./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product26.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_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/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_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/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_0cdaca09-1f01-40bc-8962-35aff042e0d3/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 d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-12-06 20:27:19,281 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-06 20:27:19,283 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-06 20:27:19,306 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-06 20:27:19,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-06 20:27:19,307 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-06 20:27:19,308 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-06 20:27:19,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-06 20:27:19,312 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-06 20:27:19,313 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-06 20:27:19,313 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-06 20:27:19,315 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-06 20:27:19,315 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-06 20:27:19,316 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-06 20:27:19,317 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-06 20:27:19,318 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-06 20:27:19,319 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-06 20:27:19,320 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-06 20:27:19,322 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-06 20:27:19,324 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-06 20:27:19,325 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-06 20:27:19,327 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-06 20:27:19,328 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-06 20:27:19,328 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-06 20:27:19,331 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-06 20:27:19,332 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-06 20:27:19,332 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-06 20:27:19,333 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-06 20:27:19,333 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-06 20:27:19,334 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-06 20:27:19,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-06 20:27:19,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-06 20:27:19,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-06 20:27:19,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-06 20:27:19,337 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-06 20:27:19,337 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-06 20:27:19,338 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-06 20:27:19,338 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-06 20:27:19,338 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-06 20:27:19,339 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-06 20:27:19,339 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-06 20:27:19,340 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-12-06 20:27:19,358 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-06 20:27:19,358 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-06 20:27:19,358 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-06 20:27:19,359 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-06 20:27:19,359 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-06 20:27:19,359 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-06 20:27:19,360 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-06 20:27:19,360 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-06 20:27:19,360 INFO L138 SettingsManager]: * Use SBE=true [2021-12-06 20:27:19,360 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-06 20:27:19,360 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-06 20:27:19,360 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-06 20:27:19,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-06 20:27:19,362 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-06 20:27:19,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-06 20:27:19,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-06 20:27:19,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:27:19,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-06 20:27:19,362 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-06 20:27:19,362 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-06 20:27:19,363 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-06 20:27:19,363 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-06 20:27:19,363 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-06 20:27:19,363 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-06 20:27:19,363 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-06 20:27:19,363 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-06 20:27:19,363 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_0cdaca09-1f01-40bc-8962-35aff042e0d3/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 [2021-12-06 20:27:19,546 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-06 20:27:19,561 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-06 20:27:19,563 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-06 20:27:19,564 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-06 20:27:19,564 INFO L275 PluginConnector]: CDTParser initialized [2021-12-06 20:27:19,565 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2021-12-06 20:27:19,606 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/data/01c7c91d2/907a0ef852e94995aba291d53ebbf37b/FLAGa9178add5 [2021-12-06 20:27:20,142 INFO L306 CDTParser]: Found 1 translation units. [2021-12-06 20:27:20,143 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2021-12-06 20:27:20,158 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/data/01c7c91d2/907a0ef852e94995aba291d53ebbf37b/FLAGa9178add5 [2021-12-06 20:27:20,642 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/data/01c7c91d2/907a0ef852e94995aba291d53ebbf37b [2021-12-06 20:27:20,644 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-06 20:27:20,645 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-06 20:27:20,646 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-06 20:27:20,646 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-06 20:27:20,649 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-06 20:27:20,649 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:27:20" (1/1) ... [2021-12-06 20:27:20,650 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f3ed4d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:20, skipping insertion in model container [2021-12-06 20:27:20,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.12 08:27:20" (1/1) ... [2021-12-06 20:27:20,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-06 20:27:20,707 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-06 20:27:20,962 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_0cdaca09-1f01-40bc-8962-35aff042e0d3/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c[46529,46542] [2021-12-06 20:27:21,009 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:27:21,017 INFO L203 MainTranslator]: Completed pre-run [2021-12-06 20:27:21,077 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_0cdaca09-1f01-40bc-8962-35aff042e0d3/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c[46529,46542] [2021-12-06 20:27:21,097 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-06 20:27:21,118 INFO L208 MainTranslator]: Completed translation [2021-12-06 20:27:21,118 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21 WrapperNode [2021-12-06 20:27:21,118 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-06 20:27:21,119 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-06 20:27:21,119 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-06 20:27:21,119 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-06 20:27:21,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,151 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,184 INFO L137 Inliner]: procedures = 93, calls = 337, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 814 [2021-12-06 20:27:21,184 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-06 20:27:21,185 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-06 20:27:21,185 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-06 20:27:21,185 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-06 20:27:21,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,197 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,197 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,212 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,225 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,229 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-06 20:27:21,237 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-06 20:27:21,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-06 20:27:21,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-06 20:27:21,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (1/1) ... [2021-12-06 20:27:21,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-06 20:27:21,259 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:27:21,271 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-06 20:27:21,277 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-06 20:27:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-06 20:27:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-12-06 20:27:21,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-12-06 20:27:21,319 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-12-06 20:27:21,319 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-12-06 20:27:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-12-06 20:27:21,320 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-12-06 20:27:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-12-06 20:27:21,320 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-12-06 20:27:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-12-06 20:27:21,320 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-12-06 20:27:21,320 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-12-06 20:27:21,320 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-12-06 20:27:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-12-06 20:27:21,321 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-12-06 20:27:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-12-06 20:27:21,321 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-12-06 20:27:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-12-06 20:27:21,321 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-12-06 20:27:21,321 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-12-06 20:27:21,321 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-12-06 20:27:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-12-06 20:27:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-12-06 20:27:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-12-06 20:27:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-12-06 20:27:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-12-06 20:27:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-12-06 20:27:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-12-06 20:27:21,322 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-12-06 20:27:21,322 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2021-12-06 20:27:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2021-12-06 20:27:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-12-06 20:27:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-12-06 20:27:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-12-06 20:27:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-12-06 20:27:21,323 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-12-06 20:27:21,323 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-12-06 20:27:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2021-12-06 20:27:21,324 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2021-12-06 20:27:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-06 20:27:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-12-06 20:27:21,324 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-12-06 20:27:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-12-06 20:27:21,324 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-12-06 20:27:21,324 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-12-06 20:27:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-12-06 20:27:21,325 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-06 20:27:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-06 20:27:21,325 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-12-06 20:27:21,325 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-12-06 20:27:21,437 INFO L236 CfgBuilder]: Building ICFG [2021-12-06 20:27:21,439 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-06 20:27:22,056 INFO L277 CfgBuilder]: Performing block encoding [2021-12-06 20:27:22,066 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-06 20:27:22,066 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-06 20:27:22,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:27:22 BoogieIcfgContainer [2021-12-06 20:27:22,068 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-06 20:27:22,070 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-06 20:27:22,070 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-06 20:27:22,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-06 20:27:22,072 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.12 08:27:20" (1/3) ... [2021-12-06 20:27:22,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4220cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:27:22, skipping insertion in model container [2021-12-06 20:27:22,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.12 08:27:21" (2/3) ... [2021-12-06 20:27:22,073 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b4220cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.12 08:27:22, skipping insertion in model container [2021-12-06 20:27:22,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.12 08:27:22" (3/3) ... [2021-12-06 20:27:22,074 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2021-12-06 20:27:22,078 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-06 20:27:22,079 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-06 20:27:22,122 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-06 20:27:22,127 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 20:27:22,128 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-06 20:27:22,154 INFO L276 IsEmpty]: Start isEmpty. Operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) [2021-12-06 20:27:22,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-06 20:27:22,170 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:22,170 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] [2021-12-06 20:27:22,171 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:22,176 INFO L85 PathProgramCache]: Analyzing trace with hash -1868940779, now seen corresponding path program 1 times [2021-12-06 20:27:22,184 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:22,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629626942] [2021-12-06 20:27:22,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:22,185 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:22,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-06 20:27:22,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 20:27:22,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:22,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:22,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:22,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:22,793 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 20:27:22,794 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:22,794 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629626942] [2021-12-06 20:27:22,794 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629626942] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:22,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:22,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:22,796 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [393892884] [2021-12-06 20:27:22,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:22,800 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:22,800 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:22,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:22,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:22,822 INFO L87 Difference]: Start difference. First operand has 545 states, 431 states have (on average 1.7076566125290022) internal successors, (736), 454 states have internal predecessors, (736), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:26,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:26,245 INFO L93 Difference]: Finished difference Result 1223 states and 2080 transitions. [2021-12-06 20:27:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:27:26,247 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 58 [2021-12-06 20:27:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:26,265 INFO L225 Difference]: With dead ends: 1223 [2021-12-06 20:27:26,265 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:26,271 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:26,274 INFO L933 BasicCegarLoop]: 834 mSDtfsCounter, 666 mSDsluCounter, 991 mSDsCounter, 0 mSdLazyCounter, 2117 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 741 SdHoareTripleChecker+Valid, 1825 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 2117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:26,275 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [741 Valid, 1825 Invalid, 2246 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [129 Valid, 2117 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 20:27:26,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:26,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:26,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.703529411764706) internal successors, (724), 446 states have internal predecessors, (724), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:26,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 897 transitions. [2021-12-06 20:27:26,375 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 897 transitions. Word has length 58 [2021-12-06 20:27:26,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:26,376 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 897 transitions. [2021-12-06 20:27:26,376 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.166666666666667) internal successors, (43), 4 states have internal predecessors, (43), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:26,376 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 897 transitions. [2021-12-06 20:27:26,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2021-12-06 20:27:26,381 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:26,381 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] [2021-12-06 20:27:26,381 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-06 20:27:26,381 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:26,382 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:26,382 INFO L85 PathProgramCache]: Analyzing trace with hash 49721393, now seen corresponding path program 1 times [2021-12-06 20:27:26,382 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:26,382 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [518002224] [2021-12-06 20:27:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:26,383 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:26,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:26,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:26,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:26,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 20:27:26,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:26,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:26,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:26,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:26,650 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 20:27:26,650 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:26,650 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [518002224] [2021-12-06 20:27:26,651 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [518002224] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:26,651 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:26,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:26,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [978238058] [2021-12-06 20:27:26,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:26,652 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:26,652 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:26,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:26,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:26,653 INFO L87 Difference]: Start difference. First operand 537 states and 897 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:29,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:29,714 INFO L93 Difference]: Finished difference Result 1209 states and 2046 transitions. [2021-12-06 20:27:29,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:27:29,715 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 61 [2021-12-06 20:27:29,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:29,724 INFO L225 Difference]: With dead ends: 1209 [2021-12-06 20:27:29,724 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:29,726 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:29,727 INFO L933 BasicCegarLoop]: 825 mSDtfsCounter, 663 mSDsluCounter, 964 mSDsCounter, 0 mSdLazyCounter, 2111 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 738 SdHoareTripleChecker+Valid, 1789 SdHoareTripleChecker+Invalid, 2242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:29,727 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [738 Valid, 1789 Invalid, 2242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2111 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 20:27:29,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:29,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:29,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.7011764705882353) internal successors, (723), 446 states have internal predecessors, (723), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:29,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 896 transitions. [2021-12-06 20:27:29,775 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 896 transitions. Word has length 61 [2021-12-06 20:27:29,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:29,776 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 896 transitions. [2021-12-06 20:27:29,776 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:29,776 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 896 transitions. [2021-12-06 20:27:29,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-12-06 20:27:29,778 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:29,778 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] [2021-12-06 20:27:29,778 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-06 20:27:29,779 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:29,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:29,779 INFO L85 PathProgramCache]: Analyzing trace with hash -343579, now seen corresponding path program 1 times [2021-12-06 20:27:29,779 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:29,779 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2026279143] [2021-12-06 20:27:29,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:29,779 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:29,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:29,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-06 20:27:29,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:29,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2021-12-06 20:27:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:30,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:30,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:30,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:30,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:30,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:30,022 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 20:27:30,022 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:30,023 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2026279143] [2021-12-06 20:27:30,023 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2026279143] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:30,023 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:30,023 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:30,023 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913765531] [2021-12-06 20:27:30,023 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:30,023 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:30,024 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:30,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:30,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:30,024 INFO L87 Difference]: Start difference. First operand 537 states and 896 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:33,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:33,010 INFO L93 Difference]: Finished difference Result 1209 states and 2045 transitions. [2021-12-06 20:27:33,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:27:33,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 62 [2021-12-06 20:27:33,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:33,015 INFO L225 Difference]: With dead ends: 1209 [2021-12-06 20:27:33,015 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:33,017 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:33,018 INFO L933 BasicCegarLoop]: 823 mSDtfsCounter, 660 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 2109 mSolverCounterSat, 131 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 735 SdHoareTripleChecker+Valid, 1781 SdHoareTripleChecker+Invalid, 2240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 131 IncrementalHoareTripleChecker+Valid, 2109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:33,019 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [735 Valid, 1781 Invalid, 2240 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [131 Valid, 2109 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 20:27:33,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:33,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:33,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6988235294117646) internal successors, (722), 446 states have internal predecessors, (722), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:33,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 895 transitions. [2021-12-06 20:27:33,062 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 895 transitions. Word has length 62 [2021-12-06 20:27:33,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:33,063 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 895 transitions. [2021-12-06 20:27:33,063 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 4 states have internal predecessors, (47), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:33,063 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 895 transitions. [2021-12-06 20:27:33,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2021-12-06 20:27:33,064 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:33,064 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] [2021-12-06 20:27:33,064 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-06 20:27:33,065 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:33,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:33,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1969000915, now seen corresponding path program 1 times [2021-12-06 20:27:33,065 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:33,065 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788717470] [2021-12-06 20:27:33,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:33,065 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:33,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-06 20:27:33,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:33,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:33,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:33,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:33,296 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 20:27:33,296 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:33,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788717470] [2021-12-06 20:27:33,296 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788717470] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:33,297 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:33,297 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:33,297 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141010029] [2021-12-06 20:27:33,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:33,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:33,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:33,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:33,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:33,299 INFO L87 Difference]: Start difference. First operand 537 states and 895 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:36,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:36,050 INFO L93 Difference]: Finished difference Result 1209 states and 2044 transitions. [2021-12-06 20:27:36,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:27:36,050 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2021-12-06 20:27:36,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:36,054 INFO L225 Difference]: With dead ends: 1209 [2021-12-06 20:27:36,054 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:36,056 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:36,057 INFO L933 BasicCegarLoop]: 821 mSDtfsCounter, 1095 mSDsluCounter, 939 mSDsCounter, 0 mSdLazyCounter, 1936 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1170 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 1936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:36,058 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1170 Valid, 1760 Invalid, 2200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 1936 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 20:27:36,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:36,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:36,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6964705882352942) internal successors, (721), 446 states have internal predecessors, (721), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:36,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 894 transitions. [2021-12-06 20:27:36,098 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 894 transitions. Word has length 63 [2021-12-06 20:27:36,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:36,098 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 894 transitions. [2021-12-06 20:27:36,099 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:36,099 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 894 transitions. [2021-12-06 20:27:36,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-12-06 20:27:36,100 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:36,100 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] [2021-12-06 20:27:36,100 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-06 20:27:36,100 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:36,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:36,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1010487905, now seen corresponding path program 1 times [2021-12-06 20:27:36,101 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:36,101 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288517290] [2021-12-06 20:27:36,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:36,101 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:36,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:36,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:36,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:27:36,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2021-12-06 20:27:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:36,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:36,308 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 20:27:36,309 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:36,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288517290] [2021-12-06 20:27:36,309 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288517290] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:36,309 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:36,309 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:36,309 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461299252] [2021-12-06 20:27:36,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:36,310 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:36,310 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:36,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:36,310 INFO L87 Difference]: Start difference. First operand 537 states and 894 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:39,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:39,259 INFO L93 Difference]: Finished difference Result 1209 states and 2043 transitions. [2021-12-06 20:27:39,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:27:39,259 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2021-12-06 20:27:39,259 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:39,263 INFO L225 Difference]: With dead ends: 1209 [2021-12-06 20:27:39,263 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:39,265 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:39,266 INFO L933 BasicCegarLoop]: 820 mSDtfsCounter, 654 mSDsluCounter, 954 mSDsCounter, 0 mSdLazyCounter, 2105 mSolverCounterSat, 133 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 729 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 2238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 133 IncrementalHoareTripleChecker+Valid, 2105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:39,266 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [729 Valid, 1774 Invalid, 2238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [133 Valid, 2105 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 20:27:39,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:39,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:39,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6941176470588235) internal successors, (720), 446 states have internal predecessors, (720), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 893 transitions. [2021-12-06 20:27:39,316 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 893 transitions. Word has length 64 [2021-12-06 20:27:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:39,316 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 893 transitions. [2021-12-06 20:27:39,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:39,317 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 893 transitions. [2021-12-06 20:27:39,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-12-06 20:27:39,318 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:39,318 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 20:27:39,318 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-06 20:27:39,318 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:39,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:39,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1531282391, now seen corresponding path program 1 times [2021-12-06 20:27:39,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:39,319 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242207145] [2021-12-06 20:27:39,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:39,319 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:39,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:27:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-06 20:27:39,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:39,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:39,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:39,533 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 20:27:39,533 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:39,533 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242207145] [2021-12-06 20:27:39,533 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1242207145] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:39,533 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:39,533 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:39,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1073952005] [2021-12-06 20:27:39,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:39,534 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:39,534 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:39,535 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:39,535 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:39,535 INFO L87 Difference]: Start difference. First operand 537 states and 893 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:42,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:42,362 INFO L93 Difference]: Finished difference Result 1169 states and 1967 transitions. [2021-12-06 20:27:42,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:27:42,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2021-12-06 20:27:42,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:42,366 INFO L225 Difference]: With dead ends: 1169 [2021-12-06 20:27:42,366 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:42,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:42,369 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 720 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 2080 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 795 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:42,369 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [795 Valid, 1711 Invalid, 2246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2080 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 20:27:42,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:42,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:42,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6823529411764706) internal successors, (715), 446 states have internal predecessors, (715), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 888 transitions. [2021-12-06 20:27:42,412 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 888 transitions. Word has length 65 [2021-12-06 20:27:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:42,413 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 888 transitions. [2021-12-06 20:27:42,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 888 transitions. [2021-12-06 20:27:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-12-06 20:27:42,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:42,414 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 20:27:42,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-06 20:27:42,415 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1625150366, now seen corresponding path program 1 times [2021-12-06 20:27:42,415 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:42,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036924206] [2021-12-06 20:27:42,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:42,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:42,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:42,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:27:42,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 20:27:42,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:42,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:42,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:42,610 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 20:27:42,610 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:42,610 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036924206] [2021-12-06 20:27:42,610 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036924206] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:42,610 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:42,610 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:42,610 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134056026] [2021-12-06 20:27:42,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:42,611 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:42,611 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:42,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:42,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:42,611 INFO L87 Difference]: Start difference. First operand 537 states and 888 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:45,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:45,502 INFO L93 Difference]: Finished difference Result 1169 states and 1962 transitions. [2021-12-06 20:27:45,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:27:45,503 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2021-12-06 20:27:45,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:45,506 INFO L225 Difference]: With dead ends: 1169 [2021-12-06 20:27:45,506 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:45,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:45,508 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 719 mSDsluCounter, 943 mSDsCounter, 0 mSdLazyCounter, 2060 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 794 SdHoareTripleChecker+Valid, 1711 SdHoareTripleChecker+Invalid, 2221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 2060 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:45,509 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [794 Valid, 1711 Invalid, 2221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 2060 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 20:27:45,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:45,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:45,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6705882352941177) internal successors, (710), 446 states have internal predecessors, (710), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:45,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 883 transitions. [2021-12-06 20:27:45,547 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 883 transitions. Word has length 66 [2021-12-06 20:27:45,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:45,548 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 883 transitions. [2021-12-06 20:27:45,548 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:45,548 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 883 transitions. [2021-12-06 20:27:45,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-12-06 20:27:45,550 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:45,550 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] [2021-12-06 20:27:45,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-06 20:27:45,550 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:45,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:45,550 INFO L85 PathProgramCache]: Analyzing trace with hash -1328457138, now seen corresponding path program 1 times [2021-12-06 20:27:45,550 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:45,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34061628] [2021-12-06 20:27:45,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:45,551 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:45,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:45,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:45,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:27:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:27:45,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:45,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:45,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:45,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:45,752 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 20:27:45,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:45,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34061628] [2021-12-06 20:27:45,753 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34061628] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:45,753 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:45,753 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:45,753 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142325511] [2021-12-06 20:27:45,753 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:45,753 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:45,754 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:45,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:45,754 INFO L87 Difference]: Start difference. First operand 537 states and 883 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:48,499 INFO L93 Difference]: Finished difference Result 1169 states and 1957 transitions. [2021-12-06 20:27:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:27:48,500 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2021-12-06 20:27:48,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:48,503 INFO L225 Difference]: With dead ends: 1169 [2021-12-06 20:27:48,503 INFO L226 Difference]: Without dead ends: 690 [2021-12-06 20:27:48,505 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:48,505 INFO L933 BasicCegarLoop]: 768 mSDtfsCounter, 1164 mSDsluCounter, 913 mSDsCounter, 0 mSdLazyCounter, 1882 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1239 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 2168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 1882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:48,505 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1239 Valid, 1681 Invalid, 2168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 1882 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 20:27:48,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 690 states. [2021-12-06 20:27:48,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 690 to 537. [2021-12-06 20:27:48,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 425 states have (on average 1.6588235294117648) internal successors, (705), 446 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2021-12-06 20:27:48,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 878 transitions. [2021-12-06 20:27:48,544 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 878 transitions. Word has length 67 [2021-12-06 20:27:48,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:48,545 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 878 transitions. [2021-12-06 20:27:48,545 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-12-06 20:27:48,545 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 878 transitions. [2021-12-06 20:27:48,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2021-12-06 20:27:48,546 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:48,546 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] [2021-12-06 20:27:48,546 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-06 20:27:48,546 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:48,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:48,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1284448200, now seen corresponding path program 1 times [2021-12-06 20:27:48,547 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:48,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [331726434] [2021-12-06 20:27:48,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:48,547 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:48,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:48,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:48,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:27:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:27:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:48,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:48,819 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 20:27:48,819 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:48,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [331726434] [2021-12-06 20:27:48,819 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [331726434] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:48,819 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:48,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:27:48,819 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331961079] [2021-12-06 20:27:48,819 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:48,820 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:27:48,820 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:48,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:27:48,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:27:48,821 INFO L87 Difference]: Start difference. First operand 537 states and 878 transitions. Second operand has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 20:27:53,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:53,001 INFO L93 Difference]: Finished difference Result 1204 states and 2010 transitions. [2021-12-06 20:27:53,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-12-06 20:27:53,002 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2021-12-06 20:27:53,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:53,006 INFO L225 Difference]: With dead ends: 1204 [2021-12-06 20:27:53,006 INFO L226 Difference]: Without dead ends: 731 [2021-12-06 20:27:53,007 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2021-12-06 20:27:53,008 INFO L933 BasicCegarLoop]: 794 mSDtfsCounter, 1230 mSDsluCounter, 3159 mSDsCounter, 0 mSdLazyCounter, 5860 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 3953 SdHoareTripleChecker+Invalid, 6154 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 5860 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:53,008 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1308 Valid, 3953 Invalid, 6154 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [294 Valid, 5860 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2021-12-06 20:27:53,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 731 states. [2021-12-06 20:27:53,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 731 to 543. [2021-12-06 20:27:53,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 430 states have (on average 1.6511627906976745) internal successors, (710), 451 states have internal predecessors, (710), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:27:53,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 885 transitions. [2021-12-06 20:27:53,057 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 885 transitions. Word has length 68 [2021-12-06 20:27:53,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:53,057 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 885 transitions. [2021-12-06 20:27:53,057 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.818181818181818) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2021-12-06 20:27:53,057 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 885 transitions. [2021-12-06 20:27:53,059 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2021-12-06 20:27:53,059 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:53,059 INFO L514 BasicCegarLoop]: trace histogram [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 20:27:53,059 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-06 20:27:53,059 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:53,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:53,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1812911556, now seen corresponding path program 1 times [2021-12-06 20:27:53,060 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:53,060 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1847447879] [2021-12-06 20:27:53,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:53,060 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:53,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:53,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:53,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:27:53,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-06 20:27:53,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:53,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:53,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:53,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:53,256 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:27:53,256 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:53,256 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1847447879] [2021-12-06 20:27:53,256 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1847447879] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:53,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:53,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:27:53,256 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1823473910] [2021-12-06 20:27:53,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:53,257 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:27:53,257 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:53,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:27:53,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:27:53,257 INFO L87 Difference]: Start difference. First operand 543 states and 885 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:27:56,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:27:56,361 INFO L93 Difference]: Finished difference Result 1185 states and 1971 transitions. [2021-12-06 20:27:56,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:27:56,361 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2021-12-06 20:27:56,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:27:56,365 INFO L225 Difference]: With dead ends: 1185 [2021-12-06 20:27:56,365 INFO L226 Difference]: Without dead ends: 700 [2021-12-06 20:27:56,366 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:27:56,367 INFO L933 BasicCegarLoop]: 769 mSDtfsCounter, 727 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 2023 mSolverCounterSat, 150 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 2173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 150 IncrementalHoareTripleChecker+Valid, 2023 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:27:56,367 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [802 Valid, 1702 Invalid, 2173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [150 Valid, 2023 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2021-12-06 20:27:56,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 700 states. [2021-12-06 20:27:56,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 700 to 543. [2021-12-06 20:27:56,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 430 states have (on average 1.6395348837209303) internal successors, (705), 451 states have internal predecessors, (705), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:27:56,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 880 transitions. [2021-12-06 20:27:56,407 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 880 transitions. Word has length 74 [2021-12-06 20:27:56,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:27:56,407 INFO L470 AbstractCegarLoop]: Abstraction has 543 states and 880 transitions. [2021-12-06 20:27:56,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:27:56,408 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 880 transitions. [2021-12-06 20:27:56,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 20:27:56,409 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:27:56,409 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:27:56,409 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-06 20:27:56,409 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:27:56,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:27:56,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1832857293, now seen corresponding path program 1 times [2021-12-06 20:27:56,410 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:27:56,410 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470905537] [2021-12-06 20:27:56,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:27:56,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:27:56,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:27:56,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:27:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:27:56,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:56,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:27:56,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:27:56,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:27:56,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:27:56,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:27:56,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:27:56,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470905537] [2021-12-06 20:27:56,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470905537] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:27:56,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:27:56,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:27:56,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2085698454] [2021-12-06 20:27:56,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:27:56,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:27:56,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:27:56,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:27:56,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:27:56,647 INFO L87 Difference]: Start difference. First operand 543 states and 880 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 4 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 20:28:00,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:00,330 INFO L93 Difference]: Finished difference Result 1206 states and 1996 transitions. [2021-12-06 20:28:00,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:28:00,331 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 4 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 75 [2021-12-06 20:28:00,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:00,334 INFO L225 Difference]: With dead ends: 1206 [2021-12-06 20:28:00,335 INFO L226 Difference]: Without dead ends: 729 [2021-12-06 20:28:00,336 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:28:00,336 INFO L933 BasicCegarLoop]: 791 mSDtfsCounter, 1173 mSDsluCounter, 2064 mSDsCounter, 0 mSdLazyCounter, 3820 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1249 SdHoareTripleChecker+Valid, 2855 SdHoareTripleChecker+Invalid, 4097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 3820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:00,337 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1249 Valid, 2855 Invalid, 4097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 3820 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2021-12-06 20:28:00,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 729 states. [2021-12-06 20:28:00,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 729 to 546. [2021-12-06 20:28:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 433 states have (on average 1.6351039260969977) internal successors, (708), 454 states have internal predecessors, (708), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:28:00,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 883 transitions. [2021-12-06 20:28:00,387 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 883 transitions. Word has length 75 [2021-12-06 20:28:00,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:00,387 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 883 transitions. [2021-12-06 20:28:00,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (9), 4 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 20:28:00,387 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 883 transitions. [2021-12-06 20:28:00,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-12-06 20:28:00,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:00,389 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:28:00,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-12-06 20:28:00,389 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:00,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:00,389 INFO L85 PathProgramCache]: Analyzing trace with hash -2119221168, now seen corresponding path program 1 times [2021-12-06 20:28:00,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:00,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1675776731] [2021-12-06 20:28:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:00,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:00,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:28:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:00,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:28:00,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:28:00,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:00,568 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:00,568 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:00,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1675776731] [2021-12-06 20:28:00,568 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1675776731] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:00,568 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:00,568 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:28:00,568 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13295212] [2021-12-06 20:28:00,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:00,570 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:28:00,570 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:00,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:28:00,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:28:00,571 INFO L87 Difference]: Start difference. First operand 546 states and 883 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:28:03,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:03,262 INFO L93 Difference]: Finished difference Result 1194 states and 1975 transitions. [2021-12-06 20:28:03,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-06 20:28:03,262 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2021-12-06 20:28:03,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:03,265 INFO L225 Difference]: With dead ends: 1194 [2021-12-06 20:28:03,266 INFO L226 Difference]: Without dead ends: 706 [2021-12-06 20:28:03,267 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:28:03,267 INFO L933 BasicCegarLoop]: 767 mSDtfsCounter, 1161 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 277 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1236 SdHoareTripleChecker+Valid, 1681 SdHoareTripleChecker+Invalid, 2126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 277 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:03,268 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1236 Valid, 1681 Invalid, 2126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [277 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2021-12-06 20:28:03,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 706 states. [2021-12-06 20:28:03,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 706 to 546. [2021-12-06 20:28:03,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 546 states, 433 states have (on average 1.6235565819861433) internal successors, (703), 454 states have internal predecessors, (703), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:28:03,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 546 states to 546 states and 878 transitions. [2021-12-06 20:28:03,314 INFO L78 Accepts]: Start accepts. Automaton has 546 states and 878 transitions. Word has length 75 [2021-12-06 20:28:03,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:03,314 INFO L470 AbstractCegarLoop]: Abstraction has 546 states and 878 transitions. [2021-12-06 20:28:03,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:28:03,315 INFO L276 IsEmpty]: Start isEmpty. Operand 546 states and 878 transitions. [2021-12-06 20:28:03,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 20:28:03,316 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:03,316 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:28:03,316 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-12-06 20:28:03,316 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:03,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:03,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1929474410, now seen corresponding path program 1 times [2021-12-06 20:28:03,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:03,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691254736] [2021-12-06 20:28:03,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:03,317 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:03,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:03,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:03,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:03,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 20:28:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:03,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:03,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:28:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:28:03,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:03,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:03,521 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:03,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691254736] [2021-12-06 20:28:03,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691254736] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:03,521 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:03,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:28:03,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [580209754] [2021-12-06 20:28:03,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:03,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:28:03,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:03,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:28:03,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:28:03,522 INFO L87 Difference]: Start difference. First operand 546 states and 878 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (9), 4 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 20:28:07,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:07,246 INFO L93 Difference]: Finished difference Result 1212 states and 1995 transitions. [2021-12-06 20:28:07,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:28:07,247 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (9), 4 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 76 [2021-12-06 20:28:07,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:07,250 INFO L225 Difference]: With dead ends: 1212 [2021-12-06 20:28:07,250 INFO L226 Difference]: Without dead ends: 735 [2021-12-06 20:28:07,251 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:28:07,252 INFO L933 BasicCegarLoop]: 785 mSDtfsCounter, 1166 mSDsluCounter, 2046 mSDsCounter, 0 mSdLazyCounter, 3797 mSolverCounterSat, 284 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 2831 SdHoareTripleChecker+Invalid, 4081 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 284 IncrementalHoareTripleChecker+Valid, 3797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:07,252 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1242 Valid, 2831 Invalid, 4081 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [284 Valid, 3797 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 20:28:07,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2021-12-06 20:28:07,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 550. [2021-12-06 20:28:07,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 550 states, 437 states have (on average 1.6178489702517163) internal successors, (707), 458 states have internal predecessors, (707), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:28:07,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 550 states to 550 states and 882 transitions. [2021-12-06 20:28:07,294 INFO L78 Accepts]: Start accepts. Automaton has 550 states and 882 transitions. Word has length 76 [2021-12-06 20:28:07,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:07,294 INFO L470 AbstractCegarLoop]: Abstraction has 550 states and 882 transitions. [2021-12-06 20:28:07,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (9), 4 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 20:28:07,295 INFO L276 IsEmpty]: Start isEmpty. Operand 550 states and 882 transitions. [2021-12-06 20:28:07,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 20:28:07,296 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:07,296 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:28:07,296 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2021-12-06 20:28:07,296 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:07,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:07,297 INFO L85 PathProgramCache]: Analyzing trace with hash 1803478665, now seen corresponding path program 1 times [2021-12-06 20:28:07,297 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:07,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477677778] [2021-12-06 20:28:07,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:07,297 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:07,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:07,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 20:28:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:07,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:28:07,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:28:07,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:07,511 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:07,512 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:07,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477677778] [2021-12-06 20:28:07,512 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477677778] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:07,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:07,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:28:07,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404667122] [2021-12-06 20:28:07,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:07,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:28:07,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:07,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:28:07,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:28:07,513 INFO L87 Difference]: Start difference. First operand 550 states and 882 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:28:10,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:10,820 INFO L93 Difference]: Finished difference Result 1210 states and 1989 transitions. [2021-12-06 20:28:10,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-06 20:28:10,820 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2021-12-06 20:28:10,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:10,825 INFO L225 Difference]: With dead ends: 1210 [2021-12-06 20:28:10,825 INFO L226 Difference]: Without dead ends: 736 [2021-12-06 20:28:10,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:28:10,828 INFO L933 BasicCegarLoop]: 802 mSDtfsCounter, 1169 mSDsluCounter, 2061 mSDsCounter, 0 mSdLazyCounter, 3801 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1245 SdHoareTripleChecker+Valid, 2863 SdHoareTripleChecker+Invalid, 4070 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 3801 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:10,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1245 Valid, 2863 Invalid, 4070 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 3801 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-12-06 20:28:10,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2021-12-06 20:28:10,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 561. [2021-12-06 20:28:10,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 561 states, 445 states have (on average 1.6112359550561797) internal successors, (717), 468 states have internal predecessors, (717), 90 states have call successors, (90), 23 states have call predecessors, (90), 25 states have return successors, (89), 83 states have call predecessors, (89), 85 states have call successors, (89) [2021-12-06 20:28:10,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 561 states to 561 states and 896 transitions. [2021-12-06 20:28:10,882 INFO L78 Accepts]: Start accepts. Automaton has 561 states and 896 transitions. Word has length 76 [2021-12-06 20:28:10,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:10,883 INFO L470 AbstractCegarLoop]: Abstraction has 561 states and 896 transitions. [2021-12-06 20:28:10,883 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:28:10,883 INFO L276 IsEmpty]: Start isEmpty. Operand 561 states and 896 transitions. [2021-12-06 20:28:10,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-12-06 20:28:10,884 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:10,885 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:28:10,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2021-12-06 20:28:10,885 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:10,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:10,886 INFO L85 PathProgramCache]: Analyzing trace with hash 2083828554, now seen corresponding path program 1 times [2021-12-06 20:28:10,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:10,886 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [911289996] [2021-12-06 20:28:10,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:10,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:10,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:10,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:10,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:10,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:10,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:11,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2021-12-06 20:28:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:11,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:11,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:11,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:28:11,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:11,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:28:11,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:11,081 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:11,081 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:11,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [911289996] [2021-12-06 20:28:11,081 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [911289996] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:11,081 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:11,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:28:11,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184861752] [2021-12-06 20:28:11,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:11,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:28:11,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:11,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:28:11,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:28:11,082 INFO L87 Difference]: Start difference. First operand 561 states and 896 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:28:13,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:13,941 INFO L93 Difference]: Finished difference Result 1267 states and 2057 transitions. [2021-12-06 20:28:13,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:28:13,942 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 76 [2021-12-06 20:28:13,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:13,946 INFO L225 Difference]: With dead ends: 1267 [2021-12-06 20:28:13,946 INFO L226 Difference]: Without dead ends: 704 [2021-12-06 20:28:13,947 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-12-06 20:28:13,948 INFO L933 BasicCegarLoop]: 793 mSDtfsCounter, 649 mSDsluCounter, 946 mSDsCounter, 0 mSdLazyCounter, 1997 mSolverCounterSat, 130 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 724 SdHoareTripleChecker+Valid, 1739 SdHoareTripleChecker+Invalid, 2127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 130 IncrementalHoareTripleChecker+Valid, 1997 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:13,948 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [724 Valid, 1739 Invalid, 2127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [130 Valid, 1997 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2021-12-06 20:28:13,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2021-12-06 20:28:13,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 542. [2021-12-06 20:28:13,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 542 states, 429 states have (on average 1.6200466200466201) internal successors, (695), 450 states have internal predecessors, (695), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:28:13,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 542 states to 542 states and 870 transitions. [2021-12-06 20:28:13,991 INFO L78 Accepts]: Start accepts. Automaton has 542 states and 870 transitions. Word has length 76 [2021-12-06 20:28:13,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:13,991 INFO L470 AbstractCegarLoop]: Abstraction has 542 states and 870 transitions. [2021-12-06 20:28:13,991 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:28:13,991 INFO L276 IsEmpty]: Start isEmpty. Operand 542 states and 870 transitions. [2021-12-06 20:28:13,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2021-12-06 20:28:13,993 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:13,993 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:28:13,993 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2021-12-06 20:28:13,993 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:13,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:13,993 INFO L85 PathProgramCache]: Analyzing trace with hash 715869938, now seen corresponding path program 1 times [2021-12-06 20:28:13,994 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:13,994 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899322686] [2021-12-06 20:28:13,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:13,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:14,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:14,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:14,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2021-12-06 20:28:14,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:28:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:28:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:14,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:14,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:14,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [899322686] [2021-12-06 20:28:14,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [899322686] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:14,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:14,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-06 20:28:14,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916970221] [2021-12-06 20:28:14,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:14,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-06 20:28:14,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:14,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-06 20:28:14,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:28:14,222 INFO L87 Difference]: Start difference. First operand 542 states and 870 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (9), 4 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 20:28:17,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:17,891 INFO L93 Difference]: Finished difference Result 1202 states and 1972 transitions. [2021-12-06 20:28:17,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-06 20:28:17,891 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (9), 4 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 77 [2021-12-06 20:28:17,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:17,895 INFO L225 Difference]: With dead ends: 1202 [2021-12-06 20:28:17,895 INFO L226 Difference]: Without dead ends: 725 [2021-12-06 20:28:17,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2021-12-06 20:28:17,897 INFO L933 BasicCegarLoop]: 779 mSDtfsCounter, 698 mSDsluCounter, 2069 mSDsCounter, 0 mSdLazyCounter, 3877 mSolverCounterSat, 139 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 773 SdHoareTripleChecker+Valid, 2848 SdHoareTripleChecker+Invalid, 4016 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 139 IncrementalHoareTripleChecker+Valid, 3877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:17,897 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [773 Valid, 2848 Invalid, 4016 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [139 Valid, 3877 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2021-12-06 20:28:17,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 725 states. [2021-12-06 20:28:17,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 725 to 547. [2021-12-06 20:28:17,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 434 states have (on average 1.6129032258064515) internal successors, (700), 455 states have internal predecessors, (700), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:28:17,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 875 transitions. [2021-12-06 20:28:17,949 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 875 transitions. Word has length 77 [2021-12-06 20:28:17,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:17,949 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 875 transitions. [2021-12-06 20:28:17,949 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (9), 4 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 20:28:17,949 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 875 transitions. [2021-12-06 20:28:17,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 20:28:17,950 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:17,950 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:28:17,950 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-06 20:28:17,950 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:17,951 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:17,951 INFO L85 PathProgramCache]: Analyzing trace with hash 129943741, now seen corresponding path program 1 times [2021-12-06 20:28:17,951 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:17,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057648626] [2021-12-06 20:28:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:17,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:17,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:18,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:18,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:18,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:28:18,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:18,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:18,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:28:18,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:28:18,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:18,130 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:18,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057648626] [2021-12-06 20:28:18,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057648626] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:18,130 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:18,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-06 20:28:18,130 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1694008612] [2021-12-06 20:28:18,130 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:18,131 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:28:18,131 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:18,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:28:18,131 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-06 20:28:18,131 INFO L87 Difference]: Start difference. First operand 547 states and 875 transitions. Second operand has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:28:20,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:20,785 INFO L93 Difference]: Finished difference Result 1200 states and 1967 transitions. [2021-12-06 20:28:20,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-06 20:28:20,785 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 78 [2021-12-06 20:28:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:20,789 INFO L225 Difference]: With dead ends: 1200 [2021-12-06 20:28:20,789 INFO L226 Difference]: Without dead ends: 702 [2021-12-06 20:28:20,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-06 20:28:20,791 INFO L933 BasicCegarLoop]: 766 mSDtfsCounter, 1120 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1813 mSolverCounterSat, 269 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1195 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 2082 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 269 IncrementalHoareTripleChecker+Valid, 1813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:20,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1195 Valid, 1685 Invalid, 2082 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [269 Valid, 1813 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2021-12-06 20:28:20,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 702 states. [2021-12-06 20:28:20,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 702 to 547. [2021-12-06 20:28:20,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 547 states, 434 states have (on average 1.6036866359447004) internal successors, (696), 455 states have internal predecessors, (696), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (86), 82 states have call predecessors, (86), 84 states have call successors, (86) [2021-12-06 20:28:20,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 547 states to 547 states and 871 transitions. [2021-12-06 20:28:20,841 INFO L78 Accepts]: Start accepts. Automaton has 547 states and 871 transitions. Word has length 78 [2021-12-06 20:28:20,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:20,841 INFO L470 AbstractCegarLoop]: Abstraction has 547 states and 871 transitions. [2021-12-06 20:28:20,841 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.833333333333334) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2021-12-06 20:28:20,841 INFO L276 IsEmpty]: Start isEmpty. Operand 547 states and 871 transitions. [2021-12-06 20:28:20,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-06 20:28:20,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:20,842 INFO L514 BasicCegarLoop]: trace histogram [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] [2021-12-06 20:28:20,843 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2021-12-06 20:28:20,843 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:20,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:20,843 INFO L85 PathProgramCache]: Analyzing trace with hash -1809218305, now seen corresponding path program 1 times [2021-12-06 20:28:20,843 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:20,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492795912] [2021-12-06 20:28:20,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:20,843 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:20,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:20,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:20,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:20,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:20,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:20,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:20,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:21,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:28:21,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:21,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:21,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2021-12-06 20:28:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:21,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:28:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:21,057 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:21,057 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:21,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492795912] [2021-12-06 20:28:21,058 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492795912] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:21,058 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:21,058 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:28:21,058 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648509394] [2021-12-06 20:28:21,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:21,058 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:28:21,058 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:21,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:28:21,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:28:21,059 INFO L87 Difference]: Start difference. First operand 547 states and 871 transitions. Second operand has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:28:30,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:30,877 INFO L93 Difference]: Finished difference Result 2332 states and 3909 transitions. [2021-12-06 20:28:30,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2021-12-06 20:28:30,877 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) Word has length 78 [2021-12-06 20:28:30,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:30,887 INFO L225 Difference]: With dead ends: 2332 [2021-12-06 20:28:30,887 INFO L226 Difference]: Without dead ends: 1863 [2021-12-06 20:28:30,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 577 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=323, Invalid=1747, Unknown=0, NotChecked=0, Total=2070 [2021-12-06 20:28:30,890 INFO L933 BasicCegarLoop]: 967 mSDtfsCounter, 3755 mSDsluCounter, 2649 mSDsCounter, 0 mSdLazyCounter, 8330 mSolverCounterSat, 1058 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3824 SdHoareTripleChecker+Valid, 3616 SdHoareTripleChecker+Invalid, 9388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1058 IncrementalHoareTripleChecker+Valid, 8330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:30,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3824 Valid, 3616 Invalid, 9388 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1058 Valid, 8330 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2021-12-06 20:28:30,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1863 states. [2021-12-06 20:28:31,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1863 to 1384. [2021-12-06 20:28:31,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1113 states have (on average 1.6477987421383649) internal successors, (1834), 1143 states have internal predecessors, (1834), 209 states have call successors, (209), 57 states have call predecessors, (209), 61 states have return successors, (226), 197 states have call predecessors, (226), 204 states have call successors, (226) [2021-12-06 20:28:31,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2269 transitions. [2021-12-06 20:28:31,047 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2269 transitions. Word has length 78 [2021-12-06 20:28:31,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:31,048 INFO L470 AbstractCegarLoop]: Abstraction has 1384 states and 2269 transitions. [2021-12-06 20:28:31,048 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.363636363636363) internal successors, (59), 7 states have internal predecessors, (59), 4 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (8), 6 states have call predecessors, (8), 3 states have call successors, (8) [2021-12-06 20:28:31,048 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2269 transitions. [2021-12-06 20:28:31,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-06 20:28:31,050 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:31,051 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:31,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2021-12-06 20:28:31,051 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:31,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:31,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1484179961, now seen corresponding path program 1 times [2021-12-06 20:28:31,051 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:31,051 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1719684578] [2021-12-06 20:28:31,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:31,052 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:31,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:31,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:31,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:28:31,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:31,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:31,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:31,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-06 20:28:31,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-06 20:28:31,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:28:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:28:31,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:31,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:31,433 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:31,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1719684578] [2021-12-06 20:28:31,433 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1719684578] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:31,433 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:31,433 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:28:31,433 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750732248] [2021-12-06 20:28:31,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:31,433 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:28:31,434 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:31,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:28:31,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:28:31,434 INFO L87 Difference]: Start difference. First operand 1384 states and 2269 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:28:36,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:36,099 INFO L93 Difference]: Finished difference Result 3414 states and 5792 transitions. [2021-12-06 20:28:36,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-06 20:28:36,100 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2021-12-06 20:28:36,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:36,110 INFO L225 Difference]: With dead ends: 3414 [2021-12-06 20:28:36,110 INFO L226 Difference]: Without dead ends: 2109 [2021-12-06 20:28:36,115 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=174, Invalid=332, Unknown=0, NotChecked=0, Total=506 [2021-12-06 20:28:36,115 INFO L933 BasicCegarLoop]: 850 mSDtfsCounter, 3763 mSDsluCounter, 1163 mSDsCounter, 0 mSdLazyCounter, 2313 mSolverCounterSat, 1810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3763 SdHoareTripleChecker+Valid, 2013 SdHoareTripleChecker+Invalid, 4123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1810 IncrementalHoareTripleChecker+Valid, 2313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:36,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3763 Valid, 2013 Invalid, 4123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1810 Valid, 2313 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2021-12-06 20:28:36,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2109 states. [2021-12-06 20:28:36,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2109 to 1392. [2021-12-06 20:28:36,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1392 states, 1119 states have (on average 1.6443252904378909) internal successors, (1840), 1149 states have internal predecessors, (1840), 209 states have call successors, (209), 57 states have call predecessors, (209), 63 states have return successors, (228), 198 states have call predecessors, (228), 204 states have call successors, (228) [2021-12-06 20:28:36,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1392 states to 1392 states and 2277 transitions. [2021-12-06 20:28:36,300 INFO L78 Accepts]: Start accepts. Automaton has 1392 states and 2277 transitions. Word has length 107 [2021-12-06 20:28:36,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:36,300 INFO L470 AbstractCegarLoop]: Abstraction has 1392 states and 2277 transitions. [2021-12-06 20:28:36,300 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 7 states have internal predecessors, (80), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:28:36,300 INFO L276 IsEmpty]: Start isEmpty. Operand 1392 states and 2277 transitions. [2021-12-06 20:28:36,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2021-12-06 20:28:36,303 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:36,303 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:36,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2021-12-06 20:28:36,303 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:36,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:36,303 INFO L85 PathProgramCache]: Analyzing trace with hash 210734150, now seen corresponding path program 1 times [2021-12-06 20:28:36,303 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:36,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349365595] [2021-12-06 20:28:36,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:36,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:36,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:36,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:28:36,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:36,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:36,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:36,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:36,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:28:36,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 20:28:36,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2021-12-06 20:28:36,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-06 20:28:36,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:36,683 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:36,684 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:36,684 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349365595] [2021-12-06 20:28:36,684 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349365595] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:36,684 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:36,684 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-06 20:28:36,684 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537437834] [2021-12-06 20:28:36,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:36,685 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-06 20:28:36,685 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:36,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-06 20:28:36,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-12-06 20:28:36,686 INFO L87 Difference]: Start difference. First operand 1392 states and 2277 transitions. Second operand has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:28:45,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:28:45,626 INFO L93 Difference]: Finished difference Result 4888 states and 8383 transitions. [2021-12-06 20:28:45,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 20:28:45,627 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 110 [2021-12-06 20:28:45,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:28:45,643 INFO L225 Difference]: With dead ends: 4888 [2021-12-06 20:28:45,643 INFO L226 Difference]: Without dead ends: 3575 [2021-12-06 20:28:45,648 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=192, Invalid=564, Unknown=0, NotChecked=0, Total=756 [2021-12-06 20:28:45,649 INFO L933 BasicCegarLoop]: 929 mSDtfsCounter, 2496 mSDsluCounter, 2453 mSDsCounter, 0 mSdLazyCounter, 5519 mSolverCounterSat, 912 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2561 SdHoareTripleChecker+Valid, 3382 SdHoareTripleChecker+Invalid, 6431 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 912 IncrementalHoareTripleChecker+Valid, 5519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:28:45,649 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2561 Valid, 3382 Invalid, 6431 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [912 Valid, 5519 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2021-12-06 20:28:45,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3575 states. [2021-12-06 20:28:45,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3575 to 2774. [2021-12-06 20:28:45,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2774 states, 2239 states have (on average 1.651183564091112) internal successors, (3697), 2287 states have internal predecessors, (3697), 400 states have call successors, (400), 105 states have call predecessors, (400), 134 states have return successors, (512), 405 states have call predecessors, (512), 395 states have call successors, (512) [2021-12-06 20:28:45,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2774 states to 2774 states and 4609 transitions. [2021-12-06 20:28:45,994 INFO L78 Accepts]: Start accepts. Automaton has 2774 states and 4609 transitions. Word has length 110 [2021-12-06 20:28:45,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:28:45,994 INFO L470 AbstractCegarLoop]: Abstraction has 2774 states and 4609 transitions. [2021-12-06 20:28:45,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.3) internal successors, (83), 5 states have internal predecessors, (83), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2021-12-06 20:28:45,995 INFO L276 IsEmpty]: Start isEmpty. Operand 2774 states and 4609 transitions. [2021-12-06 20:28:45,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2021-12-06 20:28:45,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:28:45,997 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:28:45,997 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2021-12-06 20:28:45,998 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:28:45,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:28:45,998 INFO L85 PathProgramCache]: Analyzing trace with hash 207824670, now seen corresponding path program 1 times [2021-12-06 20:28:45,998 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:28:45,998 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821956616] [2021-12-06 20:28:45,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:28:45,998 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:28:46,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:46,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:46,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:28:46,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:28:46,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:46,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:46,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:28:46,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:28:46,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:28:46,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-06 20:28:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-06 20:28:46,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-06 20:28:46,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:28:46,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-12-06 20:28:46,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:28:46,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821956616] [2021-12-06 20:28:46,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821956616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:28:46,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:28:46,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:28:46,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831834880] [2021-12-06 20:28:46,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:28:46,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:28:46,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:28:46,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:28:46,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:28:46,329 INFO L87 Difference]: Start difference. First operand 2774 states and 4609 transitions. Second operand has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:29:05,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:29:05,493 INFO L93 Difference]: Finished difference Result 10588 states and 18945 transitions. [2021-12-06 20:29:05,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-06 20:29:05,494 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2021-12-06 20:29:05,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:29:05,532 INFO L225 Difference]: With dead ends: 10588 [2021-12-06 20:29:05,532 INFO L226 Difference]: Without dead ends: 7884 [2021-12-06 20:29:05,551 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 988 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=734, Invalid=2128, Unknown=0, NotChecked=0, Total=2862 [2021-12-06 20:29:05,552 INFO L933 BasicCegarLoop]: 1025 mSDtfsCounter, 8594 mSDsluCounter, 2930 mSDsCounter, 0 mSdLazyCounter, 10167 mSolverCounterSat, 3489 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8673 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 13656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3489 IncrementalHoareTripleChecker+Valid, 10167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.8s IncrementalHoareTripleChecker+Time [2021-12-06 20:29:05,552 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8673 Valid, 3955 Invalid, 13656 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3489 Valid, 10167 Invalid, 0 Unknown, 0 Unchecked, 14.8s Time] [2021-12-06 20:29:05,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7884 states. [2021-12-06 20:29:06,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7884 to 6189. [2021-12-06 20:29:06,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6189 states, 4970 states have (on average 1.6042253521126761) internal successors, (7973), 5091 states have internal predecessors, (7973), 889 states have call successors, (889), 273 states have call predecessors, (889), 329 states have return successors, (1305), 884 states have call predecessors, (1305), 884 states have call successors, (1305) [2021-12-06 20:29:06,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6189 states to 6189 states and 10167 transitions. [2021-12-06 20:29:06,385 INFO L78 Accepts]: Start accepts. Automaton has 6189 states and 10167 transitions. Word has length 114 [2021-12-06 20:29:06,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:29:06,385 INFO L470 AbstractCegarLoop]: Abstraction has 6189 states and 10167 transitions. [2021-12-06 20:29:06,386 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.909090909090909) internal successors, (87), 7 states have internal predecessors, (87), 4 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:29:06,386 INFO L276 IsEmpty]: Start isEmpty. Operand 6189 states and 10167 transitions. [2021-12-06 20:29:06,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-06 20:29:06,389 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:29:06,389 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:06,389 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2021-12-06 20:29:06,389 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:29:06,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:29:06,389 INFO L85 PathProgramCache]: Analyzing trace with hash 2088298506, now seen corresponding path program 1 times [2021-12-06 20:29:06,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:29:06,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190276666] [2021-12-06 20:29:06,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:29:06,390 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:29:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:06,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:06,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:29:06,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:29:06,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:06,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:06,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:06,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:29:06,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:29:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:29:06,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 20:29:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-06 20:29:06,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,772 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:29:06,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:29:06,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190276666] [2021-12-06 20:29:06,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190276666] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:29:06,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1703619152] [2021-12-06 20:29:06,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:29:06,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:29:06,773 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:29:06,774 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:29:06,774 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-06 20:29:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:06,938 INFO L263 TraceCheckSpWp]: Trace formula consists of 1688 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-06 20:29:06,947 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:29:07,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-06 20:29:07,181 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:29:07,181 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1703619152] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:29:07,181 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:29:07,182 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [14] total 18 [2021-12-06 20:29:07,182 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699598495] [2021-12-06 20:29:07,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:29:07,182 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-06 20:29:07,182 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:29:07,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-06 20:29:07,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:29:07,183 INFO L87 Difference]: Start difference. First operand 6189 states and 10167 transitions. Second operand has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 20:29:09,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:29:09,817 INFO L93 Difference]: Finished difference Result 16835 states and 28480 transitions. [2021-12-06 20:29:09,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-06 20:29:09,818 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 122 [2021-12-06 20:29:09,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:29:09,859 INFO L225 Difference]: With dead ends: 16835 [2021-12-06 20:29:09,859 INFO L226 Difference]: Without dead ends: 10724 [2021-12-06 20:29:09,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 162 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=294, Unknown=0, NotChecked=0, Total=342 [2021-12-06 20:29:09,878 INFO L933 BasicCegarLoop]: 1601 mSDtfsCounter, 2726 mSDsluCounter, 996 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 648 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2852 SdHoareTripleChecker+Valid, 2597 SdHoareTripleChecker+Invalid, 3015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 648 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-12-06 20:29:09,878 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2852 Valid, 2597 Invalid, 3015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [648 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-12-06 20:29:09,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10724 states. [2021-12-06 20:29:11,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10724 to 10381. [2021-12-06 20:29:11,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10381 states, 8099 states have (on average 1.5947647857760217) internal successors, (12916), 8378 states have internal predecessors, (12916), 1750 states have call successors, (1750), 417 states have call predecessors, (1750), 531 states have return successors, (2704), 1788 states have call predecessors, (2704), 1745 states have call successors, (2704) [2021-12-06 20:29:11,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10381 states to 10381 states and 17370 transitions. [2021-12-06 20:29:11,308 INFO L78 Accepts]: Start accepts. Automaton has 10381 states and 17370 transitions. Word has length 122 [2021-12-06 20:29:11,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:29:11,308 INFO L470 AbstractCegarLoop]: Abstraction has 10381 states and 17370 transitions. [2021-12-06 20:29:11,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 5 states have call successors, (14), 5 states have call predecessors, (14), 5 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 20:29:11,309 INFO L276 IsEmpty]: Start isEmpty. Operand 10381 states and 17370 transitions. [2021-12-06 20:29:11,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2021-12-06 20:29:11,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:29:11,312 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] [2021-12-06 20:29:11,333 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-06 20:29:11,513 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:29:11,514 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:29:11,514 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:29:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash 514982175, now seen corresponding path program 1 times [2021-12-06 20:29:11,515 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:29:11,515 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1648684584] [2021-12-06 20:29:11,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:29:11,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:29:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:11,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:29:11,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:29:11,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:11,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:11,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:11,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:11,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:29:11,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:29:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:29:11,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2021-12-06 20:29:11,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:11,895 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 20:29:11,895 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:29:11,895 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1648684584] [2021-12-06 20:29:11,895 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1648684584] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:29:11,895 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:29:11,895 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-06 20:29:11,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047487976] [2021-12-06 20:29:11,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:29:11,896 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-06 20:29:11,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:29:11,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-06 20:29:11,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-06 20:29:11,896 INFO L87 Difference]: Start difference. First operand 10381 states and 17370 transitions. Second operand has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:29:21,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:29:21,694 INFO L93 Difference]: Finished difference Result 25655 states and 44857 transitions. [2021-12-06 20:29:21,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-06 20:29:21,695 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 121 [2021-12-06 20:29:21,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:29:21,761 INFO L225 Difference]: With dead ends: 25655 [2021-12-06 20:29:21,761 INFO L226 Difference]: Without dead ends: 13663 [2021-12-06 20:29:21,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=222, Invalid=770, Unknown=0, NotChecked=0, Total=992 [2021-12-06 20:29:21,826 INFO L933 BasicCegarLoop]: 1084 mSDtfsCounter, 2821 mSDsluCounter, 4248 mSDsCounter, 0 mSdLazyCounter, 8161 mSolverCounterSat, 887 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2843 SdHoareTripleChecker+Valid, 5332 SdHoareTripleChecker+Invalid, 9048 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 887 IncrementalHoareTripleChecker+Valid, 8161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:29:21,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2843 Valid, 5332 Invalid, 9048 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [887 Valid, 8161 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2021-12-06 20:29:21,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13663 states. [2021-12-06 20:29:23,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13663 to 10381. [2021-12-06 20:29:23,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10381 states, 8099 states have (on average 1.5695764909248056) internal successors, (12712), 8378 states have internal predecessors, (12712), 1750 states have call successors, (1750), 417 states have call predecessors, (1750), 531 states have return successors, (2704), 1788 states have call predecessors, (2704), 1745 states have call successors, (2704) [2021-12-06 20:29:23,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10381 states to 10381 states and 17166 transitions. [2021-12-06 20:29:23,395 INFO L78 Accepts]: Start accepts. Automaton has 10381 states and 17166 transitions. Word has length 121 [2021-12-06 20:29:23,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:29:23,396 INFO L470 AbstractCegarLoop]: Abstraction has 10381 states and 17166 transitions. [2021-12-06 20:29:23,396 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.857142857142857) internal successors, (96), 8 states have internal predecessors, (96), 4 states have call successors, (13), 6 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2021-12-06 20:29:23,396 INFO L276 IsEmpty]: Start isEmpty. Operand 10381 states and 17166 transitions. [2021-12-06 20:29:23,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2021-12-06 20:29:23,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:29:23,400 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:23,400 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2021-12-06 20:29:23,400 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:29:23,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:29:23,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1897428458, now seen corresponding path program 1 times [2021-12-06 20:29:23,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:29:23,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694518647] [2021-12-06 20:29:23,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:29:23,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:29:23,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:23,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:29:23,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:29:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:23,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:23,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:23,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:29:23,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-06 20:29:23,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2021-12-06 20:29:23,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2021-12-06 20:29:23,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-06 20:29:23,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-12-06 20:29:23,731 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:29:23,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694518647] [2021-12-06 20:29:23,732 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694518647] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:29:23,732 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:29:23,732 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-06 20:29:23,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [661834634] [2021-12-06 20:29:23,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:29:23,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-06 20:29:23,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:29:23,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-06 20:29:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2021-12-06 20:29:23,733 INFO L87 Difference]: Start difference. First operand 10381 states and 17166 transitions. Second operand has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 20:29:36,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:29:36,491 INFO L93 Difference]: Finished difference Result 24686 states and 43273 transitions. [2021-12-06 20:29:36,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2021-12-06 20:29:36,492 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 123 [2021-12-06 20:29:36,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:29:36,560 INFO L225 Difference]: With dead ends: 24686 [2021-12-06 20:29:36,560 INFO L226 Difference]: Without dead ends: 14386 [2021-12-06 20:29:36,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=247, Invalid=875, Unknown=0, NotChecked=0, Total=1122 [2021-12-06 20:29:36,623 INFO L933 BasicCegarLoop]: 894 mSDtfsCounter, 2839 mSDsluCounter, 3245 mSDsCounter, 0 mSdLazyCounter, 7272 mSolverCounterSat, 969 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2899 SdHoareTripleChecker+Valid, 4139 SdHoareTripleChecker+Invalid, 8241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 969 IncrementalHoareTripleChecker+Valid, 7272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:29:36,624 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2899 Valid, 4139 Invalid, 8241 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [969 Valid, 7272 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2021-12-06 20:29:36,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14386 states. [2021-12-06 20:29:38,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14386 to 10609. [2021-12-06 20:29:38,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10609 states, 8213 states have (on average 1.5616705223426275) internal successors, (12826), 8570 states have internal predecessors, (12826), 1786 states have call successors, (1786), 417 states have call predecessors, (1786), 609 states have return successors, (3040), 1824 states have call predecessors, (3040), 1781 states have call successors, (3040) [2021-12-06 20:29:38,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10609 states to 10609 states and 17652 transitions. [2021-12-06 20:29:38,322 INFO L78 Accepts]: Start accepts. Automaton has 10609 states and 17652 transitions. Word has length 123 [2021-12-06 20:29:38,322 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:29:38,322 INFO L470 AbstractCegarLoop]: Abstraction has 10609 states and 17652 transitions. [2021-12-06 20:29:38,323 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 8.727272727272727) internal successors, (96), 7 states have internal predecessors, (96), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 20:29:38,323 INFO L276 IsEmpty]: Start isEmpty. Operand 10609 states and 17652 transitions. [2021-12-06 20:29:38,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-12-06 20:29:38,326 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:29:38,327 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:38,327 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-06 20:29:38,327 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:29:38,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:29:38,327 INFO L85 PathProgramCache]: Analyzing trace with hash -2061516223, now seen corresponding path program 1 times [2021-12-06 20:29:38,327 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:29:38,327 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1443072080] [2021-12-06 20:29:38,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:29:38,327 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:29:38,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:38,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:29:38,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:29:38,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:38,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:38,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:38,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:38,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:29:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:29:38,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:29:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:29:38,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-06 20:29:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:38,677 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-12-06 20:29:38,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:29:38,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1443072080] [2021-12-06 20:29:38,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1443072080] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:29:38,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:29:38,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-06 20:29:38,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458918007] [2021-12-06 20:29:38,677 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:29:38,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-06 20:29:38,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:29:38,678 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-06 20:29:38,678 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2021-12-06 20:29:38,678 INFO L87 Difference]: Start difference. First operand 10609 states and 17652 transitions. Second operand has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 20:29:50,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:29:50,756 INFO L93 Difference]: Finished difference Result 26550 states and 46206 transitions. [2021-12-06 20:29:50,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-06 20:29:50,757 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 126 [2021-12-06 20:29:50,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:29:50,831 INFO L225 Difference]: With dead ends: 26550 [2021-12-06 20:29:50,831 INFO L226 Difference]: Without dead ends: 16018 [2021-12-06 20:29:50,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 163 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=195, Invalid=617, Unknown=0, NotChecked=0, Total=812 [2021-12-06 20:29:50,874 INFO L933 BasicCegarLoop]: 877 mSDtfsCounter, 3613 mSDsluCounter, 2436 mSDsCounter, 0 mSdLazyCounter, 6255 mSolverCounterSat, 1167 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3669 SdHoareTripleChecker+Valid, 3313 SdHoareTripleChecker+Invalid, 7422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1167 IncrementalHoareTripleChecker+Valid, 6255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.9s IncrementalHoareTripleChecker+Time [2021-12-06 20:29:50,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3669 Valid, 3313 Invalid, 7422 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1167 Valid, 6255 Invalid, 0 Unknown, 0 Unchecked, 7.9s Time] [2021-12-06 20:29:50,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16018 states. [2021-12-06 20:29:52,760 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16018 to 12385. [2021-12-06 20:29:52,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12385 states, 9635 states have (on average 1.5422937208095486) internal successors, (14860), 10034 states have internal predecessors, (14860), 2002 states have call successors, (2002), 531 states have call predecessors, (2002), 747 states have return successors, (3460), 2022 states have call predecessors, (3460), 1997 states have call successors, (3460) [2021-12-06 20:29:52,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12385 states to 12385 states and 20322 transitions. [2021-12-06 20:29:52,827 INFO L78 Accepts]: Start accepts. Automaton has 12385 states and 20322 transitions. Word has length 126 [2021-12-06 20:29:52,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:29:52,828 INFO L470 AbstractCegarLoop]: Abstraction has 12385 states and 20322 transitions. [2021-12-06 20:29:52,828 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.818181818181818) internal successors, (97), 7 states have internal predecessors, (97), 4 states have call successors, (14), 6 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-06 20:29:52,828 INFO L276 IsEmpty]: Start isEmpty. Operand 12385 states and 20322 transitions. [2021-12-06 20:29:52,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2021-12-06 20:29:52,831 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:29:52,832 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:29:52,832 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2021-12-06 20:29:52,832 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:29:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:29:52,832 INFO L85 PathProgramCache]: Analyzing trace with hash -245916110, now seen corresponding path program 1 times [2021-12-06 20:29:52,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:29:52,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1916005419] [2021-12-06 20:29:52,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:29:52,832 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:29:52,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:52,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:52,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:52,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:52,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:52,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:29:52,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:52,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:29:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:53,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:53,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:29:53,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:29:53,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:29:53,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:29:53,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:29:53,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:29:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:29:53,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 20:29:53,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:29:53,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:29:53,125 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:29:53,125 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1916005419] [2021-12-06 20:29:53,125 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1916005419] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:29:53,126 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:29:53,126 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:29:53,126 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827856375] [2021-12-06 20:29:53,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:29:53,126 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:29:53,126 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:29:53,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:29:53,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:29:53,127 INFO L87 Difference]: Start difference. First operand 12385 states and 20322 transitions. Second operand has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:30:03,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:30:03,270 INFO L93 Difference]: Finished difference Result 39585 states and 70129 transitions. [2021-12-06 20:30:03,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:30:03,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 131 [2021-12-06 20:30:03,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:30:03,399 INFO L225 Difference]: With dead ends: 39585 [2021-12-06 20:30:03,399 INFO L226 Difference]: Without dead ends: 27278 [2021-12-06 20:30:03,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:30:03,445 INFO L933 BasicCegarLoop]: 998 mSDtfsCounter, 4701 mSDsluCounter, 744 mSDsCounter, 0 mSdLazyCounter, 1846 mSolverCounterSat, 1418 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4776 SdHoareTripleChecker+Valid, 1742 SdHoareTripleChecker+Invalid, 3264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1418 IncrementalHoareTripleChecker+Valid, 1846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2021-12-06 20:30:03,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4776 Valid, 1742 Invalid, 3264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1418 Valid, 1846 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2021-12-06 20:30:03,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27278 states. [2021-12-06 20:30:06,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27278 to 21354. [2021-12-06 20:30:06,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21354 states, 16537 states have (on average 1.541029207232267) internal successors, (25484), 17256 states have internal predecessors, (25484), 3534 states have call successors, (3534), 895 states have call predecessors, (3534), 1282 states have return successors, (6694), 3605 states have call predecessors, (6694), 3529 states have call successors, (6694) [2021-12-06 20:30:07,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21354 states to 21354 states and 35712 transitions. [2021-12-06 20:30:07,085 INFO L78 Accepts]: Start accepts. Automaton has 21354 states and 35712 transitions. Word has length 131 [2021-12-06 20:30:07,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:30:07,085 INFO L470 AbstractCegarLoop]: Abstraction has 21354 states and 35712 transitions. [2021-12-06 20:30:07,085 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.0) internal successors, (98), 3 states have internal predecessors, (98), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:30:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand 21354 states and 35712 transitions. [2021-12-06 20:30:07,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 20:30:07,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:30:07,090 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:07,090 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-06 20:30:07,090 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:30:07,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:30:07,090 INFO L85 PathProgramCache]: Analyzing trace with hash 148477100, now seen corresponding path program 1 times [2021-12-06 20:30:07,091 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:30:07,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416714] [2021-12-06 20:30:07,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:30:07,091 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:30:07,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:30:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:30:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:30:07,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:07,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:07,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:30:07,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:30:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:30:07,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 20:30:07,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 20:30:07,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 20:30:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:30:07,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:30:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:07,387 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:30:07,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:30:07,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416714] [2021-12-06 20:30:07,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416714] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:30:07,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:30:07,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:30:07,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838039459] [2021-12-06 20:30:07,388 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:30:07,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:30:07,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:30:07,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:30:07,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:30:07,388 INFO L87 Difference]: Start difference. First operand 21354 states and 35712 transitions. Second operand has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 20:30:22,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:30:22,696 INFO L93 Difference]: Finished difference Result 71598 states and 133332 transitions. [2021-12-06 20:30:22,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:30:22,697 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2021-12-06 20:30:22,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:30:23,073 INFO L225 Difference]: With dead ends: 71598 [2021-12-06 20:30:23,074 INFO L226 Difference]: Without dead ends: 50322 [2021-12-06 20:30:23,159 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:30:23,160 INFO L933 BasicCegarLoop]: 941 mSDtfsCounter, 3245 mSDsluCounter, 886 mSDsCounter, 0 mSdLazyCounter, 2122 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3321 SdHoareTripleChecker+Valid, 1827 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 2122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2021-12-06 20:30:23,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3321 Valid, 1827 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1046 Valid, 2122 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2021-12-06 20:30:23,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50322 states. [2021-12-06 20:30:29,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50322 to 39296. [2021-12-06 20:30:29,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39296 states, 30345 states have (on average 1.539166254737189) internal successors, (46706), 31704 states have internal predecessors, (46706), 6598 states have call successors, (6598), 1623 states have call predecessors, (6598), 2352 states have return successors, (14169), 6771 states have call predecessors, (14169), 6593 states have call successors, (14169) [2021-12-06 20:30:30,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39296 states to 39296 states and 67473 transitions. [2021-12-06 20:30:30,248 INFO L78 Accepts]: Start accepts. Automaton has 39296 states and 67473 transitions. Word has length 134 [2021-12-06 20:30:30,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:30:30,249 INFO L470 AbstractCegarLoop]: Abstraction has 39296 states and 67473 transitions. [2021-12-06 20:30:30,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.142857142857142) internal successors, (99), 3 states have internal predecessors, (99), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 20:30:30,249 INFO L276 IsEmpty]: Start isEmpty. Operand 39296 states and 67473 transitions. [2021-12-06 20:30:30,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 20:30:30,256 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:30:30,256 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:30:30,256 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2021-12-06 20:30:30,256 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:30:30,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:30:30,257 INFO L85 PathProgramCache]: Analyzing trace with hash 307701267, now seen corresponding path program 1 times [2021-12-06 20:30:30,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:30:30,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130195712] [2021-12-06 20:30:30,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:30:30,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:30:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:30:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:30,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:30:30,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:30:30,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:30,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:30,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:30:30,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:30:30,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:30:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:30:30,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-06 20:30:30,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 20:30:30,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-06 20:30:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:30:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-06 20:30:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:30:30,555 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:30:30,555 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:30:30,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130195712] [2021-12-06 20:30:30,555 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130195712] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:30:30,555 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:30:30,556 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:30:30,556 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800617516] [2021-12-06 20:30:30,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:30:30,556 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:30:30,556 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:30:30,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:30:30,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:30:30,556 INFO L87 Difference]: Start difference. First operand 39296 states and 67473 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 20:30:55,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:30:55,179 INFO L93 Difference]: Finished difference Result 135628 states and 273784 transitions. [2021-12-06 20:30:55,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:30:55,180 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 135 [2021-12-06 20:30:55,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:30:55,965 INFO L225 Difference]: With dead ends: 135628 [2021-12-06 20:30:55,965 INFO L226 Difference]: Without dead ends: 96410 [2021-12-06 20:30:56,178 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:30:56,179 INFO L933 BasicCegarLoop]: 931 mSDtfsCounter, 3241 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 2148 mSolverCounterSat, 1067 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3317 SdHoareTripleChecker+Valid, 1728 SdHoareTripleChecker+Invalid, 3215 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1067 IncrementalHoareTripleChecker+Valid, 2148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2021-12-06 20:30:56,179 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3317 Valid, 1728 Invalid, 3215 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1067 Valid, 2148 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2021-12-06 20:30:56,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96410 states. [2021-12-06 20:31:09,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96410 to 75184. [2021-12-06 20:31:09,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 75184 states, 57965 states have (on average 1.536823945484344) internal successors, (89082), 60604 states have internal predecessors, (89082), 12726 states have call successors, (12726), 3079 states have call predecessors, (12726), 4492 states have return successors, (32529), 13103 states have call predecessors, (32529), 12721 states have call successors, (32529) [2021-12-06 20:31:10,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75184 states to 75184 states and 134337 transitions. [2021-12-06 20:31:10,356 INFO L78 Accepts]: Start accepts. Automaton has 75184 states and 134337 transitions. Word has length 135 [2021-12-06 20:31:10,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:31:10,356 INFO L470 AbstractCegarLoop]: Abstraction has 75184 states and 134337 transitions. [2021-12-06 20:31:10,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 3 states have internal predecessors, (100), 2 states have call successors, (16), 6 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2021-12-06 20:31:10,357 INFO L276 IsEmpty]: Start isEmpty. Operand 75184 states and 134337 transitions. [2021-12-06 20:31:10,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-06 20:31:10,364 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:31:10,364 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:31:10,364 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2021-12-06 20:31:10,364 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:31:10,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:31:10,364 INFO L85 PathProgramCache]: Analyzing trace with hash 1002937965, now seen corresponding path program 1 times [2021-12-06 20:31:10,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:31:10,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849971048] [2021-12-06 20:31:10,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:31:10,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:31:10,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:31:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:31:10,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:31:10,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:31:10,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:31:10,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:31:10,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:31:10,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:31:10,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:31:10,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:31:10,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:31:10,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:31:10,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:31:10,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 20:31:10,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:31:10,659 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:31:10,659 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:31:10,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849971048] [2021-12-06 20:31:10,659 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849971048] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:31:10,659 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:31:10,659 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:31:10,659 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537816378] [2021-12-06 20:31:10,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:31:10,660 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:31:10,660 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:31:10,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:31:10,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:31:10,660 INFO L87 Difference]: Start difference. First operand 75184 states and 134337 transitions. Second operand has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:31:56,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:31:56,778 INFO L93 Difference]: Finished difference Result 263692 states and 606575 transitions. [2021-12-06 20:31:56,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:31:56,779 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 134 [2021-12-06 20:31:56,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:31:58,951 INFO L225 Difference]: With dead ends: 263692 [2021-12-06 20:31:58,951 INFO L226 Difference]: Without dead ends: 188586 [2021-12-06 20:31:59,516 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:31:59,516 INFO L933 BasicCegarLoop]: 920 mSDtfsCounter, 2460 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 2522 mSolverCounterSat, 848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2536 SdHoareTripleChecker+Valid, 1842 SdHoareTripleChecker+Invalid, 3370 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 848 IncrementalHoareTripleChecker+Valid, 2522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:31:59,516 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2536 Valid, 1842 Invalid, 3370 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [848 Valid, 2522 Invalid, 0 Unknown, 0 Unchecked, 6.3s Time] [2021-12-06 20:31:59,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188586 states. [2021-12-06 20:32:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188586 to 146964. [2021-12-06 20:32:28,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146964 states, 113209 states have (on average 1.5341713114681694) internal successors, (173682), 118408 states have internal predecessors, (173682), 24982 states have call successors, (24982), 5991 states have call predecessors, (24982), 8772 states have return successors, (81265), 25767 states have call predecessors, (81265), 24977 states have call successors, (81265) [2021-12-06 20:32:30,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146964 states to 146964 states and 279929 transitions. [2021-12-06 20:32:30,378 INFO L78 Accepts]: Start accepts. Automaton has 146964 states and 279929 transitions. Word has length 134 [2021-12-06 20:32:30,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:32:30,379 INFO L470 AbstractCegarLoop]: Abstraction has 146964 states and 279929 transitions. [2021-12-06 20:32:30,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.428571428571429) internal successors, (101), 3 states have internal predecessors, (101), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:32:30,379 INFO L276 IsEmpty]: Start isEmpty. Operand 146964 states and 279929 transitions. [2021-12-06 20:32:30,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2021-12-06 20:32:30,387 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:32:30,387 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:32:30,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-06 20:32:30,388 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:32:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:32:30,388 INFO L85 PathProgramCache]: Analyzing trace with hash 1026192118, now seen corresponding path program 1 times [2021-12-06 20:32:30,388 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:32:30,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [893260279] [2021-12-06 20:32:30,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:32:30,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:32:30,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:32:30,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:32:30,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:32:30,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:32:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:32:30,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:32:30,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:32:30,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:32:30,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-06 20:32:30,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:32:30,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:32:30,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:32:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-06 20:32:30,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2021-12-06 20:32:30,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:32:30,694 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2021-12-06 20:32:30,695 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:32:30,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [893260279] [2021-12-06 20:32:30,695 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [893260279] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:32:30,695 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:32:30,695 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-12-06 20:32:30,695 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970685510] [2021-12-06 20:32:30,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:32:30,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-06 20:32:30,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:32:30,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-06 20:32:30,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2021-12-06 20:32:30,696 INFO L87 Difference]: Start difference. First operand 146964 states and 279929 transitions. Second operand has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:34:00,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:34:00,455 INFO L93 Difference]: Finished difference Result 519743 states and 1466961 transitions. [2021-12-06 20:34:00,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-06 20:34:00,455 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 135 [2021-12-06 20:34:00,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:34:06,984 INFO L225 Difference]: With dead ends: 519743 [2021-12-06 20:34:06,984 INFO L226 Difference]: Without dead ends: 372843 [2021-12-06 20:34:09,270 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=96, Unknown=0, NotChecked=0, Total=156 [2021-12-06 20:34:09,270 INFO L933 BasicCegarLoop]: 954 mSDtfsCounter, 3774 mSDsluCounter, 791 mSDsCounter, 0 mSdLazyCounter, 1907 mSolverCounterSat, 1288 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3850 SdHoareTripleChecker+Valid, 1745 SdHoareTripleChecker+Invalid, 3195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1288 IncrementalHoareTripleChecker+Valid, 1907 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2021-12-06 20:34:09,271 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3850 Valid, 1745 Invalid, 3195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1288 Valid, 1907 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2021-12-06 20:34:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372843 states. [2021-12-06 20:35:16,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372843 to 291150. [2021-12-06 20:35:16,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291150 states, 224114 states have (on average 1.530020436028093) internal successors, (342899), 234643 states have internal predecessors, (342899), 49494 states have call successors, (49494), 11815 states have call predecessors, (49494), 17541 states have return successors, (224188), 51094 states have call predecessors, (224188), 49489 states have call successors, (224188) [2021-12-06 20:35:20,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291150 states to 291150 states and 616581 transitions. [2021-12-06 20:35:20,564 INFO L78 Accepts]: Start accepts. Automaton has 291150 states and 616581 transitions. Word has length 135 [2021-12-06 20:35:20,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:35:20,565 INFO L470 AbstractCegarLoop]: Abstraction has 291150 states and 616581 transitions. [2021-12-06 20:35:20,565 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.571428571428571) internal successors, (102), 3 states have internal predecessors, (102), 2 states have call successors, (15), 6 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-06 20:35:20,565 INFO L276 IsEmpty]: Start isEmpty. Operand 291150 states and 616581 transitions. [2021-12-06 20:35:20,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2021-12-06 20:35:20,605 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:35:20,605 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:35:20,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2021-12-06 20:35:20,605 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:35:20,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:35:20,606 INFO L85 PathProgramCache]: Analyzing trace with hash 606331563, now seen corresponding path program 1 times [2021-12-06 20:35:20,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:35:20,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [128754321] [2021-12-06 20:35:20,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:35:20,606 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:35:20,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:35:20,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:35:20,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:35:20,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:35:20,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:35:20,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:35:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:35:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:35:20,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:35:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:35:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-06 20:35:20,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:35:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2021-12-06 20:35:20,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:20,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-06 20:35:20,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-06 20:35:21,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:35:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-06 20:35:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-06 20:35:21,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-06 20:35:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-06 20:35:21,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2021-12-06 20:35:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-06 20:35:21,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-06 20:35:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,019 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2021-12-06 20:35:21,019 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:35:21,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [128754321] [2021-12-06 20:35:21,019 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [128754321] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-06 20:35:21,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2102703552] [2021-12-06 20:35:21,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:35:21,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-06 20:35:21,020 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 [2021-12-06 20:35:21,020 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-06 20:35:21,021 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-06 20:35:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:35:21,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 2138 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-06 20:35:21,310 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-06 20:35:21,447 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2021-12-06 20:35:21,447 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-06 20:35:21,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2102703552] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:35:21,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-06 20:35:21,447 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [15] total 17 [2021-12-06 20:35:21,448 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246112625] [2021-12-06 20:35:21,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:35:21,448 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-06 20:35:21,448 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:35:21,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-06 20:35:21,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-06 20:35:21,449 INFO L87 Difference]: Start difference. First operand 291150 states and 616581 transitions. Second operand has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 20:36:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-06 20:36:20,732 INFO L93 Difference]: Finished difference Result 594893 states and 1372564 transitions. [2021-12-06 20:36:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-06 20:36:20,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) Word has length 195 [2021-12-06 20:36:20,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-06 20:36:23,860 INFO L225 Difference]: With dead ends: 594893 [2021-12-06 20:36:23,861 INFO L226 Difference]: Without dead ends: 303825 [2021-12-06 20:36:27,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 237 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2021-12-06 20:36:27,961 INFO L933 BasicCegarLoop]: 777 mSDtfsCounter, 213 mSDsluCounter, 1530 mSDsCounter, 0 mSdLazyCounter, 146 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 2307 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 146 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-06 20:36:27,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [213 Valid, 2307 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 146 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-06 20:36:28,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 303825 states. [2021-12-06 20:37:22,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 303825 to 303825. [2021-12-06 20:37:22,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303825 states, 236464 states have (on average 1.550443196427363) internal successors, (366624), 246993 states have internal predecessors, (366624), 49494 states have call successors, (49494), 12140 states have call predecessors, (49494), 17866 states have return successors, (224188), 51094 states have call predecessors, (224188), 49489 states have call successors, (224188) [2021-12-06 20:37:26,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303825 states to 303825 states and 640306 transitions. [2021-12-06 20:37:26,970 INFO L78 Accepts]: Start accepts. Automaton has 303825 states and 640306 transitions. Word has length 195 [2021-12-06 20:37:26,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-06 20:37:26,971 INFO L470 AbstractCegarLoop]: Abstraction has 303825 states and 640306 transitions. [2021-12-06 20:37:26,971 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.25) internal successors, (133), 4 states have internal predecessors, (133), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 2 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-06 20:37:26,971 INFO L276 IsEmpty]: Start isEmpty. Operand 303825 states and 640306 transitions. [2021-12-06 20:37:27,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-06 20:37:27,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-06 20:37:27,010 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:37:27,043 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-06 20:37:27,210 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cdaca09-1f01-40bc-8962-35aff042e0d3/bin/uautomizer-DrprNOufMa/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable30 [2021-12-06 20:37:27,210 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-06 20:37:27,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-06 20:37:27,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1698066567, now seen corresponding path program 1 times [2021-12-06 20:37:27,211 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-06 20:37:27,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848502173] [2021-12-06 20:37:27,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-06 20:37:27,211 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-06 20:37:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:37:27,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:37:27,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-06 20:37:27,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-06 20:37:27,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:37:27,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:37:27,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2021-12-06 20:37:27,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-06 20:37:27,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-06 20:37:27,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-06 20:37:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2021-12-06 20:37:27,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:37:27,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-06 20:37:27,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-06 20:37:27,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-06 20:37:27,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-06 20:37:27,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2021-12-06 20:37:27,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-06 20:37:27,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-06 20:37:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-06 20:37:27,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-06 20:37:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-06 20:37:27,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2021-12-06 20:37:27,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-06 20:37:27,816 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-06 20:37:27,817 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-06 20:37:27,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848502173] [2021-12-06 20:37:27,817 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848502173] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-06 20:37:27,817 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-06 20:37:27,817 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2021-12-06 20:37:27,817 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604916343] [2021-12-06 20:37:27,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-06 20:37:27,817 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-06 20:37:27,818 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-06 20:37:27,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-06 20:37:27,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=163, Unknown=0, NotChecked=0, Total=210 [2021-12-06 20:37:27,818 INFO L87 Difference]: Start difference. First operand 303825 states and 640306 transitions. Second operand has 15 states, 15 states have (on average 8.333333333333334) internal successors, (125), 9 states have internal predecessors, (125), 5 states have call successors, (24), 8 states have call predecessors, (24), 5 states have return successors, (23), 6 states have call predecessors, (23), 5 states have call successors, (23)