Difference]: Without dead ends: 636 [2021-12-06 19:56:08,773 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:56:08,774 INFO L933 BasicCegarLoop]: 763 mSDtfsCounter, 1031 mSDsluCounter, 2450 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1032 SdHoareTripleChecker+Valid, 3213 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:08,774 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1032 Valid, 3213 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:56:08,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-12-06 19:56:08,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 604. [2021-12-06 19:56:08,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 604 states, 525 states have (on average 1.5276190476190477) internal successors, (802), 532 states have internal predecessors, (802), 54 states have call successors, (54), 22 states have call predecessors, (54), 23 states have return successors, (56), 52 states have call predecessors, (56), 50 states have call successors, (56) [2021-12-06 19:56:08,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 604 states to 604 states and 912 transitions. [2021-12-06 19:56:08,802 INFO L78 Accepts]: Start accepts. Automaton has 604 states and 912 transitions. Word has length 65 [2021-12-06 19:56:08,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:08,802 INFO L470 AbstractCegarLoop]: Abstraction has 604 states and 912 transitions. [2021-12-06 19:56:08,802 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:08,802 INFO L276 IsEmpty]: Start isEmpty. Operand 604 states and 912 transitions. [2021-12-06 19:56:08,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:56:08,804 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:08,804 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:08,805 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 19:56:08,805 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:08,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:08,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1104262986, now seen corresponding path program 1 times [2021-12-06 19:56:08,805 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:08,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [434712461] [2021-12-06 19:56:08,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:08,806 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:08,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:08,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:08,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:08,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:08,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:08,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:08,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:08,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:08,914 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:08,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [434712461] [2021-12-06 19:56:08,914 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [434712461] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:08,914 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:08,914 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 19:56:08,915 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284245340] [2021-12-06 19:56:08,915 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:08,915 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:56:08,915 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:08,916 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:56:08,916 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:56:08,916 INFO L87 Difference]: Start difference. First operand 604 states and 912 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-06 19:56:10,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:10,043 INFO L93 Difference]: Finished difference Result 1504 states and 2131 transitions. [2021-12-06 19:56:10,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-12-06 19:56:10,043 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) Word has length 65 [2021-12-06 19:56:10,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:10,049 INFO L225 Difference]: With dead ends: 1504 [2021-12-06 19:56:10,049 INFO L226 Difference]: Without dead ends: 1310 [2021-12-06 19:56:10,051 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 341 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=257, Invalid=1075, Unknown=0, NotChecked=0, Total=1332 [2021-12-06 19:56:10,052 INFO L933 BasicCegarLoop]: 874 mSDtfsCounter, 3811 mSDsluCounter, 2319 mSDsCounter, 0 mSdLazyCounter, 1680 mSolverCounterSat, 629 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3827 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 2309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 629 IncrementalHoareTripleChecker+Valid, 1680 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:10,052 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3827 Valid, 3193 Invalid, 2309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [629 Valid, 1680 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-12-06 19:56:10,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1310 states. [2021-12-06 19:56:10,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1310 to 1185. [2021-12-06 19:56:10,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 987 states have (on average 1.4346504559270516) internal successors, (1416), 1002 states have internal predecessors, (1416), 111 states have call successors, (111), 75 states have call predecessors, (111), 85 states have return successors, (125), 109 states have call predecessors, (125), 107 states have call successors, (125) [2021-12-06 19:56:10,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1652 transitions. [2021-12-06 19:56:10,111 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1652 transitions. Word has length 65 [2021-12-06 19:56:10,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:10,112 INFO L470 AbstractCegarLoop]: Abstraction has 1185 states and 1652 transitions. [2021-12-06 19:56:10,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 7 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 4 states have call successors, (7) [2021-12-06 19:56:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1652 transitions. [2021-12-06 19:56:10,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:56:10,113 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:10,113 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:10,113 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 19:56:10,114 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:10,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:10,114 INFO L85 PathProgramCache]: Analyzing trace with hash -52813897, now seen corresponding path program 1 times [2021-12-06 19:56:10,114 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:10,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1429755569] [2021-12-06 19:56:10,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:10,114 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:10,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:10,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:10,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:10,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:10,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:10,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:10,204 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:10,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1429755569] [2021-12-06 19:56:10,204 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1429755569] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:10,204 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:10,205 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:56:10,205 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554188570] [2021-12-06 19:56:10,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:10,205 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:56:10,205 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:10,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:56:10,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:56:10,206 INFO L87 Difference]: Start difference. First operand 1185 states and 1652 transitions. Second operand has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:11,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:11,035 INFO L93 Difference]: Finished difference Result 2066 states and 2795 transitions. [2021-12-06 19:56:11,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:56:11,036 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-06 19:56:11,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:11,044 INFO L225 Difference]: With dead ends: 2066 [2021-12-06 19:56:11,044 INFO L226 Difference]: Without dead ends: 1297 [2021-12-06 19:56:11,047 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:11,048 INFO L933 BasicCegarLoop]: 760 mSDtfsCounter, 1032 mSDsluCounter, 2440 mSDsCounter, 0 mSdLazyCounter, 1534 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1034 SdHoareTripleChecker+Valid, 3200 SdHoareTripleChecker+Invalid, 1688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 1534 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:11,048 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1034 Valid, 3200 Invalid, 1688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 1534 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:56:11,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1297 states. [2021-12-06 19:56:11,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1297 to 1205. [2021-12-06 19:56:11,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1205 states, 1003 states have (on average 1.4227318045862414) internal successors, (1427), 1018 states have internal predecessors, (1427), 111 states have call successors, (111), 75 states have call predecessors, (111), 89 states have return successors, (129), 113 states have call predecessors, (129), 107 states have call successors, (129) [2021-12-06 19:56:11,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1205 states to 1205 states and 1667 transitions. [2021-12-06 19:56:11,110 INFO L78 Accepts]: Start accepts. Automaton has 1205 states and 1667 transitions. Word has length 65 [2021-12-06 19:56:11,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:11,110 INFO L470 AbstractCegarLoop]: Abstraction has 1205 states and 1667 transitions. [2021-12-06 19:56:11,110 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.555555555555555) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:11,110 INFO L276 IsEmpty]: Start isEmpty. Operand 1205 states and 1667 transitions. [2021-12-06 19:56:11,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:56:11,111 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:11,111 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:11,112 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 19:56:11,112 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:11,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:11,112 INFO L85 PathProgramCache]: Analyzing trace with hash 1333389497, now seen corresponding path program 1 times [2021-12-06 19:56:11,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:11,112 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743590409] [2021-12-06 19:56:11,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:11,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:11,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:11,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:11,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:11,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:11,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:11,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:11,212 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:11,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743590409] [2021-12-06 19:56:11,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743590409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:11,213 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:11,213 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:56:11,213 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500767871] [2021-12-06 19:56:11,213 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:11,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:56:11,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:11,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:56:11,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:56:11,215 INFO L87 Difference]: Start difference. First operand 1205 states and 1667 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) [2021-12-06 19:56:12,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:12,010 INFO L93 Difference]: Finished difference Result 2773 states and 3614 transitions. [2021-12-06 19:56:12,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-06 19:56:12,011 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 [2021-12-06 19:56:12,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:12,020 INFO L225 Difference]: With dead ends: 2773 [2021-12-06 19:56:12,020 INFO L226 Difference]: Without dead ends: 1985 [2021-12-06 19:56:12,022 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=95, Invalid=247, Unknown=0, NotChecked=0, Total=342 [2021-12-06 19:56:12,022 INFO L933 BasicCegarLoop]: 771 mSDtfsCounter, 1527 mSDsluCounter, 1868 mSDsCounter, 0 mSdLazyCounter, 1303 mSolverCounterSat, 155 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1557 SdHoareTripleChecker+Valid, 2639 SdHoareTripleChecker+Invalid, 1458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 155 IncrementalHoareTripleChecker+Valid, 1303 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:12,023 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1557 Valid, 2639 Invalid, 1458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [155 Valid, 1303 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:56:12,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2021-12-06 19:56:12,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1653. [2021-12-06 19:56:12,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1653 states, 1356 states have (on average 1.3834808259587021) internal successors, (1876), 1380 states have internal predecessors, (1876), 157 states have call successors, (157), 114 states have call predecessors, (157), 138 states have return successors, (201), 161 states have call predecessors, (201), 153 states have call successors, (201) [2021-12-06 19:56:12,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1653 states to 1653 states and 2234 transitions. [2021-12-06 19:56:12,092 INFO L78 Accepts]: Start accepts. Automaton has 1653 states and 2234 transitions. Word has length 65 [2021-12-06 19:56:12,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:12,092 INFO L470 AbstractCegarLoop]: Abstraction has 1653 states and 2234 transitions. [2021-12-06 19:56:12,092 INFO L471 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) [2021-12-06 19:56:12,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1653 states and 2234 transitions. [2021-12-06 19:56:12,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 19:56:12,093 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:12,093 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:12,093 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 19:56:12,093 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:12,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:12,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1199375991, now seen corresponding path program 1 times [2021-12-06 19:56:12,094 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:12,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174055822] [2021-12-06 19:56:12,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:12,094 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:12,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:12,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:12,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:12,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:12,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:12,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:12,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:12,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:12,163 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:12,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174055822] [2021-12-06 19:56:12,163 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174055822] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:12,163 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:12,163 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:12,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [729117555] [2021-12-06 19:56:12,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:12,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:12,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:12,164 INFO L87 Difference]: Start difference. First operand 1653 states and 2234 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 19:56:12,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:12,510 INFO L93 Difference]: Finished difference Result 4131 states and 5388 transitions. [2021-12-06 19:56:12,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 19:56:12,511 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2021-12-06 19:56:12,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:12,527 INFO L225 Difference]: With dead ends: 4131 [2021-12-06 19:56:12,528 INFO L226 Difference]: Without dead ends: 2897 [2021-12-06 19:56:12,532 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=139, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:56:12,533 INFO L933 BasicCegarLoop]: 736 mSDtfsCounter, 2246 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 267 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2280 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 548 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:12,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2280 Valid, 1493 Invalid, 548 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 267 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:56:12,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2897 states. [2021-12-06 19:56:12,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2897 to 2789. [2021-12-06 19:56:12,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2789 states, 2227 states have (on average 1.3161203412662774) internal successors, (2931), 2273 states have internal predecessors, (2931), 286 states have call successors, (286), 220 states have call predecessors, (286), 274 states have return successors, (415), 300 states have call predecessors, (415), 282 states have call successors, (415) [2021-12-06 19:56:12,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2789 states to 2789 states and 3632 transitions. [2021-12-06 19:56:12,663 INFO L78 Accepts]: Start accepts. Automaton has 2789 states and 3632 transitions. Word has length 65 [2021-12-06 19:56:12,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:12,664 INFO L470 AbstractCegarLoop]: Abstraction has 2789 states and 3632 transitions. [2021-12-06 19:56:12,664 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 4 states have internal predecessors, (50), 4 states have call successors, (8), 5 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 19:56:12,664 INFO L276 IsEmpty]: Start isEmpty. Operand 2789 states and 3632 transitions. [2021-12-06 19:56:12,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 19:56:12,665 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:12,665 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:12,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 19:56:12,665 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:12,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:12,666 INFO L85 PathProgramCache]: Analyzing trace with hash -791607456, now seen corresponding path program 1 times [2021-12-06 19:56:12,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:12,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818866810] [2021-12-06 19:56:12,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:12,666 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:12,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:12,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:12,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:12,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:12,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:12,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:12,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:12,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:12,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:12,723 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:12,723 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818866810] [2021-12-06 19:56:12,723 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818866810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:12,723 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:12,723 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:56:12,723 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551579522] [2021-12-06 19:56:12,723 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:12,724 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:56:12,724 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:12,724 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:56:12,724 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:56:12,724 INFO L87 Difference]: Start difference. First operand 2789 states and 3632 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:13,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:13,214 INFO L93 Difference]: Finished difference Result 6241 states and 7964 transitions. [2021-12-06 19:56:13,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:56:13,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-06 19:56:13,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:13,230 INFO L225 Difference]: With dead ends: 6241 [2021-12-06 19:56:13,230 INFO L226 Difference]: Without dead ends: 3878 [2021-12-06 19:56:13,233 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:56:13,234 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 868 mSDsluCounter, 1452 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 2220 SdHoareTripleChecker+Invalid, 717 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:13,234 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [877 Valid, 2220 Invalid, 717 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:56:13,238 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3878 states. [2021-12-06 19:56:13,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3878 to 3622. [2021-12-06 19:56:13,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3622 states, 2872 states have (on average 1.2959610027855153) internal successors, (3722), 2925 states have internal predecessors, (3722), 378 states have call successors, (378), 300 states have call predecessors, (378), 370 states have return successors, (533), 401 states have call predecessors, (533), 374 states have call successors, (533) [2021-12-06 19:56:13,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3622 states to 3622 states and 4633 transitions. [2021-12-06 19:56:13,398 INFO L78 Accepts]: Start accepts. Automaton has 3622 states and 4633 transitions. Word has length 66 [2021-12-06 19:56:13,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:13,398 INFO L470 AbstractCegarLoop]: Abstraction has 3622 states and 4633 transitions. [2021-12-06 19:56:13,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 3 states have internal predecessors, (51), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:13,398 INFO L276 IsEmpty]: Start isEmpty. Operand 3622 states and 4633 transitions. [2021-12-06 19:56:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2021-12-06 19:56:13,400 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:13,400 INFO L514 BasicCegarLoop]: 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] [2021-12-06 19:56:13,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 19:56:13,401 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:13,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:13,401 INFO L85 PathProgramCache]: Analyzing trace with hash -993648705, now seen corresponding path program 1 times [2021-12-06 19:56:13,401 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:13,401 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806250928] [2021-12-06 19:56:13,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:13,401 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:13,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:13,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:13,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:13,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:13,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:13,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:13,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:13,463 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:13,463 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806250928] [2021-12-06 19:56:13,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806250928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:13,464 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:13,464 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:56:13,464 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053535200] [2021-12-06 19:56:13,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:13,464 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:56:13,465 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:56:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:56:13,465 INFO L87 Difference]: Start difference. First operand 3622 states and 4633 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:13,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:13,783 INFO L93 Difference]: Finished difference Result 7633 states and 9607 transitions. [2021-12-06 19:56:13,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:56:13,783 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2021-12-06 19:56:13,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:13,805 INFO L225 Difference]: With dead ends: 7633 [2021-12-06 19:56:13,805 INFO L226 Difference]: Without dead ends: 4433 [2021-12-06 19:56:13,813 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:56:13,814 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 1463 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1498 SdHoareTripleChecker+Valid, 1916 SdHoareTripleChecker+Invalid, 429 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:13,814 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1498 Valid, 1916 Invalid, 429 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:56:13,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4433 states. [2021-12-06 19:56:13,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4433 to 4185. [2021-12-06 19:56:13,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4185 states, 3319 states have (on average 1.2862307924073517) internal successors, (4269), 3378 states have internal predecessors, (4269), 434 states have call successors, (434), 350 states have call predecessors, (434), 430 states have return successors, (610), 461 states have call predecessors, (610), 430 states have call successors, (610) [2021-12-06 19:56:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4185 states to 4185 states and 5313 transitions. [2021-12-06 19:56:13,993 INFO L78 Accepts]: Start accepts. Automaton has 4185 states and 5313 transitions. Word has length 72 [2021-12-06 19:56:13,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:13,993 INFO L470 AbstractCegarLoop]: Abstraction has 4185 states and 5313 transitions. [2021-12-06 19:56:13,993 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 19:56:13,993 INFO L276 IsEmpty]: Start isEmpty. Operand 4185 states and 5313 transitions. [2021-12-06 19:56:13,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-06 19:56:13,994 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:13,995 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:13,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 19:56:13,995 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:13,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:13,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1255358187, now seen corresponding path program 1 times [2021-12-06 19:56:13,995 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:13,995 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530588513] [2021-12-06 19:56:13,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:13,995 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:14,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:14,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:14,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:14,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:14,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:14,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,049 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:14,049 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:14,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530588513] [2021-12-06 19:56:14,049 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530588513] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:14,049 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:14,049 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:14,049 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [993139651] [2021-12-06 19:56:14,049 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:14,050 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:14,050 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:14,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:14,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:14,050 INFO L87 Difference]: Start difference. First operand 4185 states and 5313 transitions. Second operand has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 19:56:14,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:14,454 INFO L93 Difference]: Finished difference Result 5254 states and 6597 transitions. [2021-12-06 19:56:14,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-06 19:56:14,454 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 73 [2021-12-06 19:56:14,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:14,472 INFO L225 Difference]: With dead ends: 5254 [2021-12-06 19:56:14,472 INFO L226 Difference]: Without dead ends: 5251 [2021-12-06 19:56:14,473 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=141, Unknown=0, NotChecked=0, Total=210 [2021-12-06 19:56:14,474 INFO L933 BasicCegarLoop]: 778 mSDtfsCounter, 2570 mSDsluCounter, 748 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2580 SdHoareTripleChecker+Valid, 1526 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:14,474 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2580 Valid, 1526 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:56:14,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5251 states. [2021-12-06 19:56:14,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5251 to 4942. [2021-12-06 19:56:14,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4942 states, 3897 states have (on average 1.2740569668976136) internal successors, (4965), 3963 states have internal predecessors, (4965), 517 states have call successors, (517), 422 states have call predecessors, (517), 526 states have return successors, (738), 561 states have call predecessors, (738), 514 states have call successors, (738) [2021-12-06 19:56:14,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4942 states to 4942 states and 6220 transitions. [2021-12-06 19:56:14,646 INFO L78 Accepts]: Start accepts. Automaton has 4942 states and 6220 transitions. Word has length 73 [2021-12-06 19:56:14,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:14,647 INFO L470 AbstractCegarLoop]: Abstraction has 4942 states and 6220 transitions. [2021-12-06 19:56:14,647 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.285714285714286) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 19:56:14,647 INFO L276 IsEmpty]: Start isEmpty. Operand 4942 states and 6220 transitions. [2021-12-06 19:56:14,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 19:56:14,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:14,648 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:14,649 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 19:56:14,649 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:14,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:14,649 INFO L85 PathProgramCache]: Analyzing trace with hash -262921527, now seen corresponding path program 1 times [2021-12-06 19:56:14,649 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:14,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1366922729] [2021-12-06 19:56:14,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:14,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:14,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:14,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:14,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:14,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:14,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:14,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:14,726 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:14,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1366922729] [2021-12-06 19:56:14,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1366922729] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:56:14,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003071162] [2021-12-06 19:56:14,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:14,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:56:14,727 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:56:14,728 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:56:14,728 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 19:56:14,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:14,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 415 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-06 19:56:14,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:56:15,031 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:15,031 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-06 19:56:15,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:15,175 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003071162] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-06 19:56:15,175 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-06 19:56:15,175 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 5, 4] total 10 [2021-12-06 19:56:15,175 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875119188] [2021-12-06 19:56:15,175 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-06 19:56:15,175 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 19:56:15,176 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:15,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 19:56:15,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:56:15,176 INFO L87 Difference]: Start difference. First operand 4942 states and 6220 transitions. Second operand has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 19:56:16,436 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:16,437 INFO L93 Difference]: Finished difference Result 9456 states and 11705 transitions. [2021-12-06 19:56:16,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2021-12-06 19:56:16,437 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) Word has length 74 [2021-12-06 19:56:16,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:16,468 INFO L225 Difference]: With dead ends: 9456 [2021-12-06 19:56:16,468 INFO L226 Difference]: Without dead ends: 9453 [2021-12-06 19:56:16,470 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 174 SyntacticMatches, 2 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 189 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2021-12-06 19:56:16,471 INFO L933 BasicCegarLoop]: 930 mSDtfsCounter, 1975 mSDsluCounter, 2539 mSDsCounter, 0 mSdLazyCounter, 2230 mSolverCounterSat, 236 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2042 SdHoareTripleChecker+Valid, 3469 SdHoareTripleChecker+Invalid, 2466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 236 IncrementalHoareTripleChecker+Valid, 2230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:16,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2042 Valid, 3469 Invalid, 2466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [236 Valid, 2230 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-12-06 19:56:16,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9453 states. [2021-12-06 19:56:16,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9453 to 8567. [2021-12-06 19:56:16,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8567 states, 6732 states have (on average 1.2565359477124183) internal successors, (8459), 6849 states have internal predecessors, (8459), 895 states have call successors, (895), 754 states have call predecessors, (895), 938 states have return successors, (1295), 968 states have call predecessors, (1295), 892 states have call successors, (1295) [2021-12-06 19:56:16,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8567 states to 8567 states and 10649 transitions. [2021-12-06 19:56:16,797 INFO L78 Accepts]: Start accepts. Automaton has 8567 states and 10649 transitions. Word has length 74 [2021-12-06 19:56:16,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:16,797 INFO L470 AbstractCegarLoop]: Abstraction has 8567 states and 10649 transitions. [2021-12-06 19:56:16,797 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 12.0) internal successors, (120), 7 states have internal predecessors, (120), 4 states have call successors, (20), 6 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 3 states have call successors, (19) [2021-12-06 19:56:16,797 INFO L276 IsEmpty]: Start isEmpty. Operand 8567 states and 10649 transitions. [2021-12-06 19:56:16,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 19:56:16,800 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:16,800 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:16,822 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 19:56:17,001 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-06 19:56:17,001 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash -385890155, now seen corresponding path program 2 times [2021-12-06 19:56:17,002 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:17,002 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78500504] [2021-12-06 19:56:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:17,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:17,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:17,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:17,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:17,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:17,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,121 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:17,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:17,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78500504] [2021-12-06 19:56:17,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78500504] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:17,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:17,123 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:56:17,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118382820] [2021-12-06 19:56:17,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:17,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:56:17,124 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:17,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:56:17,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:56:17,125 INFO L87 Difference]: Start difference. First operand 8567 states and 10649 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 19:56:17,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:17,567 INFO L93 Difference]: Finished difference Result 11597 states and 14396 transitions. [2021-12-06 19:56:17,567 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:56:17,568 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) Word has length 77 [2021-12-06 19:56:17,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:17,581 INFO L225 Difference]: With dead ends: 11597 [2021-12-06 19:56:17,581 INFO L226 Difference]: Without dead ends: 4799 [2021-12-06 19:56:17,591 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:56:17,591 INFO L933 BasicCegarLoop]: 813 mSDtfsCounter, 1396 mSDsluCounter, 1169 mSDsCounter, 0 mSdLazyCounter, 316 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1433 SdHoareTripleChecker+Valid, 1982 SdHoareTripleChecker+Invalid, 434 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 316 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:17,592 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1433 Valid, 1982 Invalid, 434 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 316 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:56:17,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4799 states. [2021-12-06 19:56:17,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4799 to 3730. [2021-12-06 19:56:17,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3730 states, 2963 states have (on average 1.2666216672291597) internal successors, (3753), 3002 states have internal predecessors, (3753), 394 states have call successors, (394), 318 states have call predecessors, (394), 371 states have return successors, (519), 414 states have call predecessors, (519), 391 states have call successors, (519) [2021-12-06 19:56:17,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3730 states to 3730 states and 4666 transitions. [2021-12-06 19:56:17,771 INFO L78 Accepts]: Start accepts. Automaton has 3730 states and 4666 transitions. Word has length 77 [2021-12-06 19:56:17,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:17,772 INFO L470 AbstractCegarLoop]: Abstraction has 3730 states and 4666 transitions. [2021-12-06 19:56:17,772 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 3 states have internal predecessors, (62), 2 states have call successors, (8), 5 states have call predecessors, (8), 1 states have return successors, (7), 1 states have call predecessors, (7), 1 states have call successors, (7) [2021-12-06 19:56:17,772 INFO L276 IsEmpty]: Start isEmpty. Operand 3730 states and 4666 transitions. [2021-12-06 19:56:17,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2021-12-06 19:56:17,774 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:17,774 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:17,775 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 19:56:17,775 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:17,775 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:17,775 INFO L85 PathProgramCache]: Analyzing trace with hash -870186629, now seen corresponding path program 1 times [2021-12-06 19:56:17,775 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:17,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [640073408] [2021-12-06 19:56:17,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:17,775 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:17,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:17,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:17,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:17,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:17,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:56:17,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:17,840 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2021-12-06 19:56:17,840 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:17,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [640073408] [2021-12-06 19:56:17,840 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [640073408] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:17,840 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:17,840 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-06 19:56:17,840 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [531802590] [2021-12-06 19:56:17,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:17,840 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-06 19:56:17,841 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:17,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-06 19:56:17,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-06 19:56:17,841 INFO L87 Difference]: Start difference. First operand 3730 states and 4666 transitions. Second operand has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 19:56:18,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:18,719 INFO L93 Difference]: Finished difference Result 10338 states and 12689 transitions. [2021-12-06 19:56:18,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-06 19:56:18,720 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 84 [2021-12-06 19:56:18,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:18,734 INFO L225 Difference]: With dead ends: 10338 [2021-12-06 19:56:18,734 INFO L226 Difference]: Without dead ends: 5962 [2021-12-06 19:56:18,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=131, Invalid=331, Unknown=0, NotChecked=0, Total=462 [2021-12-06 19:56:18,741 INFO L933 BasicCegarLoop]: 815 mSDtfsCounter, 1957 mSDsluCounter, 1522 mSDsCounter, 0 mSdLazyCounter, 1091 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1969 SdHoareTripleChecker+Valid, 2337 SdHoareTripleChecker+Invalid, 1447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1091 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:18,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1969 Valid, 2337 Invalid, 1447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1091 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-06 19:56:18,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2021-12-06 19:56:18,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5698. [2021-12-06 19:56:18,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5698 states, 4458 states have (on average 1.2292507851054284) internal successors, (5480), 4540 states have internal predecessors, (5480), 610 states have call successors, (610), 504 states have call predecessors, (610), 628 states have return successors, (903), 658 states have call predecessors, (903), 607 states have call successors, (903) [2021-12-06 19:56:19,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5698 states to 5698 states and 6993 transitions. [2021-12-06 19:56:19,003 INFO L78 Accepts]: Start accepts. Automaton has 5698 states and 6993 transitions. Word has length 84 [2021-12-06 19:56:19,003 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:19,003 INFO L470 AbstractCegarLoop]: Abstraction has 5698 states and 6993 transitions. [2021-12-06 19:56:19,004 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.875) internal successors, (63), 5 states have internal predecessors, (63), 4 states have call successors, (9), 5 states have call predecessors, (9), 2 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 19:56:19,004 INFO L276 IsEmpty]: Start isEmpty. Operand 5698 states and 6993 transitions. [2021-12-06 19:56:19,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-12-06 19:56:19,007 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:19,008 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:19,008 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 19:56:19,008 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:19,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:19,008 INFO L85 PathProgramCache]: Analyzing trace with hash -780260845, now seen corresponding path program 1 times [2021-12-06 19:56:19,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:19,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480587232] [2021-12-06 19:56:19,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:19,009 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:19,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:19,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:19,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:19,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:19,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:19,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-06 19:56:19,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:19,084 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 19:56:19,084 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:19,084 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480587232] [2021-12-06 19:56:19,084 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480587232] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:19,084 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:19,084 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 19:56:19,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026247022] [2021-12-06 19:56:19,084 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:19,084 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 19:56:19,084 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:19,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 19:56:19,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:56:19,085 INFO L87 Difference]: Start difference. First operand 5698 states and 6993 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) [2021-12-06 19:56:20,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:20,042 INFO L93 Difference]: Finished difference Result 9345 states and 11351 transitions. [2021-12-06 19:56:20,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-06 19:56:20,043 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 6 states have internal predecessors, (74), 4 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 93 [2021-12-06 19:56:20,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:20,056 INFO L225 Difference]: With dead ends: 9345 [2021-12-06 19:56:20,056 INFO L226 Difference]: Without dead ends: 4796 [2021-12-06 19:56:20,064 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=162, Invalid=540, Unknown=0, NotChecked=0, Total=702 [2021-12-06 19:56:20,065 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 2031 mSDsluCounter, 2306 mSDsCounter, 0 mSdLazyCounter, 1492 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2071 SdHoareTripleChecker+Valid, 3102 SdHoareTripleChecker+Invalid, 1830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 1492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:20,065 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2071 Valid, 3102 Invalid, 1830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 1492 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-06 19:56:20,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4796 states. [2021-12-06 19:56:20,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4796 to 4365. [2021-12-06 19:56:20,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4365 states, 3411 states have (on average 1.2189973614775726) internal successors, (4158), 3476 states have internal predecessors, (4158), 467 states have call successors, (467), 379 states have call predecessors, (467), 485 states have return successors, (645), 514 states have call predecessors, (645), 464 states have call successors, (645) [2021-12-06 19:56:20,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4365 states to 4365 states and 5270 transitions. [2021-12-06 19:56:20,220 INFO L78 Accepts]: Start accepts. Automaton has 4365 states and 5270 transitions. Word has length 93 [2021-12-06 19:56:20,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:20,220 INFO L470 AbstractCegarLoop]: Abstraction has 4365 states and 5270 transitions. [2021-12-06 19:56:20,221 INFO L471 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) [2021-12-06 19:56:20,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4365 states and 5270 transitions. [2021-12-06 19:56:20,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-06 19:56:20,225 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:20,225 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:20,225 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 19:56:20,225 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:20,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:20,225 INFO L85 PathProgramCache]: Analyzing trace with hash 464257645, now seen corresponding path program 1 times [2021-12-06 19:56:20,225 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:20,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707497687] [2021-12-06 19:56:20,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:20,226 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:20,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:20,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:20,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:20,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:20,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:20,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:56:20,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-06 19:56:20,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-06 19:56:20,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-06 19:56:20,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:20,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:20,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2021-12-06 19:56:20,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2021-12-06 19:56:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2021-12-06 19:56:20,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,326 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 20 proven. 6 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 19:56:20,326 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:20,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707497687] [2021-12-06 19:56:20,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707497687] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:56:20,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1296005406] [2021-12-06 19:56:20,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:20,327 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:56:20,327 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:56:20,328 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:56:20,328 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 19:56:20,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,417 INFO L263 TraceCheckSpWp]: Trace formula consists of 593 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-06 19:56:20,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:56:20,540 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 71 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-06 19:56:20,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:56:20,540 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1296005406] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:20,540 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:56:20,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [10] total 12 [2021-12-06 19:56:20,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1307350880] [2021-12-06 19:56:20,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:20,541 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:56:20,541 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:20,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:56:20,542 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:56:20,542 INFO L87 Difference]: Start difference. First operand 4365 states and 5270 transitions. Second operand has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 19:56:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:20,664 INFO L93 Difference]: Finished difference Result 6585 states and 7909 transitions. [2021-12-06 19:56:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 145 [2021-12-06 19:56:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:20,670 INFO L225 Difference]: With dead ends: 6585 [2021-12-06 19:56:20,670 INFO L226 Difference]: Without dead ends: 2646 [2021-12-06 19:56:20,676 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 185 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-12-06 19:56:20,677 INFO L933 BasicCegarLoop]: 773 mSDtfsCounter, 34 mSDsluCounter, 3055 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 3828 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:20,677 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 3828 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-06 19:56:20,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2646 states. [2021-12-06 19:56:20,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2646 to 2490. [2021-12-06 19:56:20,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2490 states, 2036 states have (on average 1.2426326129666012) internal successors, (2530), 2055 states have internal predecessors, (2530), 229 states have call successors, (229), 173 states have call predecessors, (229), 223 states have return successors, (309), 262 states have call predecessors, (309), 226 states have call successors, (309) [2021-12-06 19:56:20,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2490 states to 2490 states and 3068 transitions. [2021-12-06 19:56:20,765 INFO L78 Accepts]: Start accepts. Automaton has 2490 states and 3068 transitions. Word has length 145 [2021-12-06 19:56:20,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:20,766 INFO L470 AbstractCegarLoop]: Abstraction has 2490 states and 3068 transitions. [2021-12-06 19:56:20,766 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.666666666666668) internal successors, (106), 5 states have internal predecessors, (106), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2021-12-06 19:56:20,766 INFO L276 IsEmpty]: Start isEmpty. Operand 2490 states and 3068 transitions. [2021-12-06 19:56:20,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-06 19:56:20,769 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:20,769 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:20,800 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 19:56:20,969 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-06 19:56:20,969 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:20,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:20,970 INFO L85 PathProgramCache]: Analyzing trace with hash -21978279, now seen corresponding path program 1 times [2021-12-06 19:56:20,970 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:20,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631588913] [2021-12-06 19:56:20,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:20,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:20,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:20,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:21,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:21,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:21,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:21,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 19:56:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-06 19:56:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 19:56:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-06 19:56:21,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:21,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:21,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 19:56:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-06 19:56:21,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 19:56:21,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,051 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2021-12-06 19:56:21,052 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:21,052 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631588913] [2021-12-06 19:56:21,052 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631588913] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:21,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:21,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:56:21,052 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [798035598] [2021-12-06 19:56:21,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:21,053 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:56:21,053 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:21,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:56:21,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:56:21,053 INFO L87 Difference]: Start difference. First operand 2490 states and 3068 transitions. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 19:56:21,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:21,490 INFO L93 Difference]: Finished difference Result 2544 states and 3124 transitions. [2021-12-06 19:56:21,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:21,490 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 147 [2021-12-06 19:56:21,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:21,494 INFO L225 Difference]: With dead ends: 2544 [2021-12-06 19:56:21,494 INFO L226 Difference]: Without dead ends: 2026 [2021-12-06 19:56:21,495 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2021-12-06 19:56:21,496 INFO L933 BasicCegarLoop]: 751 mSDtfsCounter, 1128 mSDsluCounter, 1043 mSDsCounter, 0 mSdLazyCounter, 421 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1142 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:21,496 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1142 Valid, 1794 Invalid, 574 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 421 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-06 19:56:21,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2026 states. [2021-12-06 19:56:21,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2026 to 1975. [2021-12-06 19:56:21,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1975 states, 1639 states have (on average 1.2684563758389262) internal successors, (2079), 1654 states have internal predecessors, (2079), 172 states have call successors, (172), 124 states have call predecessors, (172), 162 states have return successors, (231), 197 states have call predecessors, (231), 169 states have call successors, (231) [2021-12-06 19:56:21,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1975 states to 1975 states and 2482 transitions. [2021-12-06 19:56:21,566 INFO L78 Accepts]: Start accepts. Automaton has 1975 states and 2482 transitions. Word has length 147 [2021-12-06 19:56:21,566 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:21,566 INFO L470 AbstractCegarLoop]: Abstraction has 1975 states and 2482 transitions. [2021-12-06 19:56:21,566 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 3 states have internal predecessors, (69), 3 states have call successors, (13), 5 states have call predecessors, (13), 1 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 19:56:21,566 INFO L276 IsEmpty]: Start isEmpty. Operand 1975 states and 2482 transitions. [2021-12-06 19:56:21,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-06 19:56:21,568 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:21,568 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:21,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 19:56:21,568 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:21,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:21,569 INFO L85 PathProgramCache]: Analyzing trace with hash 848578871, now seen corresponding path program 1 times [2021-12-06 19:56:21,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:21,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217991343] [2021-12-06 19:56:21,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:21,569 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:21,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:21,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:21,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:21,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:21,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:21,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:21,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:21,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:56:21,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 19:56:21,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-06 19:56:21,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-06 19:56:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:21,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:21,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-06 19:56:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-06 19:56:21,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2021-12-06 19:56:21,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:21,641 INFO L134 CoverageAnalysis]: Checked inductivity of 89 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2021-12-06 19:56:21,641 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:21,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217991343] [2021-12-06 19:56:21,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217991343] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:21,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:21,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:21,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [668136571] [2021-12-06 19:56:21,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:21,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:21,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:21,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:21,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:21,643 INFO L87 Difference]: Start difference. First operand 1975 states and 2482 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 19:56:22,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:22,188 INFO L93 Difference]: Finished difference Result 3258 states and 4002 transitions. [2021-12-06 19:56:22,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-06 19:56:22,188 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 159 [2021-12-06 19:56:22,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:22,192 INFO L225 Difference]: With dead ends: 3258 [2021-12-06 19:56:22,192 INFO L226 Difference]: Without dead ends: 1868 [2021-12-06 19:56:22,194 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:56:22,194 INFO L933 BasicCegarLoop]: 783 mSDtfsCounter, 721 mSDsluCounter, 1903 mSDsCounter, 0 mSdLazyCounter, 971 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 722 SdHoareTripleChecker+Valid, 2686 SdHoareTripleChecker+Invalid, 1070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:22,195 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [722 Valid, 2686 Invalid, 1070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 971 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-06 19:56:22,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1868 states. [2021-12-06 19:56:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1868 to 1722. [2021-12-06 19:56:22,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1722 states, 1437 states have (on average 1.2867084203201113) internal successors, (1849), 1452 states have internal predecessors, (1849), 147 states have call successors, (147), 103 states have call predecessors, (147), 136 states have return successors, (193), 167 states have call predecessors, (193), 144 states have call successors, (193) [2021-12-06 19:56:22,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 2189 transitions. [2021-12-06 19:56:22,259 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 2189 transitions. Word has length 159 [2021-12-06 19:56:22,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:22,259 INFO L470 AbstractCegarLoop]: Abstraction has 1722 states and 2189 transitions. [2021-12-06 19:56:22,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 3 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-06 19:56:22,259 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 2189 transitions. [2021-12-06 19:56:22,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2021-12-06 19:56:22,261 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:22,261 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:22,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 19:56:22,261 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting error1Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:22,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:22,261 INFO L85 PathProgramCache]: Analyzing trace with hash 1407928022, now seen corresponding path program 1 times [2021-12-06 19:56:22,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:22,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064075223] [2021-12-06 19:56:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:22,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:22,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:22,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 19:56:22,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 19:56:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:22,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 19:56:22,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-06 19:56:22,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-06 19:56:22,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-06 19:56:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-06 19:56:22,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-06 19:56:22,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 19:56:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 19:56:22,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 19:56:22,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-06 19:56:22,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-06 19:56:22,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,369 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 25 proven. 7 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2021-12-06 19:56:22,370 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064075223] [2021-12-06 19:56:22,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064075223] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 19:56:22,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1512418289] [2021-12-06 19:56:22,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:22,370 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 19:56:22,370 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 19:56:22,371 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 19:56:22,372 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-06 19:56:22,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:22,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 655 conjuncts, 12 conjunts are in the unsatisfiable core [2021-12-06 19:56:22,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 19:56:22,659 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-06 19:56:22,659 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 19:56:22,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1512418289] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:22,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 19:56:22,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [9] total 11 [2021-12-06 19:56:22,660 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117208086] [2021-12-06 19:56:22,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:22,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 19:56:22,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:22,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 19:56:22,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:56:22,661 INFO L87 Difference]: Start difference. First operand 1722 states and 2189 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:56:22,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:22,989 INFO L93 Difference]: Finished difference Result 4048 states and 4997 transitions. [2021-12-06 19:56:22,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 19:56:22,989 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 162 [2021-12-06 19:56:22,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:22,997 INFO L225 Difference]: With dead ends: 4048 [2021-12-06 19:56:22,997 INFO L226 Difference]: Without dead ends: 2638 [2021-12-06 19:56:23,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 205 GetRequests, 195 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2021-12-06 19:56:23,001 INFO L933 BasicCegarLoop]: 759 mSDtfsCounter, 398 mSDsluCounter, 747 mSDsCounter, 0 mSdLazyCounter, 429 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 1506 SdHoareTripleChecker+Invalid, 484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:23,002 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [403 Valid, 1506 Invalid, 484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 429 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-06 19:56:23,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2638 states. [2021-12-06 19:56:23,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2638 to 2596. [2021-12-06 19:56:23,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238929889298893) internal successors, (2686), 2187 states have internal predecessors, (2686), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2021-12-06 19:56:23,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3207 transitions. [2021-12-06 19:56:23,095 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3207 transitions. Word has length 162 [2021-12-06 19:56:23,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:23,095 INFO L470 AbstractCegarLoop]: Abstraction has 2596 states and 3207 transitions. [2021-12-06 19:56:23,095 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-06 19:56:23,096 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3207 transitions. [2021-12-06 19:56:23,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:23,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:23,097 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:23,130 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-06 19:56:23,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d394d9b0-58d5-43eb-97e5-a2ac6dc36466/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-06 19:56:23,299 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:23,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash -60640515, now seen corresponding path program 1 times [2021-12-06 19:56:23,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:23,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738249875] [2021-12-06 19:56:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:23,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:23,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:23,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:23,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:23,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:23,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:23,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:23,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:23,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:23,417 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:23,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738249875] [2021-12-06 19:56:23,418 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1738249875] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:23,418 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:23,418 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:56:23,418 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994049430] [2021-12-06 19:56:23,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:23,418 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:56:23,418 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:23,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:56:23,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:56:23,419 INFO L87 Difference]: Start difference. First operand 2596 states and 3207 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-06 19:56:24,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:24,826 INFO L93 Difference]: Finished difference Result 3150 states and 4107 transitions. [2021-12-06 19:56:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:24,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:24,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:24,830 INFO L225 Difference]: With dead ends: 3150 [2021-12-06 19:56:24,830 INFO L226 Difference]: Without dead ends: 2749 [2021-12-06 19:56:24,831 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:56:24,832 INFO L933 BasicCegarLoop]: 836 mSDtfsCounter, 1217 mSDsluCounter, 625 mSDsCounter, 0 mSdLazyCounter, 830 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 830 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:24,832 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 1461 Invalid, 926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 830 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:56:24,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-12-06 19:56:24,983 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2021-12-06 19:56:24,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.238468634686347) internal successors, (2685), 2187 states have internal predecessors, (2685), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2021-12-06 19:56:24,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3206 transitions. [2021-12-06 19:56:24,989 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3206 transitions. Word has length 190 [2021-12-06 19:56:24,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:24,990 INFO L470 AbstractCegarLoop]: Abstraction has 2596 states and 3206 transitions. [2021-12-06 19:56:24,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-06 19:56:24,990 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3206 transitions. [2021-12-06 19:56:24,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:24,991 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:24,992 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:24,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 19:56:24,992 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:24,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:24,992 INFO L85 PathProgramCache]: Analyzing trace with hash 1287493055, now seen corresponding path program 1 times [2021-12-06 19:56:24,992 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:24,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792502825] [2021-12-06 19:56:24,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:24,992 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:25,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:25,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:25,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:25,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:25,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:25,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:25,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:25,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:25,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:25,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:25,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:25,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:25,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:25,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792502825] [2021-12-06 19:56:25,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792502825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:25,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:25,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-06 19:56:25,092 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129506072] [2021-12-06 19:56:25,092 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:25,092 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-06 19:56:25,092 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:25,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-06 19:56:25,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-06 19:56:25,093 INFO L87 Difference]: Start difference. First operand 2596 states and 3206 transitions. Second operand has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-06 19:56:26,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:26,512 INFO L93 Difference]: Finished difference Result 3142 states and 4090 transitions. [2021-12-06 19:56:26,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:26,512 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:26,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:26,516 INFO L225 Difference]: With dead ends: 3142 [2021-12-06 19:56:26,516 INFO L226 Difference]: Without dead ends: 2749 [2021-12-06 19:56:26,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 19:56:26,518 INFO L933 BasicCegarLoop]: 835 mSDtfsCounter, 1208 mSDsluCounter, 624 mSDsCounter, 0 mSdLazyCounter, 829 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1233 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 829 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:26,518 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1233 Valid, 1459 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [96 Valid, 829 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:56:26,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2749 states. [2021-12-06 19:56:26,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2749 to 2596. [2021-12-06 19:56:26,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2596 states, 2168 states have (on average 1.2380073800738007) internal successors, (2684), 2187 states have internal predecessors, (2684), 217 states have call successors, (217), 154 states have call predecessors, (217), 209 states have return successors, (304), 255 states have call predecessors, (304), 214 states have call successors, (304) [2021-12-06 19:56:26,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2596 states to 2596 states and 3205 transitions. [2021-12-06 19:56:26,693 INFO L78 Accepts]: Start accepts. Automaton has 2596 states and 3205 transitions. Word has length 190 [2021-12-06 19:56:26,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:26,694 INFO L470 AbstractCegarLoop]: Abstraction has 2596 states and 3205 transitions. [2021-12-06 19:56:26,694 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 35.8) internal successors, (179), 3 states have internal predecessors, (179), 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) [2021-12-06 19:56:26,694 INFO L276 IsEmpty]: Start isEmpty. Operand 2596 states and 3205 transitions. [2021-12-06 19:56:26,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:26,695 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:26,695 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:26,695 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 19:56:26,696 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:26,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:26,696 INFO L85 PathProgramCache]: Analyzing trace with hash 2118146689, now seen corresponding path program 1 times [2021-12-06 19:56:26,696 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:26,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [507714555] [2021-12-06 19:56:26,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:26,696 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:26,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:26,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:26,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:26,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:26,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:26,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:26,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:26,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:26,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:26,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:26,800 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:26,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:26,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [507714555] [2021-12-06 19:56:26,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [507714555] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:26,800 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:26,800 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 19:56:26,800 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192910184] [2021-12-06 19:56:26,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:26,801 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 19:56:26,801 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:26,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 19:56:26,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-06 19:56:26,801 INFO L87 Difference]: Start difference. First operand 2596 states and 3205 transitions. Second operand has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-06 19:56:29,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:29,186 INFO L93 Difference]: Finished difference Result 3694 states and 4988 transitions. [2021-12-06 19:56:29,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-06 19:56:29,187 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:29,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:29,193 INFO L225 Difference]: With dead ends: 3694 [2021-12-06 19:56:29,193 INFO L226 Difference]: Without dead ends: 3308 [2021-12-06 19:56:29,195 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:29,195 INFO L933 BasicCegarLoop]: 881 mSDtfsCounter, 1894 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1924 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:29,196 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1924 Valid, 2129 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-12-06 19:56:29,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3308 states. [2021-12-06 19:56:29,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3308 to 3001. [2021-12-06 19:56:29,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3001 states, 2544 states have (on average 1.292059748427673) internal successors, (3287), 2564 states have internal predecessors, (3287), 239 states have call successors, (239), 160 states have call predecessors, (239), 216 states have return successors, (329), 277 states have call predecessors, (329), 236 states have call successors, (329) [2021-12-06 19:56:29,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3001 states to 3001 states and 3855 transitions. [2021-12-06 19:56:29,390 INFO L78 Accepts]: Start accepts. Automaton has 3001 states and 3855 transitions. Word has length 190 [2021-12-06 19:56:29,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:29,390 INFO L470 AbstractCegarLoop]: Abstraction has 3001 states and 3855 transitions. [2021-12-06 19:56:29,390 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 29.833333333333332) internal successors, (179), 4 states have internal predecessors, (179), 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) [2021-12-06 19:56:29,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3001 states and 3855 transitions. [2021-12-06 19:56:29,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:29,392 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:29,392 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:29,392 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 19:56:29,392 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:29,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:29,392 INFO L85 PathProgramCache]: Analyzing trace with hash 271120253, now seen corresponding path program 1 times [2021-12-06 19:56:29,392 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:29,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883627095] [2021-12-06 19:56:29,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:29,393 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:29,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:29,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:29,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:29,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:29,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:29,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:29,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:29,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:29,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:29,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:29,496 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:29,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [883627095] [2021-12-06 19:56:29,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [883627095] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:29,496 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:29,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:29,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1632594924] [2021-12-06 19:56:29,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:29,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:29,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:29,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:29,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:29,497 INFO L87 Difference]: Start difference. First operand 3001 states and 3855 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:32,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:32,402 INFO L93 Difference]: Finished difference Result 4678 states and 6583 transitions. [2021-12-06 19:56:32,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:56:32,402 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:32,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:32,408 INFO L225 Difference]: With dead ends: 4678 [2021-12-06 19:56:32,408 INFO L226 Difference]: Without dead ends: 3887 [2021-12-06 19:56:32,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:56:32,411 INFO L933 BasicCegarLoop]: 1212 mSDtfsCounter, 1925 mSDsluCounter, 2322 mSDsCounter, 0 mSdLazyCounter, 3485 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 3534 SdHoareTripleChecker+Invalid, 3600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 3485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:32,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1955 Valid, 3534 Invalid, 3600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 3485 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-12-06 19:56:32,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3887 states. [2021-12-06 19:56:32,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3887 to 3377. [2021-12-06 19:56:32,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.325492909028018) internal successors, (3832), 2912 states have internal predecessors, (3832), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2021-12-06 19:56:32,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4446 transitions. [2021-12-06 19:56:32,626 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4446 transitions. Word has length 190 [2021-12-06 19:56:32,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:32,626 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 4446 transitions. [2021-12-06 19:56:32,627 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:32,627 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4446 transitions. [2021-12-06 19:56:32,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:32,628 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:32,628 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:32,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 19:56:32,629 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:32,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:32,629 INFO L85 PathProgramCache]: Analyzing trace with hash -1652130177, now seen corresponding path program 1 times [2021-12-06 19:56:32,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:32,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376952282] [2021-12-06 19:56:32,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:32,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:32,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:32,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:32,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:32,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:32,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:32,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:32,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:32,719 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:32,719 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:32,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376952282] [2021-12-06 19:56:32,719 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376952282] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:32,719 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:32,719 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:32,720 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934313642] [2021-12-06 19:56:32,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:32,720 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:32,720 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:32,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:32,720 INFO L87 Difference]: Start difference. First operand 3377 states and 4446 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:34,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:34,281 INFO L93 Difference]: Finished difference Result 5074 states and 7222 transitions. [2021-12-06 19:56:34,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:34,282 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:34,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:34,289 INFO L225 Difference]: With dead ends: 5074 [2021-12-06 19:56:34,289 INFO L226 Difference]: Without dead ends: 3907 [2021-12-06 19:56:34,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:56:34,292 INFO L933 BasicCegarLoop]: 819 mSDtfsCounter, 1654 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1546 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1685 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 1712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:34,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1685 Valid, 1777 Invalid, 1712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1546 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 19:56:34,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3907 states. [2021-12-06 19:56:34,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3907 to 3377. [2021-12-06 19:56:34,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.324455205811138) internal successors, (3829), 2912 states have internal predecessors, (3829), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2021-12-06 19:56:34,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4443 transitions. [2021-12-06 19:56:34,520 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4443 transitions. Word has length 190 [2021-12-06 19:56:34,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:34,520 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 4443 transitions. [2021-12-06 19:56:34,520 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4443 transitions. [2021-12-06 19:56:34,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:34,522 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:34,522 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:34,522 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-06 19:56:34,523 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:34,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:34,523 INFO L85 PathProgramCache]: Analyzing trace with hash 918228797, now seen corresponding path program 1 times [2021-12-06 19:56:34,523 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:34,523 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066862411] [2021-12-06 19:56:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:34,523 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:34,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:34,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:34,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:34,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:34,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:34,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:34,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:34,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:34,627 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:34,627 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:34,627 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066862411] [2021-12-06 19:56:34,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066862411] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:34,628 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:34,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:34,628 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1528505209] [2021-12-06 19:56:34,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:34,628 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:34,628 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:34,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:34,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:34,629 INFO L87 Difference]: Start difference. First operand 3377 states and 4443 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:36,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:36,064 INFO L93 Difference]: Finished difference Result 5070 states and 7206 transitions. [2021-12-06 19:56:36,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:36,064 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:36,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:36,070 INFO L225 Difference]: With dead ends: 5070 [2021-12-06 19:56:36,070 INFO L226 Difference]: Without dead ends: 3903 [2021-12-06 19:56:36,073 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:36,073 INFO L933 BasicCegarLoop]: 765 mSDtfsCounter, 1750 mSDsluCounter, 957 mSDsCounter, 0 mSdLazyCounter, 1485 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1781 SdHoareTripleChecker+Valid, 1722 SdHoareTripleChecker+Invalid, 1652 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 1485 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:36,074 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1781 Valid, 1722 Invalid, 1652 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 1485 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:56:36,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3903 states. [2021-12-06 19:56:36,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3903 to 3377. [2021-12-06 19:56:36,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.323417502594258) internal successors, (3826), 2912 states have internal predecessors, (3826), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2021-12-06 19:56:36,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4440 transitions. [2021-12-06 19:56:36,298 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4440 transitions. Word has length 190 [2021-12-06 19:56:36,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:36,299 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 4440 transitions. [2021-12-06 19:56:36,299 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:36,299 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4440 transitions. [2021-12-06 19:56:36,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:36,300 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:36,301 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:36,301 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 19:56:36,301 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:36,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:36,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1416785599, now seen corresponding path program 1 times [2021-12-06 19:56:36,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:36,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55493064] [2021-12-06 19:56:36,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:36,301 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:36,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:36,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:36,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:36,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:36,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:36,397 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:36,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55493064] [2021-12-06 19:56:36,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55493064] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:36,397 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:36,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:36,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360652224] [2021-12-06 19:56:36,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:36,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:36,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:36,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:36,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:36,398 INFO L87 Difference]: Start difference. First operand 3377 states and 4440 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:37,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:37,923 INFO L93 Difference]: Finished difference Result 5065 states and 7188 transitions. [2021-12-06 19:56:37,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:37,924 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:37,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:37,930 INFO L225 Difference]: With dead ends: 5065 [2021-12-06 19:56:37,930 INFO L226 Difference]: Without dead ends: 3898 [2021-12-06 19:56:37,932 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:37,933 INFO L933 BasicCegarLoop]: 809 mSDtfsCounter, 1653 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1523 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1684 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 1692 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:37,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1684 Valid, 1767 Invalid, 1692 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1523 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:56:37,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3898 states. [2021-12-06 19:56:38,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3898 to 3377. [2021-12-06 19:56:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.322379799377378) internal successors, (3823), 2912 states have internal predecessors, (3823), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2021-12-06 19:56:38,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4437 transitions. [2021-12-06 19:56:38,167 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4437 transitions. Word has length 190 [2021-12-06 19:56:38,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:38,168 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 4437 transitions. [2021-12-06 19:56:38,168 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:38,168 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4437 transitions. [2021-12-06 19:56:38,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:38,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:38,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:38,170 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 19:56:38,170 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:38,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:38,170 INFO L85 PathProgramCache]: Analyzing trace with hash 1987057405, now seen corresponding path program 1 times [2021-12-06 19:56:38,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:38,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919553960] [2021-12-06 19:56:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:38,170 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:38,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:38,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:38,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:38,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:38,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:38,268 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:38,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919553960] [2021-12-06 19:56:38,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919553960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:38,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:38,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:38,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199373614] [2021-12-06 19:56:38,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:38,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:38,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:38,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:38,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:38,269 INFO L87 Difference]: Start difference. First operand 3377 states and 4437 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:39,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:39,791 INFO L93 Difference]: Finished difference Result 5057 states and 7164 transitions. [2021-12-06 19:56:39,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:39,792 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:39,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:39,797 INFO L225 Difference]: With dead ends: 5057 [2021-12-06 19:56:39,797 INFO L226 Difference]: Without dead ends: 3890 [2021-12-06 19:56:39,800 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:39,801 INFO L933 BasicCegarLoop]: 803 mSDtfsCounter, 1649 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 1509 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1680 SdHoareTripleChecker+Valid, 1761 SdHoareTripleChecker+Invalid, 1678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1509 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:39,801 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1680 Valid, 1761 Invalid, 1678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1509 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-06 19:56:39,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3890 states. [2021-12-06 19:56:40,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3890 to 3377. [2021-12-06 19:56:40,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3377 states, 2891 states have (on average 1.321342096160498) internal successors, (3820), 2912 states have internal predecessors, (3820), 261 states have call successors, (261), 166 states have call predecessors, (261), 223 states have return successors, (353), 300 states have call predecessors, (353), 258 states have call successors, (353) [2021-12-06 19:56:40,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3377 states to 3377 states and 4434 transitions. [2021-12-06 19:56:40,039 INFO L78 Accepts]: Start accepts. Automaton has 3377 states and 4434 transitions. Word has length 190 [2021-12-06 19:56:40,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:40,040 INFO L470 AbstractCegarLoop]: Abstraction has 3377 states and 4434 transitions. [2021-12-06 19:56:40,040 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:40,040 INFO L276 IsEmpty]: Start isEmpty. Operand 3377 states and 4434 transitions. [2021-12-06 19:56:40,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:40,041 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:40,042 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:40,042 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 19:56:40,042 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:40,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:40,042 INFO L85 PathProgramCache]: Analyzing trace with hash 1201059515, now seen corresponding path program 1 times [2021-12-06 19:56:40,042 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:40,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027589683] [2021-12-06 19:56:40,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:40,042 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:40,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:40,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:40,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:40,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:40,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:40,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:40,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:40,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:40,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:40,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:40,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:40,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:40,143 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:40,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1027589683] [2021-12-06 19:56:40,143 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1027589683] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:40,143 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:40,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:40,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467911429] [2021-12-06 19:56:40,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:40,144 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:40,144 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:40,144 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:40,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:40,144 INFO L87 Difference]: Start difference. First operand 3377 states and 4434 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:43,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:43,386 INFO L93 Difference]: Finished difference Result 6106 states and 8820 transitions. [2021-12-06 19:56:43,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:56:43,386 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:43,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:43,398 INFO L225 Difference]: With dead ends: 6106 [2021-12-06 19:56:43,398 INFO L226 Difference]: Without dead ends: 4939 [2021-12-06 19:56:43,401 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:43,402 INFO L933 BasicCegarLoop]: 1174 mSDtfsCounter, 1893 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 3400 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1923 SdHoareTripleChecker+Valid, 3492 SdHoareTripleChecker+Invalid, 3522 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:43,402 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1923 Valid, 3492 Invalid, 3522 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3400 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 19:56:43,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4939 states. [2021-12-06 19:56:43,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4939 to 4142. [2021-12-06 19:56:43,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 3598 states have (on average 1.367982212340189) internal successors, (4922), 3621 states have internal predecessors, (4922), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2021-12-06 19:56:43,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 5632 transitions. [2021-12-06 19:56:43,701 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 5632 transitions. Word has length 190 [2021-12-06 19:56:43,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:43,701 INFO L470 AbstractCegarLoop]: Abstraction has 4142 states and 5632 transitions. [2021-12-06 19:56:43,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:43,702 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 5632 transitions. [2021-12-06 19:56:43,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:43,703 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:43,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:43,704 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 19:56:43,704 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:43,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:43,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1868441405, now seen corresponding path program 1 times [2021-12-06 19:56:43,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:43,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541820750] [2021-12-06 19:56:43,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:43,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:43,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:43,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:43,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:43,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:43,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:43,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:43,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:43,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:43,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:43,798 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:43,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541820750] [2021-12-06 19:56:43,798 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541820750] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:43,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:43,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:43,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316387995] [2021-12-06 19:56:43,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:43,799 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:43,799 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:43,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:43,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:43,799 INFO L87 Difference]: Start difference. First operand 4142 states and 5632 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:45,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:45,851 INFO L93 Difference]: Finished difference Result 6855 states and 10003 transitions. [2021-12-06 19:56:45,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:45,852 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:45,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:45,867 INFO L225 Difference]: With dead ends: 6855 [2021-12-06 19:56:45,867 INFO L226 Difference]: Without dead ends: 4923 [2021-12-06 19:56:45,872 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:45,872 INFO L933 BasicCegarLoop]: 796 mSDtfsCounter, 1418 mSDsluCounter, 1221 mSDsCounter, 0 mSdLazyCounter, 1678 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 2017 SdHoareTripleChecker+Invalid, 1803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1678 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:45,872 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 2017 Invalid, 1803 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1678 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-06 19:56:45,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4923 states. [2021-12-06 19:56:46,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4923 to 4142. [2021-12-06 19:56:46,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4142 states, 3598 states have (on average 1.3665925514174542) internal successors, (4917), 3621 states have internal predecessors, (4917), 305 states have call successors, (305), 178 states have call predecessors, (305), 237 states have return successors, (405), 346 states have call predecessors, (405), 302 states have call successors, (405) [2021-12-06 19:56:46,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4142 states to 4142 states and 5627 transitions. [2021-12-06 19:56:46,203 INFO L78 Accepts]: Start accepts. Automaton has 4142 states and 5627 transitions. Word has length 190 [2021-12-06 19:56:46,204 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:46,204 INFO L470 AbstractCegarLoop]: Abstraction has 4142 states and 5627 transitions. [2021-12-06 19:56:46,204 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:46,204 INFO L276 IsEmpty]: Start isEmpty. Operand 4142 states and 5627 transitions. [2021-12-06 19:56:46,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:46,206 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:46,206 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:46,206 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 19:56:46,206 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:46,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:46,207 INFO L85 PathProgramCache]: Analyzing trace with hash -326787461, now seen corresponding path program 1 times [2021-12-06 19:56:46,207 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:46,207 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [965182904] [2021-12-06 19:56:46,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:46,207 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:46,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:46,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:46,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:46,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:46,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:46,297 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:46,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [965182904] [2021-12-06 19:56:46,297 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [965182904] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:46,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:46,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:46,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1153454383] [2021-12-06 19:56:46,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:46,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:46,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:46,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:46,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:46,299 INFO L87 Difference]: Start difference. First operand 4142 states and 5627 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:49,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:49,680 INFO L93 Difference]: Finished difference Result 8889 states and 13196 transitions. [2021-12-06 19:56:49,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:56:49,680 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:49,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:49,694 INFO L225 Difference]: With dead ends: 8889 [2021-12-06 19:56:49,694 INFO L226 Difference]: Without dead ends: 6957 [2021-12-06 19:56:49,699 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:56:49,699 INFO L933 BasicCegarLoop]: 1163 mSDtfsCounter, 1885 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 3373 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1915 SdHoareTripleChecker+Valid, 3481 SdHoareTripleChecker+Invalid, 3495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:49,699 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1915 Valid, 3481 Invalid, 3495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3373 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 19:56:49,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6957 states. [2021-12-06 19:56:50,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6957 to 5670. [2021-12-06 19:56:50,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5670 states, 5010 states have (on average 1.418562874251497) internal successors, (7107), 5037 states have internal predecessors, (7107), 393 states have call successors, (393), 202 states have call predecessors, (393), 265 states have return successors, (515), 438 states have call predecessors, (515), 390 states have call successors, (515) [2021-12-06 19:56:50,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5670 states to 5670 states and 8015 transitions. [2021-12-06 19:56:50,147 INFO L78 Accepts]: Start accepts. Automaton has 5670 states and 8015 transitions. Word has length 190 [2021-12-06 19:56:50,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:50,147 INFO L470 AbstractCegarLoop]: Abstraction has 5670 states and 8015 transitions. [2021-12-06 19:56:50,147 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:50,147 INFO L276 IsEmpty]: Start isEmpty. Operand 5670 states and 8015 transitions. [2021-12-06 19:56:50,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:50,150 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:50,150 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:50,150 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 19:56:50,150 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:50,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:50,150 INFO L85 PathProgramCache]: Analyzing trace with hash 18040701, now seen corresponding path program 1 times [2021-12-06 19:56:50,150 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:50,150 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421169825] [2021-12-06 19:56:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:50,150 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:50,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:50,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:50,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:50,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:50,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:50,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:50,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:50,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:50,241 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:50,241 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:50,241 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421169825] [2021-12-06 19:56:50,242 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421169825] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:50,242 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:50,242 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:50,242 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1565920205] [2021-12-06 19:56:50,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:50,242 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:50,242 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:50,242 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:50,242 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:50,243 INFO L87 Difference]: Start difference. First operand 5670 states and 8015 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:54,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:54,140 INFO L93 Difference]: Finished difference Result 14459 states and 21998 transitions. [2021-12-06 19:56:54,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:56:54,140 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:54,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:54,173 INFO L225 Difference]: With dead ends: 14459 [2021-12-06 19:56:54,174 INFO L226 Difference]: Without dead ends: 10999 [2021-12-06 19:56:54,180 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:56:54,180 INFO L933 BasicCegarLoop]: 1158 mSDtfsCounter, 1884 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 3365 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1914 SdHoareTripleChecker+Valid, 3476 SdHoareTripleChecker+Invalid, 3487 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 3365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:54,181 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1914 Valid, 3476 Invalid, 3487 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 3365 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 19:56:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10999 states. [2021-12-06 19:56:54,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10999 to 8731. [2021-12-06 19:56:54,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8731 states, 7839 states have (on average 1.4661308840413318) internal successors, (11493), 7874 states have internal predecessors, (11493), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2021-12-06 19:56:54,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8731 states to 8731 states and 12815 transitions. [2021-12-06 19:56:54,944 INFO L78 Accepts]: Start accepts. Automaton has 8731 states and 12815 transitions. Word has length 190 [2021-12-06 19:56:54,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:54,944 INFO L470 AbstractCegarLoop]: Abstraction has 8731 states and 12815 transitions. [2021-12-06 19:56:54,944 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:54,944 INFO L276 IsEmpty]: Start isEmpty. Operand 8731 states and 12815 transitions. [2021-12-06 19:56:54,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:54,948 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:54,948 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:54,948 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 19:56:54,948 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:54,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:54,948 INFO L85 PathProgramCache]: Analyzing trace with hash 998995515, now seen corresponding path program 1 times [2021-12-06 19:56:54,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:54,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1184652986] [2021-12-06 19:56:54,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:54,949 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:54,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:54,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:54,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:54,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:54,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:55,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:55,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:55,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:55,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:55,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:55,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:55,038 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:55,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1184652986] [2021-12-06 19:56:55,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1184652986] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:55,038 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:55,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:55,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490907735] [2021-12-06 19:56:55,039 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:55,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:55,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:55,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:55,039 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:55,039 INFO L87 Difference]: Start difference. First operand 8731 states and 12815 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:57,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:56:57,695 INFO L93 Difference]: Finished difference Result 17603 states and 27036 transitions. [2021-12-06 19:56:57,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:56:57,695 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:56:57,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:56:57,717 INFO L225 Difference]: With dead ends: 17603 [2021-12-06 19:56:57,717 INFO L226 Difference]: Without dead ends: 11082 [2021-12-06 19:56:57,726 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:56:57,726 INFO L933 BasicCegarLoop]: 752 mSDtfsCounter, 1484 mSDsluCounter, 1220 mSDsCounter, 0 mSdLazyCounter, 1583 mSolverCounterSat, 126 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1515 SdHoareTripleChecker+Valid, 1972 SdHoareTripleChecker+Invalid, 1709 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 126 IncrementalHoareTripleChecker+Valid, 1583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:56:57,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1515 Valid, 1972 Invalid, 1709 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [126 Valid, 1583 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 19:56:57,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11082 states. [2021-12-06 19:56:58,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11082 to 8731. [2021-12-06 19:56:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8731 states, 7839 states have (on average 1.463962240081643) internal successors, (11476), 7874 states have internal predecessors, (11476), 569 states have call successors, (569), 250 states have call predecessors, (569), 321 states have return successors, (753), 622 states have call predecessors, (753), 566 states have call successors, (753) [2021-12-06 19:56:58,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8731 states to 8731 states and 12798 transitions. [2021-12-06 19:56:58,475 INFO L78 Accepts]: Start accepts. Automaton has 8731 states and 12798 transitions. Word has length 190 [2021-12-06 19:56:58,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:56:58,475 INFO L470 AbstractCegarLoop]: Abstraction has 8731 states and 12798 transitions. [2021-12-06 19:56:58,475 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:56:58,476 INFO L276 IsEmpty]: Start isEmpty. Operand 8731 states and 12798 transitions. [2021-12-06 19:56:58,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:56:58,479 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:56:58,479 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:56:58,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 19:56:58,479 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:56:58,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:56:58,479 INFO L85 PathProgramCache]: Analyzing trace with hash -770476099, now seen corresponding path program 1 times [2021-12-06 19:56:58,479 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:56:58,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [8959382] [2021-12-06 19:56:58,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:56:58,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:56:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:58,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:56:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:58,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:56:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:58,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:56:58,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:58,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:56:58,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:58,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:56:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:56:58,568 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:56:58,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:56:58,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [8959382] [2021-12-06 19:56:58,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [8959382] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:56:58,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:56:58,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:56:58,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588412436] [2021-12-06 19:56:58,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:56:58,569 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:56:58,569 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:56:58,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:56:58,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:56:58,569 INFO L87 Difference]: Start difference. First operand 8731 states and 12798 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:03,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:57:03,406 INFO L93 Difference]: Finished difference Result 25580 states and 39540 transitions. [2021-12-06 19:57:03,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 19:57:03,406 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:57:03,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:57:03,441 INFO L225 Difference]: With dead ends: 25580 [2021-12-06 19:57:03,441 INFO L226 Difference]: Without dead ends: 19059 [2021-12-06 19:57:03,454 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-12-06 19:57:03,454 INFO L933 BasicCegarLoop]: 1145 mSDtfsCounter, 1879 mSDsluCounter, 2318 mSDsCounter, 0 mSdLazyCounter, 3335 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1909 SdHoareTripleChecker+Valid, 3463 SdHoareTripleChecker+Invalid, 3460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 3335 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:57:03,454 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1909 Valid, 3463 Invalid, 3460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 3335 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 19:57:03,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19059 states. [2021-12-06 19:57:04,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19059 to 14885. [2021-12-06 19:57:04,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14885 states, 13529 states have (on average 1.498410821198906) internal successors, (20272), 13580 states have internal predecessors, (20272), 921 states have call successors, (921), 346 states have call predecessors, (921), 433 states have return successors, (1283), 990 states have call predecessors, (1283), 918 states have call successors, (1283) [2021-12-06 19:57:04,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14885 states to 14885 states and 22476 transitions. [2021-12-06 19:57:04,783 INFO L78 Accepts]: Start accepts. Automaton has 14885 states and 22476 transitions. Word has length 190 [2021-12-06 19:57:04,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:57:04,784 INFO L470 AbstractCegarLoop]: Abstraction has 14885 states and 22476 transitions. [2021-12-06 19:57:04,784 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:04,784 INFO L276 IsEmpty]: Start isEmpty. Operand 14885 states and 22476 transitions. [2021-12-06 19:57:04,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:57:04,789 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:57:04,789 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:57:04,789 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2021-12-06 19:57:04,790 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:57:04,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:57:04,790 INFO L85 PathProgramCache]: Analyzing trace with hash -1381745157, now seen corresponding path program 1 times [2021-12-06 19:57:04,790 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:57:04,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490003356] [2021-12-06 19:57:04,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:04,790 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:57:04,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:04,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:57:04,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:04,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:57:04,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:04,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:57:04,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:57:04,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:04,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:57:04,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:04,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:57:04,890 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:57:04,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490003356] [2021-12-06 19:57:04,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490003356] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:57:04,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:57:04,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:57:04,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [756042326] [2021-12-06 19:57:04,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:57:04,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:57:04,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:57:04,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:57:04,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:57:04,891 INFO L87 Difference]: Start difference. First operand 14885 states and 22476 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:13,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:57:13,626 INFO L93 Difference]: Finished difference Result 53938 states and 84306 transitions. [2021-12-06 19:57:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:57:13,626 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:57:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:57:13,705 INFO L225 Difference]: With dead ends: 53938 [2021-12-06 19:57:13,705 INFO L226 Difference]: Without dead ends: 41263 [2021-12-06 19:57:13,731 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:57:13,731 INFO L933 BasicCegarLoop]: 1350 mSDtfsCounter, 2007 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 3931 mSolverCounterSat, 127 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2036 SdHoareTripleChecker+Valid, 3660 SdHoareTripleChecker+Invalid, 4058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 127 IncrementalHoareTripleChecker+Valid, 3931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 19:57:13,732 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2036 Valid, 3660 Invalid, 4058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [127 Valid, 3931 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 19:57:13,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41263 states. [2021-12-06 19:57:16,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41263 to 27159. [2021-12-06 19:57:16,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27159 states, 24907 states have (on average 1.5219817721925564) internal successors, (37908), 24990 states have internal predecessors, (37908), 1593 states have call successors, (1593), 538 states have call predecessors, (1593), 657 states have return successors, (2473), 1694 states have call predecessors, (2473), 1590 states have call successors, (2473) [2021-12-06 19:57:16,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27159 states to 27159 states and 41974 transitions. [2021-12-06 19:57:16,481 INFO L78 Accepts]: Start accepts. Automaton has 27159 states and 41974 transitions. Word has length 190 [2021-12-06 19:57:16,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:57:16,481 INFO L470 AbstractCegarLoop]: Abstraction has 27159 states and 41974 transitions. [2021-12-06 19:57:16,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:16,482 INFO L276 IsEmpty]: Start isEmpty. Operand 27159 states and 41974 transitions. [2021-12-06 19:57:16,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:57:16,491 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:57:16,491 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:57:16,491 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2021-12-06 19:57:16,491 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:57:16,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:57:16,491 INFO L85 PathProgramCache]: Analyzing trace with hash 512588729, now seen corresponding path program 1 times [2021-12-06 19:57:16,492 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:57:16,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31779772] [2021-12-06 19:57:16,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:16,492 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:57:16,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:57:16,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:16,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:57:16,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:16,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:57:16,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:16,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:57:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:16,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:57:16,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:16,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:57:16,584 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:57:16,584 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31779772] [2021-12-06 19:57:16,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31779772] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:57:16,584 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:57:16,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:57:16,584 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [196300308] [2021-12-06 19:57:16,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:57:16,585 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:57:16,585 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:57:16,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:57:16,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:57:16,585 INFO L87 Difference]: Start difference. First operand 27159 states and 41974 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:30,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:57:30,483 INFO L93 Difference]: Finished difference Result 103554 states and 163562 transitions. [2021-12-06 19:57:30,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:57:30,483 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:57:30,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:57:30,678 INFO L225 Difference]: With dead ends: 103554 [2021-12-06 19:57:30,678 INFO L226 Difference]: Without dead ends: 78605 [2021-12-06 19:57:30,740 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:57:30,741 INFO L933 BasicCegarLoop]: 1128 mSDtfsCounter, 2358 mSDsluCounter, 2307 mSDsCounter, 0 mSdLazyCounter, 3301 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2402 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 3431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3301 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:57:30,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2402 Valid, 3435 Invalid, 3431 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3301 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 19:57:30,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78605 states. [2021-12-06 19:57:36,081 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78605 to 51160. [2021-12-06 19:57:36,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51160 states, 47148 states have (on average 1.5336811741749385) internal successors, (72310), 47295 states have internal predecessors, (72310), 2905 states have call successors, (2905), 922 states have call predecessors, (2905), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2021-12-06 19:57:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51160 states to 51160 states and 80522 transitions. [2021-12-06 19:57:36,235 INFO L78 Accepts]: Start accepts. Automaton has 51160 states and 80522 transitions. Word has length 190 [2021-12-06 19:57:36,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:57:36,235 INFO L470 AbstractCegarLoop]: Abstraction has 51160 states and 80522 transitions. [2021-12-06 19:57:36,235 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:36,235 INFO L276 IsEmpty]: Start isEmpty. Operand 51160 states and 80522 transitions. [2021-12-06 19:57:36,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:57:36,252 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:57:36,252 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:57:36,252 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-06 19:57:36,252 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:57:36,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:57:36,252 INFO L85 PathProgramCache]: Analyzing trace with hash 1959169595, now seen corresponding path program 1 times [2021-12-06 19:57:36,253 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:57:36,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581431928] [2021-12-06 19:57:36,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:36,253 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:57:36,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:36,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:57:36,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:57:36,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:57:36,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:36,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:57:36,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:36,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:57:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:36,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:57:36,346 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:57:36,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581431928] [2021-12-06 19:57:36,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581431928] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:57:36,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:57:36,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:57:36,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1318618109] [2021-12-06 19:57:36,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:57:36,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:57:36,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:57:36,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:57:36,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:57:36,347 INFO L87 Difference]: Start difference. First operand 51160 states and 80522 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:46,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:57:46,220 INFO L93 Difference]: Finished difference Result 116115 states and 186679 transitions. [2021-12-06 19:57:46,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 19:57:46,221 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:57:46,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:57:46,387 INFO L225 Difference]: With dead ends: 116115 [2021-12-06 19:57:46,387 INFO L226 Difference]: Without dead ends: 67165 [2021-12-06 19:57:46,468 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-12-06 19:57:46,468 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 1418 mSDsluCounter, 1219 mSDsCounter, 0 mSdLazyCounter, 1612 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1449 SdHoareTripleChecker+Valid, 1988 SdHoareTripleChecker+Invalid, 1742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1612 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-06 19:57:46,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1449 Valid, 1988 Invalid, 1742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1612 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-06 19:57:46,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67165 states. [2021-12-06 19:57:51,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67165 to 51160. [2021-12-06 19:57:51,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51160 states, 47148 states have (on average 1.53094510901841) internal successors, (72181), 47295 states have internal predecessors, (72181), 2905 states have call successors, (2905), 922 states have call predecessors, (2905), 1105 states have return successors, (5307), 3070 states have call predecessors, (5307), 2902 states have call successors, (5307) [2021-12-06 19:57:51,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51160 states to 51160 states and 80393 transitions. [2021-12-06 19:57:51,835 INFO L78 Accepts]: Start accepts. Automaton has 51160 states and 80393 transitions. Word has length 190 [2021-12-06 19:57:51,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:57:51,835 INFO L470 AbstractCegarLoop]: Abstraction has 51160 states and 80393 transitions. [2021-12-06 19:57:51,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:57:51,835 INFO L276 IsEmpty]: Start isEmpty. Operand 51160 states and 80393 transitions. [2021-12-06 19:57:51,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:57:51,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:57:51,851 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:57:51,852 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-06 19:57:51,852 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:57:51,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:57:51,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1036002169, now seen corresponding path program 1 times [2021-12-06 19:57:51,852 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:57:51,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1701302783] [2021-12-06 19:57:51,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:57:51,852 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:57:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:57:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:51,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:57:51,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:51,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:57:51,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:51,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:57:51,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:57:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:57:51,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:57:51,940 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:57:51,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1701302783] [2021-12-06 19:57:51,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1701302783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:57:51,940 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:57:51,940 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:57:51,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472572100] [2021-12-06 19:57:51,941 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:57:51,941 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:57:51,941 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:57:51,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:57:51,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:57:51,941 INFO L87 Difference]: Start difference. First operand 51160 states and 80393 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:58:17,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:58:17,170 INFO L93 Difference]: Finished difference Result 198143 states and 315912 transitions. [2021-12-06 19:58:17,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:58:17,170 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:58:17,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:58:17,594 INFO L225 Difference]: With dead ends: 198143 [2021-12-06 19:58:17,594 INFO L226 Difference]: Without dead ends: 149193 [2021-12-06 19:58:17,731 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:58:17,731 INFO L933 BasicCegarLoop]: 1118 mSDtfsCounter, 2273 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 3275 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 3428 SdHoareTripleChecker+Invalid, 3405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3275 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-06 19:58:17,731 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2317 Valid, 3428 Invalid, 3405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3275 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2021-12-06 19:58:17,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149193 states. [2021-12-06 19:58:28,653 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149193 to 99738. [2021-12-06 19:58:28,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99738 states, 92270 states have (on average 1.5383656659802754) internal successors, (141945), 92545 states have internal predecessors, (141945), 5465 states have call successors, (5465), 1690 states have call predecessors, (5465), 2001 states have return successors, (12369), 5758 states have call predecessors, (12369), 5462 states have call successors, (12369) [2021-12-06 19:58:29,002 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99738 states to 99738 states and 159779 transitions. [2021-12-06 19:58:29,005 INFO L78 Accepts]: Start accepts. Automaton has 99738 states and 159779 transitions. Word has length 190 [2021-12-06 19:58:29,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:58:29,005 INFO L470 AbstractCegarLoop]: Abstraction has 99738 states and 159779 transitions. [2021-12-06 19:58:29,005 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:58:29,005 INFO L276 IsEmpty]: Start isEmpty. Operand 99738 states and 159779 transitions. [2021-12-06 19:58:29,031 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:58:29,031 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:58:29,031 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:58:29,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-06 19:58:29,031 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:58:29,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:58:29,032 INFO L85 PathProgramCache]: Analyzing trace with hash 1421864571, now seen corresponding path program 1 times [2021-12-06 19:58:29,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:58:29,032 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994825738] [2021-12-06 19:58:29,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:58:29,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:58:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:58:29,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:29,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:58:29,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:29,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:58:29,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:29,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:58:29,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:29,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:58:29,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:58:29,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:58:29,122 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:58:29,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994825738] [2021-12-06 19:58:29,122 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994825738] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:58:29,122 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:58:29,122 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:58:29,123 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221129761] [2021-12-06 19:58:29,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:58:29,123 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:58:29,123 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:58:29,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:58:29,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:58:29,124 INFO L87 Difference]: Start difference. First operand 99738 states and 159779 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:59:16,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 19:59:16,929 INFO L93 Difference]: Finished difference Result 388415 states and 628832 transitions. [2021-12-06 19:59:16,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 19:59:16,929 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 19:59:16,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 19:59:17,914 INFO L225 Difference]: With dead ends: 388415 [2021-12-06 19:59:17,914 INFO L226 Difference]: Without dead ends: 290887 [2021-12-06 19:59:18,238 INFO L932 BasicCegarLoop]: 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 [2021-12-06 19:59:18,239 INFO L933 BasicCegarLoop]: 1113 mSDtfsCounter, 2233 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 3267 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2277 SdHoareTripleChecker+Valid, 3423 SdHoareTripleChecker+Invalid, 3397 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 3267 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 19:59:18,239 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2277 Valid, 3423 Invalid, 3397 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 3267 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 19:59:18,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290887 states. [2021-12-06 19:59:40,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290887 to 196763. [2021-12-06 19:59:40,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196763 states, 182511 states have (on average 1.5428933050610647) internal successors, (281595), 183042 states have internal predecessors, (281595), 10457 states have call successors, (10457), 3226 states have call predecessors, (10457), 3793 states have return successors, (30739), 11006 states have call predecessors, (30739), 10454 states have call successors, (30739) [2021-12-06 19:59:41,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196763 states to 196763 states and 322791 transitions. [2021-12-06 19:59:41,776 INFO L78 Accepts]: Start accepts. Automaton has 196763 states and 322791 transitions. Word has length 190 [2021-12-06 19:59:41,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 19:59:41,777 INFO L470 AbstractCegarLoop]: Abstraction has 196763 states and 322791 transitions. [2021-12-06 19:59:41,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 19:59:41,777 INFO L276 IsEmpty]: Start isEmpty. Operand 196763 states and 322791 transitions. [2021-12-06 19:59:41,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 19:59:41,826 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 19:59:41,827 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 19:59:41,827 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2021-12-06 19:59:41,827 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 19:59:41,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 19:59:41,827 INFO L85 PathProgramCache]: Analyzing trace with hash 1157217081, now seen corresponding path program 1 times [2021-12-06 19:59:41,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 19:59:41,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501859663] [2021-12-06 19:59:41,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 19:59:41,828 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 19:59:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 19:59:41,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 19:59:41,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 19:59:41,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 19:59:41,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 19:59:41,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 19:59:41,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 19:59:41,926 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 19:59:41,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501859663] [2021-12-06 19:59:41,926 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501859663] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 19:59:41,926 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 19:59:41,926 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 19:59:41,926 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433014472] [2021-12-06 19:59:41,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 19:59:41,927 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 19:59:41,927 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 19:59:41,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 19:59:41,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 19:59:41,927 INFO L87 Difference]: Start difference. First operand 196763 states and 322791 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 20:01:16,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:01:16,912 INFO L93 Difference]: Finished difference Result 764222 states and 1264614 transitions. [2021-12-06 20:01:16,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:01:16,912 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 20:01:16,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:01:19,169 INFO L225 Difference]: With dead ends: 764222 [2021-12-06 20:01:19,170 INFO L226 Difference]: Without dead ends: 569669 [2021-12-06 20:01:19,796 INFO L932 BasicCegarLoop]: 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 [2021-12-06 20:01:19,796 INFO L933 BasicCegarLoop]: 1009 mSDtfsCounter, 2035 mSDsluCounter, 1607 mSDsCounter, 0 mSdLazyCounter, 3410 mSolverCounterSat, 167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2064 SdHoareTripleChecker+Valid, 2616 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 167 IncrementalHoareTripleChecker+Valid, 3410 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:01:19,796 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2064 Valid, 2616 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [167 Valid, 3410 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 20:01:20,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 569669 states. [2021-12-06 20:02:06,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 569669 to 390556. [2021-12-06 20:02:06,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390556 states, 362992 states have (on average 1.5458990831753867) internal successors, (561149), 364035 states have internal predecessors, (561149), 20185 states have call successors, (20185), 6298 states have call predecessors, (20185), 7377 states have return successors, (80345), 21246 states have call predecessors, (80345), 20182 states have call successors, (80345) [2021-12-06 20:02:08,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390556 states to 390556 states and 661679 transitions. [2021-12-06 20:02:08,778 INFO L78 Accepts]: Start accepts. Automaton has 390556 states and 661679 transitions. Word has length 190 [2021-12-06 20:02:08,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:02:08,779 INFO L470 AbstractCegarLoop]: Abstraction has 390556 states and 661679 transitions. [2021-12-06 20:02:08,779 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 20:02:08,779 INFO L276 IsEmpty]: Start isEmpty. Operand 390556 states and 661679 transitions. [2021-12-06 20:02:08,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 20:02:08,912 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:02:08,913 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:02:08,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-06 20:02:08,913 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:02:08,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:02:08,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1206624581, now seen corresponding path program 1 times [2021-12-06 20:02:08,913 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:02:08,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7525077] [2021-12-06 20:02:08,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:02:08,914 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:02:08,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:02:08,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:02:08,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:02:08,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 20:02:08,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:02:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 20:02:09,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:02:09,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 20:02:09,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:02:09,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:02:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:02:09,023 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:02:09,023 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:02:09,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [7525077] [2021-12-06 20:02:09,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [7525077] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:02:09,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:02:09,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:02:09,024 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374433225] [2021-12-06 20:02:09,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:02:09,024 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:02:09,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:02:09,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:02:09,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:02:09,025 INFO L87 Difference]: Start difference. First operand 390556 states and 661679 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 20:05:19,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:05:19,616 INFO L93 Difference]: Finished difference Result 1506365 states and 2573564 transitions. [2021-12-06 20:05:19,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:05:19,616 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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 190 [2021-12-06 20:05:19,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:05:24,800 INFO L225 Difference]: With dead ends: 1506365 [2021-12-06 20:05:24,800 INFO L226 Difference]: Without dead ends: 1118019 [2021-12-06 20:05:26,568 INFO L932 BasicCegarLoop]: 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 [2021-12-06 20:05:26,568 INFO L933 BasicCegarLoop]: 1101 mSDtfsCounter, 2156 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 3248 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2200 SdHoareTripleChecker+Valid, 3411 SdHoareTripleChecker+Invalid, 3381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 3248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:05:26,569 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2200 Valid, 3411 Invalid, 3381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 3248 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 20:05:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1118019 states. [2021-12-06 20:07:06,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1118019 to 777629. [2021-12-06 20:07:07,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 777629 states, 723953 states have (on average 1.5481212178138637) internal successors, (1120767), 726020 states have internal predecessors, (1120767), 39129 states have call successors, (39129), 12442 states have call predecessors, (39129), 14545 states have return successors, (218411), 41214 states have call predecessors, (218411), 39126 states have call successors, (218411) [2021-12-06 20:07:11,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 777629 states to 777629 states and 1378307 transitions. [2021-12-06 20:07:11,725 INFO L78 Accepts]: Start accepts. Automaton has 777629 states and 1378307 transitions. Word has length 190 [2021-12-06 20:07:11,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:07:11,725 INFO L470 AbstractCegarLoop]: Abstraction has 777629 states and 1378307 transitions. [2021-12-06 20:07:11,725 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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) [2021-12-06 20:07:11,725 INFO L276 IsEmpty]: Start isEmpty. Operand 777629 states and 1378307 transitions. [2021-12-06 20:07:11,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 191 [2021-12-06 20:07:11,955 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:07:11,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-06 20:07:11,955 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2021-12-06 20:07:11,955 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting error2Err0ASSERT_VIOLATIONERROR_FUNCTION === [error1Err0ASSERT_VIOLATIONERROR_FUNCTION, error2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:07:11,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:07:11,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1765163769, now seen corresponding path program 1 times [2021-12-06 20:07:11,956 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:07:11,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2101903698] [2021-12-06 20:07:11,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:07:11,956 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:07:11,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:11,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-06 20:07:11,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:12,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2021-12-06 20:07:12,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:12,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 20:07:12,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:12,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2021-12-06 20:07:12,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:12,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2021-12-06 20:07:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:07:12,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:07:12,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:07:12,056 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2101903698] [2021-12-06 20:07:12,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2101903698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:07:12,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:07:12,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:07:12,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202833107] [2021-12-06 20:07:12,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:07:12,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:07:12,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:07:12,058 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:07:12,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:07:12,058 INFO L87 Difference]: Start difference. First operand 777629 states and 1378307 transitions. Second operand has 7 states, 7 states have (on average 25.571428571428573) internal successors, (179), 5 states have internal predecessors, (179), 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)